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| author | larryhastings <larry@hastings.org> | 2017-09-04 19:03:25 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-09-04 19:03:25 (GMT) |
| commit | 6a116c2aa4e5f13e24f2ee792b5d7af5e8db1c88 (patch) | |
| tree | ce0129e8dca91e89320f5bad599973a76765faf8 /Misc/NEWS | |
| parent | 39fde5f93b58af5bc7cb34d1619d9aa0b9e2ec1c (diff) | |
| download | cpython-6a116c2aa4e5f13e24f2ee792b5d7af5e8db1c88.zip cpython-6a116c2aa4e5f13e24f2ee792b5d7af5e8db1c88.tar.gz cpython-6a116c2aa4e5f13e24f2ee792b5d7af5e8db1c88.tar.bz2 | |
Blurbify 3.6. (#3287)
Blurbify 3.6.
Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 8934 |
1 files changed, 0 insertions, 8934 deletions
diff --git a/Misc/NEWS b/Misc/NEWS deleted file mode 100644 index 309b466..0000000 --- a/Misc/NEWS +++ /dev/null @@ -1,8934 +0,0 @@ -+++++++++++ -Python News -+++++++++++ - -What's New in Python 3.6.3 release candidate 1? -=============================================== - -*Release date: XXXX-XX-XX* - -Core and Builtins ------------------ - -- bpo-31161: Make sure the 'Missing parentheses' syntax error message is - only applied to SyntaxError, not to subclasses. Patch by Martijn Pieters. - -- bpo-30814: Fixed a race condition when import a submodule from a package. - -- bpo-30597: ``print`` now shows expected input in custom error message when - used as a Python 2 statement. Patch by Sanyam Khurana. - -Library -------- - -- bpo-30879: os.listdir() and os.scandir() now emit bytes names when called - with bytes-like argument. - -- bpo-30746: Prohibited the '=' character in environment variable names in - ``os.putenv()`` and ``os.spawn*()``. - -- bpo-29755: Fixed the lgettext() family of functions in the gettext module. - They now always return bytes. - - -What's New in Python 3.6.2? -=========================== - -*Release date: 2017-07-17* - -- No changes since release candidate 2 - - -What's New in Python 3.6.2 release candidate 2? -=============================================== - -*Release date: 2017-07-07* - -Core and Builtins ------------------ - -Library -------- - -- [Security] bpo-30730: Prevent environment variables injection in subprocess on - Windows. Prevent passing other environment variables and command arguments. - -- [Security] bpo-30694: Upgrade expat copy from 2.2.0 to 2.2.1 to get fixes - of multiple security vulnerabilities including: CVE-2017-9233 (External - entity infinite loop DoS), CVE-2016-9063 (Integer overflow, re-fix), - CVE-2016-0718 (Fix regression bugs from 2.2.0's fix to CVE-2016-0718) - and CVE-2012-0876 (Counter hash flooding with SipHash). - Note: the CVE-2016-5300 (Use os-specific entropy sources like getrandom) - doesn't impact Python, since Python already gets entropy from the OS to set - the expat secret using ``XML_SetHashSalt()``. - -- [Security] bpo-30500: Fix urllib.parse.splithost() to correctly parse - fragments. For example, ``splithost('//127.0.0.1#@evil.com/')`` now - correctly returns the ``127.0.0.1`` host, instead of treating ``@evil.com`` - as the host in an authentification (``login@host``). - - -What's New in Python 3.6.2 release candidate 1? -=============================================== - -*Release date: 2017-06-17* - -Core and Builtins ------------------ - -- bpo-30682: Removed a too-strict assertion that failed for certain f-strings, - such as eval("f'\\\n'") and eval("f'\\\r'"). - -- bpo-30604: Move co_extra_freefuncs to not be per-thread to avoid crashes - -- bpo-29104: Fixed parsing backslashes in f-strings. - -- bpo-27945: Fixed various segfaults with dict when input collections are - mutated during searching, inserting or comparing. Based on patches by - Duane Griffin and Tim Mitchell. - -- bpo-25794: Fixed type.__setattr__() and type.__delattr__() for - non-interned attribute names. Based on patch by Eryk Sun. - -- bpo-30039: If a KeyboardInterrupt happens when the interpreter is in - the middle of resuming a chain of nested 'yield from' or 'await' - calls, it's now correctly delivered to the innermost frame. - -- bpo-12414: sys.getsizeof() on a code object now returns the sizes - which includes the code struct and sizes of objects which it references. - Patch by Dong-hee Na. - -- bpo-29949: Fix memory usage regression of set and frozenset object. - -- bpo-29935: Fixed error messages in the index() method of tuple, list and deque - when pass indices of wrong type. - -- bpo-29859: Show correct error messages when any of the pthread_* calls in - thread_pthread.h fails. - -- bpo-28876: ``bool(range)`` works even if ``len(range)`` - raises :exc:`OverflowError`. - -- bpo-29600: Fix wrapping coroutine return values in StopIteration. - -- bpo-28856: Fix an oversight that %b format for bytes should support objects - follow the buffer protocol. - -- bpo-29714: Fix a regression that bytes format may fail when containing zero - bytes inside. - -- bpo-29478: If max_line_length=None is specified while using the Compat32 policy, - it is no longer ignored. Patch by Mircea Cosbuc. - -Library -------- - -- bpo-30616: Functional API of enum allows to create empty enums. - Patched by Dong-hee Na - -- bpo-30038: Fix race condition between signal delivery and wakeup file - descriptor. Patch by Nathaniel Smith. - -- bpo-23894: lib2to3 now recognizes ``rb'...'`` and ``f'...'`` strings. - -- bpo-23890: unittest.TestCase.assertRaises() now manually breaks a reference - cycle to not keep objects alive longer than expected. - -- bpo-30149: inspect.signature() now supports callables with - variable-argument parameters wrapped with partialmethod. - Patch by Dong-hee Na. - -- bpo-30645: Fix path calculation in imp.load_package(), fixing it for - cases when a package is only shipped with bytecodes. Patch by - Alexandru Ardelean. - -- bpo-29931: Fixed comparison check for ipaddress.ip_interface objects. - Patch by Sanjay Sundaresan. - -- bpo-30605: re.compile() no longer raises a BytesWarning when compiling a - bytes instance with misplaced inline modifier. Patch by Roy Williams. - -- [Security] bpo-29591: Update expat copy from 2.1.1 to 2.2.0 to get fixes - of CVE-2016-0718 and CVE-2016-4472. See - https://sourceforge.net/p/expat/bugs/537/ for more information. - -- bpo-24484: Avoid race condition in multiprocessing cleanup (#2159) - -- bpo-28994: The traceback no longer displayed for SystemExit raised in - a callback registered by atexit. - -- bpo-30508: Don't log exceptions if Task/Future "cancel()" method was - called. - -- bpo-28556: Updates to typing module: Add generic AsyncContextManager, add - support for ContextManager on all versions. Original PRs by Jelle Zijlstra - and Ivan Levkivskyi - -- bpo-29870: Fix ssl sockets leaks when connection is aborted in asyncio/ssl - implementation. Patch by Michaël Sghaïer. - -- bpo-29743: Closing transport during handshake process leaks open socket. - Patch by Nikolay Kim - -- bpo-27585: Fix waiter cancellation in asyncio.Lock. - Patch by Mathieu Sornay. - -- bpo-30418: On Windows, subprocess.Popen.communicate() now also ignore EINVAL - on stdin.write() if the child process is still running but closed the pipe. - -- bpo-29822: inspect.isabstract() now works during __init_subclass__. Patch - by Nate Soares. - -- bpo-29581: ABCMeta.__new__ now accepts ``**kwargs``, allowing abstract base - classes to use keyword parameters in __init_subclass__. Patch by Nate Soares. - -- bpo-30557: faulthandler now correctly filters and displays exception codes - on Windows - -- bpo-30378: Fix the problem that logging.handlers.SysLogHandler cannot - handle IPv6 addresses. - -- bpo-29960: Preserve generator state when _random.Random.setstate() - raises an exception. Patch by Bryan Olson. - -- bpo-30414: multiprocessing.Queue._feed background running - thread do not break from main loop on exception. - -- bpo-30003: Fix handling escape characters in HZ codec. Based on patch - by Ma Lin. - -- bpo-30301: Fix AttributeError when using SimpleQueue.empty() under - *spawn* and *forkserver* start methods. - -- bpo-30329: imaplib and poplib now catch the Windows socket WSAEINVAL error - (code 10022) on shutdown(SHUT_RDWR): An invalid operation was attempted. - This error occurs sometimes on SSL connections. - -- bpo-30375: Warnings emitted when compile a regular expression now always - point to the line in the user code. Previously they could point into inners - of the re module if emitted from inside of groups or conditionals. - -- bpo-30048: Fixed ``Task.cancel()`` can be ignored when the task is - running coroutine and the coroutine returned without any more ``await``. - -- bpo-30266: contextlib.AbstractContextManager now supports anti-registration - by setting __enter__ = None or __exit__ = None, following the pattern - introduced in bpo-25958. Patch by Jelle Zijlstra. - -- bpo-30298: Weaken the condition of deprecation warnings for inline modifiers. - Now allowed several subsequential inline modifiers at the start of the - pattern (e.g. ``'(?i)(?s)...'``). In verbose mode whitespaces and comments - now are allowed before and between inline modifiers (e.g. - ``'(?x) (?i) (?s)...'``). - -- bpo-29990: Fix range checking in GB18030 decoder. Original patch by Ma Lin. - -- Revert bpo-26293 for zipfile breakage. See also bpo-29094. - -- bpo-30243: Removed the __init__ methods of _json's scanner and encoder. - Misusing them could cause memory leaks or crashes. Now scanner and encoder - objects are completely initialized in the __new__ methods. - -- bpo-30185: Avoid KeyboardInterrupt tracebacks in forkserver helper process - when Ctrl-C is received. - -- bpo-28556: Various updates to typing module: add typing.NoReturn type, use - WrapperDescriptorType, minor bug-fixes. Original PRs by - Jim Fasarakis-Hilliard and Ivan Levkivskyi. - -- bpo-30205: Fix getsockname() for unbound AF_UNIX sockets on Linux. - -- bpo-30070: Fixed leaks and crashes in errors handling in the parser module. - -- bpo-30061: Fixed crashes in IOBase methods __next__() and readlines() when - readline() or __next__() respectively return non-sizeable object. - Fixed possible other errors caused by not checking results of PyObject_Size(), - PySequence_Size(), or PyMapping_Size(). - -- bpo-30017: Allowed calling the close() method of the zip entry writer object - multiple times. Writing to a closed writer now always produces a ValueError. - -- bpo-30068: _io._IOBase.readlines will check if it's closed first when - hint is present. - -- bpo-29694: Fixed race condition in pathlib mkdir with flags - parents=True. Patch by Armin Rigo. - -- bpo-29692: Fixed arbitrary unchaining of RuntimeError exceptions in - contextlib.contextmanager. Patch by Siddharth Velankar. - -- bpo-29998: Pickling and copying ImportError now preserves name and path - attributes. - -- bpo-29953: Fixed memory leaks in the replace() method of datetime and time - objects when pass out of bound fold argument. - -- bpo-29942: Fix a crash in itertools.chain.from_iterable when encountering - long runs of empty iterables. - -- bpo-27863: Fixed multiple crashes in ElementTree caused by race conditions - and wrong types. - -- bpo-28699: Fixed a bug in pools in multiprocessing.pool that raising an - exception at the very first of an iterable may swallow the exception or - make the program hang. Patch by Davin Potts and Xiang Zhang. - -- bpo-25803: Avoid incorrect errors raised by Path.mkdir(exist_ok=True) - when the OS gives priority to errors such as EACCES over EEXIST. - -- bpo-29861: Release references to tasks, their arguments and their results - as soon as they are finished in multiprocessing.Pool. - -- bpo-29884: faulthandler: Restore the old sigaltstack during teardown. - Patch by Christophe Zeitouny. - -- bpo-25455: Fixed crashes in repr of recursive buffered file-like objects. - -- bpo-29800: Fix crashes in partial.__repr__ if the keys of partial.keywords - are not strings. Patch by Michael Seifert. - -- bpo-29742: get_extra_info() raises exception if get called on closed ssl transport. - Patch by Nikolay Kim. - -- bpo-8256: Fixed possible failing or crashing input() if attributes "encoding" - or "errors" of sys.stdin or sys.stdout are not set or are not strings. - -- bpo-28298: Fix a bug that prevented array 'Q', 'L' and 'I' from accepting big - intables (objects that have __int__) as elements. Patch by Oren Milman. - -- bpo-28231: The zipfile module now accepts path-like objects for external - paths. - -- bpo-26915: index() and count() methods of collections.abc.Sequence now - check identity before checking equality when do comparisons. - -- bpo-29615: SimpleXMLRPCDispatcher no longer chains KeyError (or any other - exception) to exception(s) raised in the dispatched methods. - Patch by Petr Motejlek. - -- bpo-30177: path.resolve(strict=False) no longer cuts the path after the first - element not present in the filesystem. Patch by Antoine Pietri. - -IDLE ----- - -- bpo-15786: Fix several problems with IDLE's autocompletion box. - The following should now work: clicking on selection box items; - using the scrollbar; selecting an item by hitting Return. - Hangs on MacOSX should no longer happen. Patch by Louie Lu. - -- bpo-25514: Add doc subsubsection about IDLE failure to start. - Popup no-connection message directs users to this section. - -- bpo-30642: Fix reference leaks in IDLE tests. - Patches by Louie Lu and Terry Jan Reedy. - -- bpo-30495: Add docstrings for textview.py and use PEP8 names. - Patches by Cheryl Sabella and Terry Jan Reedy. - -- bpo-30290: Help-about: use pep8 names and add tests. - Increase coverage to 100%. - Patches by Louie Lu, Cheryl Sabella, and Terry Jan Reedy. - -- bpo-30303: Add _utest option to textview; add new tests. - Increase coverage to 100%. - Patches by Louie Lu and Terry Jan Reedy. - -C API ------ - -- Issue #27867: Function PySlice_GetIndicesEx() no longer replaced with a macro - if Py_LIMITED_API is not set. - - -Build ------ - -- bpo-29941: Add ``--with-assertions`` configure flag to explicitly enable - C ``assert()`` checks. Defaults to off. ``--with-pydebug`` implies - ``--with-assertions``. - -- bpo-28787: Fix out-of-tree builds of Python when configured with - ``--with--dtrace``. - -- bpo-29243: Prevent unnecessary rebuilding of Python during ``make test``, - ``make install`` and some other make targets when configured with - ``--enable-optimizations``. - -- bpo-23404: Don't regenerate generated files based on file modification time - anymore: the action is now explicit. Replace ``make touch`` with - ``make regen-all``. - -- bpo-29643: Fix ``--enable-optimization`` didn't work. - -Documentation -------------- - -- bpo-30176: Add missing attribute related constants in curses documentation. - -- Issue #30052: the link targets for :func:`bytes` and - :func:`bytearray` are now their respective type definitions, rather - than the corresponding builtin function entries. Use :ref:`bytes <func-bytes>` - and :ref:`bytearray <func-bytearray>` to reference the latter. - - In order to ensure this and future cross-reference updates are applied - automatically, the daily documentation builds now disable the default - output caching features in Sphinx. - -- bpo-26985: Add missing info of code object in inspect documentation. - -Tools/Demos ------------ - -- Issue #29367: python-gdb.py now supports also ``method-wrapper`` - (``wrapperobject``) objects. - -Tests ------ - -- bpo-30357: test_thread: setUp() now uses support.threading_setup() and - support.threading_cleanup() to wait until threads complete to avoid - random side effects on following tests. Initial patch written by Grzegorz - Grzywacz. - -- bpo-30197: Enhanced functions swap_attr() and swap_item() in the - test.support module. They now work when delete replaced attribute or item - inside the with statement. The old value of the attribute or item (or None - if it doesn't exist) now will be assigned to the target of the "as" clause, - if there is one. - -Windows -------- - -- bpo-30687: Locate msbuild.exe on Windows when building rather than - vcvarsall.bat - -- bpo-30450: The build process on Windows no longer depends on Subversion, - instead pulling external code from GitHub via a Python script. If Python 3.6 - is not found on the system (via ``py -3.6``), NuGet is used to download a - copy of 32-bit Python. - - -What's New in Python 3.6.1? -=========================== - -*Release date: 2017-03-21* - -Core and Builtins ------------------ - -- bpo-29723: The ``sys.path[0]`` initialization change for bpo-29139 caused a - regression by revealing an inconsistency in how sys.path is initialized when - executing ``__main__`` from a zipfile, directory, or other import location. - The interpreter now consistently avoids ever adding the import location's - parent directory to ``sys.path``, and ensures no other ``sys.path`` entries - are inadvertently modified when inserting the import location named on the - command line. - -Build ------ - -- bpo-27593: fix format of git information used in sys.version - -- Fix incompatible comment in python.h - - -What's New in Python 3.6.1 release candidate 1 -============================================== - -*Release date: 2017-03-04* - -Core and Builtins ------------------ - -- bpo-28893: Set correct __cause__ for errors about invalid awaitables - returned from __aiter__ and __anext__. - -- bpo-29683: Fixes to memory allocation in _PyCode_SetExtra. Patch by - Brian Coleman. - -- bpo-29684: Fix minor regression of PyEval_CallObjectWithKeywords. - It should raise TypeError when kwargs is not a dict. But it might - cause segv when args=NULL and kwargs is not a dict. - -- Issue #28598: Support __rmod__ for subclasses of str being called before - str.__mod__. Patch by Martijn Pieters. - -- bpo-29607: Fix stack_effect computation for CALL_FUNCTION_EX. - Patch by Matthieu Dartiailh. - -- bpo-29602: Fix incorrect handling of signed zeros in complex constructor for - complex subclasses and for inputs having a __complex__ method. Patch - by Serhiy Storchaka. - -- bpo-29347: Fixed possibly dereferencing undefined pointers - when creating weakref objects. - -- bpo-29438: Fixed use-after-free problem in key sharing dict. - -- Issue #29319: Prevent RunMainFromImporter overwriting sys.path[0]. - -- Issue #29337: Fixed possible BytesWarning when compare the code objects. - Warnings could be emitted at compile time. - -- Issue #29327: Fixed a crash when pass the iterable keyword argument to - sorted(). - -- Issue #29034: Fix memory leak and use-after-free in os module (path_converter). - -- Issue #29159: Fix regression in bytes(x) when x.__index__() raises Exception. - -- Issue #28932: Do not include <sys/random.h> if it does not exist. - -- Issue #25677: Correct the positioning of the syntax error caret for - indented blocks. Based on patch by Michael Layzell. - -- Issue #29000: Fixed bytes formatting of octals with zero padding in alternate - form. - -- Issue #26919: On Android, operating system data is now always encoded/decoded - to/from UTF-8, instead of the locale encoding to avoid inconsistencies with - os.fsencode() and os.fsdecode() which are already using UTF-8. - -- Issue #28991: functools.lru_cache() was susceptible to an obscure reentrancy - bug triggerable by a monkey-patched len() function. - -- Issue #28739: f-string expressions are no longer accepted as docstrings and - by ast.literal_eval() even if they do not include expressions. - -- Issue #28512: Fixed setting the offset attribute of SyntaxError by - PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject(). - -- Issue #28918: Fix the cross compilation of xxlimited when Python has been - built with Py_DEBUG defined. - -- Issue #28731: Optimize _PyDict_NewPresized() to create correct size dict. - Improve speed of dict literal with constant keys up to 30%. - -Extension Modules ------------------ - -- Issue #29169: Update zlib to 1.2.11. - -Library -------- - -- bpo-29623: Allow use of path-like object as a single argument in - ConfigParser.read(). Patch by David Ellis. - -- bpo-28963: Fix out of bound iteration in asyncio.Future.remove_done_callback - implemented in C. - -- bpo-29704: asyncio.subprocess.SubprocessStreamProtocol no longer closes - before all pipes are closed. - -- bpo-29271: Fix Task.current_task and Task.all_tasks implemented in C - to accept None argument as their pure Python implementation. - -- bpo-29703: Fix asyncio to support instantiation of new event loops - in child processes. - -- bpo-29376: Fix assertion error in threading._DummyThread.is_alive(). - -- bpo-28624: Add a test that checks that cwd parameter of Popen() accepts - PathLike objects. Patch by Sayan Chowdhury. - -- bpo-28518: Start a transaction implicitly before a DML statement. - Patch by Aviv Palivoda. - -- bpo-29532: Altering a kwarg dictionary passed to functools.partial() - no longer affects a partial object after creation. - -- bpo-29110: Fix file object leak in aifc.open() when file is given as a - filesystem path and is not in valid AIFF format. Patch by Anthony Zhang. - -- Issue #28556: Various updates to typing module: typing.Counter, typing.ChainMap, - improved ABC caching, etc. Original PRs by Jelle Zijlstra, Ivan Levkivskyi, - Manuel Krebber, and Łukasz Langa. - -- Issue #29100: Fix datetime.fromtimestamp() regression introduced in Python - 3.6.0: check minimum and maximum years. - -- Issue #29519: Fix weakref spewing exceptions during interpreter shutdown - when used with a rare combination of multiprocessing and custom codecs. - -- Issue #29416: Prevent infinite loop in pathlib.Path.mkdir - -- Issue #29444: Fixed out-of-bounds buffer access in the group() method of - the match object. Based on patch by WGH. - -- Issue #29335: Fix subprocess.Popen.wait() when the child process has - exited to a stopped instead of terminated state (ex: when under ptrace). - -- Issue #29290: Fix a regression in argparse that help messages would wrap at - non-breaking spaces. - -- Issue #28735: Fixed the comparison of mock.MagickMock with mock.ANY. - -- Issue #29316: Restore the provisional status of typing module, add - corresponding note to documentation. Patch by Ivan L. - -- Issue #29219: Fixed infinite recursion in the repr of uninitialized - ctypes.CDLL instances. - -- Issue #29011: Fix an important omission by adding Deque to the typing module. - -- Issue #28969: Fixed race condition in C implementation of functools.lru_cache. - KeyError could be raised when cached function with full cache was - simultaneously called from differen threads with the same uncached arguments. - -- Issue #29142: In urllib.request, suffixes in no_proxy environment variable with - leading dots could match related hostnames again (e.g. .b.c matches a.b.c). - Patch by Milan Oberkirch. - -- Issue #28961: Fix unittest.mock._Call helper: don't ignore the name parameter - anymore. Patch written by Jiajun Huang. - -- Issue #29203: functools.lru_cache() now respects PEP 468 and preserves - the order of keyword arguments. f(a=1, b=2) is now cached separately - from f(b=2, a=1) since both calls could potentially give different results. - -- Issue #15812: inspect.getframeinfo() now correctly shows the first line of - a context. Patch by Sam Breese. - -- Issue #29094: Offsets in a ZIP file created with extern file object and modes - "w" and "x" now are relative to the start of the file. - -- Issue #29085: Allow random.Random.seed() to use high quality OS randomness - rather than the pid and time. - -- Issue #29061: Fixed bug in secrets.randbelow() which would hang when given - a negative input. Patch by Brendan Donegan. - -- Issue #29079: Prevent infinite loop in pathlib.resolve() on Windows - -- Issue #13051: Fixed recursion errors in large or resized - curses.textpad.Textbox. Based on patch by Tycho Andersen. - -- Issue #29119: Fix weakrefs in the pure python version of - collections.OrderedDict move_to_end() method. - Contributed by Andra Bogildea. - -- Issue #9770: curses.ascii predicates now work correctly with negative - integers. - -- Issue #28427: old keys should not remove new values from - WeakValueDictionary when collecting from another thread. - -- Issue #28923: Remove editor artifacts from Tix.py. - -- Issue #29055: Neaten-up empty population error on random.choice() - by suppressing the upstream exception. - -- Issue #28871: Fixed a crash when deallocate deep ElementTree. - -- Issue #19542: Fix bugs in WeakValueDictionary.setdefault() and - WeakValueDictionary.pop() when a GC collection happens in another - thread. - -- Issue #20191: Fixed a crash in resource.prlimit() when passing a sequence that - doesn't own its elements as limits. - -- Issue #28779: multiprocessing.set_forkserver_preload() would crash the - forkserver process if a preloaded module instantiated some - multiprocessing objects such as locks. - -- Issue #28847: dbm.dumb now supports reading read-only files and no longer - writes the index file when it is not changed. - -- Issue #26937: The chown() method of the tarfile.TarFile class does not fail - now when the grp module cannot be imported, as for example on Android - platforms. - -IDLE ----- - -- Issue #29071: IDLE colors f-string prefixes (but not invalid ur prefixes). - -- Issue #28572: Add 10% to coverage of IDLE's test_configdialog. - Update and augment description of the configuration system. - -Windows -------- - -- bpo-29579: Removes readme.txt from the installer - -- Issue #29326: Ignores blank lines in ._pth files (Patch by Alexey Izbyshev) - -- Issue #28164: Correctly handle special console filenames (patch by Eryk Sun) - -- Issue #29409: Implement PEP 529 for io.FileIO (Patch by Eryk Sun) - -- Issue #29392: Prevent crash when passing invalid arguments into msvcrt module. - -- Issue #25778: winreg does not truncate string correctly (Patch by Eryk Sun) - -- Issue #28896: Deprecate WindowsRegistryFinder and disable it by default. - -C API ------ - -- Issue #27867: Function PySlice_GetIndicesEx() is replaced with a macro if - Py_LIMITED_API is not set or set to the value between 0x03050400 - and 0x03060000 (not including) or 0x03060100 or higher. - -- Issue #29083: Fixed the declaration of some public API functions. - PyArg_VaParse() and PyArg_VaParseTupleAndKeywords() were not available in - limited API. PyArg_ValidateKeywordArguments(), PyArg_UnpackTuple() and - Py_BuildValue() were not available in limited API of version < 3.3 when - PY_SSIZE_T_CLEAN is defined. - -- Issue #29058: All stable API extensions added after Python 3.2 are now - available only when Py_LIMITED_API is set to the PY_VERSION_HEX value of - the minimum Python version supporting this API. - -Documentation -------------- - -- bpo-28929: Link the documentation to its source file on GitHub. - -- bpo-25008: Document smtpd.py as effectively deprecated and add a pointer to - aiosmtpd, a third-party asyncio-based replacement. - -- Issue #26355: Add canonical header link on each page to corresponding major - version of the documentation. Patch by Matthias Bussonnier. - -- Issue #29349: Fix Python 2 syntax in code for building the documentation. - -Tests ------ - -- bpo-28087: Skip test_asyncore and test_eintr poll failures on macOS. - Skip some tests of select.poll when running on macOS due to unresolved - issues with the underlying system poll function on some macOS versions. - -- Issue #29571: to match the behaviour of the ``re.LOCALE`` flag, - test_re.test_locale_flag now uses ``locale.getpreferredencoding(False)`` to - determine the candidate encoding for the test regex (allowing it to correctly - skip the test when the default locale encoding is a multi-byte encoding) - -- Issue #28950: Disallow -j0 to be combined with -T/-l in regrtest - command line arguments. - -- Issue #28683: Fix the tests that bind() a unix socket and raise - PermissionError on Android for a non-root user. - -- Issue #26939: Add the support.setswitchinterval() function to fix - test_functools hanging on the Android armv7 qemu emulator. - -Build ------ - -- bpo-27593: sys.version and the platform module python_build(), - python_branch(), and python_revision() functions now use - git information rather than hg when building from a repo. - -- bpo-29572: Update Windows build and OS X installers to use OpenSSL 1.0.2k. - -- Issue #26851: Set Android compilation and link flags. - -- Issue #28768: Fix implicit declaration of function _setmode. Patch by - Masayuki Yamamoto - -- Issue #29080: Removes hard dependency on hg.exe from PCBuild/build.bat - -- Issue #23903: Added missed names to PC/python3.def. - -- Issue #28762: lockf() is available on Android API level 24, but the F_LOCK - macro is not defined in android-ndk-r13. - -- Issue #28538: Fix the compilation error that occurs because if_nameindex() is - available on Android API level 24, but the if_nameindex structure is not - defined. - -- Issue #20211: Do not add the directory for installing C header files and the - directory for installing object code libraries to the cross compilation - search paths. Original patch by Thomas Petazzoni. - -- Issue #28849: Do not define sys.implementation._multiarch on Android. - - -What's New in Python 3.6.0? -=========================== - -*Release date: 2016-12-23* - -- No changes since release candidate 2 - - -What's New in Python 3.6.0 release candidate 2? -=============================================== - -*Release date: 2016-12-16* - -Core and Builtins ------------------ - -- Issue #28147: Fix a memory leak in split-table dictionaries: setattr() - must not convert combined table into split table. Patch written by INADA - Naoki. - -- Issue #28990: Fix asyncio SSL hanging if connection is closed before - handshake is completed. (Patch by HoHo-Ho) - -Tools/Demos ------------ - -- Issue #28770: Fix python-gdb.py for fastcalls. - -Windows -------- - -- Issue #28896: Deprecate WindowsRegistryFinder. - -Build ------ - -- Issue #28898: Prevent gdb build errors due to HAVE_LONG_LONG redefinition. - - -What's New in Python 3.6.0 release candidate 1? -=============================================== - -*Release date: 2016-12-06* - -Core and Builtins ------------------ - -- Issue #23722: Rather than silently producing a class that doesn't support - zero-argument ``super()`` in methods, failing to pass the new - ``__classcell__`` namespace entry up to ``type.__new__`` now results in a - ``DeprecationWarning`` and a class that supports zero-argument ``super()``. - -- Issue #28797: Modifying the class __dict__ inside the __set_name__ method of - a descriptor that is used inside that class no longer prevents calling the - __set_name__ method of other descriptors. - -- Issue #28782: Fix a bug in the implementation ``yield from`` when checking - if the next instruction is YIELD_FROM. Regression introduced by WORDCODE - (issue #26647). - -Library -------- - -- Issue #27030: Unknown escapes in re.sub() replacement template are allowed - again. But they still are deprecated and will be disabled in 3.7. - -- Issue #28835: Fix a regression introduced in warnings.catch_warnings(): - call warnings.showwarning() if it was overriden inside the context manager. - -- Issue #27172: To assist with upgrades from 2.7, the previously documented - deprecation of ``inspect.getfullargspec()`` has been reversed. This decision - may be revisited again after the Python 2.7 branch is no longer officially - supported. - -- Issue #26273: Add new :data:`socket.TCP_CONGESTION` (Linux 2.6.13) and - :data:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by - Omar Sandoval. - -- Issue #24142: Reading a corrupt config file left configparser in an - invalid state. Original patch by Florian Höch. - -- Issue #28843: Fix asyncio C Task to handle exceptions __traceback__. - -C API ------ - -- Issue #28808: PyUnicode_CompareWithASCIIString() now never raises exceptions. - -Documentation -------------- - -- Issue #23722: The data model reference and the porting section in the What's - New guide now cover the additional ``__classcell__`` handling needed for - custom metaclasses to fully support PEP 487 and zero-argument ``super()``. - -Tools/Demos ------------ - -- Issue #28023: Fix python-gdb.py didn't support new dict implementation. - - -What's New in Python 3.6.0 beta 4? -================================== - -*Release date: 2016-11-21* - -Core and Builtins ------------------ - -- Issue #28532: Show sys.version when -V option is supplied twice. - -- Issue #27100: The with-statement now checks for __enter__ before it - checks for __exit__. This gives less confusing error messages when - both methods are missing. Patch by Jonathan Ellington. - -- Issue #28746: Fix the set_inheritable() file descriptor method on platforms - that do not have the ioctl FIOCLEX and FIONCLEX commands. - -- Issue #26920: Fix not getting the locale's charset upon initializing the - interpreter, on platforms that do not have langinfo. - -- Issue #28648: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X - when decode astral characters. Patch by Xiang Zhang. - -- Issue #19398: Extra slash no longer added to sys.path components in case of - empty compile-time PYTHONPATH components. - -- Issue #28665: Improve speed of the STORE_DEREF opcode by 40%. - -- Issue #28583: PyDict_SetDefault didn't combine split table when needed. - Patch by Xiang Zhang. - -- Issue #27243: Change PendingDeprecationWarning -> DeprecationWarning. - As it was agreed in the issue, __aiter__ returning an awaitable - should result in PendingDeprecationWarning in 3.5 and in - DeprecationWarning in 3.6. - -- Issue #26182: Fix a refleak in code that raises DeprecationWarning. - -- Issue #28721: Fix asynchronous generators aclose() and athrow() to - handle StopAsyncIteration propagation properly. - -Library -------- - -- Issue #28752: Restored the __reduce__() methods of datetime objects. - -- Issue #28727: Regular expression patterns, _sre.SRE_Pattern objects created - by re.compile(), become comparable (only x==y and x!=y operators). This - change should fix the issue #18383: don't duplicate warning filters when the - warnings module is reloaded (thing usually only done in unit tests). - -- Issue #20572: The subprocess.Popen.wait method's undocumented - endtime parameter now raises a DeprecationWarning. - -- Issue #25659: In ctypes, prevent a crash calling the from_buffer() and - from_buffer_copy() methods on abstract classes like Array. - -- Issue #19717: Makes Path.resolve() succeed on paths that do not exist. - Patch by Vajrasky Kok - -- Issue #28563: Fixed possible DoS and arbitrary code execution when handle - plural form selections in the gettext module. The expression parser now - supports exact syntax supported by GNU gettext. - -- Issue #28387: Fixed possible crash in _io.TextIOWrapper deallocator when - the garbage collector is invoked in other thread. Based on patch by - Sebastian Cufre. - -- Issue #28600: Optimize loop.call_soon. - -- Issue #28613: Fix get_event_loop() return the current loop if - called from coroutines/callbacks. - -- Issue #28634: Fix asyncio.isfuture() to support unittest.Mock. - -- Issue #26081: Fix refleak in _asyncio.Future.__iter__().throw. - -- Issue #28639: Fix inspect.isawaitable to always return bool - Patch by Justin Mayfield. - -- Issue #28652: Make loop methods reject socket kinds they do not support. - -- Issue #28653: Fix a refleak in functools.lru_cache. - -- Issue #28703: Fix asyncio.iscoroutinefunction to handle Mock objects. - -- Issue #28704: Fix create_unix_server to support Path-like objects - (PEP 519). - -- Issue #28720: Add collections.abc.AsyncGenerator. - -Documentation -------------- - -- Issue #28513: Documented command-line interface of zipfile. - -Tests ------ - -- Issue #28666: Now test.support.rmtree is able to remove unwritable or - unreadable directories. - -- Issue #23839: Various caches now are cleared before running every test file. - -Build ------ - -- Issue #10656: Fix out-of-tree building on AIX. Patch by Tristan Carel and - Michael Haubenwallner. - -- Issue #26359: Rename --with-optimiations to --enable-optimizations. - -- Issue #28676: Prevent missing 'getentropy' declaration warning on macOS. - Patch by Gareth Rees. - - -What's New in Python 3.6.0 beta 3? -================================== - -*Release date: 2016-10-31* - -Core and Builtins ------------------ - -- Issue #28128: Deprecation warning for invalid str and byte escape - sequences now prints better information about where the error - occurs. Patch by Serhiy Storchaka and Eric Smith. - -- Issue #28509: dict.update() no longer allocate unnecessary large memory. - -- Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug - build. - -- Issue #28517: Fixed of-by-one error in the peephole optimizer that caused - keeping unreachable code. - -- Issue #28214: Improved exception reporting for problematic __set_name__ - attributes. - -- Issue #23782: Fixed possible memory leak in _PyTraceback_Add() and exception - loss in PyTraceBack_Here(). - -- Issue #28471: Fix "Python memory allocator called without holding the GIL" - crash in socket.setblocking. - -Library -------- - -- Issue #27517: LZMA compressor and decompressor no longer raise exceptions if - given empty data twice. Patch by Benjamin Fogle. - -- Issue #28549: Fixed segfault in curses's addch() with ncurses6. - -- Issue #28449: tarfile.open() with mode "r" or "r:" now tries to open a tar - file with compression before trying to open it without compression. Otherwise - it had 50% chance failed with ignore_zeros=True. - -- Issue #23262: The webbrowser module now supports Firefox 36+ and derived - browsers. Based on patch by Oleg Broytman. - -- Issue #27939: Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused - by representing the scale as float value internally in Tk. tkinter.IntVar - now works if float value is set to underlying Tk variable. - -- Issue #18844: The various ways of specifying weights for random.choices() - now produce the same result sequences. - -- Issue #28255: calendar.TextCalendar().prmonth() no longer prints a space - at the start of new line after printing a month's calendar. Patch by - Xiang Zhang. - -- Issue #20491: The textwrap.TextWrapper class now honors non-breaking spaces. - Based on patch by Kaarle Ritvanen. - -- Issue #28353: os.fwalk() no longer fails on broken links. - -- Issue #28430: Fix iterator of C implemented asyncio.Future doesn't accept - non-None value is passed to it.send(val). - -- Issue #27025: Generated names for Tkinter widgets now start by the "!" prefix - for readability. - -- Issue #25464: Fixed HList.header_exists() in tkinter.tix module by addin - a workaround to Tix library bug. - -- Issue #28488: shutil.make_archive() no longer adds entry "./" to ZIP archive. - -- Issue #25953: re.sub() now raises an error for invalid numerical group - reference in replacement template even if the pattern is not found in - the string. Error message for invalid group reference now includes the - group index and the position of the reference. - Based on patch by SilentGhost. - -- Issue #18219: Optimize csv.DictWriter for large number of columns. - Patch by Mariatta Wijaya. - -- Issue #28448: Fix C implemented asyncio.Future didn't work on Windows. - -- Issue #28480: Fix error building socket module when multithreading is - disabled. - -- Issue #24452: Make webbrowser support Chrome on Mac OS X. - -- Issue #20766: Fix references leaked by pdb in the handling of SIGINT - handlers. - -- Issue #28492: Fix how StopIteration exception is raised in _asyncio.Future. - -- Issue #28500: Fix asyncio to handle async gens GC from another thread. - -- Issue #26923: Fix asyncio.Gather to refuse being cancelled once all - children are done. - Patch by Johannes Ebke. - -- Issue #26796: Don't configure the number of workers for default - threadpool executor. - Initial patch by Hans Lawrenz. - -- Issue #28544: Implement asyncio.Task in C. - -Windows -------- - -- Issue #28522: Fixes mishandled buffer reallocation in getpathp.c - -Build ------ - -- Issue #28444: Fix missing extensions modules when cross compiling. - -- Issue #28208: Update Windows build and OS X installers to use SQLite 3.14.2. - -- Issue #28248: Update Windows build and OS X installers to use OpenSSL 1.0.2j. - -Tests ------ - -- Issue #26944: Fix test_posix for Android where 'id -G' is entirely wrong or - missing the effective gid. - -- Issue #28409: regrtest: fix the parser of command line arguments. - - -What's New in Python 3.6.0 beta 2? -================================== - -*Release date: 2016-10-10* - -Core and Builtins ------------------ - -- Issue #28183: Optimize and cleanup dict iteration. - -- Issue #26081: Added C implementation of asyncio.Future. - Original patch by Yury Selivanov. - -- Issue #28379: Added sanity checks and tests for PyUnicode_CopyCharacters(). - Patch by Xiang Zhang. - -- Issue #28376: The type of long range iterator is now registered as Iterator. - Patch by Oren Milman. - -- Issue #28376: Creating instances of range_iterator by calling range_iterator - type now is deprecated. Patch by Oren Milman. - -- Issue #28376: The constructor of range_iterator now checks that step is not 0. - Patch by Oren Milman. - -- Issue #26906: Resolving special methods of uninitialized type now causes - implicit initialization of the type instead of a fail. - -- Issue #18287: PyType_Ready() now checks that tp_name is not NULL. - Original patch by Niklas Koep. - -- Issue #24098: Fixed possible crash when AST is changed in process of - compiling it. - -- Issue #28201: Dict reduces possibility of 2nd conflict in hash table when - hashes have same lower bits. - -- Issue #28350: String constants with null character no longer interned. - -- Issue #26617: Fix crash when GC runs during weakref callbacks. - -- Issue #27942: String constants now interned recursively in tuples and frozensets. - -- Issue #21578: Fixed misleading error message when ImportError called with - invalid keyword args. - -- Issue #28203: Fix incorrect type in complex(1.0, {2:3}) error message. - Patch by Soumya Sharma. - -- Issue #28086: Single var-positional argument of tuple subtype was passed - unscathed to the C-defined function. Now it is converted to exact tuple. - -- Issue #28214: Now __set_name__ is looked up on the class instead of the - instance. - -- Issue #27955: Fallback on reading /dev/urandom device when the getrandom() - syscall fails with EPERM, for example when blocked by SECCOMP. - -- Issue #28192: Don't import readline in isolated mode. - -- Upgrade internal unicode databases to Unicode version 9.0.0. - -- Issue #28131: Fix a regression in zipimport's compile_source(). zipimport - should use the same optimization level as the interpreter. - -- Issue #28126: Replace Py_MEMCPY with memcpy(). Visual Studio can properly - optimize memcpy(). - -- Issue #28120: Fix dict.pop() for splitted dictionary when trying to remove a - "pending key" (Not yet inserted in split-table). Patch by Xiang Zhang. - -- Issue #26182: Raise DeprecationWarning when async and await keywords are - used as variable/attribute/class/function name. - -Library -------- - -- Issue #27998: Fixed bytes path support in os.scandir() on Windows. - Patch by Eryk Sun. - -- Issue #28317: The disassembler now decodes FORMAT_VALUE argument. - -- Issue #26293: Fixed writing ZIP files that starts not from the start of the - file. Offsets in ZIP file now are relative to the start of the archive in - conforming to the specification. - -- Issue #28380: unittest.mock Mock autospec functions now properly support - assert_called, assert_not_called, and assert_called_once. - -- Issue #27181 remove statistics.geometric_mean and defer until 3.7. - -- Issue #28229: lzma module now supports pathlib. - -- Issue #28321: Fixed writing non-BMP characters with binary format in plistlib. - -- Issue #28225: bz2 module now supports pathlib. Initial patch by Ethan Furman. - -- Issue #28227: gzip now supports pathlib. Patch by Ethan Furman. - -- Issue #27358: Optimized merging var-keyword arguments and improved error - message when passing a non-mapping as a var-keyword argument. - -- Issue #28257: Improved error message when passing a non-iterable as - a var-positional argument. Added opcode BUILD_TUPLE_UNPACK_WITH_CALL. - -- Issue #28322: Fixed possible crashes when unpickle itertools objects from - incorrect pickle data. Based on patch by John Leitch. - -- Issue #28228: imghdr now supports pathlib. - -- Issue #28226: compileall now supports pathlib. - -- Issue #28314: Fix function declaration (C flags) for the getiterator() method - of xml.etree.ElementTree.Element. - -- Issue #28148: Stop using localtime() and gmtime() in the time - module. - - Introduced platform independent _PyTime_localtime API that is - similar to POSIX localtime_r, but available on all platforms. Patch - by Ed Schouten. - -- Issue #28253: Fixed calendar functions for extreme months: 0001-01 - and 9999-12. - - Methods itermonthdays() and itermonthdays2() are reimplemented so - that they don't call itermonthdates() which can cause datetime.date - under/overflow. - -- Issue #28275: Fixed possible use after free in the decompress() - methods of the LZMADecompressor and BZ2Decompressor classes. - Original patch by John Leitch. - -- Issue #27897: Fixed possible crash in sqlite3.Connection.create_collation() - if pass invalid string-like object as a name. Patch by Xiang Zhang. - -- Issue #18844: random.choices() now has k as a keyword-only argument - to improve the readability of common cases and come into line - with the signature used in other languages. - -- Issue #18893: Fix invalid exception handling in Lib/ctypes/macholib/dyld.py. - Patch by Madison May. - -- Issue #27611: Fixed support of default root window in the tkinter.tix module. - Added the master parameter in the DisplayStyle constructor. - -- Issue #27348: In the traceback module, restore the formatting of exception - messages like "Exception: None". This fixes a regression introduced in - 3.5a2. - -- Issue #25651: Allow falsy values to be used for msg parameter of subTest(). - -- Issue #27778: Fix a memory leak in os.getrandom() when the getrandom() is - interrupted by a signal and a signal handler raises a Python exception. - -- Issue #28200: Fix memory leak on Windows in the os module (fix - path_converter() function). - -- Issue #25400: RobotFileParser now correctly returns default values for - crawl_delay and request_rate. Initial patch by Peter Wirtz. - -- Issue #27932: Prevent memory leak in win32_ver(). - -- Fix UnboundLocalError in socket._sendfile_use_sendfile. - -- Issue #28075: Check for ERROR_ACCESS_DENIED in Windows implementation of - os.stat(). Patch by Eryk Sun. - -- Issue #22493: Warning message emitted by using inline flags in the middle of - regular expression now contains a (truncated) regex pattern. - Patch by Tim Graham. - -- Issue #25270: Prevent codecs.escape_encode() from raising SystemError when - an empty bytestring is passed. - -- Issue #28181: Get antigravity over HTTPS. Patch by Kaartic Sivaraam. - -- Issue #25895: Enable WebSocket URL schemes in urllib.parse.urljoin. - Patch by Gergely Imreh and Markus Holtermann. - -- Issue #28114: Fix a crash in parse_envlist() when env contains byte strings. - Patch by Eryk Sun. - -- Issue #27599: Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp(). - -- Issue #27906: Fix socket accept exhaustion during high TCP traffic. - Patch by Kevin Conway. - -- Issue #28174: Handle when SO_REUSEPORT isn't properly supported. - Patch by Seth Michael Larson. - -- Issue #26654: Inspect functools.partial in asyncio.Handle.__repr__. - Patch by iceboy. - -- Issue #26909: Fix slow pipes IO in asyncio. - Patch by INADA Naoki. - -- Issue #28176: Fix callbacks race in asyncio.SelectorLoop.sock_connect. - -- Issue #27759: Fix selectors incorrectly retain invalid file descriptors. - Patch by Mark Williams. - -- Issue #28368: Refuse monitoring processes if the child watcher has no - loop attached. - Patch by Vincent Michel. - -- Issue #28369: Raise RuntimeError when transport's FD is used with - add_reader, add_writer, etc. - -- Issue #28370: Speedup asyncio.StreamReader.readexactly. - Patch by Коренберг Марк. - -- Issue #28371: Deprecate passing asyncio.Handles to run_in_executor. - -- Issue #28372: Fix asyncio to support formatting of non-python coroutines. - -- Issue #28399: Remove UNIX socket from FS before binding. - Patch by Коренберг Марк. - -- Issue #27972: Prohibit Tasks to await on themselves. - -Windows -------- - -- Issue #28402: Adds signed catalog files for stdlib on Windows. - -- Issue #28333: Enables Unicode for ps1/ps2 and input() prompts. (Patch by - Eryk Sun) - -- Issue #28251: Improvements to help manuals on Windows. - -- Issue #28110: launcher.msi has different product codes between 32-bit and - 64-bit - -- Issue #28161: Opening CON for write access fails - -- Issue #28162: WindowsConsoleIO readall() fails if first line starts with - Ctrl+Z - -- Issue #28163: WindowsConsoleIO fileno() passes wrong flags to - _open_osfhandle - -- Issue #28164: _PyIO_get_console_type fails for various paths - -- Issue #28137: Renames Windows path file to ._pth - -- Issue #28138: Windows ._pth file should allow import site - -C API ------ - -- Issue #28426: Deprecated undocumented functions PyUnicode_AsEncodedObject(), - PyUnicode_AsDecodedObject(), PyUnicode_AsDecodedUnicode() and - PyUnicode_AsEncodedUnicode(). - -Build ------ - -- Issue #28258: Fixed build with Estonian locale (python-config and distclean - targets in Makefile). Patch by Arfrever Frehtes Taifersar Arahesis. - -- Issue #26661: setup.py now detects system libffi with multiarch wrapper. - -- Issue #15819: Remove redundant include search directory option for building - outside the source tree. - -Tests ------ - -- Issue #28217: Adds _testconsole module to test console input. - - -What's New in Python 3.6.0 beta 1? -================================== - -*Release date: 2016-09-12* - -Core and Builtins ------------------ - -- Issue #23722: The __class__ cell used by zero-argument super() is now - initialized from type.__new__ rather than __build_class__, so class methods - relying on that will now work correctly when called from metaclass methods - during class creation. Patch by Martin Teichmann. - -- Issue #25221: Fix corrupted result from PyLong_FromLong(0) when Python - is compiled with NSMALLPOSINTS = 0. - -- Issue #27080: Implement formatting support for PEP 515. Initial patch - by Chris Angelico. - -- Issue #27199: In tarfile, expose copyfileobj bufsize to improve throughput. - Patch by Jason Fried. - -- Issue #27948: In f-strings, only allow backslashes inside the braces - (where the expressions are). This is a breaking change from the 3.6 - alpha releases, where backslashes are allowed anywhere in an - f-string. Also, require that expressions inside f-strings be - enclosed within literal braces, and not escapes like - ``f'\x7b"hi"\x7d'``. - -- Issue #28046: Remove platform-specific directories from sys.path. - -- Issue #28071: Add early-out for differencing from an empty set. - -- Issue #25758: Prevents zipimport from unnecessarily encoding a filename - (patch by Eryk Sun) - -- Issue #25856: The __module__ attribute of extension classes and functions - now is interned. This leads to more compact pickle data with protocol 4. - -- Issue #27213: Rework CALL_FUNCTION* opcodes to produce shorter and more - efficient bytecode. Patch by Demur Rumed, design by Serhiy Storchaka, - reviewed by Serhiy Storchaka and Victor Stinner. - -- Issue #26331: Implement tokenizing support for PEP 515. Patch by Georg Brandl. - -- Issue #27999: Make "global after use" a SyntaxError, and ditto for nonlocal. - Patch by Ivan Levkivskyi. - -- Issue #28003: Implement PEP 525 -- Asynchronous Generators. - -- Issue #27985: Implement PEP 526 -- Syntax for Variable Annotations. - Patch by Ivan Levkivskyi. - -- Issue #26058: Add a new private version to the builtin dict type, incremented - at each dictionary creation and at each dictionary change. Implementation of - the PEP 509. - -- Issue #27364: A backslash-character pair that is not a valid escape sequence - now generates a DeprecationWarning. Patch by Emanuel Barry. - -- Issue #27350: `dict` implementation is changed like PyPy. It is more compact - and preserves insertion order. - (Concept developed by Raymond Hettinger and patch by Inada Naoki.) - -- Issue #27911: Remove unnecessary error checks in - ``exec_builtin_or_dynamic()``. - -- Issue #27078: Added BUILD_STRING opcode. Optimized f-strings evaluation. - -- Issue #17884: Python now requires systems with inttypes.h and stdint.h - -- Issue #27961: Require platforms to support ``long long``. Python hasn't - compiled without ``long long`` for years, so this is basically a formality. - -- Issue #27355: Removed support for Windows CE. It was never finished, - and Windows CE is no longer a relevant platform for Python. - -- Implement PEP 523. - -- Issue #27870: A left shift of zero by a large integer no longer attempts - to allocate large amounts of memory. - -- Issue #25402: In int-to-decimal-string conversion, improve the estimate - of the intermediate memory required, and remove an unnecessarily strict - overflow check. Patch by Serhiy Storchaka. - -- Issue #27214: In long_invert, be more careful about modifying object - returned by long_add, and remove an unnecessary check for small longs. - Thanks Oren Milman for analysis and patch. - -- Issue #27506: Support passing the bytes/bytearray.translate() "delete" - argument by keyword. - -- Issue #27812: Properly clear out a generator's frame's backreference to the - generator to prevent crashes in frame.clear(). - -- Issue #27811: Fix a crash when a coroutine that has not been awaited is - finalized with warnings-as-errors enabled. - -- Issue #27587: Fix another issue found by PVS-Studio: Null pointer check - after use of 'def' in _PyState_AddModule(). - Initial patch by Christian Heimes. - -- Issue #27792: The modulo operation applied to ``bool`` and other - ``int`` subclasses now always returns an ``int``. Previously - the return type depended on the input values. Patch by Xiang Zhang. - -- Issue #26984: int() now always returns an instance of exact int. - -- Issue #25604: Fix a minor bug in integer true division; this bug could - potentially have caused off-by-one-ulp results on platforms with - unreliable ldexp implementations. - -- Issue #24254: Make class definition namespace ordered by default. - -- Issue #27662: Fix an overflow check in ``List_New``: the original code was - checking against ``Py_SIZE_MAX`` instead of the correct upper bound of - ``Py_SSIZE_T_MAX``. Patch by Xiang Zhang. - -- Issue #27782: Multi-phase extension module import now correctly allows the - ``m_methods`` field to be used to add module level functions to instances - of non-module types returned from ``Py_create_mod``. Patch by Xiang Zhang. - -- Issue #27936: The round() function accepted a second None argument - for some types but not for others. Fixed the inconsistency by - accepting None for all numeric types. - -- Issue #27487: Warn if a submodule argument to "python -m" or - runpy.run_module() is found in sys.modules after parent packages are - imported, but before the submodule is executed. - -- Issue #27157: Make only type() itself accept the one-argument form. - Patch by Eryk Sun and Emanuel Barry. - -- Issue #27558: Fix a SystemError in the implementation of "raise" statement. - In a brand new thread, raise a RuntimeError since there is no active - exception to reraise. Patch written by Xiang Zhang. - -- Issue #28008: Implement PEP 530 -- asynchronous comprehensions. - -- Issue #27942: Fix memory leak in codeobject.c - -Library -------- - -- Issue #28732: Fix crash in os.spawnv() with no elements in args - -- Issue #28485: Always raise ValueError for negative - compileall.compile_dir(workers=...) parameter, even when multithreading is - unavailable. - -- Issue #28037: Use sqlite3_get_autocommit() instead of setting - Connection->inTransaction manually. - -- Issue #25283: Attributes tm_gmtoff and tm_zone are now available on - all platforms in the return values of time.localtime() and - time.gmtime(). - -- Issue #24454: Regular expression match object groups are now - accessible using __getitem__. "mo[x]" is equivalent to - "mo.group(x)". - -- Issue #10740: sqlite3 no longer implicitly commit an open transaction - before DDL statements. - -- Issue #17941: Add a *module* parameter to collections.namedtuple(). - -- Issue #22493: Inline flags now should be used only at the start of the - regular expression. Deprecation warning is emitted if uses them in the - middle of the regular expression. - -- Issue #26885: xmlrpc now supports unmarshalling additional data types used - by Apache XML-RPC implementation for numerics and None. - -- Issue #28070: Fixed parsing inline verbose flag in regular expressions. - -- Issue #19500: Add client-side SSL session resumption to the ssl module. - -- Issue #28022: Deprecate ssl-related arguments in favor of SSLContext. The - deprecation include manual creation of SSLSocket and certfile/keyfile - (or similar) in ftplib, httplib, imaplib, smtplib, poplib and urllib. - -- Issue #28043: SSLContext has improved default settings: OP_NO_SSLv2, - OP_NO_SSLv3, OP_NO_COMPRESSION, OP_CIPHER_SERVER_PREFERENCE, - OP_SINGLE_DH_USE, OP_SINGLE_ECDH_USE and HIGH ciphers without MD5. - -- Issue #24693: Changed some RuntimeError's in the zipfile module to more - appropriate types. Improved some error messages and debugging output. - -- Issue #17909: ``json.load`` and ``json.loads`` now support binary input - encoded as UTF-8, UTF-16 or UTF-32. Patch by Serhiy Storchaka. - -- Issue #27137: the pure Python fallback implementation of ``functools.partial`` - now matches the behaviour of its accelerated C counterpart for subclassing, - pickling and text representation purposes. Patch by Emanuel Barry and - Serhiy Storchaka. - -- Fix possible integer overflows and crashes in the mmap module with unusual - usage patterns. - -- Issue #1703178: Fix the ability to pass the --link-objects option to the - distutils build_ext command. - -- Issue #28019: itertools.count() no longer rounds non-integer step in range - between 1.0 and 2.0 to 1. - -- Issue #18401: Pdb now supports the 'readrc' keyword argument to control - whether .pdbrc files should be read. Patch by Martin Matusiak and - Sam Kimbrel. - -- Issue #25969: Update the lib2to3 grammar to handle the unpacking - generalizations added in 3.5. - -- Issue #14977: mailcap now respects the order of the lines in the mailcap - files ("first match"), as required by RFC 1542. Patch by Michael Lazar. - -- Issue #28082: Convert re flag constants to IntFlag. - -- Issue #28025: Convert all ssl module constants to IntEnum and IntFlags. - SSLContext properties now return flags and enums. - -- Issue #23591: Add Flag, IntFlag, and auto() to enum module. - -- Issue #433028: Added support of modifier spans in regular expressions. - -- Issue #24594: Validates persist parameter when opening MSI database - -- Issue #17582: xml.etree.ElementTree nows preserves whitespaces in attributes - (Patch by Duane Griffin. Reviewed and approved by Stefan Behnel.) - -- Issue #28047: Fixed calculation of line length used for the base64 CTE - in the new email policies. - -- Issue #27576: Fix call order in OrderedDict.__init__(). - -- email.generator.DecodedGenerator now supports the policy keyword. - -- Issue #28027: Remove undocumented modules from ``Lib/plat-*``: IN, CDROM, - DLFCN, TYPES, CDIO, and STROPTS. - -- Issue #27445: Don't pass str(_charset) to MIMEText.set_payload(). - Patch by Claude Paroz. - -- Issue #24277: The new email API is no longer provisional, and the docs - have been reorganized and rewritten to emphasize the new API. - -- Issue #22450: urllib now includes an ``Accept: */*`` header among the - default headers. This makes the results of REST API requests more - consistent and predictable especially when proxy servers are involved. - -- lib2to3.pgen3.driver.load_grammar() now creates a stable cache file - between runs given the same Grammar.txt input regardless of the hash - randomization setting. - -- Issue #28005: Allow ImportErrors in encoding implementation to propagate. - -- Issue #26667: Support path-like objects in importlib.util. - -- Issue #27570: Avoid zero-length memcpy() etc calls with null source - pointers in the "ctypes" and "array" modules. - -- Issue #22233: Break email header lines *only* on the RFC specified CR and LF - characters, not on arbitrary unicode line breaks. This also fixes a bug in - HTTP header parsing. - -- Issue #27331: The email.mime classes now all accept an optional policy keyword. - -- Issue #27988: Fix email iter_attachments incorrect mutation of payload list. - -- Issue #16113: Add SHA-3 and SHAKE support to hashlib module. - -- Eliminate a tautological-pointer-compare warning in _scproxy.c. - -- Issue #27776: The :func:`os.urandom` function does now block on Linux 3.17 - and newer until the system urandom entropy pool is initialized to increase - the security. This change is part of the :pep:`524`. - -- Issue #27778: Expose the Linux ``getrandom()`` syscall as a new - :func:`os.getrandom` function. This change is part of the :pep:`524`. - -- Issue #27691: Fix ssl module's parsing of GEN_RID subject alternative name - fields in X.509 certs. - -- Issue #18844: Add random.choices(). - -- Issue #25761: Improved error reporting about truncated pickle data in - C implementation of unpickler. UnpicklingError is now raised instead of - AttributeError and ValueError in some cases. - -- Issue #26798: Add BLAKE2 (blake2b and blake2s) to hashlib. - -- Issue #26032: Optimized globbing in pathlib by using os.scandir(); it is now - about 1.5--4 times faster. - -- Issue #25596: Optimized glob() and iglob() functions in the - glob module; they are now about 3--6 times faster. - -- Issue #27928: Add scrypt (password-based key derivation function) to - hashlib module (requires OpenSSL 1.1.0). - -- Issue #27850: Remove 3DES from ssl module's default cipher list to counter - measure sweet32 attack (CVE-2016-2183). - -- Issue #27766: Add ChaCha20 Poly1305 to ssl module's default ciper list. - (Required OpenSSL 1.1.0 or LibreSSL). - -- Issue #25387: Check return value of winsound.MessageBeep. - -- Issue #27866: Add SSLContext.get_ciphers() method to get a list of all - enabled ciphers. - -- Issue #27744: Add AF_ALG (Linux Kernel crypto) to socket module. - -- Issue #26470: Port ssl and hashlib module to OpenSSL 1.1.0. - -- Issue #11620: Fix support for SND_MEMORY in winsound.PlaySound. Based on a - patch by Tim Lesher. - -- Issue #11734: Add support for IEEE 754 half-precision floats to the - struct module. Based on a patch by Eli Stevens. - -- Issue #27919: Deprecated ``extra_path`` distribution option in distutils - packaging. - -- Issue #23229: Add new ``cmath`` constants: ``cmath.inf`` and ``cmath.nan`` to - match ``math.inf`` and ``math.nan``, and also ``cmath.infj`` and - ``cmath.nanj`` to match the format used by complex repr. - -- Issue #27842: The csv.DictReader now returns rows of type OrderedDict. - (Contributed by Steve Holden.) - -- Remove support for passing a file descriptor to os.access. It never worked but - previously didn't raise. - -- Issue #12885: Fix error when distutils encounters symlink. - -- Issue #27881: Fixed possible bugs when setting sqlite3.Connection.isolation_level. - Based on patch by Xiang Zhang. - -- Issue #27861: Fixed a crash in sqlite3.Connection.cursor() when a factory - creates not a cursor. Patch by Xiang Zhang. - -- Issue #19884: Avoid spurious output on OS X with Gnu Readline. - -- Issue #27706: Restore deterministic behavior of random.Random().seed() - for string seeds using seeding version 1. Allows sequences of calls - to random() to exactly match those obtained in Python 2. - Patch by Nofar Schnider. - -- Issue #10513: Fix a regression in Connection.commit(). Statements should - not be reset after a commit. - -- Issue #12319: Chunked transfer encoding support added to - http.client.HTTPConnection requests. The - urllib.request.AbstractHTTPHandler class does not enforce a Content-Length - header any more. If a HTTP request has a file or iterable body, but no - Content-Length header, the library now falls back to use chunked transfer- - encoding. - -- A new version of typing.py from https://github.com/python/typing: - - Collection (only for 3.6) (Issue #27598) - - Add FrozenSet to __all__ (upstream #261) - - fix crash in _get_type_vars() (upstream #259) - - Remove the dict constraint in ForwardRef._eval_type (upstream #252) - -- Issue #27832: Make ``_normalize`` parameter to ``Fraction`` constuctor - keyword-only, so that ``Fraction(2, 3, 4)`` now raises ``TypeError``. - -- Issue #27539: Fix unnormalised ``Fraction.__pow__`` result in the case - of negative exponent and negative base. - -- Issue #21718: cursor.description is now available for queries using CTEs. - -- Issue #27819: In distutils sdists, simply produce the "gztar" (gzipped tar - format) distributions on all platforms unless "formats" is supplied. - -- Issue #2466: posixpath.ismount now correctly recognizes mount points which - the user does not have permission to access. - -- Issue #9998: On Linux, ctypes.util.find_library now looks in LD_LIBRARY_PATH - for shared libraries. - -- Issue #27573: exit message for code.interact is now configurable. - -- Issue #27930: Improved behaviour of logging.handlers.QueueListener. - Thanks to Paulo Andrade and Petr Viktorin for the analysis and patch. - -- Issue #6766: Distributed reference counting added to multiprocessing - to support nesting of shared values / proxy objects. - -- Issue #21201: Improves readability of multiprocessing error message. Thanks - to Wojciech Walczak for patch. - -- asyncio: Add set_protocol / get_protocol to Transports. - -- Issue #27456: asyncio: Set TCP_NODELAY by default. - -IDLE ----- - -- Issue #15308: Add 'interrupt execution' (^C) to Shell menu. - Patch by Roger Serwy, updated by Bayard Randel. - -- Issue #27922: Stop IDLE tests from 'flashing' gui widgets on the screen. - -- Issue #27891: Consistently group and sort imports within idlelib modules. - -- Issue #17642: add larger font sizes for classroom projection. - -- Add version to title of IDLE help window. - -- Issue #25564: In section on IDLE -- console differences, mention that - using exec means that __builtins__ is defined for each statement. - -- Issue #27821: Fix 3.6.0a3 regression that prevented custom key sets - from being selected when no custom theme was defined. - -C API ------ - -- Issue #26900: Excluded underscored names and other private API from limited API. - -- Issue #26027: Add support for path-like objects in PyUnicode_FSConverter() & - PyUnicode_FSDecoder(). - -Tests ------ - -- Issue #27427: Additional tests for the math module. Patch by Francisco Couzo. - -- Issue #27953: Skip math and cmath tests that fail on OS X 10.4 due to a - poor libm implementation of tan. - -- Issue #26040: Improve test_math and test_cmath coverage and rigour. Patch by - Jeff Allen. - -- Issue #27787: Call gc.collect() before checking each test for "dangling - threads", since the dangling threads are weak references. - -Build ------ - -- Issue #27566: Fix clean target in freeze makefile (patch by Lisa Roach) - -- Issue #27705: Update message in validate_ucrtbase.py - -- Issue #27976: Deprecate building _ctypes with the bundled copy of libffi on - non-OSX UNIX platforms. - -- Issue #27983: Cause lack of llvm-profdata tool when using clang as - required for PGO linking to be a configure time error rather than - make time when --with-optimizations is enabled. Also improve our - ability to find the llvm-profdata tool on MacOS and some Linuxes. - -- Issue #21590: Support for DTrace and SystemTap probes. - -- Issue #26307: The profile-opt build now applies PGO to the built-in modules. - -- Issue #26359: Add the --with-optimizations flag to turn on LTO and PGO build - support when available. - -- Issue #27917: Set platform triplets for Android builds. - -- Issue #25825: Update references to the $(LIBPL) installation path on AIX. - This path was changed in 3.2a4. - -- Update OS X installer to use SQLite 3.14.1 and XZ 5.2.2. - -- Issue #21122: Fix LTO builds on OS X. - -- Issue #17128: Build OS X installer with a private copy of OpenSSL. - Also provide a sample Install Certificates command script to install a - set of root certificates from the third-party certifi module. - -Tools/Demos ------------ - -- Issue #27952: Get Tools/scripts/fixcid.py working with Python 3 and the - current "re" module, avoid invalid Python backslash escapes, and fix a bug - parsing escaped C quote signs. - -Windows -------- - -- Issue #28065: Update xz dependency to 5.2.2 and build it from source. - -- Issue #25144: Ensures TargetDir is set before continuing with custom - install. - -- Issue #1602: Windows console doesn't input or print Unicode (PEP 528) - -- Issue #27781: Change file system encoding on Windows to UTF-8 (PEP 529) - -- Issue #27731: Opt-out of MAX_PATH on Windows 10 - -- Issue #6135: Adds encoding and errors parameters to subprocess. - -- Issue #27959: Adds oem encoding, alias ansi to mbcs, move aliasmbcs to - codec lookup. - -- Issue #27982: The functions of the winsound module now accept keyword - arguments. - -- Issue #20366: Build full text search support into SQLite on Windows. - -- Issue #27756: Adds new icons for Python files and processes on Windows. - Designs by Cherry Wang. - -- Issue #27883: Update sqlite to 3.14.1.0 on Windows. - - -What's New in Python 3.6.0 alpha 4? -=================================== - -*Release date: 2016-08-15* - -Core and Builtins ------------------ - -- Issue #27704: Optimized creating bytes and bytearray from byte-like objects - and iterables. Speed up to 3 times for short objects. Original patch by - Naoki Inada. - -- Issue #26823: Large sections of repeated lines in tracebacks are now - abbreviated as "[Previous line repeated {count} more times]" by the builtin - traceback rendering. Patch by Emanuel Barry. - -- Issue #27574: Decreased an overhead of parsing keyword arguments in functions - implemented with using Argument Clinic. - -- Issue #22557: Now importing already imported modules is up to 2.5 times - faster. - -- Issue #17596: Include <wincrypt.h> to help with Min GW building. - -- Issue #17599: On Windows, rename the privately defined REPARSE_DATA_BUFFER - structure to avoid conflicting with the definition from Min GW. - -- Issue #27507: Add integer overflow check in bytearray.extend(). Patch by - Xiang Zhang. - -- Issue #27581: Don't rely on wrapping for overflow check in - PySequence_Tuple(). Patch by Xiang Zhang. - -- Issue #1621: Avoid signed integer overflow in list and tuple operations. - Patch by Xiang Zhang. - -- Issue #27419: Standard __import__() no longer look up "__import__" in globals - or builtins for importing submodules or "from import". Fixed a crash if - raise a warning about unabling to resolve package from __spec__ or - __package__. - -- Issue #27083: Respect the PYTHONCASEOK environment variable under Windows. - -- Issue #27514: Make having too many statically nested blocks a SyntaxError - instead of SystemError. - -- Issue #27366: Implemented PEP 487 (Simpler customization of class creation). - Upon subclassing, the __init_subclass__ classmethod is called on the base - class. Descriptors are initialized with __set_name__ after class creation. - -Library -------- - -- Issue #26027, #27524: Add PEP 519/__fspath__() support to the os and os.path - modules. Includes code from Jelle Zijlstra. - -- Issue #27598: Add Collections to collections.abc. - Patch by Ivan Levkivskyi, docs by Neil Girdhar. - -- Issue #25958: Support "anti-registration" of special methods from - various ABCs, like __hash__, __iter__ or __len__. All these (and - several more) can be set to None in an implementation class and the - behavior will be as if the method is not defined at all. - (Previously, this mechanism existed only for __hash__, to make - mutable classes unhashable.) Code contributed by Andrew Barnert and - Ivan Levkivskyi. - -- Issue #16764: Support keyword arguments to zlib.decompress(). Patch by - Xiang Zhang. - -- Issue #27736: Prevent segfault after interpreter re-initialization due - to ref count problem introduced in code for Issue #27038 in 3.6.0a3. - Patch by Xiang Zhang. - -- Issue #25628: The *verbose* and *rename* parameters for - collections.namedtuple are now keyword-only. - -- Issue #12345: Add mathematical constant tau to math and cmath. See also - PEP 628. - -- Issue #26823: traceback.StackSummary.format now abbreviates large sections of - repeated lines as "[Previous line repeated {count} more times]" (this change - then further affects other traceback display operations in the module). Patch - by Emanuel Barry. - -- Issue #27664: Add to concurrent.futures.thread.ThreadPoolExecutor() - the ability to specify a thread name prefix. - -- Issue #27181: Add geometric_mean and harmonic_mean to statistics module. - -- Issue #27573: code.interact now prints an message when exiting. - -- Issue #6422: Add autorange method to timeit.Timer objects. - -- Issue #27773: Correct some memory management errors server_hostname in - _ssl.wrap_socket(). - -- Issue #26750: unittest.mock.create_autospec() now works properly for - subclasses of property() and other data descriptors. Removes the never - publicly used, never documented unittest.mock.DescriptorTypes tuple. - -- Issue #26754: Undocumented support of general bytes-like objects - as path in compile() and similar functions is now deprecated. - -- Issue #26800: Undocumented support of general bytes-like objects - as paths in os functions is now deprecated. - -- Issue #26981: Add _order_ compatibility shim to enum.Enum for - Python 2/3 code bases. - -- Issue #27661: Added tzinfo keyword argument to datetime.combine. - -- In the curses module, raise an error if window.getstr() or window.instr() is - passed a negative value. - -- Issue #27783: Fix possible usage of uninitialized memory in - operator.methodcaller. - -- Issue #27774: Fix possible Py_DECREF on unowned object in _sre. - -- Issue #27760: Fix possible integer overflow in binascii.b2a_qp. - -- Issue #27758: Fix possible integer overflow in the _csv module for large - record lengths. - -- Issue #27568: Prevent HTTPoxy attack (CVE-2016-1000110). Ignore the - HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates - that the script is in CGI mode. - -- Issue #7063: Remove dead code from the "array" module's slice handling. - Patch by Chuck. - -- Issue #27656: Do not assume sched.h defines any SCHED_* constants. - -- Issue #27130: In the "zlib" module, fix handling of large buffers - (typically 4 GiB) when compressing and decompressing. Previously, inputs - were limited to 4 GiB, and compression and decompression operations did not - properly handle results of 4 GiB. - -- Issue #24773: Implemented PEP 495 (Local Time Disambiguation). - -- Expose the EPOLLEXCLUSIVE constant (when it is defined) in the select module. - -- Issue #27567: Expose the EPOLLRDHUP and POLLRDHUP constants in the select - module. - -- Issue #1621: Avoid signed int negation overflow in the "audioop" module. - -- Issue #27533: Release GIL in nt._isdir - -- Issue #17711: Fixed unpickling by the persistent ID with protocol 0. - Original patch by Alexandre Vassalotti. - -- Issue #27522: Avoid an unintentional reference cycle in email.feedparser. - -- Issue #27512: Fix a segfault when os.fspath() called an __fspath__() method - that raised an exception. Patch by Xiang Zhang. - -IDLE ----- - -- Issue #27714: text_textview and test_autocomplete now pass when re-run - in the same process. This occurs when test_idle fails when run with the - -w option but without -jn. Fix warning from test_config. - -- Issue #27621: Put query response validation error messages in the query - box itself instead of in a separate massagebox. Redo tests to match. - Add Mac OSX refinements. Original patch by Mark Roseman. - -- Issue #27620: Escape key now closes Query box as cancelled. - -- Issue #27609: IDLE: tab after initial whitespace should tab, not - autocomplete. This fixes problem with writing docstrings at least - twice indented. - -- Issue #27609: Explicitly return None when there are also non-None - returns. In a few cases, reverse a condition and eliminate a return. - -- Issue #25507: IDLE no longer runs buggy code because of its tkinter imports. - Users must include the same imports required to run directly in Python. - -- Issue #27173: Add 'IDLE Modern Unix' to the built-in key sets. - Make the default key set depend on the platform. - Add tests for the changes to the config module. - -- Issue #27452: add line counter and crc to IDLE configHandler test dump. - -Tests ------ - -- Issue #25805: Skip a test in test_pkgutil as needed that doesn't work when - ``__name__ == __main__``. Patch by SilentGhost. - -- Issue #27472: Add test.support.unix_shell as the path to the default shell. - -- Issue #27369: In test_pyexpat, avoid testing an error message detail that - changed in Expat 2.2.0. - -- Issue #27594: Prevent assertion error when running test_ast with coverage - enabled: ensure code object has a valid first line number. - Patch suggested by Ivan Levkivskyi. - -Windows -------- - -- Issue #27647: Update bundled Tcl/Tk to 8.6.6. - -- Issue #27610: Adds PEP 514 metadata to Windows installer - -- Issue #27469: Adds a shell extension to the launcher so that drag and drop - works correctly. - -- Issue #27309: Enables proper Windows styles in python[w].exe manifest. - -Build ------ - -- Issue #27713: Suppress spurious build warnings when updating importlib's - bootstrap files. Patch by Xiang Zhang - -- Issue #25825: Correct the references to Modules/python.exp, which is - required on AIX. The references were accidentally changed in 3.5.0a1. - -- Issue #27453: CPP invocation in configure must use CPPFLAGS. Patch by - Chi Hsuan Yen. - -- Issue #27641: The configure script now inserts comments into the makefile - to prevent the pgen and _freeze_importlib executables from being cross- - compiled. - -- Issue #26662: Set PYTHON_FOR_GEN in configure as the Python program to be - used for file generation during the build. - -- Issue #10910: Avoid C++ compilation errors on FreeBSD and OS X. - Also update FreedBSD version checks for the original ctype UTF-8 workaround. - - -What's New in Python 3.6.0 alpha 3? -=================================== - -*Release date: 2016-07-11* - -Core and Builtins ------------------ - -- Issue #27473: Fixed possible integer overflow in bytes and bytearray - concatenations. Patch by Xiang Zhang. - -- Issue #23034: The output of a special Python build with defined COUNT_ALLOCS, - SHOW_ALLOC_COUNT or SHOW_TRACK_COUNT macros is now off by default. It can - be re-enabled using the "-X showalloccount" option. It now outputs to stderr - instead of stdout. - -- Issue #27443: __length_hint__() of bytearray iterators no longer return a - negative integer for a resized bytearray. - -- Issue #27007: The fromhex() class methods of bytes and bytearray subclasses - now return an instance of corresponding subclass. - -Library -------- - -- Issue #26844: Fix error message for imp.find_module() to refer to 'path' - instead of 'name'. Patch by Lev Maximov. - -- Issue #23804: Fix SSL zero-length recv() calls to not block and not raise - an error about unclean EOF. - -- Issue #27466: Change time format returned by http.cookie.time2netscape, - confirming the netscape cookie format and making it consistent with - documentation. - -- Issue #21708: Deprecated dbm.dumb behavior that differs from common dbm - behavior: creating a database in 'r' and 'w' modes and modifying a database - in 'r' mode. - -- Issue #26721: Change the socketserver.StreamRequestHandler.wfile attribute - to implement BufferedIOBase. In particular, the write() method no longer - does partial writes. - -- Issue #22115: Added methods trace_add, trace_remove and trace_info in the - tkinter.Variable class. They replace old methods trace_variable, trace, - trace_vdelete and trace_vinfo that use obsolete Tcl commands and might - not work in future versions of Tcl. Fixed old tracing methods: - trace_vdelete() with wrong mode no longer break tracing, trace_vinfo() now - always returns a list of pairs of strings, tracing in the "u" mode now works. - -- Issue #26243: Only the level argument to zlib.compress() is keyword argument - now. The first argument is positional-only. - -- Issue #27038: Expose the DirEntry type as os.DirEntry. Code patch by - Jelle Zijlstra. - -- Issue #27186: Update os.fspath()/PyOS_FSPath() to check the return value of - __fspath__() to be either str or bytes. - -- Issue #18726: All optional parameters of the dump(), dumps(), - load() and loads() functions and JSONEncoder and JSONDecoder class - constructors in the json module are now keyword-only. - -- Issue #27319: Methods selection_set(), selection_add(), selection_remove() - and selection_toggle() of ttk.TreeView now allow passing multiple items as - multiple arguments instead of passing them as a tuple. Deprecated - undocumented ability of calling the selection() method with arguments. - -- Issue #27079: Fixed curses.ascii functions isblank(), iscntrl() and ispunct(). - -- Issue #27294: Numerical state in the repr for Tkinter event objects is now - represented as a combination of known flags. - -- Issue #27177: Match objects in the re module now support index-like objects - as group indices. Based on patches by Jeroen Demeyer and Xiang Zhang. - -- Issue #26754: Some functions (compile() etc) accepted a filename argument - encoded as an iterable of integers. Now only strings and byte-like objects - are accepted. - -- Issue #26536: socket.ioctl now supports SIO_LOOPBACK_FAST_PATH. Patch by - Daniel Stokes. - -- Issue #27048: Prevents distutils failing on Windows when environment - variables contain non-ASCII characters - -- Issue #27330: Fixed possible leaks in the ctypes module. - -- Issue #27238: Got rid of bare excepts in the turtle module. Original patch - by Jelle Zijlstra. - -- Issue #27122: When an exception is raised within the context being managed - by a contextlib.ExitStack() and one of the exit stack generators - catches and raises it in a chain, do not re-raise the original exception - when exiting, let the new chained one through. This avoids the PEP 479 - bug described in issue25782. - -- [Security] Issue #27278: Fix os.urandom() implementation using getrandom() on - Linux. Truncate size to INT_MAX and loop until we collected enough random - bytes, instead of casting a directly Py_ssize_t to int. - -- Issue #16864: sqlite3.Cursor.lastrowid now supports REPLACE statement. - Initial patch by Alex LordThorsen. - -- Issue #26386: Fixed ttk.TreeView selection operations with item id's - containing spaces. - -- Issue #8637: Honor a pager set by the env var MANPAGER (in preference to - one set by the env var PAGER). - -- [Security] Issue #22636: Avoid shell injection problems with - ctypes.util.find_library(). - -- Issue #16182: Fix various functions in the "readline" module to use the - locale encoding, and fix get_begidx() and get_endidx() to return code point - indexes. - -- Issue #27392: Add loop.connect_accepted_socket(). - Patch by Jim Fulton. - -IDLE ----- - -- Issue #27477: IDLE search dialogs now use ttk widgets. - -- Issue #27173: Add 'IDLE Modern Unix' to the built-in key sets. - Make the default key set depend on the platform. - Add tests for the changes to the config module. - -- Issue #27452: make command line "idle-test> python test_help.py" work. - __file__ is relative when python is started in the file's directory. - -- Issue #27452: add line counter and crc to IDLE configHandler test dump. - -- Issue #27380: IDLE: add query.py with base Query dialog and ttk widgets. - Module had subclasses SectionName, ModuleName, and HelpSource, which are - used to get information from users by configdialog and file =>Load Module. - Each subclass has itw own validity checks. Using ModuleName allows users - to edit bad module names instead of starting over. - Add tests and delete the two files combined into the new one. - -- Issue #27372: Test_idle no longer changes the locale. - -- Issue #27365: Allow non-ascii chars in IDLE NEWS.txt, for contributor names. - -- Issue #27245: IDLE: Cleanly delete custom themes and key bindings. - Previously, when IDLE was started from a console or by import, a cascade - of warnings was emitted. Patch by Serhiy Storchaka. - -- Issue #24137: Run IDLE, test_idle, and htest with tkinter default root - disabled. Fix code and tests that fail with this restriction. Fix htests to - not create a second and redundant root and mainloop. - -- Issue #27310: Fix IDLE.app failure to launch on OS X due to vestigial import. - -C API ------ - -- Issue #26754: PyUnicode_FSDecoder() accepted a filename argument encoded as - an iterable of integers. Now only strings and byte-like objects are accepted. - -Build ------ - -- Issue #28066: Fix the logic that searches build directories for generated - include files when building outside the source tree. - -- Issue #27442: Expose the Android API level that python was built against, in - sysconfig.get_config_vars() as 'ANDROID_API_LEVEL'. - -- Issue #27434: The interpreter that runs the cross-build, found in PATH, must - now be of the same feature version (e.g. 3.6) as the source being built. - -- Issue #26930: Update Windows builds to use OpenSSL 1.0.2h. - -- Issue #23968: Rename the platform directory from plat-$(MACHDEP) to - plat-$(PLATFORM_TRIPLET). - Rename the config directory (LIBPL) from config-$(LDVERSION) to - config-$(LDVERSION)-$(PLATFORM_TRIPLET). - Install the platform specifc _sysconfigdata module into the platform - directory and rename it to include the ABIFLAGS. - -- Don't use largefile support for GNU/Hurd. - -Tools/Demos ------------ - -- Issue #27332: Fixed the type of the first argument of module-level functions - generated by Argument Clinic. Patch by Petr Viktorin. - -- Issue #27418: Fixed Tools/importbench/importbench.py. - -Documentation -------------- - -- Issue #19489: Moved the search box from the sidebar to the header and footer - of each page. Patch by Ammar Askar. - -- Issue #27285: Update documentation to reflect the deprecation of ``pyvenv`` - and normalize on the term "virtual environment". Patch by Steve Piercy. - -Tests ------ - -- Issue #27027: Added test.support.is_android that is True when this is an - Android build. - - -What's New in Python 3.6.0 alpha 2? -=================================== - -*Release date: 2016-06-13* - -Core and Builtins ------------------ - -- Issue #27095: Simplified MAKE_FUNCTION and removed MAKE_CLOSURE opcodes. - Patch by Demur Rumed. - -- Issue #27190: Raise NotSupportedError if sqlite3 is older than 3.3.1. - Patch by Dave Sawyer. - -- Issue #27286: Fixed compiling BUILD_MAP_UNPACK_WITH_CALL opcode. Calling - function with generalized unpacking (PEP 448) and conflicting keyword names - could cause undefined behavior. - -- Issue #27140: Added BUILD_CONST_KEY_MAP opcode. - -- Issue #27186: Add support for os.PathLike objects to open() (part of PEP 519). - -- Issue #27066: Fixed SystemError if a custom opener (for open()) returns a - negative number without setting an exception. - -- Issue #26983: float() now always return an instance of exact float. - The deprecation warning is emitted if __float__ returns an instance of - a strict subclass of float. In a future versions of Python this can - be an error. - -- Issue #27097: Python interpreter is now about 7% faster due to optimized - instruction decoding. Based on patch by Demur Rumed. - -- Issue #26647: Python interpreter now uses 16-bit wordcode instead of bytecode. - Patch by Demur Rumed. - -- Issue #23275: Allow assigning to an empty target list in round brackets: - () = iterable. - -- Issue #27243: Update the __aiter__ protocol: instead of returning - an awaitable that resolves to an asynchronous iterator, the asynchronous - iterator should be returned directly. Doing the former will trigger a - PendingDeprecationWarning. - - -Library -------- - -- Comment out socket (SO_REUSEPORT) and posix (O_SHLOCK, O_EXLOCK) constants - exposed on the API which are not implemented on GNU/Hurd. They would not - work at runtime anyway. - -- Issue #27025: Generated names for Tkinter widgets are now more meanful - and recognizirable. - -- Issue #25455: Fixed crashes in repr of recursive ElementTree.Element and - functools.partial objects. - -- Issue #27294: Improved repr for Tkinter event objects. - -- Issue #20508: Improve exception message of IPv{4,6}Network.__getitem__. - Patch by Gareth Rees. - -- [Security] Issue #26556: Update expat to 2.1.1, fixes CVE-2015-1283. - -- [Security] Fix TLS stripping vulnerability in smtplib, CVE-2016-0772. - Reported by Team Oststrom. - -- Issue #21386: Implement missing IPv4Address.is_global property. It was - documented since 07a5610bae9d. Initial patch by Roger Luethi. - -- Issue #27029: Removed deprecated support of universal newlines mode from - ZipFile.open(). - -- Issue #27030: Unknown escapes consisting of ``'\'`` and an ASCII letter in - regular expressions now are errors. The re.LOCALE flag now can be used - only with bytes patterns. - -- Issue #27186: Add os.PathLike support to DirEntry (part of PEP 519). - Initial patch by Jelle Zijlstra. - -- Issue #20900: distutils register command now decodes HTTP responses - correctly. Initial patch by ingrid. - -- Issue #27186: Add os.PathLike support to pathlib, removing its provisional - status (part of PEP 519). Initial patch by Dusty Phillips. - -- Issue #27186: Add support for os.PathLike objects to os.fsencode() and - os.fsdecode() (part of PEP 519). - -- Issue #27186: Introduce os.PathLike and os.fspath() (part of PEP 519). - -- A new version of typing.py provides several new classes and - features: @overload outside stubs, Reversible, DefaultDict, Text, - ContextManager, Type[], NewType(), TYPE_CHECKING, and numerous bug - fixes (note that some of the new features are not yet implemented in - mypy or other static analyzers). Also classes for PEP 492 - (Awaitable, AsyncIterable, AsyncIterator) have been added (in fact - they made it into 3.5.1 but were never mentioned). - -- Issue #25738: Stop http.server.BaseHTTPRequestHandler.send_error() from - sending a message body for 205 Reset Content. Also, don't send Content - header fields in responses that don't have a body. Patch by Susumu - Koshiba. - -- Issue #21313: Fix the "platform" module to tolerate when sys.version - contains truncated build information. - -- [Security] Issue #26839: On Linux, :func:`os.urandom` now calls - ``getrandom()`` with ``GRND_NONBLOCK`` to fall back on reading - ``/dev/urandom`` if the urandom entropy pool is not initialized yet. Patch - written by Colm Buckley. - -- Issue #23883: Added missing APIs to __all__ to match the documented APIs - for the following modules: cgi, mailbox, mimetypes, plistlib and smtpd. - Patches by Jacek Kołodziej. - -- Issue #27164: In the zlib module, allow decompressing raw Deflate streams - with a predefined zdict. Based on patch by Xiang Zhang. - -- Issue #24291: Fix wsgiref.simple_server.WSGIRequestHandler to completely - write data to the client. Previously it could do partial writes and - truncate data. Also, wsgiref.handler.ServerHandler can now handle stdout - doing partial writes, but this is deprecated. - -- Issue #21272: Use _sysconfigdata.py to initialize distutils.sysconfig. - -- Issue #19611: :mod:`inspect` now reports the implicit ``.0`` parameters - generated by the compiler for comprehension and generator expression scopes - as if they were positional-only parameters called ``implicit0``. - Patch by Jelle Zijlstra. - -- Issue #26809: Add ``__all__`` to :mod:`string`. Patch by Emanuel Barry. - -- Issue #26373: subprocess.Popen.communicate now correctly ignores - BrokenPipeError when the child process dies before .communicate() - is called in more/all circumstances. - -- signal, socket, and ssl module IntEnum constant name lookups now return a - consistent name for values having multiple names. Ex: signal.Signals(6) - now refers to itself as signal.SIGALRM rather than flipping between that - and signal.SIGIOT based on the interpreter's hash randomization seed. - -- Issue #27167: Clarify the subprocess.CalledProcessError error message text - when the child process died due to a signal. - -- Issue #25931: Don't define socketserver.Forking* names on platforms such - as Windows that do not support os.fork(). - -- Issue #21776: distutils.upload now correctly handles HTTPError. - Initial patch by Claudiu Popa. - -- Issue #26526: Replace custom parse tree validation in the parser - module with a simple DFA validator. - -- Issue #27114: Fix SSLContext._load_windows_store_certs fails with - PermissionError - -- Issue #18383: Avoid creating duplicate filters when using filterwarnings - and simplefilter. Based on patch by Alex Shkop. - -- Issue #23026: winreg.QueryValueEx() now return an integer for REG_QWORD type. - -- Issue #26741: subprocess.Popen destructor now emits a ResourceWarning warning - if the child process is still running. - -- Issue #27056: Optimize pickle.load() and pickle.loads(), up to 10% faster - to deserialize a lot of small objects. - -- Issue #21271: New keyword only parameters in reset_mock call. - -IDLE ----- - -- Issue #5124: Paste with text selected now replaces the selection on X11. - This matches how paste works on Windows, Mac, most modern Linux apps, - and ttk widgets. Original patch by Serhiy Storchaka. - -- Issue #24750: Switch all scrollbars in IDLE to ttk versions. - Where needed, minimal tests are added to cover changes. - -- Issue #24759: IDLE requires tk 8.5 and availability ttk widgets. - Delete now unneeded tk version tests and code for older versions. - Add test for IDLE syntax colorizoer. - -- Issue #27239: idlelib.macosx.isXyzTk functions initialize as needed. - -- Issue #27262: move Aqua unbinding code, which enable context menus, to maxosx. - -- Issue #24759: Make clear in idlelib.idle_test.__init__ that the directory - is a private implementation of test.test_idle and tool for maintainers. - -- Issue #27196: Stop 'ThemeChanged' warnings when running IDLE tests. - These persisted after other warnings were suppressed in #20567. - Apply Serhiy Storchaka's update_idletasks solution to four test files. - Record this additional advice in idle_test/README.txt - -- Issue #20567: Revise idle_test/README.txt with advice about avoiding - tk warning messages from tests. Apply advice to several IDLE tests. - -- Issue #24225: Update idlelib/README.txt with new file names - and event handlers. - -- Issue #27156: Remove obsolete code not used by IDLE. Replacements: - 1. help.txt, replaced by help.html, is out-of-date and should not be used. - Its dedicated viewer has be replaced by the html viewer in help.py. - 2. ``import idlever; I = idlever.IDLE_VERSION`` is the same as - ``import sys; I = version[:version.index(' ')]`` - 3. After ``ob = stackviewer.VariablesTreeItem(*args)``, - ``ob.keys() == list(ob.object.keys)``. - 4. In macosc, runningAsOSXAPP == isAquaTk; idCarbonAquaTk == isCarbonTk - -- Issue #27117: Make colorizer htest and turtledemo work with dark themes. - Move code for configuring text widget colors to a new function. - -- Issue #24225: Rename many `idlelib/*.py` and `idle_test/test_*.py` files. - Edit files to replace old names with new names when the old name - referred to the module rather than the class it contained. - See the issue and IDLE section in What's New in 3.6 for more. - -- Issue #26673: When tk reports font size as 0, change to size 10. - Such fonts on Linux prevented the configuration dialog from opening. - -- Issue #21939: Add test for IDLE's percolator. - Original patch by Saimadhav Heblikar. - -- Issue #21676: Add test for IDLE's replace dialog. - Original patch by Saimadhav Heblikar. - -- Issue #18410: Add test for IDLE's search dialog. - Original patch by Westley Martínez. - -- Issue #21703: Add test for undo delegator. Patch mostly by - Saimadhav Heblikar . - -- Issue #27044: Add ConfigDialog.remove_var_callbacks to stop memory leaks. - -- Issue #23977: Add more asserts to test_delegator. - -Documentation -------------- - -- Issue #16484: Change the default PYTHONDOCS URL to "https:", and fix the - resulting links to use lowercase. Patch by Sean Rodman, test by Kaushik - Nadikuditi. - -- Issue #24136: Document the new PEP 448 unpacking syntax of 3.5. - -- Issue #22558: Add remaining doc links to source code for Python-coded modules. - Patch by Yoni Lavi. - -Tests ------ - -- Issue #25285: regrtest now uses subprocesses when the -j1 command line option - is used: each test file runs in a fresh child process. Before, the -j1 option - was ignored. - -- Issue #25285: Tools/buildbot/test.bat script now uses -j1 by default to run - each test file in fresh child process. - -Windows -------- - -- Issue #27064: The py.exe launcher now defaults to Python 3. - The Windows launcher ``py.exe`` no longer prefers an installed - Python 2 version over Python 3 by default when used interactively. - -Build ------ - -- Issue #27229: Fix the cross-compiling pgen rule for in-tree builds. Patch - by Xavier de Gaye. - -- Issue #26930: Update OS X 10.5+ 32-bit-only installer to build - and link with OpenSSL 1.0.2h. - -Misc ----- - -- Issue #17500, and https://github.com/python/pythondotorg/issues/945: Remove - unused and outdated icons. - -C API ------ - -- Issue #27186: Add the PyOS_FSPath() function (part of PEP 519). - -- Issue #26282: PyArg_ParseTupleAndKeywords() now supports positional-only - parameters. - -Tools/Demos ------------ - -- Issue #26282: Argument Clinic now supports positional-only and keyword - parameters in the same function. - - -What's New in Python 3.6.0 alpha 1? -=================================== - -Release date: 2016-05-16 - -Core and Builtins ------------------ - -- Issue #20041: Fixed TypeError when frame.f_trace is set to None. - Patch by Xavier de Gaye. - -- Issue #26168: Fixed possible refleaks in failing Py_BuildValue() with the "N" - format unit. - -- Issue #26991: Fix possible refleak when creating a function with annotations. - -- Issue #27039: Fixed bytearray.remove() for values greater than 127. Based on - patch by Joe Jevnik. - -- Issue #23640: int.from_bytes() no longer bypasses constructors for subclasses. - -- Issue #27005: Optimized the float.fromhex() class method for exact float. - It is now 2 times faster. - -- Issue #18531: Single var-keyword argument of dict subtype was passed - unscathed to the C-defined function. Now it is converted to exact dict. - -- Issue #26811: gc.get_objects() no longer contains a broken tuple with NULL - pointer. - -- Issue #20120: Use RawConfigParser for .pypirc parsing, - removing support for interpolation unintentionally added - with move to Python 3. Behavior no longer does any - interpolation in .pypirc files, matching behavior in Python - 2.7 and Setuptools 19.0. - -- Issue #26249: Memory functions of the :c:func:`PyMem_Malloc` domain - (:c:data:`PYMEM_DOMAIN_MEM`) now use the :ref:`pymalloc allocator <pymalloc>` - rather than system :c:func:`malloc`. Applications calling - :c:func:`PyMem_Malloc` without holding the GIL can now crash: use - ``PYTHONMALLOC=debug`` environment variable to validate the usage of memory - allocators in your application. - -- Issue #26802: Optimize function calls only using unpacking like - ``func(*tuple)`` (no other positional argument, no keyword): avoid copying - the tuple. Patch written by Joe Jevnik. - -- Issue #26659: Make the builtin slice type support cycle collection. - -- Issue #26718: super.__init__ no longer leaks memory if called multiple times. - NOTE: A direct call of super.__init__ is not endorsed! - -- Issue #27138: Fix the doc comment for FileFinder.find_spec(). - -- Issue #27147: Mention PEP 420 in the importlib docs. - -- Issue #25339: PYTHONIOENCODING now has priority over locale in setting the - error handler for stdin and stdout. - -- Issue #26494: Fixed crash on iterating exhausting iterators. - Affected classes are generic sequence iterators, iterators of str, bytes, - bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding - views and os.scandir() iterator. - -- Issue #26574: Optimize ``bytes.replace(b'', b'.')`` and - ``bytearray.replace(b'', b'.')``. Patch written by Josh Snider. - -- Issue #26581: If coding cookie is specified multiple times on a line in - Python source code file, only the first one is taken to account. - -- Issue #19711: Add tests for reloading namespace packages. - -- Issue #21099: Switch applicable importlib tests to use PEP 451 API. - -- Issue #26563: Debug hooks on Python memory allocators now raise a fatal - error if functions of the :c:func:`PyMem_Malloc` family are called without - holding the GIL. - -- Issue #26564: On error, the debug hooks on Python memory allocators now use - the :mod:`tracemalloc` module to get the traceback where a memory block was - allocated. - -- Issue #26558: The debug hooks on Python memory allocator - :c:func:`PyObject_Malloc` now detect when functions are called without - holding the GIL. - -- Issue #26516: Add :envvar:`PYTHONMALLOC` environment variable to set the - Python memory allocators and/or install debug hooks. - -- Issue #26516: The :c:func:`PyMem_SetupDebugHooks` function can now also be - used on Python compiled in release mode. - -- Issue #26516: The :envvar:`PYTHONMALLOCSTATS` environment variable can now - also be used on Python compiled in release mode. It now has no effect if - set to an empty string. - -- Issue #26516: In debug mode, debug hooks are now also installed on Python - memory allocators when Python is configured without pymalloc. - -- Issue #26464: Fix str.translate() when string is ASCII and first replacements - removes character, but next replacement uses a non-ASCII character or a - string longer than 1 character. Regression introduced in Python 3.5.0. - -- Issue #22836: Ensure exception reports from PyErr_Display() and - PyErr_WriteUnraisable() are sensible even when formatting them produces - secondary errors. This affects the reports produced by - sys.__excepthook__() and when __del__() raises an exception. - -- Issue #26302: Correct behavior to reject comma as a legal character for - cookie names. - -- Issue #26136: Upgrade the warning when a generator raises StopIteration - from PendingDeprecationWarning to DeprecationWarning. Patch by Anish - Shah. - -- Issue #26204: The compiler now ignores all constant statements: bytes, str, - int, float, complex, name constants (None, False, True), Ellipsis - and ast.Constant; not only str and int. For example, ``1.0`` is now ignored - in ``def f(): 1.0``. - -- Issue #4806: Avoid masking the original TypeError exception when using star - (``*``) unpacking in function calls. Based on patch by Hagen Fürstenau and - Daniel Urban. - -- Issue #26146: Add a new kind of AST node: ``ast.Constant``. It can be used - by external AST optimizers, but the compiler does not emit directly such - node. - -- Issue #23601: Sped-up allocation of dict key objects by using Python's - small object allocator. (Contributed by Julian Taylor.) - -- Issue #18018: Import raises ImportError instead of SystemError if a relative - import is attempted without a known parent package. - -- Issue #25843: When compiling code, don't merge constants if they are equal - but have a different types. For example, ``f1, f2 = lambda: 1, lambda: 1.0`` - is now correctly compiled to two different functions: ``f1()`` returns ``1`` - (``int``) and ``f2()`` returns ``1.0`` (``float``), even if ``1`` and ``1.0`` - are equal. - -- Issue #26107: The format of the ``co_lnotab`` attribute of code objects - changes to support negative line number delta. - -- Issue #26154: Add a new private _PyThreadState_UncheckedGet() function to get - the current Python thread state, but don't issue a fatal error if it is NULL. - This new function must be used instead of accessing directly the - _PyThreadState_Current variable. The variable is no more exposed since - Python 3.5.1 to hide the exact implementation of atomic C types, to avoid - compiler issues. - -- Issue #25791: If __package__ != __spec__.parent or if neither __package__ or - __spec__ are defined then ImportWarning is raised. - -- Issue #22995: [UPDATE] Comment out the one of the pickleability tests in - _PyObject_GetState() due to regressions observed in Cython-based projects. - -- Issue #25961: Disallowed null characters in the type name. - -- Issue #25973: Fix segfault when an invalid nonlocal statement binds a name - starting with two underscores. - -- Issue #22995: Instances of extension types with a state that aren't - subclasses of list or dict and haven't implemented any pickle-related - methods (__reduce__, __reduce_ex__, __getnewargs__, __getnewargs_ex__, - or __getstate__), can no longer be pickled. Including memoryview. - -- Issue #20440: Massive replacing unsafe attribute setting code with special - macro Py_SETREF. - -- Issue #25766: Special method __bytes__() now works in str subclasses. - -- Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size. - This allows sys.getsize() to work correctly with their subclasses with - __slots__ defined. - -- Issue #25709: Fixed problem with in-place string concatenation and utf-8 - cache. - -- Issue #5319: New Py_FinalizeEx() API allowing Python to set an exit status - of 120 on failure to flush buffered streams. - -- Issue #25485: telnetlib.Telnet is now a context manager. - -- Issue #24097: Fixed crash in object.__reduce__() if slot name is freed inside - __getattr__. - -- Issue #24731: Fixed crash on converting objects with special methods - __bytes__, __trunc__, and __float__ returning instances of subclasses of - bytes, int, and float to subclasses of bytes, int, and float correspondingly. - -- Issue #25630: Fix a possible segfault during argument parsing in functions - that accept filesystem paths. - -- Issue #23564: Fixed a partially broken sanity check in the _posixsubprocess - internals regarding how fds_to_pass were passed to the child. The bug had - no actual impact as subprocess.py already avoided it. - -- Issue #25388: Fixed tokenizer crash when processing undecodable source code - with a null byte. - -- Issue #25462: The hash of the key now is calculated only once in most - operations in C implementation of OrderedDict. - -- Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now - rejects builtin types with not defined __new__. - -- Issue #24802: Avoid buffer overreads when int(), float(), compile(), exec() - and eval() are passed bytes-like objects. These objects are not - necessarily terminated by a null byte, but the functions assumed they were. - -- Issue #25555: Fix parser and AST: fill lineno and col_offset of "arg" node - when compiling AST from Python objects. - -- Issue #24726: Fixed a crash and leaking NULL in repr() of OrderedDict that - was mutated by direct calls of dict methods. - -- Issue #25449: Iterating OrderedDict with keys with unstable hash now raises - KeyError in C implementations as well as in Python implementation. - -- Issue #25395: Fixed crash when highly nested OrderedDict structures were - garbage collected. - -- Issue #25401: Optimize bytes.fromhex() and bytearray.fromhex(): they are now - between 2x and 3.5x faster. - -- Issue #25399: Optimize bytearray % args using the new private _PyBytesWriter - API. Formatting is now between 2.5 and 5 times faster. - -- Issue #25274: sys.setrecursionlimit() now raises a RecursionError if the new - recursion limit is too low depending at the current recursion depth. Modify - also the "lower-water mark" formula to make it monotonic. This mark is used - to decide when the overflowed flag of the thread state is reset. - -- Issue #24402: Fix input() to prompt to the redirected stdout when - sys.stdout.fileno() fails. - -- Issue #25349: Optimize bytes % args using the new private _PyBytesWriter API. - Formatting is now up to 2 times faster. - -- Issue #24806: Prevent builtin types that are not allowed to be subclassed from - being subclassed through multiple inheritance. - -- Issue #25301: The UTF-8 decoder is now up to 15 times as fast for error - handlers: ``ignore``, ``replace`` and ``surrogateescape``. - -- Issue #24848: Fixed a number of bugs in UTF-7 decoding of misformed data. - -- Issue #25267: The UTF-8 encoder is now up to 75 times as fast for error - handlers: ``ignore``, ``replace``, ``surrogateescape``, ``surrogatepass``. - Patch co-written with Serhiy Storchaka. - -- Issue #25280: Import trace messages emitted in verbose (-v) mode are no - longer formatted twice. - -- Issue #25227: Optimize ASCII and latin1 encoders with the ``surrogateescape`` - error handler: the encoders are now up to 3 times as fast. Initial patch - written by Serhiy Storchaka. - -- Issue #25003: On Solaris 11.3 or newer, os.urandom() now uses the - getrandom() function instead of the getentropy() function. The getentropy() - function is blocking to generate very good quality entropy, os.urandom() - doesn't need such high-quality entropy. - -- Issue #9232: Modify Python's grammar to allow trailing commas in the - argument list of a function declaration. For example, "def f(\*, a = - 3,): pass" is now legal. Patch from Mark Dickinson. - -- Issue #24965: Implement PEP 498 "Literal String Interpolation". This - allows you to embed expressions inside f-strings, which are - converted to normal strings at run time. Given x=3, then - f'value={x}' == 'value=3'. Patch by Eric V. Smith. - -- Issue #26478: Fix semantic bugs when using binary operators with dictionary - views and tuples. - -- Issue #26171: Fix possible integer overflow and heap corruption in - zipimporter.get_data(). - -- Issue #25660: Fix TAB key behaviour in REPL with readline. - -- Issue #26288: Optimize PyLong_AsDouble. - -- Issues #26289 and #26315: Optimize floor and modulo division for - single-digit longs. Microbenchmarks show 2-2.5x improvement. Built-in - 'divmod' function is now also ~10% faster. - -- Issue #25887: Raise a RuntimeError when a coroutine object is awaited - more than once. - -Library -------- - -- Issue #27057: Fix os.set_inheritable() on Android, ioctl() is blocked by - SELinux and fails with EACCESS. The function now falls back to fcntl(). - Patch written by Michał Bednarski. - -- Issue #27014: Fix infinite recursion using typing.py. Thanks to Kalle Tuure! - -- Issue #27031: Removed dummy methods in Tkinter widget classes: tk_menuBar() - and tk_bindForTraversal(). - -- Issue #14132: Fix urllib.request redirect handling when the target only has - a query string. Original fix by Ján Janech. - -- Issue #17214: The "urllib.request" module now percent-encodes non-ASCII - bytes found in redirect target URLs. Some servers send Location header - fields with non-ASCII bytes, but "http.client" requires the request target - to be ASCII-encodable, otherwise a UnicodeEncodeError is raised. Based on - patch by Christian Heimes. - -- Issue #27033: The default value of the decode_data parameter for - smtpd.SMTPChannel and smtpd.SMTPServer constructors is changed to False. - -- Issue #27034: Removed deprecated class asynchat.fifo. - -- Issue #26870: Added readline.set_auto_history(), which can stop entries - being automatically added to the history list. Based on patch by Tyler - Crompton. - -- Issue #26039: zipfile.ZipFile.open() can now be used to write data into a ZIP - file, as well as for extracting data. Patch by Thomas Kluyver. - -- Issue #26892: Honor debuglevel flag in urllib.request.HTTPHandler. Patch - contributed by Chi Hsuan Yen. - -- Issue #22274: In the subprocess module, allow stderr to be redirected to - stdout even when stdout is not redirected. Patch by Akira Li. - -- Issue #26807: mock_open 'files' no longer error on readline at end of file. - Patch from Yolanda Robla. - -- Issue #25745: Fixed leaking a userptr in curses panel destructor. - -- Issue #26977: Removed unnecessary, and ignored, call to sum of squares helper - in statistics.pvariance. - -- Issue #26002: Use bisect in statistics.median instead of a linear search. - Patch by Upendra Kuma. - -- Issue #25974: Make use of new Decimal.as_integer_ratio() method in statistics - module. Patch by Stefan Krah. - -- Issue #26996: Add secrets module as described in PEP 506. - -- Issue #26881: The modulefinder module now supports extended opcode arguments. - -- Issue #23815: Fixed crashes related to directly created instances of types in - _tkinter and curses.panel modules. - -- Issue #17765: weakref.ref() no longer silently ignores keyword arguments. - Patch by Georg Brandl. - -- Issue #26873: xmlrpc now raises ResponseError on unsupported type tags - instead of silently return incorrect result. - -- Issue #26915: The __contains__ methods in the collections ABCs now check - for identity before checking equality. This better matches the behavior - of the concrete classes, allows sensible handling of NaNs, and makes it - easier to reason about container invariants. - -- Issue #26711: Fixed the comparison of plistlib.Data with other types. - -- Issue #24114: Fix an uninitialized variable in `ctypes.util`. - - The bug only occurs on SunOS when the ctypes implementation searches - for the `crle` program. Patch by Xiang Zhang. Tested on SunOS by - Kees Bos. - -- Issue #26864: In urllib.request, change the proxy bypass host checking - against no_proxy to be case-insensitive, and to not match unrelated host - names that happen to have a bypassed hostname as a suffix. Patch by Xiang - Zhang. - -- Issue #24902: Print server URL on http.server startup. Initial patch by - Felix Kaiser. - -- Issue #25788: fileinput.hook_encoded() now supports an "errors" argument - for passing to open. Original patch by Joseph Hackman. - -- Issue #26634: recursive_repr() now sets __qualname__ of wrapper. Patch by - Xiang Zhang. - -- Issue #26804: urllib.request will prefer lower_case proxy environment - variables over UPPER_CASE or Mixed_Case ones. Patch contributed by Hans-Peter - Jansen. - -- Issue #26837: assertSequenceEqual() now correctly outputs non-stringified - differing items (like bytes in the -b mode). This affects assertListEqual() - and assertTupleEqual(). - -- Issue #26041: Remove "will be removed in Python 3.7" from deprecation - messages of platform.dist() and platform.linux_distribution(). - Patch by Kumaripaba Miyurusara Athukorala. - -- Issue #26822: itemgetter, attrgetter and methodcaller objects no longer - silently ignore keyword arguments. - -- Issue #26733: Disassembling a class now disassembles class and static methods. - Patch by Xiang Zhang. - -- Issue #26801: Fix error handling in :func:`shutil.get_terminal_size`, catch - :exc:`AttributeError` instead of :exc:`NameError`. Patch written by Emanuel - Barry. - -- Issue #24838: tarfile's ustar and gnu formats now correctly calculate name - and link field limits for multibyte character encodings like utf-8. - -- [Security] Issue #26657: Fix directory traversal vulnerability with - http.server on Windows. This fixes a regression that was introduced in - 3.3.4rc1 and 3.4.0rc1. Based on patch by Philipp Hagemeister. - -- Issue #26717: Stop encoding Latin-1-ized WSGI paths with UTF-8. Patch by - Anthony Sottile. - -- Issue #26782: Add STARTUPINFO to subprocess.__all__ on Windows. - -- Issue #26404: Add context manager to socketserver. Patch by Aviv Palivoda. - -- Issue #26735: Fix :func:`os.urandom` on Solaris 11.3 and newer when reading - more than 1,024 bytes: call ``getrandom()`` multiple times with a limit of - 1024 bytes per call. - -- Issue #26585: Eliminate http.server._quote_html() and use - html.escape(quote=False). Patch by Xiang Zhang. - -- Issue #26685: Raise OSError if closing a socket fails. - -- Issue #16329: Add .webm to mimetypes.types_map. Patch by Giampaolo Rodola'. - -- Issue #13952: Add .csv to mimetypes.types_map. Patch by Geoff Wilson. - -- Issue #26587: the site module now allows .pth files to specify files to be - added to sys.path (e.g. zip files). - -- Issue #25609: Introduce contextlib.AbstractContextManager and - typing.ContextManager. - -- Issue #26709: Fixed Y2038 problem in loading binary PLists. - -- Issue #23735: Handle terminal resizing with Readline 6.3+ by installing our - own SIGWINCH handler. Patch by Eric Price. - -- Issue #25951: Change SSLSocket.sendall() to return None, as explicitly - documented for plain socket objects. Patch by Aviv Palivoda. - -- Issue #26586: In http.server, respond with "413 Request header fields too - large" if there are too many header fields to parse, rather than killing - the connection and raising an unhandled exception. Patch by Xiang Zhang. - -- Issue #26676: Added missing XMLPullParser to ElementTree.__all__. - -- Issue #22854: Change BufferedReader.writable() and - BufferedWriter.readable() to always return False. - -- Issue #26492: Exhausted iterator of array.array now conforms with the behavior - of iterators of other mutable sequences: it lefts exhausted even if iterated - array is extended. - -- Issue #26641: doctest.DocFileTest and doctest.testfile() now support - packages (module splitted into multiple directories) for the package - parameter. - -- Issue #25195: Fix a regression in mock.MagicMock. _Call is a subclass of - tuple (changeset 3603bae63c13 only works for classes) so we need to - implement __ne__ ourselves. Patch by Andrew Plummer. - -- Issue #26644: Raise ValueError rather than SystemError when a negative - length is passed to SSLSocket.recv() or read(). - -- Issue #23804: Fix SSL recv(0) and read(0) methods to return zero bytes - instead of up to 1024. - -- Issue #26616: Fixed a bug in datetime.astimezone() method. - -- Issue #26637: The :mod:`importlib` module now emits an :exc:`ImportError` - rather than a :exc:`TypeError` if :func:`__import__` is tried during the - Python shutdown process but :data:`sys.path` is already cleared (set to - ``None``). - -- Issue #21925: :func:`warnings.formatwarning` now catches exceptions when - calling :func:`linecache.getline` and - :func:`tracemalloc.get_object_traceback` to be able to log - :exc:`ResourceWarning` emitted late during the Python shutdown process. - -- Issue #23848: On Windows, faulthandler.enable() now also installs an - exception handler to dump the traceback of all Python threads on any Windows - exception, not only on UNIX signals (SIGSEGV, SIGFPE, SIGABRT). - -- Issue #26530: Add C functions :c:func:`_PyTraceMalloc_Track` and - :c:func:`_PyTraceMalloc_Untrack` to track memory blocks using the - :mod:`tracemalloc` module. Add :c:func:`_PyTraceMalloc_GetTraceback` to get - the traceback of an object. - -- Issue #26588: The _tracemalloc now supports tracing memory allocations of - multiple address spaces (domains). - -- Issue #24266: Ctrl+C during Readline history search now cancels the search - mode when compiled with Readline 7. - -- Issue #26590: Implement a safe finalizer for the _socket.socket type. It now - releases the GIL to close the socket. - -- Issue #18787: spwd.getspnam() now raises a PermissionError if the user - doesn't have privileges. - -- Issue #26560: Avoid potential ValueError in BaseHandler.start_response. - Initial patch by Peter Inglesby. - -- Issue #26567: Add a new function :c:func:`PyErr_ResourceWarning` function to - pass the destroyed object. Add a *source* attribute to - :class:`warnings.WarningMessage`. Add warnings._showwarnmsg() which uses - tracemalloc to get the traceback where source object was allocated. - -- [Security] Issue #26313: ssl.py _load_windows_store_certs fails if windows - cert store is empty. Patch by Baji. - -- Issue #26569: Fix :func:`pyclbr.readmodule` and :func:`pyclbr.readmodule_ex` - to support importing packages. - -- Issue #26499: Account for remaining Content-Length in - HTTPResponse.readline() and read1(). Based on patch by Silent Ghost. - Also document that HTTPResponse now supports these methods. - -- Issue #25320: Handle sockets in directories unittest discovery is scanning. - Patch from Victor van den Elzen. - -- Issue #16181: cookiejar.http2time() now returns None if year is higher than - datetime.MAXYEAR. - -- Issue #26513: Fixes platform module detection of Windows Server - -- Issue #23718: Fixed parsing time in week 0 before Jan 1. Original patch by - Tamás Bence Gedai. - -- Issue #26323: Add Mock.assert_called() and Mock.assert_called_once() - methods to unittest.mock. Patch written by Amit Saha. - -- Issue #20589: Invoking Path.owner() and Path.group() on Windows now raise - NotImplementedError instead of ImportError. - -- Issue #26177: Fixed the keys() method for Canvas and Scrollbar widgets. - -- Issue #15068: Got rid of excessive buffering in fileinput. - The bufsize parameter is now deprecated and ignored. - -- Issue #19475: Added an optional argument timespec to the datetime - isoformat() method to choose the precision of the time component. - -- Issue #2202: Fix UnboundLocalError in - AbstractDigestAuthHandler.get_algorithm_impls. Initial patch by Mathieu - Dupuy. - -- Issue #26167: Minimized overhead in copy.copy() and copy.deepcopy(). - Optimized copying and deepcopying bytearrays, NotImplemented, slices, - short lists, tuples, dicts, sets. - -- Issue #25718: Fixed pickling and copying the accumulate() iterator with - total is None. - -- Issue #26475: Fixed debugging output for regular expressions with the (?x) - flag. - -- Issue #26482: Allowed pickling recursive dequeues. - -- Issue #26335: Make mmap.write() return the number of bytes written like - other write methods. Patch by Jakub Stasiak. - -- Issue #26457: Fixed the subnets() methods in IP network classes for the case - when resulting prefix length is equal to maximal prefix length. - Based on patch by Xiang Zhang. - -- Issue #26385: Remove the file if the internal open() call in - NamedTemporaryFile() fails. Patch by Silent Ghost. - -- Issue #26402: Fix XML-RPC client to retry when the server shuts down a - persistent connection. This was a regression related to the new - http.client.RemoteDisconnected exception in 3.5.0a4. - -- Issue #25913: Leading ``<~`` is optional now in base64.a85decode() with - adobe=True. Patch by Swati Jaiswal. - -- Issue #26186: Remove an invalid type check in importlib.util.LazyLoader. - -- Issue #26367: importlib.__import__() raises ImportError like - builtins.__import__() when ``level`` is specified but without an accompanying - package specified. - -- Issue #26309: In the "socketserver" module, shut down the request (closing - the connected socket) when verify_request() returns false. Patch by Aviv - Palivoda. - -- Issue #23430: Change the socketserver module to only catch exceptions - raised from a request handler that are derived from Exception (instead of - BaseException). Therefore SystemExit and KeyboardInterrupt no longer - trigger the handle_error() method, and will now to stop a single-threaded - server. - -- [Security] Issue #25939: On Windows open the cert store readonly in - ssl.enum_certificates. - -- Issue #25995: os.walk() no longer uses FDs proportional to the tree depth. - -- Issue #25994: Added the close() method and the support of the context manager - protocol for the os.scandir() iterator. - -- Issue #23992: multiprocessing: make MapResult not fail-fast upon exception. - -- Issue #26243: Support keyword arguments to zlib.compress(). Patch by Aviv - Palivoda. - -- Issue #26117: The os.scandir() iterator now closes file descriptor not only - when the iteration is finished, but when it was failed with error. - -- Issue #25949: __dict__ for an OrderedDict instance is now created only when - needed. - -- Issue #25911: Restored support of bytes paths in os.walk() on Windows. - -- Issue #26045: Add UTF-8 suggestion to error message when posting a - non-Latin-1 string with http.client. - -- Issue #26039: Added zipfile.ZipInfo.from_file() and zipinfo.ZipInfo.is_dir(). - Patch by Thomas Kluyver. - -- Issue #12923: Reset FancyURLopener's redirect counter even if there is an - exception. Based on patches by Brian Brazil and Daniel Rocco. - -- Issue #25945: Fixed a crash when unpickle the functools.partial object with - wrong state. Fixed a leak in failed functools.partial constructor. - "args" and "keywords" attributes of functools.partial have now always types - tuple and dict correspondingly. - -- Issue #26202: copy.deepcopy() now correctly copies range() objects with - non-atomic attributes. - -- Issue #23076: Path.glob() now raises a ValueError if it's called with an - invalid pattern. Patch by Thomas Nyberg. - -- Issue #19883: Fixed possible integer overflows in zipimport. - -- Issue #26227: On Windows, getnameinfo(), gethostbyaddr() and - gethostbyname_ex() functions of the socket module now decode the hostname - from the ANSI code page rather than UTF-8. - -- Issue #26099: The site module now writes an error into stderr if - sitecustomize module can be imported but executing the module raise an - ImportError. Same change for usercustomize. - -- Issue #26147: xmlrpc now works with strings not encodable with used - non-UTF-8 encoding. - -- Issue #25935: Garbage collector now breaks reference loops with OrderedDict. - -- Issue #16620: Fixed AttributeError in msilib.Directory.glob(). - -- Issue #26013: Added compatibility with broken protocol 2 pickles created - in old Python 3 versions (3.4.3 and lower). - -- Issue #26129: Deprecated accepting non-integers in grp.getgrgid(). - -- Issue #25850: Use cross-compilation by default for 64-bit Windows. - -- Issue #25822: Add docstrings to the fields of urllib.parse results. - Patch contributed by Swati Jaiswal. - -- Issue #22642: Convert trace module option parsing mechanism to argparse. - Patch contributed by SilentGhost. - -- Issue #24705: Fix sysconfig._parse_makefile not expanding ${} vars - appearing before $() vars. - -- Issue #26069: Remove the deprecated apis in the trace module. - -- Issue #22138: Fix mock.patch behavior when patching descriptors. Restore - original values after patching. Patch contributed by Sean McCully. - -- Issue #25672: In the ssl module, enable the SSL_MODE_RELEASE_BUFFERS mode - option if it is safe to do so. - -- Issue #26012: Don't traverse into symlinks for ``**`` pattern in - pathlib.Path.[r]glob(). - -- Issue #24120: Ignore PermissionError when traversing a tree with - pathlib.Path.[r]glob(). Patch by Ulrich Petri. - -- Issue #21815: Accept ] characters in the data portion of imap responses, - in order to handle the flags with square brackets accepted and produced - by servers such as gmail. - -- Issue #25447: fileinput now uses sys.stdin as-is if it does not have a - buffer attribute (restores backward compatibility). - -- Issue #25971: Optimized creating Fractions from floats by 2 times and from - Decimals by 3 times. - -- Issue #25802: Document as deprecated the remaining implementations of - importlib.abc.Loader.load_module(). - -- Issue #25928: Add Decimal.as_integer_ratio(). - -- Issue #25447: Copying the lru_cache() wrapper object now always works, - independently from the type of the wrapped object (by returning the original - object unchanged). - -- Issue #25768: Have the functions in compileall return booleans instead of - ints and add proper documentation and tests for the return values. - -- Issue #24103: Fixed possible use after free in ElementTree.XMLPullParser. - -- Issue #25860: os.fwalk() no longer skips remaining directories when error - occurs. Original patch by Samson Lee. - -- Issue #25914: Fixed and simplified OrderedDict.__sizeof__. - -- Issue #25869: Optimized deepcopying ElementTree; it is now 20 times faster. - -- Issue #25873: Optimized iterating ElementTree. Iterating elements - Element.iter() is now 40% faster, iterating text Element.itertext() - is now up to 2.5 times faster. - -- Issue #25902: Fixed various refcount issues in ElementTree iteration. - -- Issue #22227: The TarFile iterator is reimplemented using generator. - This implementation is simpler that using class. - -- Issue #25638: Optimized ElementTree.iterparse(); it is now 2x faster. - Optimized ElementTree parsing; it is now 10% faster. - -- Issue #25761: Improved detecting errors in broken pickle data. - -- Issue #25717: Restore the previous behaviour of tolerating most fstat() - errors when opening files. This was a regression in 3.5a1, and stopped - anonymous temporary files from working in special cases. - -- Issue #24903: Fix regression in number of arguments compileall accepts when - '-d' is specified. The check on the number of arguments has been dropped - completely as it never worked correctly anyway. - -- Issue #25764: In the subprocess module, preserve any exception caused by - fork() failure when preexec_fn is used. - -- Issue #25771: Tweak the exception message for importlib.util.resolve_name() - when 'package' isn't specified but necessary. - -- Issue #6478: _strptime's regexp cache now is reset after changing timezone - with time.tzset(). - -- Issue #14285: When executing a package with the "python -m package" option, - and package initialization fails, a proper traceback is now reported. The - "runpy" module now lets exceptions from package initialization pass back to - the caller, rather than raising ImportError. - -- Issue #19771: Also in runpy and the "-m" option, omit the irrelevant - message ". . . is a package and cannot be directly executed" if the package - could not even be initialized (e.g. due to a bad ``*.pyc`` file). - -- Issue #25177: Fixed problem with the mean of very small and very large - numbers. As a side effect, statistics.mean and statistics.variance should - be significantly faster. - -- Issue #25718: Fixed copying object with state with boolean value is false. - -- Issue #10131: Fixed deep copying of minidom documents. Based on patch - by Marian Ganisin. - -- Issue #7990: dir() on ElementTree.Element now lists properties: "tag", - "text", "tail" and "attrib". Original patch by Santoso Wijaya. - -- Issue #25725: Fixed a reference leak in pickle.loads() when unpickling - invalid data including tuple instructions. - -- Issue #25663: In the Readline completer, avoid listing duplicate global - names, and search the global namespace before searching builtins. - -- Issue #25688: Fixed file leak in ElementTree.iterparse() raising an error. - -- Issue #23914: Fixed SystemError raised by unpickler on broken pickle data. - -- Issue #25691: Fixed crash on deleting ElementTree.Element attributes. - -- Issue #25624: ZipFile now always writes a ZIP_STORED header for directory - entries. Patch by Dingyuan Wang. - -- Issue #25626: Change three zlib functions to accept sizes that fit in - Py_ssize_t, but internally cap those sizes to UINT_MAX. This resolves a - regression in 3.5 where GzipFile.read() failed to read chunks larger than 2 - or 4 GiB. The change affects the zlib.Decompress.decompress() max_length - parameter, the zlib.decompress() bufsize parameter, and the - zlib.Decompress.flush() length parameter. - -- Issue #25583: Avoid incorrect errors raised by os.makedirs(exist_ok=True) - when the OS gives priority to errors such as EACCES over EEXIST. - -- Issue #25593: Change semantics of EventLoop.stop() in asyncio. - -- Issue #6973: When we know a subprocess.Popen process has died, do - not allow the send_signal(), terminate(), or kill() methods to do - anything as they could potentially signal a different process. - -- Issue #23883: Added missing APIs to __all__ to match the documented APIs - for the following modules: calendar, csv, enum, fileinput, ftplib, logging, - optparse, tarfile, threading and wave. Also added a - test.support.check__all__() helper. Patches by Jacek Kołodziej, Mauro - S. M. Rodrigues and Joel Taddei. - -- Issue #25590: In the Readline completer, only call getattr() once per - attribute. Also complete names of attributes such as properties and slots - which are listed by dir() but not yet created on an instance. - -- Issue #25498: Fix a crash when garbage-collecting ctypes objects created - by wrapping a memoryview. This was a regression made in 3.5a1. Based - on patch by Eryksun. - -- Issue #25584: Added "escape" to the __all__ list in the glob module. - -- Issue #25584: Fixed recursive glob() with patterns starting with ``**``. - -- Issue #25446: Fix regression in smtplib's AUTH LOGIN support. - -- Issue #18010: Fix the pydoc web server's module search function to handle - exceptions from importing packages. - -- Issue #25554: Got rid of circular references in regular expression parsing. - -- Issue #18973: Command-line interface of the calendar module now uses argparse - instead of optparse. - -- Issue #25510: fileinput.FileInput.readline() now returns b'' instead of '' - at the end if the FileInput was opened with binary mode. - Patch by Ryosuke Ito. - -- Issue #25503: Fixed inspect.getdoc() for inherited docstrings of properties. - Original patch by John Mark Vandenberg. - -- Issue #25515: Always use os.urandom as a source of randomness in uuid.uuid4. - -- Issue #21827: Fixed textwrap.dedent() for the case when largest common - whitespace is a substring of smallest leading whitespace. - Based on patch by Robert Li. - -- Issue #25447: The lru_cache() wrapper objects now can be copied and pickled - (by returning the original object unchanged). - -- Issue #25390: typing: Don't crash on Union[str, Pattern]. - -- Issue #25441: asyncio: Raise error from drain() when socket is closed. - -- Issue #25410: Cleaned up and fixed minor bugs in C implementation of - OrderedDict. - -- Issue #25411: Improved Unicode support in SMTPHandler through better use of - the email package. Thanks to user simon04 for the patch. - -- Move the imp module from a PendingDeprecationWarning to DeprecationWarning. - -- Issue #25407: Remove mentions of the formatter module being removed in - Python 3.6. - -- Issue #25406: Fixed a bug in C implementation of OrderedDict.move_to_end() - that caused segmentation fault or hang in iterating after moving several - items to the start of ordered dict. - -- Issue #25382: pickletools.dis() now outputs implicit memo index for the - MEMOIZE opcode. - -- Issue #25357: Add an optional newline paramer to binascii.b2a_base64(). - base64.b64encode() uses it to avoid a memory copy. - -- Issue #24164: Objects that need calling ``__new__`` with keyword arguments, - can now be pickled using pickle protocols older than protocol version 4. - -- Issue #25364: zipfile now works in threads disabled builds. - -- Issue #25328: smtpd's SMTPChannel now correctly raises a ValueError if both - decode_data and enable_SMTPUTF8 are set to true. - -- Issue #16099: RobotFileParser now supports Crawl-delay and Request-rate - extensions. Patch by Nikolay Bogoychev. - -- Issue #25316: distutils raises OSError instead of DistutilsPlatformError - when MSVC is not installed. - -- Issue #25380: Fixed protocol for the STACK_GLOBAL opcode in - pickletools.opcodes. - -- Issue #23972: Updates asyncio datagram create method allowing reuseport - and reuseaddr socket options to be set prior to binding the socket. - Mirroring the existing asyncio create_server method the reuseaddr option - for datagram sockets defaults to True if the O/S is 'posix' (except if the - platform is Cygwin). Patch by Chris Laws. - -- Issue #25304: Add asyncio.run_coroutine_threadsafe(). This lets you - submit a coroutine to a loop from another thread, returning a - concurrent.futures.Future. By Vincent Michel. - -- Issue #25232: Fix CGIRequestHandler to split the query from the URL at the - first question mark (?) rather than the last. Patch from Xiang Zhang. - -- Issue #24657: Prevent CGIRequestHandler from collapsing slashes in the - query part of the URL as if it were a path. Patch from Xiang Zhang. - -- Issue #25287: Don't add crypt.METHOD_CRYPT to crypt.methods if it's not - supported. Check if it is supported, it may not be supported on OpenBSD for - example. - -- Issue #23600: Default implementation of tzinfo.fromutc() was returning - wrong results in some cases. - -- Issue #25203: Failed readline.set_completer_delims() no longer left the - module in inconsistent state. - -- Issue #25011: rlcompleter now omits private and special attribute names unless - the prefix starts with underscores. - -- Issue #25209: rlcompleter now can add a space or a colon after completed - keyword. - -- Issue #22241: timezone.utc name is now plain 'UTC', not 'UTC-00:00'. - -- Issue #23517: fromtimestamp() and utcfromtimestamp() methods of - datetime.datetime now round microseconds to nearest with ties going to - nearest even integer (ROUND_HALF_EVEN), as round(float), instead of rounding - towards -Infinity (ROUND_FLOOR). - -- Issue #23552: Timeit now warns when there is substantial (4x) variance - between best and worst times. Patch from Serhiy Storchaka. - -- Issue #24633: site-packages/README -> README.txt. - -- Issue #24879: help() and pydoc can now list named tuple fields in the - order they were defined rather than alphabetically. The ordering is - determined by the _fields attribute if present. - -- Issue #24874: Improve speed of itertools.cycle() and make its - pickle more compact. - -- Fix crash in itertools.cycle.__setstate__() when the first argument wasn't - a list. - -- Issue #20059: urllib.parse raises ValueError on all invalid ports. - Patch by Martin Panter. - -- Issue #24360: Improve __repr__ of argparse.Namespace() for invalid - identifiers. Patch by Matthias Bussonnier. - -- Issue #23426: run_setup was broken in distutils. - Patch from Alexander Belopolsky. - -- Issue #13938: 2to3 converts StringTypes to a tuple. Patch from Mark Hammond. - -- Issue #2091: open() accepted a 'U' mode string containing '+', but 'U' can - only be used with 'r'. Patch from Jeff Balogh and John O'Connor. - -- Issue #8585: improved tests for zipimporter2. Patch from Mark Lawrence. - -- Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely. - Patch from Nicola Palumbo and Laurent De Buyst. - -- Issue #24426: Fast searching optimization in regular expressions now works - for patterns that starts with capturing groups. Fast searching optimization - now can't be disabled at compile time. - -- Issue #23661: unittest.mock side_effects can now be exceptions again. This - was a regression vs Python 3.4. Patch from Ignacio Rossi - -- Issue #13248: Remove deprecated inspect.getmoduleinfo function. - -- Issue #25578: Fix (another) memory leak in SSLSocket.getpeercer(). - -- Issue #25530: Disable the vulnerable SSLv3 protocol by default when creating - ssl.SSLContext. - -- Issue #25569: Fix memory leak in SSLSocket.getpeercert(). - -- Issue #25471: Sockets returned from accept() shouldn't appear to be - nonblocking. - -- Issue #25319: When threading.Event is reinitialized, the underlying condition - should use a regular lock rather than a recursive lock. - -- Skip getaddrinfo if host is already resolved. - Patch by A. Jesse Jiryu Davis. - -- Issue #26050: Add asyncio.StreamReader.readuntil() method. - Patch by Марк Коренберг. - -- Issue #25924: Avoid unnecessary serialization of getaddrinfo(3) calls on - OS X versions 10.5 or higher. Original patch by A. Jesse Jiryu Davis. - -- Issue #26406: Avoid unnecessary serialization of getaddrinfo(3) calls on - current versions of OpenBSD and NetBSD. Patch by A. Jesse Jiryu Davis. - -- Issue #26848: Fix asyncio/subprocess.communicate() to handle empty input. - Patch by Jack O'Connor. - -- Issue #27040: Add loop.get_exception_handler method - -- Issue #27041: asyncio: Add loop.create_future method - -IDLE ----- - -- Issue #20640: Add tests for idlelib.configHelpSourceEdit. - Patch by Saimadhav Heblikar. - -- In the 'IDLE-console differences' section of the IDLE doc, clarify - how running with IDLE affects sys.modules and the standard streams. - -- Issue #25507: fix incorrect change in IOBinding that prevented printing. - Augment IOBinding htest to include all major IOBinding functions. - -- Issue #25905: Revert unwanted conversion of ' to ’ RIGHT SINGLE QUOTATION - MARK in README.txt and open this and NEWS.txt with 'ascii'. - Re-encode CREDITS.txt to utf-8 and open it with 'utf-8'. - -- Issue #15348: Stop the debugger engine (normally in a user process) - before closing the debugger window (running in the IDLE process). - This prevents the RuntimeErrors that were being caught and ignored. - -- Issue #24455: Prevent IDLE from hanging when a) closing the shell while the - debugger is active (15347); b) closing the debugger with the [X] button - (15348); and c) activating the debugger when already active (24455). - The patch by Mark Roseman does this by making two changes. - 1. Suspend and resume the gui.interaction method with the tcl vwait - mechanism intended for this purpose (instead of root.mainloop & .quit). - 2. In gui.run, allow any existing interaction to terminate first. - -- Change 'The program' to 'Your program' in an IDLE 'kill program?' message - to make it clearer that the program referred to is the currently running - user program, not IDLE itself. - -- Issue #24750: Improve the appearance of the IDLE editor window status bar. - Patch by Mark Roseman. - -- Issue #25313: Change the handling of new built-in text color themes to better - address the compatibility problem introduced by the addition of IDLE Dark. - Consistently use the revised idleConf.CurrentTheme everywhere in idlelib. - -- Issue #24782: Extension configuration is now a tab in the IDLE Preferences - dialog rather than a separate dialog. The former tabs are now a sorted - list. Patch by Mark Roseman. - -- Issue #22726: Re-activate the config dialog help button with some content - about the other buttons and the new IDLE Dark theme. - -- Issue #24820: IDLE now has an 'IDLE Dark' built-in text color theme. - It is more or less IDLE Classic inverted, with a cobalt blue background. - Strings, comments, keywords, ... are still green, red, orange, ... . - To use it with IDLEs released before November 2015, hit the - 'Save as New Custom Theme' button and enter a new name, - such as 'Custom Dark'. The custom theme will work with any IDLE - release, and can be modified. - -- Issue #25224: README.txt is now an idlelib index for IDLE developers and - curious users. The previous user content is now in the IDLE doc chapter. - 'IDLE' now means 'Integrated Development and Learning Environment'. - -- Issue #24820: Users can now set breakpoint colors in - Settings -> Custom Highlighting. Original patch by Mark Roseman. - -- Issue #24972: Inactive selection background now matches active selection - background, as configured by users, on all systems. Found items are now - always highlighted on Windows. Initial patch by Mark Roseman. - -- Issue #24570: Idle: make calltip and completion boxes appear on Macs - affected by a tk regression. Initial patch by Mark Roseman. - -- Issue #24988: Idle ScrolledList context menus (used in debugger) - now work on Mac Aqua. Patch by Mark Roseman. - -- Issue #24801: Make right-click for context menu work on Mac Aqua. - Patch by Mark Roseman. - -- Issue #25173: Associate tkinter messageboxes with a specific widget. - For Mac OSX, make them a 'sheet'. Patch by Mark Roseman. - -- Issue #25198: Enhance the initial html viewer now used for Idle Help. - * Properly indent fixed-pitch text (patch by Mark Roseman). - * Give code snippet a very Sphinx-like light blueish-gray background. - * Re-use initial width and height set by users for shell and editor. - * When the Table of Contents (TOC) menu is used, put the section header - at the top of the screen. - -- Issue #25225: Condense and rewrite Idle doc section on text colors. - -- Issue #21995: Explain some differences between IDLE and console Python. - -- Issue #22820: Explain need for *print* when running file from Idle editor. - -- Issue #25224: Doc: augment Idle feature list and no-subprocess section. - -- Issue #25219: Update doc for Idle command line options. - Some were missing and notes were not correct. - -- Issue #24861: Most of idlelib is private and subject to change. - Use idleib.idle.* to start Idle. See idlelib.__init__.__doc__. - -- Issue #25199: Idle: add synchronization comments for future maintainers. - -- Issue #16893: Replace help.txt with help.html for Idle doc display. - The new idlelib/help.html is rstripped Doc/build/html/library/idle.html. - It looks better than help.txt and will better document Idle as released. - The tkinter html viewer that works for this file was written by Rose Roseman. - The now unused EditorWindow.HelpDialog class and helt.txt file are deprecated. - -- Issue #24199: Deprecate unused idlelib.idlever with possible removal in 3.6. - -- Issue #24790: Remove extraneous code (which also create 2 & 3 conflicts). - -Documentation -------------- - -- Issue #26736: Used HTTPS for external links in the documentation if possible. - -- Issue #6953: Rework the Readline module documentation to group related - functions together, and add more details such as what underlying Readline - functions and variables are accessed. - -- Issue #23606: Adds note to ctypes documentation regarding cdll.msvcrt. - -- Issue #24952: Clarify the default size argument of stack_size() in - the "threading" and "_thread" modules. Patch from Mattip. - -- Issue #26014: Update 3.x packaging documentation: - * "See also" links to the new docs are now provided in the legacy pages - * links to setuptools documentation have been updated - -Tests ------ - -- Issue #21916: Added tests for the turtle module. Patch by ingrid, - Gregory Loyse and Jelle Zijlstra. - -- Issue #26295: When using "python3 -m test --testdir=TESTDIR", regrtest - doesn't add "test." prefix to test module names. - -- Issue #26523: The multiprocessing thread pool (multiprocessing.dummy.Pool) - was untested. - -- Issue #26015: Added new tests for pickling iterators of mutable sequences. - -- Issue #26325: Added test.support.check_no_resource_warning() to check that - no ResourceWarning is emitted. - -- Issue #25940: Changed test_ssl to use its internal local server more. This - avoids relying on svn.python.org, which recently changed root certificate. - -- Issue #25616: Tests for OrderedDict are extracted from test_collections - into separate file test_ordered_dict. - -- Issue #25449: Added tests for OrderedDict subclasses. - -- Issue #25188: Add -P/--pgo to test.regrtest to suppress error output when - running the test suite for the purposes of a PGO build. Initial patch by - Alecsandru Patrascu. - -- Issue #22806: Add ``python -m test --list-tests`` command to list tests. - -- Issue #18174: ``python -m test --huntrleaks ...`` now also checks for leak of - file descriptors. Patch written by Richard Oudkerk. - -- Issue #25260: Fix ``python -m test --coverage`` on Windows. Remove the - list of ignored directories. - -- ``PCbuild\rt.bat`` now accepts an unlimited number of arguments to pass along - to regrtest.py. Previously there was a limit of 9. - -- Issue #26583: Skip test_timestamp_overflow in test_import if bytecode - files cannot be written. - -Build ------ - -- Issue #21277: Don't try to link _ctypes with a ffi_convenience library. - -- Issue #26884: Fix linking extension modules for cross builds. - Patch by Xavier de Gaye. - -- Issue #26932: Fixed support of RTLD_* constants defined as enum values, - not via macros (in particular on Android). Patch by Chi Hsuan Yen. - -- Issue #22359: Disable the rules for running _freeze_importlib and pgen when - cross-compiling. The output of these programs is normally saved with the - source code anyway, and is still regenerated when doing a native build. - Patch by Xavier de Gaye. - -- Issue #21668: Link audioop, _datetime, _ctypes_test modules to libm, - except on Mac OS X. Patch written by Chi Hsuan Yen. - -- Issue #25702: A --with-lto configure option has been added that will - enable link time optimizations at build time during a make profile-opt. - Some compilers and toolchains are known to not produce stable code when - using LTO, be sure to test things thoroughly before relying on it. - It can provide a few % speed up over profile-opt alone. - -- Issue #26624: Adds validation of ucrtbase[d].dll version with warning - for old versions. - -- Issue #17603: Avoid error about nonexistant fileblocks.o file by using a - lower-level check for st_blocks in struct stat. - -- Issue #26079: Fixing the build output folder for tix-8.4.3.6. Patch by - Bjoern Thiel. - -- Issue #26465: Update Windows builds to use OpenSSL 1.0.2g. - -- Issue #25348: Added ``--pgo`` and ``--pgo-job`` arguments to - ``PCbuild\build.bat`` for building with Profile-Guided Optimization. The - old ``PCbuild\build_pgo.bat`` script is removed. - -- Issue #25827: Add support for building with ICC to ``configure``, including - a new ``--with-icc`` flag. - -- Issue #25696: Fix installation of Python on UNIX with make -j9. - -- Issue #24986: It is now possible to build Python on Windows without errors - when external libraries are not available. - -- Issue #24421: Compile Modules/_math.c once, before building extensions. - Previously it could fail to compile properly if the math and cmath builds - were concurrent. - -- Issue #26465: Update OS X 10.5+ 32-bit-only installer to build - and link with OpenSSL 1.0.2g. - -- Issue #26268: Update Windows builds to use OpenSSL 1.0.2f. - -- Issue #25136: Support Apple Xcode 7's new textual SDK stub libraries. - -- Issue #24324: Do not enable unreachable code warnings when using - gcc as the option does not work correctly in older versions of gcc - and has been silently removed as of gcc-4.5. - -Windows -------- - -- Issue #27053: Updates make_zip.py to correctly generate library ZIP file. - -- Issue #26268: Update the prepare_ssl.py script to handle OpenSSL releases - that don't include the contents of the include directory (that is, 1.0.2e - and later). - -- Issue #26071: bdist_wininst created binaries fail to start and find - 32bit Python - -- Issue #26073: Update the list of magic numbers in launcher - -- Issue #26065: Excludes venv from library when generating embeddable - distro. - -- Issue #25022: Removed very outdated PC/example_nt/ directory. - -Tools/Demos ------------ - -- Issue #26799: Fix python-gdb.py: don't get C types once when the Python code - is loaded, but get C types on demand. The C types can change if - python-gdb.py is loaded before the Python executable. Patch written by Thomas - Ilsche. - -- Issue #26271: Fix the Freeze tool to properly use flags passed through - configure. Patch by Daniel Shaulov. - -- Issue #26489: Add dictionary unpacking support to Tools/parser/unparse.py. - Patch by Guo Ci Teo. - -- Issue #26316: Fix variable name typo in Argument Clinic. - -- Issue #25440: Fix output of python-config --extension-suffix. - -- Issue #25154: The pyvenv script has been deprecated in favour of - `python3 -m venv`. - -C API ------ - -- Issue #26312: SystemError is now raised in all programming bugs with using - PyArg_ParseTupleAndKeywords(). RuntimeError did raised before in some - programming bugs. - -- Issue #26198: ValueError is now raised instead of TypeError on buffer - overflow in parsing "es#" and "et#" format units. SystemError is now raised - instead of TypeError on programmical error in parsing format string. - - -What's New in Python 3.5.3? -=========================== - -Release date: 2017-01-17 - -There were no code changes between 3.5.3rc1 and 3.5.3 final. - - -What's New in Python 3.5.3 release candidate 1? -=============================================== - -Release date: 2017-01-02 - -Core and Builtins ------------------ - -- Issue #29073: bytearray formatting no longer truncates on first null byte. - -- Issue #28932: Do not include <sys/random.h> if it does not exist. - -- Issue #28147: Fix a memory leak in split-table dictionaries: setattr() - must not convert combined table into split table. - -- Issue #25677: Correct the positioning of the syntax error caret for - indented blocks. Based on patch by Michael Layzell. - -- Issue #29000: Fixed bytes formatting of octals with zero padding in alternate - form. - -- Issue #28512: Fixed setting the offset attribute of SyntaxError by - PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject(). - -- Issue #28991: functools.lru_cache() was susceptible to an obscure reentrancy - bug caused by a monkey-patched len() function. - -- Issue #28648: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X - when decode astral characters. Patch by Xiang Zhang. - -- Issue #19398: Extra slash no longer added to sys.path components in case of - empty compile-time PYTHONPATH components. - -- Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug - build. - -- Issue #23782: Fixed possible memory leak in _PyTraceback_Add() and exception - loss in PyTraceBack_Here(). - -- Issue #28379: Added sanity checks and tests for PyUnicode_CopyCharacters(). - Patch by Xiang Zhang. - -- Issue #28376: The type of long range iterator is now registered as Iterator. - Patch by Oren Milman. - -- Issue #28376: The constructor of range_iterator now checks that step is not 0. - Patch by Oren Milman. - -- Issue #26906: Resolving special methods of uninitialized type now causes - implicit initialization of the type instead of a fail. - -- Issue #18287: PyType_Ready() now checks that tp_name is not NULL. - Original patch by Niklas Koep. - -- Issue #24098: Fixed possible crash when AST is changed in process of - compiling it. - -- Issue #28350: String constants with null character no longer interned. - -- Issue #26617: Fix crash when GC runs during weakref callbacks. - -- Issue #27942: String constants now interned recursively in tuples and frozensets. - -- Issue #21578: Fixed misleading error message when ImportError called with - invalid keyword args. - -- Issue #28203: Fix incorrect type in error message from - ``complex(1.0, {2:3})``. Patch by Soumya Sharma. - -- Issue #27955: Fallback on reading /dev/urandom device when the getrandom() - syscall fails with EPERM, for example when blocked by SECCOMP. - -- Issue #28131: Fix a regression in zipimport's compile_source(). zipimport - should use the same optimization level as the interpreter. - -- Issue #25221: Fix corrupted result from PyLong_FromLong(0) when - Python is compiled with NSMALLPOSINTS = 0. - -- Issue #25758: Prevents zipimport from unnecessarily encoding a filename - (patch by Eryk Sun) - -- Issue #28189: dictitems_contains no longer swallows compare errors. - (Patch by Xiang Zhang) - -- Issue #27812: Properly clear out a generator's frame's backreference to the - generator to prevent crashes in frame.clear(). - -- Issue #27811: Fix a crash when a coroutine that has not been awaited is - finalized with warnings-as-errors enabled. - -- Issue #27587: Fix another issue found by PVS-Studio: Null pointer check - after use of 'def' in _PyState_AddModule(). - Initial patch by Christian Heimes. - -- Issue #26020: set literal evaluation order did not match documented behaviour. - -- Issue #27782: Multi-phase extension module import now correctly allows the - ``m_methods`` field to be used to add module level functions to instances - of non-module types returned from ``Py_create_mod``. Patch by Xiang Zhang. - -- Issue #27936: The round() function accepted a second None argument - for some types but not for others. Fixed the inconsistency by - accepting None for all numeric types. - -- Issue #27487: Warn if a submodule argument to "python -m" or - runpy.run_module() is found in sys.modules after parent packages are - imported, but before the submodule is executed. - -- Issue #27558: Fix a SystemError in the implementation of "raise" statement. - In a brand new thread, raise a RuntimeError since there is no active - exception to reraise. Patch written by Xiang Zhang. - -- Issue #27419: Standard __import__() no longer look up "__import__" in globals - or builtins for importing submodules or "from import". Fixed handling an - error of non-string package name. - -- Issue #27083: Respect the PYTHONCASEOK environment variable under Windows. - -- Issue #27514: Make having too many statically nested blocks a SyntaxError - instead of SystemError. - -- Issue #27473: Fixed possible integer overflow in bytes and bytearray - concatenations. Patch by Xiang Zhang. - -- Issue #27507: Add integer overflow check in bytearray.extend(). Patch by - Xiang Zhang. - -- Issue #27581: Don't rely on wrapping for overflow check in - PySequence_Tuple(). Patch by Xiang Zhang. - -- Issue #27443: __length_hint__() of bytearray iterators no longer return a - negative integer for a resized bytearray. - -- Issue #27942: Fix memory leak in codeobject.c - -Library -------- - -- Issue #15812: inspect.getframeinfo() now correctly shows the first line of - a context. Patch by Sam Breese. - -- Issue #29094: Offsets in a ZIP file created with extern file object and modes - "w" and "x" now are relative to the start of the file. - -- Issue #13051: Fixed recursion errors in large or resized - curses.textpad.Textbox. Based on patch by Tycho Andersen. - -- Issue #29119: Fix weakrefs in the pure python version of - collections.OrderedDict move_to_end() method. - Contributed by Andra Bogildea. - -- Issue #9770: curses.ascii predicates now work correctly with negative - integers. - -- Issue #28427: old keys should not remove new values from - WeakValueDictionary when collecting from another thread. - -- Issue #28923: Remove editor artifacts from Tix.py. - -- Issue #28871: Fixed a crash when deallocate deep ElementTree. - -- Issue #19542: Fix bugs in WeakValueDictionary.setdefault() and - WeakValueDictionary.pop() when a GC collection happens in another - thread. - -- Issue #20191: Fixed a crash in resource.prlimit() when pass a sequence that - doesn't own its elements as limits. - -- Issue #28779: multiprocessing.set_forkserver_preload() would crash the - forkserver process if a preloaded module instantiated some - multiprocessing objects such as locks. - -- Issue #28847: dbm.dumb now supports reading read-only files and no longer - writes the index file when it is not changed. - -- Issue #25659: In ctypes, prevent a crash calling the from_buffer() and - from_buffer_copy() methods on abstract classes like Array. - -- Issue #28732: Fix crash in os.spawnv() with no elements in args - -- Issue #28485: Always raise ValueError for negative - compileall.compile_dir(workers=...) parameter, even when multithreading is - unavailable. - -- Issue #28387: Fixed possible crash in _io.TextIOWrapper deallocator when - the garbage collector is invoked in other thread. Based on patch by - Sebastian Cufre. - -- Issue #27517: LZMA compressor and decompressor no longer raise exceptions if - given empty data twice. Patch by Benjamin Fogle. - -- Issue #28549: Fixed segfault in curses's addch() with ncurses6. - -- Issue #28449: tarfile.open() with mode "r" or "r:" now tries to open a tar - file with compression before trying to open it without compression. Otherwise - it had 50% chance failed with ignore_zeros=True. - -- Issue #23262: The webbrowser module now supports Firefox 36+ and derived - browsers. Based on patch by Oleg Broytman. - -- Issue #27939: Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused - by representing the scale as float value internally in Tk. tkinter.IntVar - now works if float value is set to underlying Tk variable. - -- Issue #28255: calendar.TextCalendar().prmonth() no longer prints a space - at the start of new line after printing a month's calendar. Patch by - Xiang Zhang. - -- Issue #20491: The textwrap.TextWrapper class now honors non-breaking spaces. - Based on patch by Kaarle Ritvanen. - -- Issue #28353: os.fwalk() no longer fails on broken links. - -- Issue #25464: Fixed HList.header_exists() in tkinter.tix module by addin - a workaround to Tix library bug. - -- Issue #28488: shutil.make_archive() no longer add entry "./" to ZIP archive. - -- Issue #24452: Make webbrowser support Chrome on Mac OS X. - -- Issue #20766: Fix references leaked by pdb in the handling of SIGINT - handlers. - -- Issue #26293: Fixed writing ZIP files that starts not from the start of the - file. Offsets in ZIP file now are relative to the start of the archive in - conforming to the specification. - -- Issue #28321: Fixed writing non-BMP characters with binary format in plistlib. - -- Issue #28322: Fixed possible crashes when unpickle itertools objects from - incorrect pickle data. Based on patch by John Leitch. - -- Fix possible integer overflows and crashes in the mmap module with unusual - usage patterns. - -- Issue #1703178: Fix the ability to pass the --link-objects option to the - distutils build_ext command. - -- Issue #28253: Fixed calendar functions for extreme months: 0001-01 - and 9999-12. - - Methods itermonthdays() and itermonthdays2() are reimplemented so - that they don't call itermonthdates() which can cause datetime.date - under/overflow. - -- Issue #28275: Fixed possible use after free in the decompress() - methods of the LZMADecompressor and BZ2Decompressor classes. - Original patch by John Leitch. - -- Issue #27897: Fixed possible crash in sqlite3.Connection.create_collation() - if pass invalid string-like object as a name. Patch by Xiang Zhang. - -- Issue #18893: Fix invalid exception handling in Lib/ctypes/macholib/dyld.py. - Patch by Madison May. - -- Issue #27611: Fixed support of default root window in the tkinter.tix module. - -- Issue #27348: In the traceback module, restore the formatting of exception - messages like "Exception: None". This fixes a regression introduced in - 3.5a2. - -- Issue #25651: Allow falsy values to be used for msg parameter of subTest(). - -- Issue #27932: Prevent memory leak in win32_ver(). - -- Fix UnboundLocalError in socket._sendfile_use_sendfile. - -- Issue #28075: Check for ERROR_ACCESS_DENIED in Windows implementation of - os.stat(). Patch by Eryk Sun. - -- Issue #25270: Prevent codecs.escape_encode() from raising SystemError when - an empty bytestring is passed. - -- Issue #28181: Get antigravity over HTTPS. Patch by Kaartic Sivaraam. - -- Issue #25895: Enable WebSocket URL schemes in urllib.parse.urljoin. - Patch by Gergely Imreh and Markus Holtermann. - -- Issue #27599: Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp(). - -- Issue #19003:m email.generator now replaces only ``\r`` and/or ``\n`` line - endings, per the RFC, instead of all unicode line endings. - -- Issue #28019: itertools.count() no longer rounds non-integer step in range - between 1.0 and 2.0 to 1. - -- Issue #25969: Update the lib2to3 grammar to handle the unpacking - generalizations added in 3.5. - -- Issue #14977: mailcap now respects the order of the lines in the mailcap - files ("first match"), as required by RFC 1542. Patch by Michael Lazar. - -- Issue #24594: Validates persist parameter when opening MSI database - -- Issue #17582: xml.etree.ElementTree nows preserves whitespaces in attributes - (Patch by Duane Griffin. Reviewed and approved by Stefan Behnel.) - -- Issue #28047: Fixed calculation of line length used for the base64 CTE - in the new email policies. - -- Issue #27445: Don't pass str(_charset) to MIMEText.set_payload(). - Patch by Claude Paroz. - -- Issue #22450: urllib now includes an ``Accept: */*`` header among the - default headers. This makes the results of REST API requests more - consistent and predictable especially when proxy servers are involved. - -- lib2to3.pgen3.driver.load_grammar() now creates a stable cache file - between runs given the same Grammar.txt input regardless of the hash - randomization setting. - -- Issue #27570: Avoid zero-length memcpy() etc calls with null source - pointers in the "ctypes" and "array" modules. - -- Issue #22233: Break email header lines *only* on the RFC specified CR and LF - characters, not on arbitrary unicode line breaks. This also fixes a bug in - HTTP header parsing. - -- Issue #27988: Fix email iter_attachments incorrect mutation of payload list. - -- Issue #27691: Fix ssl module's parsing of GEN_RID subject alternative name - fields in X.509 certs. - -- Issue #27850: Remove 3DES from ssl module's default cipher list to counter - measure sweet32 attack (CVE-2016-2183). - -- Issue #27766: Add ChaCha20 Poly1305 to ssl module's default ciper list. - (Required OpenSSL 1.1.0 or LibreSSL). - -- Issue #26470: Port ssl and hashlib module to OpenSSL 1.1.0. - -- Remove support for passing a file descriptor to os.access. It never worked but - previously didn't raise. - -- Issue #12885: Fix error when distutils encounters symlink. - -- Issue #27881: Fixed possible bugs when setting sqlite3.Connection.isolation_level. - Based on patch by Xiang Zhang. - -- Issue #27861: Fixed a crash in sqlite3.Connection.cursor() when a factory - creates not a cursor. Patch by Xiang Zhang. - -- Issue #19884: Avoid spurious output on OS X with Gnu Readline. - -- Issue #27706: Restore deterministic behavior of random.Random().seed() - for string seeds using seeding version 1. Allows sequences of calls - to random() to exactly match those obtained in Python 2. - Patch by Nofar Schnider. - -- Issue #10513: Fix a regression in Connection.commit(). Statements should - not be reset after a commit. - -- A new version of typing.py from https://github.com/python/typing: - - Collection (only for 3.6) (Issue #27598) - - Add FrozenSet to __all__ (upstream #261) - - fix crash in _get_type_vars() (upstream #259) - - Remove the dict constraint in ForwardRef._eval_type (upstream #252) - -- Issue #27539: Fix unnormalised ``Fraction.__pow__`` result in the case - of negative exponent and negative base. - -- Issue #21718: cursor.description is now available for queries using CTEs. - -- Issue #2466: posixpath.ismount now correctly recognizes mount points which - the user does not have permission to access. - -- Issue #27773: Correct some memory management errors server_hostname in - _ssl.wrap_socket(). - -- Issue #26750: unittest.mock.create_autospec() now works properly for - subclasses of property() and other data descriptors. - -- In the curses module, raise an error if window.getstr() or window.instr() is - passed a negative value. - -- Issue #27783: Fix possible usage of uninitialized memory in - operator.methodcaller. - -- Issue #27774: Fix possible Py_DECREF on unowned object in _sre. - -- Issue #27760: Fix possible integer overflow in binascii.b2a_qp. - -- Issue #27758: Fix possible integer overflow in the _csv module for large - record lengths. - -- Issue #27568: Prevent HTTPoxy attack (CVE-2016-1000110). Ignore the - HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates - that the script is in CGI mode. - -- Issue #27656: Do not assume sched.h defines any SCHED_* constants. - -- Issue #27130: In the "zlib" module, fix handling of large buffers - (typically 4 GiB) when compressing and decompressing. Previously, inputs - were limited to 4 GiB, and compression and decompression operations did not - properly handle results of 4 GiB. - -- Issue #27533: Release GIL in nt._isdir - -- Issue #17711: Fixed unpickling by the persistent ID with protocol 0. - Original patch by Alexandre Vassalotti. - -- Issue #27522: Avoid an unintentional reference cycle in email.feedparser. - -- Issue #26844: Fix error message for imp.find_module() to refer to 'path' - instead of 'name'. Patch by Lev Maximov. - -- Issue #23804: Fix SSL zero-length recv() calls to not block and not raise - an error about unclean EOF. - -- Issue #27466: Change time format returned by http.cookie.time2netscape, - confirming the netscape cookie format and making it consistent with - documentation. - -- Issue #26664: Fix activate.fish by removing mis-use of ``$``. - -- Issue #22115: Fixed tracing Tkinter variables: trace_vdelete() with wrong - mode no longer break tracing, trace_vinfo() now always returns a list of - pairs of strings, tracing in the "u" mode now works. - -- Fix a scoping issue in importlib.util.LazyLoader which triggered an - UnboundLocalError when lazy-loading a module that was already put into - sys.modules. - -- Issue #27079: Fixed curses.ascii functions isblank(), iscntrl() and ispunct(). - -- Issue #26754: Some functions (compile() etc) accepted a filename argument - encoded as an iterable of integers. Now only strings and byte-like objects - are accepted. - -- Issue #27048: Prevents distutils failing on Windows when environment - variables contain non-ASCII characters - -- Issue #27330: Fixed possible leaks in the ctypes module. - -- Issue #27238: Got rid of bare excepts in the turtle module. Original patch - by Jelle Zijlstra. - -- Issue #27122: When an exception is raised within the context being managed - by a contextlib.ExitStack() and one of the exit stack generators - catches and raises it in a chain, do not re-raise the original exception - when exiting, let the new chained one through. This avoids the PEP 479 - bug described in issue25782. - -- [Security] Issue #27278: Fix os.urandom() implementation using getrandom() on - Linux. Truncate size to INT_MAX and loop until we collected enough random - bytes, instead of casting a directly Py_ssize_t to int. - -- Issue #26386: Fixed ttk.TreeView selection operations with item id's - containing spaces. - -- [Security] Issue #22636: Avoid shell injection problems with - ctypes.util.find_library(). - -- Issue #16182: Fix various functions in the "readline" module to use the - locale encoding, and fix get_begidx() and get_endidx() to return code point - indexes. - -- Issue #27392: Add loop.connect_accepted_socket(). - Patch by Jim Fulton. - -- Issue #27930: Improved behaviour of logging.handlers.QueueListener. - Thanks to Paulo Andrade and Petr Viktorin for the analysis and patch. - -- Issue #21201: Improves readability of multiprocessing error message. Thanks - to Wojciech Walczak for patch. - -- Issue #27456: asyncio: Set TCP_NODELAY by default. - -- Issue #27906: Fix socket accept exhaustion during high TCP traffic. - Patch by Kevin Conway. - -- Issue #28174: Handle when SO_REUSEPORT isn't properly supported. - Patch by Seth Michael Larson. - -- Issue #26654: Inspect functools.partial in asyncio.Handle.__repr__. - Patch by iceboy. - -- Issue #26909: Fix slow pipes IO in asyncio. - Patch by INADA Naoki. - -- Issue #28176: Fix callbacks race in asyncio.SelectorLoop.sock_connect. - -- Issue #27759: Fix selectors incorrectly retain invalid file descriptors. - Patch by Mark Williams. - -- Issue #28368: Refuse monitoring processes if the child watcher has - no loop attached. - Patch by Vincent Michel. - -- Issue #28369: Raise RuntimeError when transport's FD is used with - add_reader, add_writer, etc. - -- Issue #28370: Speedup asyncio.StreamReader.readexactly. - Patch by Коренберг Марк. - -- Issue #28371: Deprecate passing asyncio.Handles to run_in_executor. - -- Issue #28372: Fix asyncio to support formatting of non-python coroutines. - -- Issue #28399: Remove UNIX socket from FS before binding. - Patch by Коренберг Марк. - -- Issue #27972: Prohibit Tasks to await on themselves. - -- Issue #26923: Fix asyncio.Gather to refuse being cancelled once all - children are done. - Patch by Johannes Ebke. - -- Issue #26796: Don't configure the number of workers for default - threadpool executor. - Initial patch by Hans Lawrenz. - -- Issue #28600: Optimize loop.call_soon(). - -- Issue #28613: Fix get_event_loop() return the current loop if - called from coroutines/callbacks. - -- Issue #28639: Fix inspect.isawaitable to always return bool - Patch by Justin Mayfield. - -- Issue #28652: Make loop methods reject socket kinds they do not support. - -- Issue #28653: Fix a refleak in functools.lru_cache. - -- Issue #28703: Fix asyncio.iscoroutinefunction to handle Mock objects. - -- Issue #24142: Reading a corrupt config file left the parser in an - invalid state. Original patch by Florian Höch. - -- Issue #28990: Fix SSL hanging if connection is closed before handshake - completed. - (Patch by HoHo-Ho) - -IDLE ----- - -- Issue #15308: Add 'interrupt execution' (^C) to Shell menu. - Patch by Roger Serwy, updated by Bayard Randel. - -- Issue #27922: Stop IDLE tests from 'flashing' gui widgets on the screen. - -- Add version to title of IDLE help window. - -- Issue #25564: In section on IDLE -- console differences, mention that - using exec means that __builtins__ is defined for each statement. - -- Issue #27714: text_textview and test_autocomplete now pass when re-run - in the same process. This occurs when test_idle fails when run with the - -w option but without -jn. Fix warning from test_config. - -- Issue #25507: IDLE no longer runs buggy code because of its tkinter imports. - Users must include the same imports required to run directly in Python. - -- Issue #27452: add line counter and crc to IDLE configHandler test dump. - -- Issue #27365: Allow non-ascii chars in IDLE NEWS.txt, for contributor names. - -- Issue #27245: IDLE: Cleanly delete custom themes and key bindings. - Previously, when IDLE was started from a console or by import, a cascade - of warnings was emitted. Patch by Serhiy Storchaka. - -C API ------ - -- Issue #28808: PyUnicode_CompareWithASCIIString() now never raises exceptions. - -- Issue #26754: PyUnicode_FSDecoder() accepted a filename argument encoded as - an iterable of integers. Now only strings and bytes-like objects are accepted. - -Documentation -------------- - -- Issue #28513: Documented command-line interface of zipfile. - -Tests ------ - -- Issue #28950: Disallow -j0 to be combined with -T/-l/-M in regrtest - command line arguments. - -- Issue #28666: Now test.support.rmtree is able to remove unwritable or - unreadable directories. - -- Issue #23839: Various caches now are cleared before running every test file. - -- Issue #28409: regrtest: fix the parser of command line arguments. - -- Issue #27787: Call gc.collect() before checking each test for "dangling - threads", since the dangling threads are weak references. - -- Issue #27369: In test_pyexpat, avoid testing an error message detail that - changed in Expat 2.2.0. - -Tools/Demos ------------ - -- Issue #27952: Get Tools/scripts/fixcid.py working with Python 3 and the - current "re" module, avoid invalid Python backslash escapes, and fix a bug - parsing escaped C quote signs. - -- Issue #27332: Fixed the type of the first argument of module-level functions - generated by Argument Clinic. Patch by Petr Viktorin. - -- Issue #27418: Fixed Tools/importbench/importbench.py. - -Windows -------- - -- Issue #28251: Improvements to help manuals on Windows. - -- Issue #28110: launcher.msi has different product codes between 32-bit and - 64-bit - -- Issue #25144: Ensures TargetDir is set before continuing with custom - install. - -- Issue #27469: Adds a shell extension to the launcher so that drag and drop - works correctly. - -- Issue #27309: Enabled proper Windows styles in python[w].exe manifest. - -Build ------ - -- Issue #29080: Removes hard dependency on hg.exe from PCBuild/build.bat - -- Issue #23903: Added missed names to PC/python3.def. - -- Issue #10656: Fix out-of-tree building on AIX. Patch by Tristan Carel and - Michael Haubenwallner. - -- Issue #26359: Rename --with-optimiations to --enable-optimizations. - -- Issue #28444: Fix missing extensions modules when cross compiling. - -- Issue #28248: Update Windows build and OS X installers to use OpenSSL 1.0.2j. - -- Issue #28258: Fixed build with Estonian locale (python-config and distclean - targets in Makefile). Patch by Arfrever Frehtes Taifersar Arahesis. - -- Issue #26661: setup.py now detects system libffi with multiarch wrapper. - -- Issue #28066: Fix the logic that searches build directories for generated - include files when building outside the source tree. - -- Issue #15819: Remove redundant include search directory option for building - outside the source tree. - -- Issue #27566: Fix clean target in freeze makefile (patch by Lisa Roach) - -- Issue #27705: Update message in validate_ucrtbase.py - -- Issue #27983: Cause lack of llvm-profdata tool when using clang as - required for PGO linking to be a configure time error rather than - make time when --with-optimizations is enabled. Also improve our - ability to find the llvm-profdata tool on MacOS and some Linuxes. - -- Issue #26307: The profile-opt build now applies PGO to the built-in modules. - -- Issue #26359: Add the --with-optimizations configure flag. - -- Issue #27713: Suppress spurious build warnings when updating importlib's - bootstrap files. Patch by Xiang Zhang - -- Issue #25825: Correct the references to Modules/python.exp and ld_so_aix, - which are required on AIX. This updates references to an installation path - that was changed in 3.2a4, and undoes changed references to the build tree - that were made in 3.5.0a1. - -- Issue #27453: CPP invocation in configure must use CPPFLAGS. Patch by - Chi Hsuan Yen. - -- Issue #27641: The configure script now inserts comments into the makefile - to prevent the pgen and _freeze_importlib executables from being cross- - compiled. - -- Issue #26662: Set PYTHON_FOR_GEN in configure as the Python program to be - used for file generation during the build. - -- Issue #10910: Avoid C++ compilation errors on FreeBSD and OS X. - Also update FreedBSD version checks for the original ctype UTF-8 workaround. - -- Issue #28676: Prevent missing 'getentropy' declaration warning on macOS. - Patch by Gareth Rees. - - -What's New in Python 3.5.2? -=========================== - -Release date: 2016-06-26 - -Core and Builtins ------------------ - -- Issue #26930: Update Windows builds to use OpenSSL 1.0.2h. - -Tests ------ - -- Issue #26867: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test. - -IDLE ----- - -- Issue #27365: Allow non-ascii in idlelib/NEWS.txt - minimal part for 3.5.2. - - -What's New in Python 3.5.2 release candidate 1? -=============================================== - -Release date: 2016-06-12 - -Core and Builtins ------------------ - -- Issue #27066: Fixed SystemError if a custom opener (for open()) returns a - negative number without setting an exception. - -- Issue #20041: Fixed TypeError when frame.f_trace is set to None. - Patch by Xavier de Gaye. - -- Issue #26168: Fixed possible refleaks in failing Py_BuildValue() with the "N" - format unit. - -- Issue #26991: Fix possible refleak when creating a function with annotations. - -- Issue #27039: Fixed bytearray.remove() for values greater than 127. Patch by - Joe Jevnik. - -- Issue #23640: int.from_bytes() no longer bypasses constructors for subclasses. - -- Issue #26811: gc.get_objects() no longer contains a broken tuple with NULL - pointer. - -- Issue #20120: Use RawConfigParser for .pypirc parsing, - removing support for interpolation unintentionally added - with move to Python 3. Behavior no longer does any - interpolation in .pypirc files, matching behavior in Python - 2.7 and Setuptools 19.0. - -- Issue #26659: Make the builtin slice type support cycle collection. - -- Issue #26718: super.__init__ no longer leaks memory if called multiple times. - NOTE: A direct call of super.__init__ is not endorsed! - -- Issue #25339: PYTHONIOENCODING now has priority over locale in setting the - error handler for stdin and stdout. - -- Issue #26494: Fixed crash on iterating exhausting iterators. - Affected classes are generic sequence iterators, iterators of str, bytes, - bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding - views and os.scandir() iterator. - -- Issue #26581: If coding cookie is specified multiple times on a line in - Python source code file, only the first one is taken to account. - -- Issue #26464: Fix str.translate() when string is ASCII and first replacements - removes character, but next replacement uses a non-ASCII character or a - string longer than 1 character. Regression introduced in Python 3.5.0. - -- Issue #22836: Ensure exception reports from PyErr_Display() and - PyErr_WriteUnraisable() are sensible even when formatting them produces - secondary errors. This affects the reports produced by - sys.__excepthook__() and when __del__() raises an exception. - -- Issue #26302: Correct behavior to reject comma as a legal character for - cookie names. - -- Issue #4806: Avoid masking the original TypeError exception when using star - (``*``) unpacking in function calls. Based on patch by Hagen Fürstenau and - Daniel Urban. - -- Issue #27138: Fix the doc comment for FileFinder.find_spec(). - -- Issue #26154: Add a new private _PyThreadState_UncheckedGet() function to get - the current Python thread state, but don't issue a fatal error if it is NULL. - This new function must be used instead of accessing directly the - _PyThreadState_Current variable. The variable is no more exposed since - Python 3.5.1 to hide the exact implementation of atomic C types, to avoid - compiler issues. - -- Issue #26194: Deque.insert() gave odd results for bounded deques that had - reached their maximum size. Now an IndexError will be raised when attempting - to insert into a full deque. - -- Issue #25843: When compiling code, don't merge constants if they are equal - but have a different types. For example, ``f1, f2 = lambda: 1, lambda: 1.0`` - is now correctly compiled to two different functions: ``f1()`` returns ``1`` - (``int``) and ``f2()`` returns ``1.0`` (``int``), even if ``1`` and ``1.0`` - are equal. - -- Issue #22995: [UPDATE] Comment out the one of the pickleability tests in - _PyObject_GetState() due to regressions observed in Cython-based projects. - -- Issue #25961: Disallowed null characters in the type name. - -- Issue #25973: Fix segfault when an invalid nonlocal statement binds a name - starting with two underscores. - -- Issue #22995: Instances of extension types with a state that aren't - subclasses of list or dict and haven't implemented any pickle-related - methods (__reduce__, __reduce_ex__, __getnewargs__, __getnewargs_ex__, - or __getstate__), can no longer be pickled. Including memoryview. - -- Issue #20440: Massive replacing unsafe attribute setting code with special - macro Py_SETREF. - -- Issue #25766: Special method __bytes__() now works in str subclasses. - -- Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size. - This allows sys.getsize() to work correctly with their subclasses with - __slots__ defined. - -- Issue #25709: Fixed problem with in-place string concatenation and utf-8 - cache. - -- Issue #27147: Mention PEP 420 in the importlib docs. - -- Issue #24097: Fixed crash in object.__reduce__() if slot name is freed inside - __getattr__. - -- Issue #24731: Fixed crash on converting objects with special methods - __bytes__, __trunc__, and __float__ returning instances of subclasses of - bytes, int, and float to subclasses of bytes, int, and float correspondingly. - -- Issue #26478: Fix semantic bugs when using binary operators with dictionary - views and tuples. - -- Issue #26171: Fix possible integer overflow and heap corruption in - zipimporter.get_data(). - -- Issue #25660: Fix TAB key behaviour in REPL with readline. - -- Issue #25887: Raise a RuntimeError when a coroutine object is awaited - more than once. - -- Issue #27243: Update the __aiter__ protocol: instead of returning - an awaitable that resolves to an asynchronous iterator, the asynchronous - iterator should be returned directly. Doing the former will trigger a - PendingDeprecationWarning. - - -Library -------- - -- [Security] Issue #26556: Update expat to 2.1.1, fixes CVE-2015-1283. - -- [Security] Fix TLS stripping vulnerability in smtplib, CVE-2016-0772. - Reported by Team Oststrom - -- Issue #21386: Implement missing IPv4Address.is_global property. It was - documented since 07a5610bae9d. Initial patch by Roger Luethi. - -- Issue #20900: distutils register command now decodes HTTP responses - correctly. Initial patch by ingrid. - -- A new version of typing.py provides several new classes and - features: @overload outside stubs, Reversible, DefaultDict, Text, - ContextManager, Type[], NewType(), TYPE_CHECKING, and numerous bug - fixes (note that some of the new features are not yet implemented in - mypy or other static analyzers). Also classes for PEP 492 - (Awaitable, AsyncIterable, AsyncIterator) have been added (in fact - they made it into 3.5.1 but were never mentioned). - -- Issue #25738: Stop http.server.BaseHTTPRequestHandler.send_error() from - sending a message body for 205 Reset Content. Also, don't send Content - header fields in responses that don't have a body. Patch by Susumu - Koshiba. - -- Issue #21313: Fix the "platform" module to tolerate when sys.version - contains truncated build information. - -- [Security] Issue #26839: On Linux, :func:`os.urandom` now calls - ``getrandom()`` with ``GRND_NONBLOCK`` to fall back on reading - ``/dev/urandom`` if the urandom entropy pool is not initialized yet. Patch - written by Colm Buckley. - -- Issue #27164: In the zlib module, allow decompressing raw Deflate streams - with a predefined zdict. Based on patch by Xiang Zhang. - -- Issue #24291: Fix wsgiref.simple_server.WSGIRequestHandler to completely - write data to the client. Previously it could do partial writes and - truncate data. Also, wsgiref.handler.ServerHandler can now handle stdout - doing partial writes, but this is deprecated. - -- Issue #26809: Add ``__all__`` to :mod:`string`. Patch by Emanuel Barry. - -- Issue #26373: subprocess.Popen.communicate now correctly ignores - BrokenPipeError when the child process dies before .communicate() - is called in more/all circumstances. - -- Issue #21776: distutils.upload now correctly handles HTTPError. - Initial patch by Claudiu Popa. - -- Issue #27114: Fix SSLContext._load_windows_store_certs fails with - PermissionError - -- Issue #18383: Avoid creating duplicate filters when using filterwarnings - and simplefilter. Based on patch by Alex Shkop. - -- Issue #27057: Fix os.set_inheritable() on Android, ioctl() is blocked by - SELinux and fails with EACCESS. The function now falls back to fcntl(). - Patch written by Michał Bednarski. - -- Issue #27014: Fix infinite recursion using typing.py. Thanks to Kalle Tuure! - -- Issue #14132: Fix urllib.request redirect handling when the target only has - a query string. Original fix by Ján Janech. - -- Issue #17214: The "urllib.request" module now percent-encodes non-ASCII - bytes found in redirect target URLs. Some servers send Location header - fields with non-ASCII bytes, but "http.client" requires the request target - to be ASCII-encodable, otherwise a UnicodeEncodeError is raised. Based on - patch by Christian Heimes. - -- Issue #26892: Honor debuglevel flag in urllib.request.HTTPHandler. Patch - contributed by Chi Hsuan Yen. - -- Issue #22274: In the subprocess module, allow stderr to be redirected to - stdout even when stdout is not redirected. Patch by Akira Li. - -- Issue #26807: mock_open 'files' no longer error on readline at end of file. - Patch from Yolanda Robla. - -- Issue #25745: Fixed leaking a userptr in curses panel destructor. - -- Issue #26977: Removed unnecessary, and ignored, call to sum of squares helper - in statistics.pvariance. - -- Issue #26881: The modulefinder module now supports extended opcode arguments. - -- Issue #23815: Fixed crashes related to directly created instances of types in - _tkinter and curses.panel modules. - -- Issue #17765: weakref.ref() no longer silently ignores keyword arguments. - Patch by Georg Brandl. - -- Issue #26873: xmlrpc now raises ResponseError on unsupported type tags - instead of silently return incorrect result. - -- Issue #26711: Fixed the comparison of plistlib.Data with other types. - -- Issue #24114: Fix an uninitialized variable in `ctypes.util`. - - The bug only occurs on SunOS when the ctypes implementation searches - for the `crle` program. Patch by Xiang Zhang. Tested on SunOS by - Kees Bos. - -- Issue #26864: In urllib.request, change the proxy bypass host checking - against no_proxy to be case-insensitive, and to not match unrelated host - names that happen to have a bypassed hostname as a suffix. Patch by Xiang - Zhang. - -- Issue #26634: recursive_repr() now sets __qualname__ of wrapper. Patch by - Xiang Zhang. - -- Issue #26804: urllib.request will prefer lower_case proxy environment - variables over UPPER_CASE or Mixed_Case ones. Patch contributed by Hans-Peter - Jansen. - -- Issue #26837: assertSequenceEqual() now correctly outputs non-stringified - differing items (like bytes in the -b mode). This affects assertListEqual() - and assertTupleEqual(). - -- Issue #26041: Remove "will be removed in Python 3.7" from deprecation - messages of platform.dist() and platform.linux_distribution(). - Patch by Kumaripaba Miyurusara Athukorala. - -- Issue #26822: itemgetter, attrgetter and methodcaller objects no longer - silently ignore keyword arguments. - -- Issue #26733: Disassembling a class now disassembles class and static methods. - Patch by Xiang Zhang. - -- Issue #26801: Fix error handling in :func:`shutil.get_terminal_size`, catch - :exc:`AttributeError` instead of :exc:`NameError`. Patch written by Emanuel - Barry. - -- Issue #24838: tarfile's ustar and gnu formats now correctly calculate name - and link field limits for multibyte character encodings like utf-8. - -- [Security] Issue #26657: Fix directory traversal vulnerability with - http.server on Windows. This fixes a regression that was introduced in - 3.3.4rc1 and 3.4.0rc1. Based on patch by Philipp Hagemeister. - -- Issue #26717: Stop encoding Latin-1-ized WSGI paths with UTF-8. Patch by - Anthony Sottile. - -- Issue #26735: Fix :func:`os.urandom` on Solaris 11.3 and newer when reading - more than 1,024 bytes: call ``getrandom()`` multiple times with a limit of - 1024 bytes per call. - -- Issue #16329: Add .webm to mimetypes.types_map. Patch by Giampaolo Rodola'. - -- Issue #13952: Add .csv to mimetypes.types_map. Patch by Geoff Wilson. - -- Issue #26709: Fixed Y2038 problem in loading binary PLists. - -- Issue #23735: Handle terminal resizing with Readline 6.3+ by installing our - own SIGWINCH handler. Patch by Eric Price. - -- Issue #26586: In http.server, respond with "413 Request header fields too - large" if there are too many header fields to parse, rather than killing - the connection and raising an unhandled exception. Patch by Xiang Zhang. - -- Issue #22854: Change BufferedReader.writable() and - BufferedWriter.readable() to always return False. - -- Issue #25195: Fix a regression in mock.MagicMock. _Call is a subclass of - tuple (changeset 3603bae63c13 only works for classes) so we need to - implement __ne__ ourselves. Patch by Andrew Plummer. - -- Issue #26644: Raise ValueError rather than SystemError when a negative - length is passed to SSLSocket.recv() or read(). - -- Issue #23804: Fix SSL recv(0) and read(0) methods to return zero bytes - instead of up to 1024. - -- Issue #26616: Fixed a bug in datetime.astimezone() method. - -- Issue #21925: :func:`warnings.formatwarning` now catches exceptions on - ``linecache.getline(...)`` to be able to log :exc:`ResourceWarning` emitted - late during the Python shutdown process. - -- Issue #24266: Ctrl+C during Readline history search now cancels the search - mode when compiled with Readline 7. - -- Issue #26560: Avoid potential ValueError in BaseHandler.start_response. - Initial patch by Peter Inglesby. - -- [Security] Issue #26313: ssl.py _load_windows_store_certs fails if windows - cert store is empty. Patch by Baji. - -- Issue #26569: Fix :func:`pyclbr.readmodule` and :func:`pyclbr.readmodule_ex` - to support importing packages. - -- Issue #26499: Account for remaining Content-Length in - HTTPResponse.readline() and read1(). Based on patch by Silent Ghost. - Also document that HTTPResponse now supports these methods. - -- Issue #25320: Handle sockets in directories unittest discovery is scanning. - Patch from Victor van den Elzen. - -- Issue #16181: cookiejar.http2time() now returns None if year is higher than - datetime.MAXYEAR. - -- Issue #26513: Fixes platform module detection of Windows Server - -- Issue #23718: Fixed parsing time in week 0 before Jan 1. Original patch by - Tamás Bence Gedai. - -- Issue #20589: Invoking Path.owner() and Path.group() on Windows now raise - NotImplementedError instead of ImportError. - -- Issue #26177: Fixed the keys() method for Canvas and Scrollbar widgets. - -- Issue #15068: Got rid of excessive buffering in the fileinput module. - The bufsize parameter is no longer used. - -- Issue #2202: Fix UnboundLocalError in - AbstractDigestAuthHandler.get_algorithm_impls. Initial patch by Mathieu - Dupuy. - -- Issue #25718: Fixed pickling and copying the accumulate() iterator with - total is None. - -- Issue #26475: Fixed debugging output for regular expressions with the (?x) - flag. - -- Issue #26457: Fixed the subnets() methods in IP network classes for the case - when resulting prefix length is equal to maximal prefix length. - Based on patch by Xiang Zhang. - -- Issue #26385: Remove the file if the internal open() call in - NamedTemporaryFile() fails. Patch by Silent Ghost. - -- Issue #26402: Fix XML-RPC client to retry when the server shuts down a - persistent connection. This was a regression related to the new - http.client.RemoteDisconnected exception in 3.5.0a4. - -- Issue #25913: Leading ``<~`` is optional now in base64.a85decode() with - adobe=True. Patch by Swati Jaiswal. - -- Issue #26186: Remove an invalid type check in importlib.util.LazyLoader. - -- Issue #26367: importlib.__import__() raises SystemError like - builtins.__import__() when ``level`` is specified but without an accompanying - package specified. - -- Issue #26309: In the "socketserver" module, shut down the request (closing - the connected socket) when verify_request() returns false. Patch by Aviv - Palivoda. - -- [Security] Issue #25939: On Windows open the cert store readonly in - ssl.enum_certificates. - -- Issue #25995: os.walk() no longer uses FDs proportional to the tree depth. - -- Issue #26117: The os.scandir() iterator now closes file descriptor not only - when the iteration is finished, but when it was failed with error. - -- Issue #25911: Restored support of bytes paths in os.walk() on Windows. - -- Issue #26045: Add UTF-8 suggestion to error message when posting a - non-Latin-1 string with http.client. - -- Issue #12923: Reset FancyURLopener's redirect counter even if there is an - exception. Based on patches by Brian Brazil and Daniel Rocco. - -- Issue #25945: Fixed a crash when unpickle the functools.partial object with - wrong state. Fixed a leak in failed functools.partial constructor. - "args" and "keywords" attributes of functools.partial have now always types - tuple and dict correspondingly. - -- Issue #26202: copy.deepcopy() now correctly copies range() objects with - non-atomic attributes. - -- Issue #23076: Path.glob() now raises a ValueError if it's called with an - invalid pattern. Patch by Thomas Nyberg. - -- Issue #19883: Fixed possible integer overflows in zipimport. - -- Issue #26227: On Windows, getnameinfo(), gethostbyaddr() and - gethostbyname_ex() functions of the socket module now decode the hostname - from the ANSI code page rather than UTF-8. - -- Issue #26147: xmlrpc now works with strings not encodable with used - non-UTF-8 encoding. - -- Issue #25935: Garbage collector now breaks reference loops with OrderedDict. - -- Issue #16620: Fixed AttributeError in msilib.Directory.glob(). - -- Issue #26013: Added compatibility with broken protocol 2 pickles created - in old Python 3 versions (3.4.3 and lower). - -- Issue #25850: Use cross-compilation by default for 64-bit Windows. - -- Issue #17633: Improve zipimport's support for namespace packages. - -- Issue #24705: Fix sysconfig._parse_makefile not expanding ${} vars - appearing before $() vars. - -- Issue #22138: Fix mock.patch behavior when patching descriptors. Restore - original values after patching. Patch contributed by Sean McCully. - -- Issue #25672: In the ssl module, enable the SSL_MODE_RELEASE_BUFFERS mode - option if it is safe to do so. - -- Issue #26012: Don't traverse into symlinks for ``**`` pattern in - pathlib.Path.[r]glob(). - -- Issue #24120: Ignore PermissionError when traversing a tree with - pathlib.Path.[r]glob(). Patch by Ulrich Petri. - -- Issue #25447: fileinput now uses sys.stdin as-is if it does not have a - buffer attribute (restores backward compatibility). - -- Issue #25447: Copying the lru_cache() wrapper object now always works, - independedly from the type of the wrapped object (by returning the original - object unchanged). - -- Issue #24103: Fixed possible use after free in ElementTree.XMLPullParser. - -- Issue #25860: os.fwalk() no longer skips remaining directories when error - occurs. Original patch by Samson Lee. - -- Issue #25914: Fixed and simplified OrderedDict.__sizeof__. - -- Issue #25902: Fixed various refcount issues in ElementTree iteration. - -- Issue #25717: Restore the previous behaviour of tolerating most fstat() - errors when opening files. This was a regression in 3.5a1, and stopped - anonymous temporary files from working in special cases. - -- Issue #24903: Fix regression in number of arguments compileall accepts when - '-d' is specified. The check on the number of arguments has been dropped - completely as it never worked correctly anyway. - -- Issue #25764: In the subprocess module, preserve any exception caused by - fork() failure when preexec_fn is used. - -- Issue #6478: _strptime's regexp cache now is reset after changing timezone - with time.tzset(). - -- Issue #14285: When executing a package with the "python -m package" option, - and package initialization fails, a proper traceback is now reported. The - "runpy" module now lets exceptions from package initialization pass back to - the caller, rather than raising ImportError. - -- Issue #19771: Also in runpy and the "-m" option, omit the irrelevant - message ". . . is a package and cannot be directly executed" if the package - could not even be initialized (e.g. due to a bad ``*.pyc`` file). - -- Issue #25177: Fixed problem with the mean of very small and very large - numbers. As a side effect, statistics.mean and statistics.variance should - be significantly faster. - -- Issue #25718: Fixed copying object with state with boolean value is false. - -- Issue #10131: Fixed deep copying of minidom documents. Based on patch - by Marian Ganisin. - -- Issue #25725: Fixed a reference leak in pickle.loads() when unpickling - invalid data including tuple instructions. - -- Issue #25663: In the Readline completer, avoid listing duplicate global - names, and search the global namespace before searching builtins. - -- Issue #25688: Fixed file leak in ElementTree.iterparse() raising an error. - -- Issue #23914: Fixed SystemError raised by unpickler on broken pickle data. - -- Issue #25691: Fixed crash on deleting ElementTree.Element attributes. - -- Issue #25624: ZipFile now always writes a ZIP_STORED header for directory - entries. Patch by Dingyuan Wang. - -- Skip getaddrinfo if host is already resolved. - Patch by A. Jesse Jiryu Davis. - -- Issue #26050: Add asyncio.StreamReader.readuntil() method. - Patch by Марк Коренберг. - -- Issue #25924: Avoid unnecessary serialization of getaddrinfo(3) calls on - OS X versions 10.5 or higher. Original patch by A. Jesse Jiryu Davis. - -- Issue #26406: Avoid unnecessary serialization of getaddrinfo(3) calls on - current versions of OpenBSD and NetBSD. Patch by A. Jesse Jiryu Davis. - -- Issue #26848: Fix asyncio/subprocess.communicate() to handle empty input. - Patch by Jack O'Connor. - -- Issue #27040: Add loop.get_exception_handler method - -- Issue #27041: asyncio: Add loop.create_future method - -- Issue #27223: asyncio: Fix _read_ready and _write_ready to respect - _conn_lost. - Patch by Łukasz Langa. - -- Issue #22970: asyncio: Fix inconsistency cancelling Condition.wait. - Patch by David Coles. - -IDLE ----- - -- Issue #5124: Paste with text selected now replaces the selection on X11. - This matches how paste works on Windows, Mac, most modern Linux apps, - and ttk widgets. Original patch by Serhiy Storchaka. - -- Issue #24759: Make clear in idlelib.idle_test.__init__ that the directory - is a private implementation of test.test_idle and tool for maintainers. - -- Issue #27196: Stop 'ThemeChanged' warnings when running IDLE tests. - These persisted after other warnings were suppressed in #20567. - Apply Serhiy Storchaka's update_idletasks solution to four test files. - Record this additional advice in idle_test/README.txt - -- Issue #20567: Revise idle_test/README.txt with advice about avoiding - tk warning messages from tests. Apply advice to several IDLE tests. - -- Issue #27117: Make colorizer htest and turtledemo work with dark themes. - Move code for configuring text widget colors to a new function. - -- Issue #26673: When tk reports font size as 0, change to size 10. - Such fonts on Linux prevented the configuration dialog from opening. - -- Issue #21939: Add test for IDLE's percolator. - Original patch by Saimadhav Heblikar. - -- Issue #21676: Add test for IDLE's replace dialog. - Original patch by Saimadhav Heblikar. - -- Issue #18410: Add test for IDLE's search dialog. - Original patch by Westley Martínez. - -- Issue #21703: Add test for IDLE's undo delegator. - Original patch by Saimadhav Heblikar . - -- Issue #27044: Add ConfigDialog.remove_var_callbacks to stop memory leaks. - -- Issue #23977: Add more asserts to test_delegator. - -- Issue #20640: Add tests for idlelib.configHelpSourceEdit. - Patch by Saimadhav Heblikar. - -- In the 'IDLE-console differences' section of the IDLE doc, clarify - how running with IDLE affects sys.modules and the standard streams. - -- Issue #25507: fix incorrect change in IOBinding that prevented printing. - Augment IOBinding htest to include all major IOBinding functions. - -- Issue #25905: Revert unwanted conversion of ' to ’ RIGHT SINGLE QUOTATION - MARK in README.txt and open this and NEWS.txt with 'ascii'. - Re-encode CREDITS.txt to utf-8 and open it with 'utf-8'. - -Documentation -------------- - -- Issue #19489: Moved the search box from the sidebar to the header and footer - of each page. Patch by Ammar Askar. - -- Issue #24136: Document the new PEP 448 unpacking syntax of 3.5. - -- Issue #26736: Used HTTPS for external links in the documentation if possible. - -- Issue #6953: Rework the Readline module documentation to group related - functions together, and add more details such as what underlying Readline - functions and variables are accessed. - -- Issue #23606: Adds note to ctypes documentation regarding cdll.msvcrt. - -- Issue #25500: Fix documentation to not claim that __import__ is searched for - in the global scope. - -- Issue #26014: Update 3.x packaging documentation: - * "See also" links to the new docs are now provided in the legacy pages - * links to setuptools documentation have been updated - -Tests ------ - -- Issue #21916: Added tests for the turtle module. Patch by ingrid, - Gregory Loyse and Jelle Zijlstra. - -- Issue #26523: The multiprocessing thread pool (multiprocessing.dummy.Pool) - was untested. - -- Issue #26015: Added new tests for pickling iterators of mutable sequences. - -- Issue #26325: Added test.support.check_no_resource_warning() to check that - no ResourceWarning is emitted. - -- Issue #25940: Changed test_ssl to use self-signed.pythontest.net. This - avoids relying on svn.python.org, which recently changed root certificate. - -- Issue #25616: Tests for OrderedDict are extracted from test_collections - into separate file test_ordered_dict. - -- Issue #26583: Skip test_timestamp_overflow in test_import if bytecode - files cannot be written. - -Build ------ - -- Issue #26884: Fix linking extension modules for cross builds. - Patch by Xavier de Gaye. - -- Issue #22359: Disable the rules for running _freeze_importlib and pgen when - cross-compiling. The output of these programs is normally saved with the - source code anyway, and is still regenerated when doing a native build. - Patch by Xavier de Gaye. - -- Issue #27229: Fix the cross-compiling pgen rule for in-tree builds. Patch - by Xavier de Gaye. - -- Issue #21668: Link audioop, _datetime, _ctypes_test modules to libm, - except on Mac OS X. Patch written by Xavier de Gaye. - -- Issue #25702: A --with-lto configure option has been added that will - enable link time optimizations at build time during a make profile-opt. - Some compilers and toolchains are known to not produce stable code when - using LTO, be sure to test things thoroughly before relying on it. - It can provide a few % speed up over profile-opt alone. - -- Issue #26624: Adds validation of ucrtbase[d].dll version with warning - for old versions. - -- Issue #17603: Avoid error about nonexistant fileblocks.o file by using a - lower-level check for st_blocks in struct stat. - -- Issue #26079: Fixing the build output folder for tix-8.4.3.6. Patch by - Bjoern Thiel. - -- Issue #26465: Update Windows builds to use OpenSSL 1.0.2g. - -- Issue #24421: Compile Modules/_math.c once, before building extensions. - Previously it could fail to compile properly if the math and cmath builds - were concurrent. - -- Issue #25348: Added ``--pgo`` and ``--pgo-job`` arguments to - ``PCbuild\build.bat`` for building with Profile-Guided Optimization. The - old ``PCbuild\build_pgo.bat`` script is now deprecated, and simply calls - ``PCbuild\build.bat --pgo %*``. - -- Issue #25827: Add support for building with ICC to ``configure``, including - a new ``--with-icc`` flag. - -- Issue #25696: Fix installation of Python on UNIX with make -j9. - -- Issue #26930: Update OS X 10.5+ 32-bit-only installer to build - and link with OpenSSL 1.0.2h. - -- Issue #26268: Update Windows builds to use OpenSSL 1.0.2f. - -- Issue #25136: Support Apple Xcode 7's new textual SDK stub libraries. - -- Issue #24324: Do not enable unreachable code warnings when using - gcc as the option does not work correctly in older versions of gcc - and has been silently removed as of gcc-4.5. - -Windows -------- - -- Issue #27053: Updates make_zip.py to correctly generate library ZIP file. - -- Issue #26268: Update the prepare_ssl.py script to handle OpenSSL releases - that don't include the contents of the include directory (that is, 1.0.2e - and later). - -- Issue #26071: bdist_wininst created binaries fail to start and find - 32bit Python - -- Issue #26073: Update the list of magic numbers in launcher - -- Issue #26065: Excludes venv from library when generating embeddable - distro. - -Tools/Demos ------------ - -- Issue #26799: Fix python-gdb.py: don't get C types once when the Python code - is loaded, but get C types on demand. The C types can change if - python-gdb.py is loaded before the Python executable. Patch written by Thomas - Ilsche. - -- Issue #26271: Fix the Freeze tool to properly use flags passed through - configure. Patch by Daniel Shaulov. - -- Issue #26489: Add dictionary unpacking support to Tools/parser/unparse.py. - Patch by Guo Ci Teo. - -- Issue #26316: Fix variable name typo in Argument Clinic. - -Misc ----- - -- Issue #17500, and https://github.com/python/pythondotorg/issues/945: Remove - unused and outdated icons. - - -What's New in Python 3.5.1 final? -================================= - -Release date: 2015-12-06 - -Core and Builtins ------------------ - -- Issue #25709: Fixed problem with in-place string concatenation and - utf-8 cache. - -Windows -------- - -- Issue #25715: Python 3.5.1 installer shows wrong upgrade path and incorrect - logic for launcher detection. - - -What's New in Python 3.5.1 release candidate 1? -=============================================== - -Release date: 2015-11-22 - -Core and Builtins ------------------ - -- Issue #25630: Fix a possible segfault during argument parsing in functions - that accept filesystem paths. - -- Issue #23564: Fixed a partially broken sanity check in the _posixsubprocess - internals regarding how fds_to_pass were passed to the child. The bug had - no actual impact as subprocess.py already avoided it. - -- Issue #25388: Fixed tokenizer crash when processing undecodable source code - with a null byte. - -- Issue #25462: The hash of the key now is calculated only once in most - operations in C implementation of OrderedDict. - -- Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now - rejects builtin types with not defined __new__. - -- Issue #25555: Fix parser and AST: fill lineno and col_offset of "arg" node - when compiling AST from Python objects. - -- Issue #24802: Avoid buffer overreads when int(), float(), compile(), exec() - and eval() are passed bytes-like objects. These objects are not - necessarily terminated by a null byte, but the functions assumed they were. - -- Issue #24726: Fixed a crash and leaking NULL in repr() of OrderedDict that - was mutated by direct calls of dict methods. - -- Issue #25449: Iterating OrderedDict with keys with unstable hash now raises - KeyError in C implementations as well as in Python implementation. - -- Issue #25395: Fixed crash when highly nested OrderedDict structures were - garbage collected. - -- Issue #25274: sys.setrecursionlimit() now raises a RecursionError if the new - recursion limit is too low depending at the current recursion depth. Modify - also the "lower-water mark" formula to make it monotonic. This mark is used - to decide when the overflowed flag of the thread state is reset. - -- Issue #24402: Fix input() to prompt to the redirected stdout when - sys.stdout.fileno() fails. - -- Issue #24806: Prevent builtin types that are not allowed to be subclassed from - being subclassed through multiple inheritance. - -- Issue #24848: Fixed a number of bugs in UTF-7 decoding of misformed data. - -- Issue #25280: Import trace messages emitted in verbose (-v) mode are no - longer formatted twice. - -- Issue #25003: On Solaris 11.3 or newer, os.urandom() now uses the - getrandom() function instead of the getentropy() function. The getentropy() - function is blocking to generate very good quality entropy, os.urandom() - doesn't need such high-quality entropy. - -- Issue #25182: The stdprinter (used as sys.stderr before the io module is - imported at startup) now uses the backslashreplace error handler. - -- Issue #25131: Make the line number and column offset of set/dict literals and - comprehensions correspond to the opening brace. - -- Issue #25150: Hide the private _Py_atomic_xxx symbols from the public - Python.h header to fix a compilation error with OpenMP. PyThreadState_GET() - becomes an alias to PyThreadState_Get() to avoid ABI incompatibilies. - -Library -------- - -- Issue #25626: Change three zlib functions to accept sizes that fit in - Py_ssize_t, but internally cap those sizes to UINT_MAX. This resolves a - regression in 3.5 where GzipFile.read() failed to read chunks larger than 2 - or 4 GiB. The change affects the zlib.Decompress.decompress() max_length - parameter, the zlib.decompress() bufsize parameter, and the - zlib.Decompress.flush() length parameter. - -- Issue #25583: Avoid incorrect errors raised by os.makedirs(exist_ok=True) - when the OS gives priority to errors such as EACCES over EEXIST. - -- Issue #25593: Change semantics of EventLoop.stop() in asyncio. - -- Issue #6973: When we know a subprocess.Popen process has died, do - not allow the send_signal(), terminate(), or kill() methods to do - anything as they could potentially signal a different process. - -- Issue #25590: In the Readline completer, only call getattr() once per - attribute. - -- Issue #25498: Fix a crash when garbage-collecting ctypes objects created - by wrapping a memoryview. This was a regression made in 3.5a1. Based - on patch by Eryksun. - -- Issue #25584: Added "escape" to the __all__ list in the glob module. - -- Issue #25584: Fixed recursive glob() with patterns starting with ``**``. - -- Issue #25446: Fix regression in smtplib's AUTH LOGIN support. - -- Issue #18010: Fix the pydoc web server's module search function to handle - exceptions from importing packages. - -- Issue #25554: Got rid of circular references in regular expression parsing. - -- Issue #25510: fileinput.FileInput.readline() now returns b'' instead of '' - at the end if the FileInput was opened with binary mode. - Patch by Ryosuke Ito. - -- Issue #25503: Fixed inspect.getdoc() for inherited docstrings of properties. - Original patch by John Mark Vandenberg. - -- Issue #25515: Always use os.urandom as a source of randomness in uuid.uuid4. - -- Issue #21827: Fixed textwrap.dedent() for the case when largest common - whitespace is a substring of smallest leading whitespace. - Based on patch by Robert Li. - -- Issue #25447: The lru_cache() wrapper objects now can be copied and pickled - (by returning the original object unchanged). - -- Issue #25390: typing: Don't crash on Union[str, Pattern]. - -- Issue #25441: asyncio: Raise error from drain() when socket is closed. - -- Issue #25410: Cleaned up and fixed minor bugs in C implementation of - OrderedDict. - -- Issue #25411: Improved Unicode support in SMTPHandler through better use of - the email package. Thanks to user simon04 for the patch. - -- Issue #25407: Remove mentions of the formatter module being removed in - Python 3.6. - -- Issue #25406: Fixed a bug in C implementation of OrderedDict.move_to_end() - that caused segmentation fault or hang in iterating after moving several - items to the start of ordered dict. - -- Issue #25364: zipfile now works in threads disabled builds. - -- Issue #25328: smtpd's SMTPChannel now correctly raises a ValueError if both - decode_data and enable_SMTPUTF8 are set to true. - -- Issue #25316: distutils raises OSError instead of DistutilsPlatformError - when MSVC is not installed. - -- Issue #25380: Fixed protocol for the STACK_GLOBAL opcode in - pickletools.opcodes. - -- Issue #23972: Updates asyncio datagram create method allowing reuseport - and reuseaddr socket options to be set prior to binding the socket. - Mirroring the existing asyncio create_server method the reuseaddr option - for datagram sockets defaults to True if the O/S is 'posix' (except if the - platform is Cygwin). Patch by Chris Laws. - -- Issue #25304: Add asyncio.run_coroutine_threadsafe(). This lets you - submit a coroutine to a loop from another thread, returning a - concurrent.futures.Future. By Vincent Michel. - -- Issue #25232: Fix CGIRequestHandler to split the query from the URL at the - first question mark (?) rather than the last. Patch from Xiang Zhang. - -- Issue #24657: Prevent CGIRequestHandler from collapsing slashes in the - query part of the URL as if it were a path. Patch from Xiang Zhang. - -- Issue #24483: C implementation of functools.lru_cache() now calculates key's - hash only once. - -- Issue #22958: Constructor and update method of weakref.WeakValueDictionary - now accept the self and the dict keyword arguments. - -- Issue #22609: Constructor of collections.UserDict now accepts the self keyword - argument. - -- Issue #25111: Fixed comparison of traceback.FrameSummary. - -- Issue #25262: Added support for BINBYTES8 opcode in Python implementation of - unpickler. Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8 - opcodes no longer silently ignored on 32-bit platforms in C implementation. - -- Issue #25034: Fix string.Formatter problem with auto-numbering and - nested format_specs. Patch by Anthon van der Neut. - -- Issue #25233: Rewrite the guts of asyncio.Queue and - asyncio.Semaphore to be more understandable and correct. - -- Issue #25203: Failed readline.set_completer_delims() no longer left the - module in inconsistent state. - -- Issue #23600: Default implementation of tzinfo.fromutc() was returning - wrong results in some cases. - -- Issue #23329: Allow the ssl module to be built with older versions of - LibreSSL. - -- Prevent overflow in _Unpickler_Read. - -- Issue #25047: The XML encoding declaration written by Element Tree now - respects the letter case given by the user. This restores the ability to - write encoding names in uppercase like "UTF-8", which worked in Python 2. - -- Issue #25135: Make deque_clear() safer by emptying the deque before clearing. - This helps avoid possible reentrancy issues. - -- Issue #19143: platform module now reads Windows version from kernel32.dll to - avoid compatibility shims. - -- Issue #25092: Fix datetime.strftime() failure when errno was already set to - EINVAL. - -- Issue #23517: Fix rounding in fromtimestamp() and utcfromtimestamp() methods - of datetime.datetime: microseconds are now rounded to nearest with ties - going to nearest even integer (ROUND_HALF_EVEN), instead of being rounding - towards minus infinity (ROUND_FLOOR). It's important that these methods use - the same rounding mode than datetime.timedelta to keep the property: - (datetime(1970,1,1) + timedelta(seconds=t)) == datetime.utcfromtimestamp(t). - It also the rounding mode used by round(float) for example. - -- Issue #25155: Fix datetime.datetime.now() and datetime.datetime.utcnow() on - Windows to support date after year 2038. It was a regression introduced in - Python 3.5.0. - -- Issue #25108: Omitted internal frames in traceback functions print_stack(), - format_stack(), and extract_stack() called without arguments. - -- Issue #25118: Fix a regression of Python 3.5.0 in os.waitpid() on Windows. - -- Issue #24684: socket.socket.getaddrinfo() now calls - PyUnicode_AsEncodedString() instead of calling the encode() method of the - host, to handle correctly custom string with an encode() method which doesn't - return a byte string. The encoder of the IDNA codec is now called directly - instead of calling the encode() method of the string. - -- Issue #25060: Correctly compute stack usage of the BUILD_MAP opcode. - -- Issue #24857: Comparing call_args to a long sequence now correctly returns a - boolean result instead of raising an exception. Patch by A Kaptur. - -- Issue #23144: Make sure that HTMLParser.feed() returns all the data, even - when convert_charrefs is True. - -- Issue #24982: shutil.make_archive() with the "zip" format now adds entries - for directories (including empty directories) in ZIP file. - -- Issue #25019: Fixed a crash caused by setting non-string key of expat parser. - Based on patch by John Leitch. - -- Issue #16180: Exit pdb if file has syntax error, instead of trapping user - in an infinite loop. Patch by Xavier de Gaye. - -- Issue #24891: Fix a race condition at Python startup if the file descriptor - of stdin (0), stdout (1) or stderr (2) is closed while Python is creating - sys.stdin, sys.stdout and sys.stderr objects. These attributes are now set - to None if the creation of the object failed, instead of raising an OSError - exception. Initial patch written by Marco Paolini. - -- Issue #24992: Fix error handling and a race condition (related to garbage - collection) in collections.OrderedDict constructor. - -- Issue #24881: Fixed setting binary mode in Python implementation of FileIO - on Windows and Cygwin. Patch from Akira Li. - -- Issue #25578: Fix (another) memory leak in SSLSocket.getpeercer(). - -- Issue #25530: Disable the vulnerable SSLv3 protocol by default when creating - ssl.SSLContext. - -- Issue #25569: Fix memory leak in SSLSocket.getpeercert(). - -- Issue #25471: Sockets returned from accept() shouldn't appear to be - nonblocking. - -- Issue #25319: When threading.Event is reinitialized, the underlying condition - should use a regular lock rather than a recursive lock. - -- Issue #21112: Fix regression in unittest.expectedFailure on subclasses. - Patch from Berker Peksag. - -- Issue #24764: cgi.FieldStorage.read_multi() now ignores the Content-Length - header in part headers. Patch written by Peter Landry and reviewed by Pierre - Quentel. - -- Issue #24913: Fix overrun error in deque.index(). - Found by John Leitch and Bryce Darling. - -- Issue #24774: Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu. - -- Issue #21159: Improve message in configparser.InterpolationMissingOptionError. - Patch from Łukasz Langa. - -- Issue #20362: Honour TestCase.longMessage correctly in assertRegex. - Patch from Ilia Kurenkov. - -- Issue #23572: Fixed functools.singledispatch on classes with falsy - metaclasses. Patch by Ethan Furman. - -- asyncio: ensure_future() now accepts awaitable objects. - -IDLE ----- - -- Issue #15348: Stop the debugger engine (normally in a user process) - before closing the debugger window (running in the IDLE process). - This prevents the RuntimeErrors that were being caught and ignored. - -- Issue #24455: Prevent IDLE from hanging when a) closing the shell while the - debugger is active (15347); b) closing the debugger with the [X] button - (15348); and c) activating the debugger when already active (24455). - The patch by Mark Roseman does this by making two changes. - 1. Suspend and resume the gui.interaction method with the tcl vwait - mechanism intended for this purpose (instead of root.mainloop & .quit). - 2. In gui.run, allow any existing interaction to terminate first. - -- Change 'The program' to 'Your program' in an IDLE 'kill program?' message - to make it clearer that the program referred to is the currently running - user program, not IDLE itself. - -- Issue #24750: Improve the appearance of the IDLE editor window status bar. - Patch by Mark Roseman. - -- Issue #25313: Change the handling of new built-in text color themes to better - address the compatibility problem introduced by the addition of IDLE Dark. - Consistently use the revised idleConf.CurrentTheme everywhere in idlelib. - -- Issue #24782: Extension configuration is now a tab in the IDLE Preferences - dialog rather than a separate dialog. The former tabs are now a sorted - list. Patch by Mark Roseman. - -- Issue #22726: Re-activate the config dialog help button with some content - about the other buttons and the new IDLE Dark theme. - -- Issue #24820: IDLE now has an 'IDLE Dark' built-in text color theme. - It is more or less IDLE Classic inverted, with a cobalt blue background. - Strings, comments, keywords, ... are still green, red, orange, ... . - To use it with IDLEs released before November 2015, hit the - 'Save as New Custom Theme' button and enter a new name, - such as 'Custom Dark'. The custom theme will work with any IDLE - release, and can be modified. - -- Issue #25224: README.txt is now an idlelib index for IDLE developers and - curious users. The previous user content is now in the IDLE doc chapter. - 'IDLE' now means 'Integrated Development and Learning Environment'. - -- Issue #24820: Users can now set breakpoint colors in - Settings -> Custom Highlighting. Original patch by Mark Roseman. - -- Issue #24972: Inactive selection background now matches active selection - background, as configured by users, on all systems. Found items are now - always highlighted on Windows. Initial patch by Mark Roseman. - -- Issue #24570: Idle: make calltip and completion boxes appear on Macs - affected by a tk regression. Initial patch by Mark Roseman. - -- Issue #24988: Idle ScrolledList context menus (used in debugger) - now work on Mac Aqua. Patch by Mark Roseman. - -- Issue #24801: Make right-click for context menu work on Mac Aqua. - Patch by Mark Roseman. - -- Issue #25173: Associate tkinter messageboxes with a specific widget. - For Mac OSX, make them a 'sheet'. Patch by Mark Roseman. - -- Issue #25198: Enhance the initial html viewer now used for Idle Help. - * Properly indent fixed-pitch text (patch by Mark Roseman). - * Give code snippet a very Sphinx-like light blueish-gray background. - * Re-use initial width and height set by users for shell and editor. - * When the Table of Contents (TOC) menu is used, put the section header - at the top of the screen. - -- Issue #25225: Condense and rewrite Idle doc section on text colors. - -- Issue #21995: Explain some differences between IDLE and console Python. - -- Issue #22820: Explain need for *print* when running file from Idle editor. - -- Issue #25224: Doc: augment Idle feature list and no-subprocess section. - -- Issue #25219: Update doc for Idle command line options. - Some were missing and notes were not correct. - -- Issue #24861: Most of idlelib is private and subject to change. - Use idleib.idle.* to start Idle. See idlelib.__init__.__doc__. - -- Issue #25199: Idle: add synchronization comments for future maintainers. - -- Issue #16893: Replace help.txt with help.html for Idle doc display. - The new idlelib/help.html is rstripped Doc/build/html/library/idle.html. - It looks better than help.txt and will better document Idle as released. - The tkinter html viewer that works for this file was written by Mark Roseman. - The now unused EditorWindow.HelpDialog class and helt.txt file are deprecated. - -- Issue #24199: Deprecate unused idlelib.idlever with possible removal in 3.6. - -- Issue #24790: Remove extraneous code (which also create 2 & 3 conflicts). - -Documentation -------------- - -- Issue #22558: Add remaining doc links to source code for Python-coded modules. - Patch by Yoni Lavi. - -- Issue #12067: Rewrite Comparisons section in the Expressions chapter of the - language reference. Some of the details of comparing mixed types were - incorrect or ambiguous. NotImplemented is only relevant at a lower level - than the Expressions chapter. Added details of comparing range() objects, - and default behaviour and consistency suggestions for user-defined classes. - Patch from Andy Maier. - -- Issue #24952: Clarify the default size argument of stack_size() in - the "threading" and "_thread" modules. Patch from Mattip. - -- Issue #23725: Overhaul tempfile docs. Note deprecated status of mktemp. - Patch from Zbigniew Jędrzejewski-Szmek. - -- Issue #24808: Update the types of some PyTypeObject fields. Patch by - Joseph Weston. - -- Issue #22812: Fix unittest discovery examples. - Patch from Pam McA'Nulty. - -Tests ------ - -- Issue #25449: Added tests for OrderedDict subclasses. - -- Issue #25099: Make test_compileall not fail when an entry on sys.path cannot - be written to (commonly seen in administrative installs on Windows). - -- Issue #23919: Prevents assert dialogs appearing in the test suite. - -- ``PCbuild\rt.bat`` now accepts an unlimited number of arguments to pass along - to regrtest.py. Previously there was a limit of 9. - -Build ------ - -- Issue #24915: Add LLVM support for PGO builds and use the test suite to - generate the profile data. Initial patch by Alecsandru Patrascu of Intel. - -- Issue #24910: Windows MSIs now have unique display names. - -- Issue #24986: It is now possible to build Python on Windows without errors - when external libraries are not available. - -Windows -------- - -- Issue #25450: Updates shortcuts to start Python in installation directory. - -- Issue #25164: Changes default all-users install directory to match per-user - directory. - -- Issue #25143: Improves installer error messages for unsupported platforms. - -- Issue #25163: Display correct directory in installer when using non-default - settings. - -- Issue #25361: Disables use of SSE2 instructions in Windows 32-bit build - -- Issue #25089: Adds logging to installer for case where launcher is not - selected on upgrade. - -- Issue #25165: Windows uninstallation should not remove launcher if other - versions remain - -- Issue #25112: py.exe launcher is missing icons - -- Issue #25102: Windows installer does not precompile for -O or -OO. - -- Issue #25081: Makes Back button in installer go back to upgrade page when - upgrading. - -- Issue #25091: Increases font size of the installer. - -- Issue #25126: Clarifies that the non-web installer will download some - components. - -- Issue #25213: Restores requestedExecutionLevel to manifest to disable - UAC virtualization. - -- Issue #25022: Removed very outdated PC/example_nt/ directory. - -Tools/Demos ------------ - -- Issue #25440: Fix output of python-config --extension-suffix. - - -What's New in Python 3.5.0 final? -================================= - -Release date: 2015-09-13 - -Build ------ - -- Issue #25071: Windows installer should not require TargetDir - parameter when installing quietly. - - -What's New in Python 3.5.0 release candidate 4? -=============================================== - -Release date: 2015-09-09 - -Library -------- - -- Issue #25029: Fixes MemoryError in test_strptime. - -Build ------ - -- Issue #25027: Reverts partial-static build options and adds - vcruntime140.dll to Windows installation. - - -What's New in Python 3.5.0 release candidate 3? -=============================================== - -Release date: 2015-09-07 - -Core and Builtins ------------------ - -- Issue #24305: Prevent import subsystem stack frames from being counted - by the warnings.warn(stacklevel=) parameter. - -- Issue #24912: Prevent __class__ assignment to immutable built-in objects. - -- Issue #24975: Fix AST compilation for PEP 448 syntax. - -Library -------- - -- Issue #24917: time_strftime() buffer over-read. - -- Issue #24748: To resolve a compatibility problem found with py2exe and - pywin32, imp.load_dynamic() once again ignores previously loaded modules - to support Python modules replacing themselves with extension modules. - Patch by Petr Viktorin. - -- Issue #24635: Fixed a bug in typing.py where isinstance([], typing.Iterable) - would return True once, then False on subsequent calls. - -- Issue #24989: Fixed buffer overread in BytesIO.readline() if a position is - set beyond size. Based on patch by John Leitch. - -- Issue #24913: Fix overrun error in deque.index(). - Found by John Leitch and Bryce Darling. - - -What's New in Python 3.5.0 release candidate 2? -=============================================== - -Release date: 2015-08-25 - -Core and Builtins ------------------ - -- Issue #24769: Interpreter now starts properly when dynamic loading - is disabled. Patch by Petr Viktorin. - -- Issue #21167: NAN operations are now handled correctly when python is - compiled with ICC even if -fp-model strict is not specified. - -- Issue #24492: A "package" lacking a __name__ attribute when trying to perform - a ``from .. import ...`` statement will trigger an ImportError instead of an - AttributeError. - -Library -------- - -- Issue #24847: Removes vcruntime140.dll dependency from Tcl/Tk. - -- Issue #24839: platform._syscmd_ver raises DeprecationWarning - -- Issue #24867: Fix Task.get_stack() for 'async def' coroutines - - -What's New in Python 3.5.0 release candidate 1? -=============================================== - -Release date: 2015-08-09 - -Core and Builtins ------------------ - -- Issue #24667: Resize odict in all cases that the underlying dict resizes. - -Library -------- - -- Issue #24824: Signatures of codecs.encode() and codecs.decode() now are - compatible with pydoc. - -- Issue #24634: Importing uuid should not try to load libc on Windows - -- Issue #24798: _msvccompiler.py doesn't properly support manifests - -- Issue #4395: Better testing and documentation of binary operators. - Patch by Martin Panter. - -- Issue #23973: Update typing.py from GitHub repo. - -- Issue #23004: mock_open() now reads binary data correctly when the type of - read_data is bytes. Initial patch by Aaron Hill. - -- Issue #23888: Handle fractional time in cookie expiry. Patch by ssh. - -- Issue #23652: Make it possible to compile the select module against the - libc headers from the Linux Standard Base, which do not include some - EPOLL macros. Patch by Matt Frank. - -- Issue #22932: Fix timezones in email.utils.formatdate. - Patch from Dmitry Shachnev. - -- Issue #23779: imaplib raises TypeError if authenticator tries to abort. - Patch from Craig Holmquist. - -- Issue #23319: Fix ctypes.BigEndianStructure, swap correctly bytes. Patch - written by Matthieu Gautier. - -- Issue #23254: Document how to close the TCPServer listening socket. - Patch from Martin Panter. - -- Issue #19450: Update Windows and OS X installer builds to use SQLite 3.8.11. - -- Issue #17527: Add PATCH to wsgiref.validator. Patch from Luca Sbardella. - -- Issue #24791: Fix grammar regression for call syntax: 'g(\*a or b)'. - -IDLE ----- - -- Issue #23672: Allow Idle to edit and run files with astral chars in name. - Patch by Mohd Sanad Zaki Rizvi. - -- Issue #24745: Idle editor default font. Switch from Courier to - platform-sensitive TkFixedFont. This should not affect current customized - font selections. If there is a problem, edit $HOME/.idlerc/config-main.cfg - and remove 'fontxxx' entries from [Editor Window]. Patch by Mark Roseman. - -- Issue #21192: Idle editor. When a file is run, put its name in the restart bar. - Do not print false prompts. Original patch by Adnan Umer. - -- Issue #13884: Idle menus. Remove tearoff lines. Patch by Roger Serwy. - -Documentation -------------- - -- Issue #24129: Clarify the reference documentation for name resolution. - This includes removing the assumption that readers will be familiar with the - name resolution scheme Python used prior to the introduction of lexical - scoping for function namespaces. Patch by Ivan Levkivskyi. - -- Issue #20769: Improve reload() docs. Patch by Dorian Pula. - -- Issue #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan. - -- Issue #24729: Correct IO tutorial to match implementation regarding - encoding parameter to open function. - -Tests ------ - -- Issue #24751: When running regrtest with the ``-w`` command line option, - a test run is no longer marked as a failure if all tests succeed when - re-run. - - -What's New in Python 3.5.0 beta 4? -================================== - -Release date: 2015-07-26 - -Core and Builtins ------------------ - -- Issue #23573: Restored optimization of bytes.rfind() and bytearray.rfind() - for single-byte argument on Linux. - -- Issue #24569: Make PEP 448 dictionary evaluation more consistent. - -- Issue #24583: Fix crash when set is mutated while being updated. - -- Issue #24407: Fix crash when dict is mutated while being updated. - -- Issue #24619: New approach for tokenizing async/await. As a consequence, - it is now possible to have one-line 'async def foo(): await ..' functions. - -- Issue #24687: Plug refleak on SyntaxError in function parameters - annotations. - -- Issue #15944: memoryview: Allow arbitrary formats when casting to bytes. - Patch by Martin Panter. - -Library -------- - -- Issue #23441: rcompleter now prints a tab character instead of displaying - possible completions for an empty word. Initial patch by Martin Sekera. - -- Issue #24683: Fixed crashes in _json functions called with arguments of - inappropriate type. - -- Issue #21697: shutil.copytree() now correctly handles symbolic links that - point to directories. Patch by Eduardo Seabra and Thomas Kluyver. - -- Issue #14373: Fixed segmentation fault when gc.collect() is called during - constructing lru_cache (C implementation). - -- Issue #24695: Fix a regression in traceback.print_exception(). If - exc_traceback is None we shouldn't print a traceback header like described - in the documentation. - -- Issue #24620: Random.setstate() now validates the value of state last element. - -- Issue #22485: Fixed an issue that caused `inspect.getsource` to return - incorrect results on nested functions. - -- Issue #22153: Improve unittest docs. Patch from Martin Panter and evilzero. - -- Issue #24580: Symbolic group references to open group in re patterns now are - explicitly forbidden as well as numeric group references. - -- Issue #24206: Fixed __eq__ and __ne__ methods of inspect classes. - -- Issue #24631: Fixed regression in the timeit module with multiline setup. - -- Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely. - Patch from Nicola Palumbo and Laurent De Buyst. - -- Issue #23661: unittest.mock side_effects can now be exceptions again. This - was a regression vs Python 3.4. Patch from Ignacio Rossi - -- Issue #24608: chunk.Chunk.read() now always returns bytes, not str. - -- Issue #18684: Fixed reading out of the buffer in the re module. - -- Issue #24259: tarfile now raises a ReadError if an archive is truncated - inside a data segment. - -- Issue #15014: SMTP.auth() and SMTP.login() now support RFC 4954's optional - initial-response argument to the SMTP AUTH command. - -- Issue #24669: Fix inspect.getsource() for 'async def' functions. - Patch by Kai Groner. - -- Issue #24688: ast.get_docstring() for 'async def' functions. - -Build ------ - -- Issue #24603: Update Windows builds and OS X 10.5 installer to use OpenSSL - 1.0.2d. - - -What's New in Python 3.5.0 beta 3? -================================== - -Release date: 2015-07-05 - -Core and Builtins ------------------ - -- Issue #24467: Fixed possible buffer over-read in bytearray. The bytearray - object now always allocates place for trailing null byte and it's buffer now - is always null-terminated. - -- Upgrade to Unicode 8.0.0. - -- Issue #24345: Add Py_tp_finalize slot for the stable ABI. - -- Issue #24400: Introduce a distinct type for PEP 492 coroutines; add - types.CoroutineType, inspect.getcoroutinestate, inspect.getcoroutinelocals; - coroutines no longer use CO_GENERATOR flag; sys.set_coroutine_wrapper - works only for 'async def' coroutines; inspect.iscoroutine no longer - uses collections.abc.Coroutine, it's intended to test for pure 'async def' - coroutines only; add new opcode: GET_YIELD_FROM_ITER; fix generators wrapper - used in types.coroutine to be instance of collections.abc.Generator; - collections.abc.Awaitable and collections.abc.Coroutine can no longer - be used to detect generator-based coroutines--use inspect.isawaitable - instead. - -- Issue #24450: Add gi_yieldfrom to generators and cr_await to coroutines. - Contributed by Benno Leslie and Yury Selivanov. - -- Issue #19235: Add new RecursionError exception. Patch by Georg Brandl. - -Library -------- - -- Issue #21750: mock_open.read_data can now be read from each instance, as it - could in Python 3.3. - -- Issue #24552: Fix use after free in an error case of the _pickle module. - -- Issue #24514: tarfile now tolerates number fields consisting of only - whitespace. - -- Issue #19176: Fixed doctype() related bugs in C implementation of ElementTree. - A deprecation warning no longer issued by XMLParser subclass with default - doctype() method. Direct call of doctype() now issues a warning. Parser's - doctype() now is not called if target's doctype() is called. Based on patch - by Martin Panter. - -- Issue #20387: Restore semantic round-trip correctness in tokenize/untokenize - for tab-indented blocks. - -- Issue #24456: Fixed possible buffer over-read in adpcm2lin() and lin2adpcm() - functions of the audioop module. - -- Issue #24336: The contextmanager decorator now works with functions with - keyword arguments called "func" and "self". Patch by Martin Panter. - -- Issue #24522: Fix possible integer overflow in json accelerator module. - -- Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar(). - -- Issue #24408: Fixed AttributeError in measure() and metrics() methods of - tkinter.Font. - -- Issue #14373: C implementation of functools.lru_cache() now can be used with - methods. - -- Issue #24347: Set KeyError if PyDict_GetItemWithError returns NULL. - -- Issue #24348: Drop superfluous incref/decref. - -- Issue #24359: Check for changed OrderedDict size during iteration. - -- Issue #24368: Support keyword arguments in OrderedDict methods. - -- Issue #24362: Simplify the C OrderedDict fast nodes resize logic. - -- Issue #24377: Fix a ref leak in OrderedDict.__repr__. - -- Issue #24369: Defend against key-changes during iteration. - -Tests ------ - -- Issue #24373: _testmultiphase and xxlimited now use tp_traverse and - tp_finalize to avoid reference leaks encountered when combining tp_dealloc - with PyType_FromSpec (see issue #16690 for details) - -Documentation -------------- - -- Issue #24458: Update documentation to cover multi-phase initialization for - extension modules (PEP 489). Patch by Petr Viktorin. - -- Issue #24351: Clarify what is meant by "identifier" in the context of - string.Template instances. - -Build ------ - -- Issue #24432: Update Windows builds and OS X 10.5 installer to use OpenSSL - 1.0.2c. - - -What's New in Python 3.5.0 beta 2? -================================== - -Release date: 2015-05-31 - -Core and Builtins ------------------ - -- Issue #24284: The startswith and endswith methods of the str class no longer - return True when finding the empty string and the indexes are completely out - of range. - -- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(), - PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains() - to check for and handle errors correctly. - -- Issue #24328: Fix importing one character extension modules. - -- Issue #11205: In dictionary displays, evaluate the key before the value. - -- Issue #24285: Fixed regression that prevented importing extension modules - from inside packages. Patch by Petr Viktorin. - -Library -------- - -- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs. - -- Issue #24270: Add math.isclose() and cmath.isclose() functions as per PEP 485. - Contributed by Chris Barker and Tal Einat. - -- Issue #5633: Fixed timeit when the statement is a string and the setup is not. - -- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument. - Original patch by David Moore. - -- Issue #16991: Add a C implementation of OrderedDict. - -- Issue #23934: Fix inspect.signature to fail correctly for builtin types - lacking signature information. Initial patch by James Powell. - - -What's New in Python 3.5.0 beta 1? -================================== - -Release date: 2015-05-24 - -Core and Builtins ------------------ - -- Issue #24276: Fixed optimization of property descriptor getter. - -- Issue #24268: PEP 489: Multi-phase extension module initialization. - Patch by Petr Viktorin. - -- Issue #23955: Add pyvenv.cfg option to suppress registry/environment - lookup for generating sys.path on Windows. - -- Issue #24257: Fixed system error in the comparison of faked - types.SimpleNamespace. - -- Issue #22939: Fixed integer overflow in iterator object. Patch by - Clement Rouault. - -- Issue #23985: Fix a possible buffer overrun when deleting a slice from - the front of a bytearray and then appending some other bytes data. - -- Issue #24102: Fixed exception type checking in standard error handlers. - -- Issue #15027: The UTF-32 encoder is now 3x to 7x faster. - -- Issue #23290: Optimize set_merge() for cases where the target is empty. - (Contributed by Serhiy Storchaka.) - -- Issue #2292: PEP 448: Additional Unpacking Generalizations. - -- Issue #24096: Make warnings.warn_explicit more robust against mutation of the - warnings.filters list. - -- Issue #23996: Avoid a crash when a delegated generator raises an - unnormalized StopIteration exception. Patch by Stefan Behnel. - -- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik. - -- Issue #23911: Move path-based importlib bootstrap code to a separate - frozen module. - -- Issue #24192: Fix namespace package imports. - -- Issue #24022: Fix tokenizer crash when processing undecodable source code. - -- Issue #9951: Added a hex() method to bytes, bytearray, and memoryview. - -- Issue #22906: PEP 479: Change StopIteration handling inside generators. - -- Issue #24017: PEP 492: Coroutines with async and await syntax. - -Library -------- - -- Issue #14373: Added C implementation of functools.lru_cache(). Based on - patches by Matt Joiner and Alexey Kachayev. - -- Issue #24230: The tempfile module now accepts bytes for prefix, suffix and dir - parameters and returns bytes in such situations (matching the os module APIs). - -- Issue #22189: collections.UserString now supports __getnewargs__(), - __rmod__(), casefold(), format_map(), isprintable(), and maketrans(). - Patch by Joe Jevnik. - -- Issue #24244: Prevents termination when an invalid format string is - encountered on Windows in strftime. - -- Issue #23973: PEP 484: Add the typing module. - -- Issue #23086: The collections.abc.Sequence() abstract base class added - *start* and *stop* parameters to the index() mixin. - Patch by Devin Jeanpierre. - -- Issue #20035: Replaced the ``tkinter._fix`` module used for setting up the - Tcl/Tk environment on Windows with a private function in the ``_tkinter`` - module that makes no permanent changes to the environment. - -- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked - cursor type. - -- Issue #15836: assertRaises(), assertRaisesRegex(), assertWarns() and - assertWarnsRegex() assertments now check the type of the first argument - to prevent possible user error. Based on patch by Daniel Wagner-Hall. - -- Issue #9858: Add missing method stubs to _io.RawIOBase. Patch by Laura - Rupprecht. - -- Issue #22955: attrgetter, itemgetter and methodcaller objects in the operator - module now support pickling. Added readable and evaluable repr for these - objects. Based on patch by Josh Rosenberg. - -- Issue #22107: tempfile.gettempdir() and tempfile.mkdtemp() now try again - when a directory with the chosen name already exists on Windows as well as - on Unix. tempfile.mkstemp() now fails early if parent directory is not - valid (not exists or is a file) on Windows. - -- Issue #23780: Improved error message in os.path.join() with single argument. - -- Issue #6598: Increased time precision and random number range in - email.utils.make_msgid() to strengthen the uniqueness of the message ID. - -- Issue #24091: Fixed various crashes in corner cases in C implementation of - ElementTree. - -- Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad - argument instead of a ValueError with a bogus FCI error number. - Patch by Jeffrey Armstrong. - -- Issue #13866: *quote_via* argument added to urllib.parse.urlencode. - -- Issue #20098: New mangle_from policy option for email, default True - for compat32, but False for all other policies. - -- Issue #24211: The email library now supports RFC 6532: it can generate - headers using utf-8 instead of encoded words. - -- Issue #16314: Added support for the LZMA compression in distutils. - -- Issue #21804: poplib now supports RFC 6856 (UTF8). - -- Issue #18682: Optimized pprint functions for builtin scalar types. - -- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8). - -- Issue #23488: Random generator objects now consume 2x less memory on 64-bit. - -- Issue #1322: platform.dist() and platform.linux_distribution() functions are - now deprecated. Initial patch by Vajrasky Kok. - -- Issue #22486: Added the math.gcd() function. The fractions.gcd() function - now is deprecated. Based on patch by Mark Dickinson. - -- Issue #24064: Property() docstrings are now writeable. - (Patch by Berker Peksag.) - -- Issue #22681: Added support for the koi8_t encoding. - -- Issue #22682: Added support for the kz1048 encoding. - -- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError - if they called on a closed object. Patch by John Hergenroeder. - -- Issue #21795: smtpd now supports the 8BITMIME extension whenever - the new *decode_data* constructor argument is set to False. - -- Issue #24155: optimize heapq.heapify() for better cache performance - when heapifying large lists. - -- Issue #21800: imaplib now supports RFC 5161 (enable), RFC 6855 - (utf8/internationalized email) and automatically encodes non-ASCII - usernames and passwords to UTF8. - -- Issue #20274: When calling a _sqlite.Connection, it now complains if passed - any keyword arguments. Previously it silently ignored them. - -- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three - METH_VARARGS methods on _sqlite.Connection. - -- Issue #24134: assertRaises(), assertRaisesRegex(), assertWarns() and - assertWarnsRegex() checks now emits a deprecation warning when callable is - None or keyword arguments except msg is passed in the context manager mode. - -- Issue #24018: Add a collections.abc.Generator abstract base class. - Contributed by Stefan Behnel. - -- Issue #23880: Tkinter's getint() and getdouble() now support Tcl_Obj. - Tkinter's getdouble() now supports any numbers (in particular int). - -- Issue #22619: Added negative limit support in the traceback module. - Based on patch by Dmitry Kazakov. - -- Issue #24094: Fix possible crash in json.encode with poorly behaved dict - subclasses. - -- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes. - Patch written by William Orr. - -- Issue #17445: add difflib.diff_bytes() to support comparison of - byte strings (fixes a regression from Python 2). - -- Issue #23917: Fall back to sequential compilation when ProcessPoolExecutor - doesn't exist. Patch by Claudiu Popa. - -- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc. - -- Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't - increment unfinished tasks (this bug was introduced when - JoinableQueue was merged with Queue). - -- Issue #23908: os functions now reject paths with embedded null character - on Windows instead of silently truncating them. - -- Issue #23728: binascii.crc_hqx() could return an integer outside of the range - 0-0xffff for empty data. - -- Issue #23887: urllib.error.HTTPError now has a proper repr() representation. - Patch by Berker Peksag. - -- asyncio: New event loop APIs: set_task_factory() and get_task_factory(). - -- asyncio: async() function is deprecated in favour of ensure_future(). - -- Issue #24178: asyncio.Lock, Condition, Semaphore, and BoundedSemaphore - support new 'async with' syntax. Contributed by Yury Selivanov. - -- Issue #24179: Support 'async for' for asyncio.StreamReader. - Contributed by Yury Selivanov. - -- Issue #24184: Add AsyncIterator and AsyncIterable ABCs to - collections.abc. Contributed by Yury Selivanov. - -- Issue #22547: Implement informative __repr__ for inspect.BoundArguments. - Contributed by Yury Selivanov. - -- Issue #24190: Implement inspect.BoundArgument.apply_defaults() method. - Contributed by Yury Selivanov. - -- Issue #20691: Add 'follow_wrapped' argument to - inspect.Signature.from_callable() and inspect.signature(). - Contributed by Yury Selivanov. - -- Issue #24248: Deprecate inspect.Signature.from_function() and - inspect.Signature.from_builtin(). - -- Issue #23898: Fix inspect.classify_class_attrs() to support attributes - with overloaded __eq__ and __bool__. Patch by Mike Bayer. - -- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers - around bound methods. - -IDLE ----- - -- Issue #23184: remove unused names and imports in idlelib. - Initial patch by Al Sweigart. - -Tests ------ - -- Issue #21520: test_zipfile no longer fails if the word 'bad' appears - anywhere in the name of the current directory. - -- Issue #9517: Move script_helper into the support package. - Patch by Christie Wilson. - -Documentation -------------- - -- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter - doc. Remove obsolete example from FAQ. Patch by Martin Panter. - -- Issue #24029: Document the name binding behavior for submodule imports. - -- Issue #24077: Fix typo in man page for -I command option: -s, not -S - -Tools/Demos ------------ - -- Issue #24000: Improved Argument Clinic's mapping of converters to legacy - "format units". Updated the documentation to match. - -- Issue #24001: Argument Clinic converters now use accept={type} - instead of types={'type'} to specify the types the converter accepts. - -- Issue #23330: h2py now supports arbitrary filenames in #include. - -- Issue #24031: make patchcheck now supports git checkouts, too. - - -What's New in Python 3.5.0 alpha 4? -=================================== - -Release date: 2015-04-19 - -Core and Builtins ------------------ - -- Issue #22980: Under Linux, GNU/KFreeBSD and the Hurd, C extensions now include - the architecture triplet in the extension name, to make it easy to test builds - for different ABIs in the same working tree. Under OS X, the extension name - now includes PEP 3149-style information. - -- Issue #22631: Added Linux-specific socket constant CAN_RAW_FD_FRAMES. - Patch courtesy of Joe Jevnik. - -- Issue #23731: Implement PEP 488: removal of .pyo files. - -- Issue #23726: Don't enable GC for user subclasses of non-GC types that - don't add any new fields. Patch by Eugene Toder. - -- Issue #23309: Avoid a deadlock at shutdown if a daemon thread is aborted - while it is holding a lock to a buffered I/O object, and the main thread - tries to use the same I/O object (typically stdout or stderr). A fatal - error is emitted instead. - -- Issue #22977: Fixed formatting Windows error messages on Wine. - Patch by Martin Panter. - -- Issue #23466: %c, %o, %x, and %X in bytes formatting now raise TypeError on - non-integer input. - -- Issue #24044: Fix possible null pointer dereference in list.sort in out of - memory conditions. - -- Issue #21354: PyCFunction_New function is exposed by python DLL again. - -Library -------- - -- Issue #23840: tokenize.open() now closes the temporary binary file on error - to fix a resource warning. - -- Issue #16914: new debuglevel 2 in smtplib adds timestamps to debug output. - -- Issue #7159: urllib.request now supports sending auth credentials - automatically after the first 401. This enhancement is a superset of the - enhancement from issue #19494 and supersedes that change. - -- Issue #23703: Fix a regression in urljoin() introduced in 901e4e52b20a. - Patch by Demian Brecht. - -- Issue #4254: Adds _curses.update_lines_cols(). Patch by Arnon Yaari - -- Issue #19933: Provide default argument for ndigits in round. Patch by - Vajrasky Kok. - -- Issue #23193: Add a numeric_owner parameter to - tarfile.TarFile.extract and tarfile.TarFile.extractall. Patch by - Michael Vogt and Eric Smith. - -- Issue #23342: Add a subprocess.run() function than returns a CalledProcess - instance for a more consistent API than the existing call* functions. - -- Issue #21217: inspect.getsourcelines() now tries to compute the start and end - lines from the code object, fixing an issue when a lambda function is used as - decorator argument. Patch by Thomas Ballinger and Allison Kaptur. - -- Issue #24521: Fix possible integer overflows in the pickle module. - -- Issue #22931: Allow '[' and ']' in cookie values. - -- The keywords attribute of functools.partial is now always a dictionary. - -- Issue #23811: Add missing newline to the PyCompileError error message. - Patch by Alex Shkop. - -- Issue #21116: Avoid blowing memory when allocating a multiprocessing shared - array that's larger than 50% of the available RAM. Patch by Médéric Boquien. - -- Issue #22982: Improve BOM handling when seeking to multiple positions of - a writable text file. - -- Issue #23464: Removed deprecated asyncio JoinableQueue. - -- Issue #23529: Limit the size of decompressed data when reading from - GzipFile, BZ2File or LZMAFile. This defeats denial of service attacks - using compressed bombs (i.e. compressed payloads which decompress to a huge - size). Patch by Martin Panter and Nikolaus Rath. - -- Issue #21859: Added Python implementation of io.FileIO. - -- Issue #23865: close() methods in multiple modules now are idempotent and more - robust at shutdown. If they need to release multiple resources, all are - released even if errors occur. - -- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not - available. Patch by Davin Potts. - -- Issue #10838: The subprocess now module includes SubprocessError and - TimeoutError in its list of exported names for the users wild enough - to use ``from subprocess import *``. - -- Issue #23411: Added DefragResult, ParseResult, SplitResult, DefragResultBytes, - ParseResultBytes, and SplitResultBytes to urllib.parse.__all__. - Patch by Martin Panter. - -- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if - the FTP connection failed to fix a ResourceWarning. - -- Issue #23853: :meth:`socket.socket.sendall` does no more reset the socket - timeout each time data is sent successfully. The socket timeout is now the - maximum total duration to send all data. - -- Issue #22721: An order of multiline pprint output of set or dict containing - orderable and non-orderable elements no longer depends on iteration order of - set or dict. - -- Issue #15133: _tkinter.tkapp.getboolean() now supports Tcl_Obj and always - returns bool. tkinter.BooleanVar now validates input values (accepted bool, - int, str, and Tcl_Obj). tkinter.BooleanVar.get() now always returns bool. - -- Issue #10590: xml.sax.parseString() now supports string argument. - -- Issue #23338: Fixed formatting ctypes error messages on Cygwin. - Patch by Makoto Kato. - -- Issue #15582: inspect.getdoc() now follows inheritance chains. - -- Issue #2175: SAX parsers now support a character stream of InputSource object. - -- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and - arbitrary precision integers added in Tcl 8.5. - -- Issue #23834: Fix socket.sendto(), use the C Py_ssize_t type to store the - result of sendto() instead of the C int type. - -- Issue #23618: :meth:`socket.socket.connect` now waits until the connection - completes instead of raising :exc:`InterruptedError` if the connection is - interrupted by signals, signal handlers don't raise an exception and the - socket is blocking or has a timeout. :meth:`socket.socket.connect` still - raise :exc:`InterruptedError` for non-blocking sockets. - -- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5. - -- Issue #23836: Fix the faulthandler module to handle reentrant calls to - its signal handlers. - -- Issue #23838: linecache now clears the cache and returns an empty result on - MemoryError. - -- Issue #10395: Added os.path.commonpath(). Implemented in posixpath and ntpath. - Based on patch by Rafik Draoui. - -- Issue #23611: Serializing more "lookupable" objects (such as unbound methods - or nested classes) now are supported with pickle protocols < 4. - -- Issue #13583: sqlite3.Row now supports slice indexing. - -- Issue #18473: Fixed 2to3 and 3to2 compatible pickle mappings. Fixed - ambigious reverse mappings. Added many new mappings. Import mapping is no - longer applied to modules already mapped with full name mapping. - -- Issue #23485: select.select() is now retried automatically with the - recomputed timeout when interrupted by a signal, except if the signal handler - raises an exception. This change is part of the PEP 475. - -- Issue #23752: When built from an existing file descriptor, io.FileIO() now - only calls fstat() once. Before fstat() was called twice, which was not - necessary. - -- Issue #23704: collections.deque() objects now support __add__, __mul__, and - __imul__(). - -- Issue #23171: csv.Writer.writerow() now supports arbitrary iterables. - -- Issue #23745: The new email header parser now handles duplicate MIME - parameter names without error, similar to how get_param behaves. - -- Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus - infinity (-inf) instead of rounding towards zero. - -- Issue #23310: Fix MagicMock's initializer to work with __methods__, just - like configure_mock(). Patch by Kasia Jachim. - -Build ------ - -- Issue #23817: FreeBSD now uses "1.0" in the SOVERSION as other operating - systems, instead of just "1". - -- Issue #23501: Argument Clinic now generates code into separate files by default. - -Tests ------ - -- Issue #23799: Added test.support.start_threads() for running and - cleaning up multiple threads. - -- Issue #22390: test.regrtest now emits a warning if temporary files or - directories are left after running a test. - -Tools/Demos ------------ - -- Issue #18128: pygettext now uses standard +NNNN format in the - POT-Creation-Date header. - -- Issue #23935: Argument Clinic's understanding of format units - accepting bytes, bytearrays, and buffers is now consistent with - both the documentation and the implementation. - -- Issue #23944: Argument Clinic now wraps long impl prototypes at column 78. - -- Issue #20586: Argument Clinic now ensures that functions without docstrings - have signatures. - -- Issue #23492: Argument Clinic now generates argument parsing code with - PyArg_Parse instead of PyArg_ParseTuple if possible. - -- Issue #23500: Argument Clinic is now smarter about generating the "#ifndef" - (empty) definition of the methoddef macro: it's only generated once, even - if Argument Clinic processes the same symbol multiple times, and it's emitted - at the end of all processing rather than immediately after the first use. - -C API ------ - -- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error - - -What's New in Python 3.5.0 alpha 3? -=================================== - -Release date: 2015-03-28 - -Core and Builtins ------------------ - -- Issue #23573: Increased performance of string search operations (str.find, - str.index, str.count, the in operator, str.split, str.partition) with - arguments of different kinds (UCS1, UCS2, UCS4). - -- Issue #23753: Python doesn't support anymore platforms without stat() or - fstat(), these functions are always required. - -- Issue #23681: The -b option now affects comparisons of bytes with int. - -- Issue #23632: Memoryviews now allow tuple indexing (including for - multi-dimensional memoryviews). - -- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet. - -- Issue #23629: Fix the default __sizeof__ implementation for variable-sized - objects. - -Library -------- - -- Issue #14260: The groupindex attribute of regular expression pattern object - now is non-modifiable mapping. - -- Issue #23792: Ignore KeyboardInterrupt when the pydoc pager is active. - This mimics the behavior of the standard unix pagers, and prevents - pipepager from shutting down while the pager itself is still running. - -- Issue #23775: pprint() of OrderedDict now outputs the same representation - as repr(). - -- Issue #23765: Removed IsBadStringPtr calls in ctypes - -- Issue #22364: Improved some re error messages using regex for hints. - -- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes. - -- Issue #21717: The zipfile.ZipFile.open function now supports 'x' (exclusive - creation) mode. - -- Issue #21802: The reader in BufferedRWPair now is closed even when closing - writer failed in BufferedRWPair.close(). - -- Issue #23622: Unknown escapes in regular expressions that consist of ``'\'`` - and ASCII letter now raise a deprecation warning and will be forbidden in - Python 3.6. - -- Issue #23671: string.Template now allows specifying the "self" parameter as - a keyword argument. string.Formatter now allows specifying the "self" and - the "format_string" parameters as keyword arguments. - -- Issue #23502: The pprint module now supports mapping proxies. - -- Issue #17530: pprint now wraps long bytes objects and bytearrays. - -- Issue #22687: Fixed some corner cases in breaking words in tetxtwrap. - Got rid of quadratic complexity in breaking long words. - -- Issue #4727: The copy module now uses pickle protocol 4 (PEP 3154) and - supports copying of instances of classes whose __new__ method takes - keyword-only arguments. - -- Issue #23491: Added a zipapp module to support creating executable zip - file archives of Python code. Registered ".pyz" and ".pyzw" extensions - on Windows for these archives (PEP 441). - -- Issue #23657: Avoid explicit checks for str in zipapp, adding support - for pathlib.Path objects as arguments. - -- Issue #23688: Added support of arbitrary bytes-like objects and avoided - unnecessary copying of memoryview in gzip.GzipFile.write(). - Original patch by Wolfgang Maier. - -- Issue #23252: Added support for writing ZIP files to unseekable streams. - -- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes. - -- Issue #23539: If body is None, http.client.HTTPConnection.request now sets - Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from - some web servers. - -- Issue #22351: The nntplib.NNTP constructor no longer leaves the connection - and socket open until the garbage collector cleans them up. Patch by - Martin Panter. - -- Issue #23704: collections.deque() objects now support methods for index(), - insert(), and copy(). This allows deques to be registered as a - MutableSequence and it improves their substitutability for lists. - -- Issue #23715: :func:`signal.sigwaitinfo` and :func:`signal.sigtimedwait` are - now retried when interrupted by a signal not in the *sigset* parameter, if - the signal handler does not raise an exception. signal.sigtimedwait() - recomputes the timeout with a monotonic clock when it is retried. - -- Issue #23001: Few functions in modules mmap, ossaudiodev, socket, ssl, and - codecs, that accepted only read-only bytes-like object now accept writable - bytes-like object too. - -- Issue #23646: If time.sleep() is interrupted by a signal, the sleep is now - retried with the recomputed delay, except if the signal handler raises an - exception (PEP 475). - -- Issue #23136: _strptime now uniformly handles all days in week 0, including - Dec 30 of previous year. Based on patch by Jim Carroll. - -- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to - NamedTemporaryFile instance. Patch by Bohuslav Kabrda. - -- Issue #22903: The fake test case created by unittest.loader when it fails - importing a test module is now picklable. - -- Issue #22181: On Linux, os.urandom() now uses the new getrandom() syscall if - available, syscall introduced in the Linux kernel 3.17. It is more reliable - and more secure, because it avoids the need of a file descriptor and waits - until the kernel has enough entropy. - -- Issue #2211: Updated the implementation of the http.cookies.Morsel class. - Setting attributes key, value and coded_value directly now is deprecated. - update() and setdefault() now transform and check keys. Comparing for - equality now takes into account attributes key, value and coded_value. - copy() now returns a Morsel, not a dict. repr() now contains all attributes. - Optimized checking keys and quoting values. Added new tests. - Original patch by Demian Brecht. - -- Issue #18983: Allow selection of output units in timeit. - Patch by Julian Gindi. - -- Issue #23631: Fix traceback.format_list when a traceback has been mutated. - -- Issue #23568: Add rdivmod support to MagicMock() objects. - Patch by Håkan Lövdahl. - -- Issue #2052: Add charset parameter to HtmlDiff.make_file(). - -- Issue #23668: Support os.truncate and os.ftruncate on Windows. - -- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar. - Patch by Demian Brecht. - -- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now - handle exceptions raised by an iterator. Patch by Alon Diamant and Davin - Potts. - -- Issue #23581: Add matmul support to MagicMock. Patch by Håkan Lövdahl. - -- Issue #23566: enable(), register(), dump_traceback() and - dump_traceback_later() functions of faulthandler now accept file - descriptors. Patch by Wei Wu. - -- Issue #22928: Disabled HTTP header injections in http.client. - Original patch by Demian Brecht. - -- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with - imp.reload(). Patch by Thomas Kluyver. - -- Issue #23605: os.walk() now calls os.scandir() instead of os.listdir(). - The usage of os.scandir() reduces the number of calls to os.stat(). - Initial patch written by Ben Hoyt. - -Build ------ - -- Issue #23585: make patchcheck will ensure the interpreter is built. - -Tests ------ - -- Issue #23583: Added tests for standard IO streams in IDLE. - -- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. - -Tools/Demos ------------ - -- Issue #22826: The result of open() in Tools/freeze/bkfile.py is now better - compatible with regular files (in particular it now supports the context - management protocol). - - -What's New in Python 3.5 alpha 2? -================================= - -Release date: 2015-03-09 - -Core and Builtins ------------------ - -- Issue #23571: PyObject_Call() and PyCFunction_Call() now raise a SystemError - if a function returns a result and raises an exception. The SystemError is - chained to the previous exception. - -Library -------- - -- Issue #22524: New os.scandir() function, part of the PEP 471: "os.scandir() - function -- a better and faster directory iterator". Patch written by Ben - Hoyt. - -- Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address. - -- Issue #21793: BaseHTTPRequestHandler again logs response code as numeric, - not as stringified enum. Patch by Demian Brecht. - -- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST - flag on certificate stores when it is available. - -- Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the - SSL layer but the underlying connection hasn't been closed. - -- Issue #23504: Added an __all__ to the types module. - -- Issue #23563: Optimized utility functions in urllib.parse. - -- Issue #7830: Flatten nested functools.partial. - -- Issue #20204: Added the __module__ attribute to _tkinter classes. - -- Issue #19980: Improved help() for non-recognized strings. help('') now - shows the help on str. help('help') now shows the help on help(). - Original patch by Mark Lawrence. - -- Issue #23521: Corrected pure python implementation of timedelta division. - - * Eliminated OverflowError from ``timedelta * float`` for some floats; - * Corrected rounding in timedlta true division. - -- Issue #21619: Popen objects no longer leave a zombie after exit in the with - statement if the pipe was broken. Patch by Martin Panter. - -- Issue #22936: Make it possible to show local variables in tracebacks for - both the traceback module and unittest. - -- Issue #15955: Add an option to limit the output size in bz2.decompress(). - Patch by Nikolaus Rath. - -- Issue #6639: Module-level turtle functions no longer raise TclError after - closing the window. - -- Issues #814253, #9179: Group references and conditional group references now - work in lookbehind assertions in regular expressions. - -- Issue #23215: Multibyte codecs with custom error handlers that ignores errors - consumed too much memory and raised SystemError or MemoryError. - Original patch by Aleksi Torhamo. - -- Issue #5700: io.FileIO() called flush() after closing the file. - flush() was not called in close() if closefd=False. - -- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding - differs from file system encoding (e.g. on Mac OS). - -- Issue #23481: Remove RC4 from the SSL module's default cipher list. - -- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty - docstrings. - -- Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb - module. Original patch by Claudiu Popa. - -- Issue #23239: ssl.match_hostname() now supports matching of IP addresses. - -- Issue #23146: Fix mishandling of absolute Windows paths with forward - slashes in pathlib. - -- Issue #23096: Pickle representation of floats with protocol 0 now is the same - for both Python and C implementations. - -- Issue #19105: pprint now more efficiently uses free space at the right. - -- Issue #14910: Add allow_abbrev parameter to argparse.ArgumentParser. Patch by - Jonathan Paugh, Steven Bethard, paul j3 and Daniel Eriksson. - -- Issue #21717: tarfile.open() now supports 'x' (exclusive creation) mode. - -- Issue #23344: marshal.dumps() is now 20-25% faster on average. - -- Issue #20416: marshal.dumps() with protocols 3 and 4 is now 40-50% faster on - average. - -- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h. - -- Issue #23367: Fix possible overflows in the unicodedata module. - -- Issue #23361: Fix possible overflow in Windows subprocess creation code. - -- logging.handlers.QueueListener now takes a respect_handler_level keyword - argument which, if set to True, will pass messages to handlers taking handler - levels into account. - -- Issue #19705: turtledemo now has a visual sorting algorithm demo. Original - patch from Jason Yeo. - -- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the - entire preamble to a multipart body. - -Build ------ - -- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make - the resulting executable faster. - -- Issue #23686: Update OS X 10.5 installer build to use OpenSSL 1.0.2a. - -C API ------ - -- Issue #20204: Deprecation warning is now raised for builtin types without the - __module__ attribute. - -Windows -------- - -- Issue #23465: Implement PEP 486 - Make the Python Launcher aware of virtual - environments. Patch by Paul Moore. - -- Issue #23437: Make user scripts directory versioned on Windows. Patch by Paul - Moore. - - -What's New in Python 3.5 alpha 1? -================================= - -Release date: 2015-02-08 - -Core and Builtins ------------------ - -- Issue #23285: PEP 475 - EINTR handling. - -- Issue #22735: Fix many edge cases (including crashes) involving custom mro() - implementations. - -- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer() - and PyObject_AsWriteBuffer(). - -- Issue #21295: Revert some changes (issue #16795) to AST line numbers and - column offsets that constituted a regression. - -- Issue #22986: Allow changing an object's __class__ between a dynamic type and - static type in some cases. - -- Issue #15859: PyUnicode_EncodeFSDefault(), PyUnicode_EncodeMBCS() and - PyUnicode_EncodeCodePage() now raise an exception if the object is not a - Unicode object. For PyUnicode_EncodeFSDefault(), it was already the case on - platforms other than Windows. Patch written by Campbell Barton. - -- Issue #21408: The default __ne__() now returns NotImplemented if __eq__() - returned NotImplemented. Original patch by Martin Panter. - -- Issue #23321: Fixed a crash in str.decode() when error handler returned - replacment string longer than mailformed input data. - -- Issue #22286: The "backslashreplace" error handlers now works with - decoding and translating. - -- Issue #23253: Delay-load ShellExecute[AW] in os.startfile for reduced - startup overhead on Windows. - -- Issue #22038: pyatomic.h now uses stdatomic.h or GCC built-in functions for - atomic memory access if available. Patch written by Vitor de Lima and Gustavo - Temple. - -- Issue #20284: %-interpolation (aka printf) formatting added for bytes and - bytearray. - -- Issue #23048: Fix jumping out of an infinite while loop in the pdb. - -- Issue #20335: bytes constructor now raises TypeError when encoding or errors - is specified with non-string argument. Based on patch by Renaud Blanch. - -- Issue #22834: If the current working directory ends up being set to a - non-existent directory then import will no longer raise FileNotFoundError. - -- Issue #22869: Move the interpreter startup & shutdown code to a new - dedicated pylifecycle.c module - -- Issue #22847: Improve method cache efficiency. - -- Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff - bytes on a 32-bit platform. - -- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant - dict insertion in debug mode. - -- Issue #22643: Fix integer overflow in Unicode case operations (upper, lower, - title, swapcase, casefold). - -- Issue #17636: Circular imports involving relative imports are now - supported. - -- Issue #22604: Fix assertion error in debug mode when dividing a complex - number by (nan+0j). - -- Issue #21052: Do not raise ImportWarning when sys.path_hooks or sys.meta_path - are set to None. - -- Issue #16518: Use 'bytes-like object required' in error messages that - previously used the far more cryptic "'x' does not support the buffer - protocol. - -- Issue #22470: Fixed integer overflow issues in "backslashreplace", - "xmlcharrefreplace", and "surrogatepass" error handlers. - -- Issue #22540: speed up `PyObject_IsInstance` and `PyObject_IsSubclass` in the - common case that the second argument has metaclass `type`. - -- Issue #18711: Add a new `PyErr_FormatV` function, similar to `PyErr_Format` - but accepting a `va_list` argument. - -- Issue #22520: Fix overflow checking when generating the repr of a unicode - object. - -- Issue #22519: Fix overflow checking in PyBytes_Repr. - -- Issue #22518: Fix integer overflow issues in latin-1 encoding. - -- Issue #16324: _charset parameter of MIMEText now also accepts - email.charset.Charset instances. Initial patch by Claude Paroz. - -- Issue #1764286: Fix inspect.getsource() to support decorated functions. - Patch by Claudiu Popa. - -- Issue #18554: os.__all__ includes posix functions. - -- Issue #21391: Use os.path.abspath in the shutil module. - -- Issue #11471: avoid generating a JUMP_FORWARD instruction at the end of - an if-block if there is no else-clause. Original patch by Eugene Toder. - -- Issue #22215: Now ValueError is raised instead of TypeError when str or bytes - argument contains not permitted null character or byte. - -- Issue #22258: Fix the internal function set_inheritable() on Illumos. - This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails - with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable() - now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``). - -- Issue #21389: Displaying the __qualname__ of the underlying function in the - repr of a bound method. - -- Issue #22206: Using pthread, PyThread_create_key() now sets errno to ENOMEM - and returns -1 (error) on integer overflow. - -- Issue #20184: Argument Clinic based signature introspection added for - 30 of the builtin functions. - -- Issue #22116: C functions and methods (of the 'builtin_function_or_method' - type) can now be weakref'ed. Patch by Wei Wu. - -- Issue #22077: Improve index error messages for bytearrays, bytes, lists, - and tuples by adding 'or slices'. Added ', not <typename>' for bytearrays. - Original patch by Claudiu Popa. - -- Issue #20179: Apply Argument Clinic to bytes and bytearray. - Patch by Tal Einat. - -- Issue #22082: Clear interned strings in slotdefs. - -- Upgrade Unicode database to Unicode 7.0.0. - -- Issue #21897: Fix a crash with the f_locals attribute with closure - variables when frame.clear() has been called. - -- Issue #21205: Add a new ``__qualname__`` attribute to generator, the - qualified name, and use it in the representation of a generator - (``repr(gen)``). The default name of the generator (``__name__`` attribute) - is now get from the function instead of the code. Use ``gen.gi_code.co_name`` - to get the name of the code. - -- Issue #21669: With the aid of heuristics in SyntaxError.__init__, the - parser now attempts to generate more meaningful (or at least more search - engine friendly) error messages when "exec" and "print" are used as - statements. - -- Issue #21642: In the conditional if-else expression, allow an integer written - with no space between itself and the ``else`` keyword (e.g. ``True if 42else - False``) to be valid syntax. - -- Issue #21523: Fix over-pessimistic computation of the stack effect of - some opcodes in the compiler. This also fixes a quadratic compilation - time issue noticeable when compiling code with a large number of "and" - and "or" operators. - -- Issue #21418: Fix a crash in the builtin function super() when called without - argument and without current frame (ex: embedded Python). - -- Issue #21425: Fix flushing of standard streams in the interactive - interpreter. - -- Issue #21435: In rare cases, when running finalizers on objects in cyclic - trash a bad pointer dereference could occur due to a subtle flaw in - internal iteration logic. - -- Issue #21377: PyBytes_Concat() now tries to concatenate in-place when the - first argument has a reference count of 1. Patch by Nikolaus Rath. - -- Issue #20355: -W command line options now have higher priority than the - PYTHONWARNINGS environment variable. Patch by Arfrever. - -- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. - -- Issue #20904: Support setting FPU precision on m68k. - -- Issue #21209: Fix sending tuples to custom generator objects with the yield - from syntax. - -- Issue #21193: pow(a, b, c) now raises ValueError rather than TypeError when b - is negative. Patch by Josh Rosenberg. - -- PEP 465 and Issue #21176: Add the '@' operator for matrix multiplication. - -- Issue #21134: Fix segfault when str is called on an uninitialized - UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object. - -- Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by - Andreas Schwab. - -- Issue #20929: Add a type cast to avoid shifting a negative number. - -- Issue #20731: Properly position in source code files even if they - are opened in text mode. Patch by Serhiy Storchaka. - -- Issue #20637: Key-sharing now also works for instance dictionaries of - subclasses. Patch by Peter Ingebretson. - -- Issue #8297: Attributes missing from modules now include the module name - in the error text. Original patch by ysj.ray. - -- Issue #19995: %c, %o, %x, and %X now raise TypeError on non-integer input. - -- Issue #19655: The ASDL parser - used by the build process to generate code for - managing the Python AST in C - was rewritten. The new parser is self contained - and does not require to carry long the spark.py parser-generator library; - spark.py was removed from the source base. - -- Issue #12546: Allow ``\x00`` to be used as a fill character when using str, int, - float, and complex __format__ methods. - -- Issue #20480: Add ipaddress.reverse_pointer. Patch by Leon Weber. - -- Issue #13598: Modify string.Formatter to support auto-numbering of - replacement fields. It now matches the behavior of str.format() in - this regard. Patches by Phil Elson and Ramchandra Apte. - -- Issue #8931: Make alternate formatting ('#') for type 'c' raise an - exception. In versions prior to 3.5, '#' with 'c' had no effect. Now - specifying it is an error. Patch by Torsten Landschoff. - -- Issue #23165: Perform overflow checks before allocating memory in the - _Py_char2wchar function. - -Library -------- - -- Issue #23399: pyvenv creates relative symlinks where possible. - -- Issue #20289: cgi.FieldStorage() now supports the context management - protocol. - -- Issue #13128: Print response headers for CONNECT requests when debuglevel - > 0. Patch by Demian Brecht. - -- Issue #15381: Optimized io.BytesIO to make less allocations and copyings. - -- Issue #22818: Splitting on a pattern that could match an empty string now - raises a warning. Patterns that can only match empty strings are now - rejected. - -- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to - prevent corrupting exported buffer. - -- Issue #23326: Removed __ne__ implementations. Since fixing default __ne__ - implementation in issue #21408 they are redundant. - -- Issue #23363: Fix possible overflow in itertools.permutations. - -- Issue #23364: Fix possible overflow in itertools.product. - -- Issue #23366: Fixed possible integer overflow in itertools.combinations. - -- Issue #23369: Fixed possible integer overflow in - _json.encode_basestring_ascii. - -- Issue #23353: Fix the exception handling of generators in - PyEval_EvalFrameEx(). At entry, save or swap the exception state even if - PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state - is now always restored or swapped, not only if why is WHY_YIELD or - WHY_RETURN. Patch co-written with Antoine Pitrou. - -- Issue #14099: Restored support of writing ZIP files to tellable but - non-seekable streams. - -- Issue #14099: Writing to ZipFile and reading multiple ZipExtFiles is - threadsafe now. - -- Issue #19361: JSON decoder now raises JSONDecodeError instead of ValueError. - -- Issue #18518: timeit now rejects statements which can't be compiled outside - a function or a loop (e.g. "return" or "break"). - -- Issue #23094: Fixed readline with frames in Python implementation of pickle. - -- Issue #23268: Fixed bugs in the comparison of ipaddress classes. - -- Issue #21408: Removed incorrect implementations of __ne__() which didn't - returned NotImplemented if __eq__() returned NotImplemented. The default - __ne__() now works correctly. - -- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed) - headers with no key rather than assuming the body has started. - -- Issue #20188: Support Application-Layer Protocol Negotiation (ALPN) in the ssl - module. - -- Issue #23133: Pickling of ipaddress objects now produces more compact and - portable representation. - -- Issue #23248: Update ssl error codes from latest OpenSSL git master. - -- Issue #23266: Much faster implementation of ipaddress.collapse_addresses() - when there are many non-consecutive addresses. - -- Issue #23098: 64-bit dev_t is now supported in the os module. - -- Issue #21817: When an exception is raised in a task submitted to a - ProcessPoolExecutor, the remote traceback is now displayed in the - parent process. Patch by Claudiu Popa. - -- Issue #15955: Add an option to limit output size when decompressing LZMA - data. Patch by Nikolaus Rath and Martin Panter. - -- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure" - as they are written in the standard. - -- Issue #23063: In the disutils' check command, fix parsing of reST with code or - code-block directives. - -- Issue #23209, #23225: selectors.BaseSelector.get_key() now raises a - RuntimeError if the selector is closed. And selectors.BaseSelector.close() - now clears its internal reference to the selector mapping to break a - reference cycle. Initial patch written by Martin Richard. - -- Issue #17911: Provide a way to seed the linecache for a PEP-302 module - without actually loading the code. - -- Issue #17911: Provide a new object API for traceback, including the ability - to not lookup lines at all until the traceback is actually rendered, without - any trace of the original objects being kept alive. - -- Issue #19777: Provide a home() classmethod on Path objects. Contributed - by Victor Salgado and Mayank Tripathi. - -- Issue #23206: Make ``json.dumps(..., ensure_ascii=False)`` as fast as the - default case of ``ensure_ascii=True``. Patch by Naoki Inada. - -- Issue #23185: Add math.inf and math.nan constants. - -- Issue #23186: Add ssl.SSLObject.shared_ciphers() and - ssl.SSLSocket.shared_ciphers() to fetch the client's list ciphers sent at - handshake. - -- Issue #23143: Remove compatibility with OpenSSLs older than 0.9.8. - -- Issue #23132: Improve performance and introspection support of comparison - methods created by functool.total_ordering. - -- Issue #19776: Add an expanduser() method on Path objects. - -- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and - fragment when it redirects to add a trailing slash. - -- Issue #21793: Added http.HTTPStatus enums (i.e. HTTPStatus.OK, - HTTPStatus.NOT_FOUND). Patch by Demian Brecht. - -- Issue #23093: In the io, module allow more operations to work on detached - streams. - -- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol - version. - -- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), - instead of reading /dev/urandom, to get pseudo-random bytes. - -- Issue #19104: pprint now produces evaluable output for wrapped strings. - -- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter. - -- Issue #22783: Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX - opcode if possible. - -- Issue #15513: Added a __sizeof__ implementation for pickle classes. - -- Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can - produce more compact result and no longer produces invalid output if input - data contains MEMOIZE opcodes together with PUT or BINPUT opcodes. - -- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port - value in the host header was set to "None". Patch by Demian Brecht. - -- Issue #23016: A warning no longer produces an AttributeError when the program - is run with pythonw.exe. - -- Issue #21775: shutil.copytree(): fix crash when copying to VFAT. An exception - handler assumed that OSError objects always have a 'winerror' attribute. - That is not the case, so the exception handler itself raised AttributeError - when run on Linux (and, presumably, any other non-Windows OS). - Patch by Greg Ward. - -- Issue #1218234: Fix inspect.getsource() to load updated source of - reloaded module. Initial patch by Berker Peksag. - -- Issue #21740: Support wrapped callables in doctest. Patch by Claudiu Popa. - -- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no - FD is registered. - -- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the - context's check_hostname attribute over the *check_hostname* parameter. - -- Issue #22696: Add function :func:`sys.is_finalizing` to know about - interpreter shutdown. - -- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode - will return. This resolves CVE-2013-1753. - -- Issue #14099: ZipFile.open() no longer reopen the underlying file. Objects - returned by ZipFile.open() can now operate independently of the ZipFile even - if the ZipFile was created by passing in a file-like object as the first - argument to the constructor. - -- Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is - asked to compile a source file containing multiple dots in the source file - name. - -- Issue #21971: Update turtledemo doc and add module to the index. - -- Issue #21032: Fixed socket leak if HTTPConnection.getresponse() fails. - Original patch by Martin Panter. - -- Issue #22407: Deprecated the use of re.LOCALE flag with str patterns or - re.ASCII. It was newer worked. - -- Issue #22902: The "ip" command is now used on Linux to determine MAC address - in uuid.getnode(). Pach by Bruno Cauet. - -- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor. - -- Issue #22389: Add contextlib.redirect_stderr(). - -- Issue #21356: Make ssl.RAND_egd() optional to support LibreSSL. The - availability of the function is checked during the compilation. Patch written - by Bernard Spil. - -- Issue #22915: SAX parser now supports files opened with file descriptor or - bytes path. - -- Issue #22609: Constructors and update methods of mapping classes in the - collections module now accept the self keyword argument. - -- Issue #22940: Add readline.append_history_file. - -- Issue #19676: Added the "namereplace" error handler. - -- Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler. - -- Issue #22921: Allow SSLContext to take the *hostname* parameter even if - OpenSSL doesn't support SNI. - -- Issue #22894: TestCase.subTest() would cause the test suite to be stopped - when in failfast mode, even in the absence of failures. - -- Issue #22796: HTTP cookie parsing is now stricter, in order to protect - against potential injection attacks. - -- Issue #22370: Windows detection in pathlib is now more robust. - -- Issue #22841: Reject coroutines in asyncio add_signal_handler(). - Patch by Ludovic.Gasc. - -- Issue #19494: Added urllib.request.HTTPBasicPriorAuthHandler. Patch by - Matej Cepl. - -- Issue #22578: Added attributes to the re.error class. - -- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor. - -- Issue #12728: Different Unicode characters having the same uppercase but - different lowercase are now matched in case-insensitive regular expressions. - -- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian - platforms. - -- Issue #21650: Add an `--sort-keys` option to json.tool CLI. - -- Issue #22824: Updated reprlib output format for sets to use set literals. - Patch contributed by Berker Peksag. - -- Issue #22824: Updated reprlib output format for arrays to display empty - arrays without an unnecessary empty list. Suggested by Serhiy Storchaka. - -- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x. - Based on patch by Martin Panter. - -- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat. - Based on patch by Aivars Kalvāns. - -- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments. - -- Issue #22417: Verify certificates by default in httplib (PEP 476). - -- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2 - and above. Patch by Tim Graham. - -- Issue #22776: Brought excluded code into the scope of a try block in - SysLogHandler.emit(). - -- Issue #22665: Add missing get_terminal_size and SameFileError to - shutil.__all__. - -- Issue #6623: Remove deprecated Netrc class in the ftplib module. Patch by - Matt Chaput. - -- Issue #17381: Fixed handling of case-insensitive ranges in regular - expressions. - -- Issue #22410: Module level functions in the re module now cache compiled - locale-dependent regular expressions taking into account the locale. - -- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.) - now return False when the underlying stat call raises NotADirectoryError. - -- Issue #8876: distutils now falls back to copying files when hard linking - doesn't work. This allows use with special filesystems such as VirtualBox - shared folders. - -- Issue #22217: Implemented reprs of classes in the zipfile module. - -- Issue #22457: Honour load_tests in the start_dir of discovery. - -- Issue #18216: gettext now raises an error when a .mo file has an - unsupported major version number. Patch by Aaron Hill. - -- Issue #13918: Provide a locale.delocalize() function which can remove - locale-specific number formatting from a string representing a number, - without then converting it to a specific type. Patch by Cédric Krier. - -- Issue #22676: Make the pickling of global objects which don't have a - __module__ attribute less slow. - -- Issue #18853: Fixed ResourceWarning in shlex.__nain__. - -- Issue #9351: Defaults set with set_defaults on an argparse subparser - are no longer ignored when also set on the parent parser. - -- Issue #7559: unittest test loading ImportErrors are reported as import errors - with their import exception rather than as attribute errors after the import - has already failed. - -- Issue #19746: Make it possible to examine the errors from unittest - discovery without executing the test suite. The new `errors` attribute - on TestLoader exposes these non-fatal errors encountered during discovery. - -- Issue #21991: Make email.headerregistry's header 'params' attributes - be read-only (MappingProxyType). Previously the dictionary was modifiable - but a new one was created on each access of the attribute. - -- Issue #22638: SSLv3 is now disabled throughout the standard library. - It can still be enabled by instantiating a SSLContext manually. - -- Issue #22641: In asyncio, the default SSL context for client connections - is now created using ssl.create_default_context(), for stronger security. - -- Issue #17401: Include closefd in io.FileIO repr. - -- Issue #21338: Add silent mode for compileall. quiet parameters of - compile_{dir, file, path} functions now have a multilevel value. Also, - -q option of the CLI now have a multilevel value. Patch by Thomas Kluyver. - -- Issue #20152: Convert the array and cmath modules to Argument Clinic. - -- Issue #18643: Add socket.socketpair() on Windows. - -- Issue #22435: Fix a file descriptor leak when socketserver bind fails. - -- Issue #13096: Fixed segfault in CTypes POINTER handling of large - values. - -- Issue #11694: Raise ConversionError in xdrlib as documented. Patch - by Filip Gruszczyński and Claudiu Popa. - -- Issue #19380: Optimized parsing of regular expressions. - -- Issue #1519638: Now unmatched groups are replaced with empty strings in re.sub() - and re.subn(). - -- Issue #18615: sndhdr.what/whathdr now return a namedtuple. - -- Issue #22462: Fix pyexpat's creation of a dummy frame to make it - appear in exception tracebacks. - -- Issue #21965: Add support for in-memory SSL to the ssl module. Patch - by Geert Jansen. - -- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called - with an iterator alive. - -- Issue #11866: Eliminated race condition in the computation of names - for new threads. - -- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules - is mutated while iterating. Patch by Olivier Grisel. - -- Issue #11271: concurrent.futures.Executor.map() now takes a *chunksize* - argument to allow batching of tasks in child processes and improve - performance of ProcessPoolExecutor. Patch by Dan O'Reilly. - -- Issue #21883: os.path.join() and os.path.relpath() now raise a TypeError with - more helpful error message for unsupported or mismatched types of arguments. - -- Issue #22219: The zipfile module CLI now adds entries for directories - (including empty directories) in ZIP file. - -- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the - environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows. - -- Issue #22508: The email.__version__ variable has been removed; the email - code is no longer shipped separately from the stdlib, and __version__ - hasn't been updated in several releases. - -- Issue #20076: Added non derived UTF-8 aliases to locale aliases table. - -- Issue #20079: Added locales supported in glibc 2.18 to locale alias table. - -- Issue #20218: Added convenience methods read_text/write_text and read_bytes/ - write_bytes to pathlib.Path objects. - -- Issue #22396: On 32-bit AIX platform, don't expose os.posix_fadvise() nor - os.posix_fallocate() because their prototypes in system headers are wrong. - -- Issue #22517: When an io.BufferedRWPair object is deallocated, clear its - weakrefs. - -- Issue #22437: Number of capturing groups in regular expression is no longer - limited by 100. - -- Issue #17442: InteractiveInterpreter now displays the full chained traceback - in its showtraceback method, to match the built in interactive interpreter. - -- Issue #23392: Added tests for marshal C API that works with FILE*. - - -- Issue #10510: distutils register and upload methods now use HTML standards - compliant CRLF line endings. - -- Issue #9850: Fixed macpath.join() for empty first component. Patch by - Oleg Oshmyan. - -- Issue #5309: distutils' build and build_ext commands now accept a ``-j`` - option to enable parallel building of extension modules. - -- Issue #22448: Improve canceled timer handles cleanup to prevent - unbound memory usage. Patch by Joshua Moore-Oliva. - -- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when - used in the with statement in generator. - -- Issue #22362: Forbidden ambiguous octal escapes out of range 0-0o377 in - regular expressions. - -- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS - directory attributes. - -- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory - records if allowZip64 is false. - -- Issue #22278: Fix urljoin problem with relative urls, a regression observed - after changes to issue22118 were submitted. - -- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re - module. Removed trailing spaces in debugging output. - -- Issue #22423: Unhandled exception in thread no longer causes unhandled - AttributeError when sys.stderr is None. - -- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects - line buffering, rather than block buffering. Patch by Akira Li. - -- Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now - a method. - -- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the - correct result when the header has parameters as well as a value. - -- Issue #22247: Add NNTPError to nntplib.__all__. - -- Issue #22366: urllib.request.urlopen will accept a context object - (SSLContext) as an argument which will then be used for HTTPS connection. - Patch by Alex Gaynor. - -- Issue #4180: The warnings registries are now reset when the filters - are modified. - -- Issue #22419: Limit the length of incoming HTTP request in wsgiref server to - 65536 bytes and send a 414 error code for higher lengths. Patch contributed - by Devin Cook. - -- Lax cookie parsing in http.cookies could be a security issue when combined - with non-standard cookie handling in some Web browsers. Reported by - Sergey Bobrov. - -- Issue #20537: logging methods now accept an exception instance as well as a - Boolean value or exception tuple. Thanks to Yury Selivanov for the patch. - -- Issue #22384: An exception in Tkinter callback no longer crashes the program - when it is run with pythonw.exe. - -- Issue #22168: Prevent turtle AttributeError with non-default Canvas on OS X. - -- Issue #21147: sqlite3 now raises an exception if the request contains a null - character instead of truncating it. Based on patch by Victor Stinner. - -- Issue #13968: The glob module now supports recursive search in - subdirectories using the ``**`` pattern. - -- Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with - empty string or tuple argument. - -- Issue #21951: Tkinter now most likely raises MemoryError instead of crash - if the memory allocation fails. - -- Issue #22338: Fix a crash in the json module on memory allocation failure. - -- Issue #12410: imaplib.IMAP4 now supports the context management protocol. - Original patch by Tarek Ziadé. - -- Issue #21270: We now override tuple methods in mock.call objects so that - they can be used as normal call attributes. - -- Issue #16662: load_tests() is now unconditionally run when it is present in - a package's __init__.py. TestLoader.loadTestsFromModule() still accepts - use_load_tests, but it is deprecated and ignored. A new keyword-only - attribute `pattern` is added and documented. Patch given by Robert Collins, - tweaked by Barry Warsaw. - -- Issue #22226: First letter no longer is stripped from the "status" key in - the result of Treeview.heading(). - -- Issue #19524: Fixed resource leak in the HTTP connection when an invalid - response is received. Patch by Martin Panter. - -- Issue #20421: Add a .version() method to SSL sockets exposing the actual - protocol version in use. - -- Issue #19546: configparser exceptions no longer expose implementation details. - Chained KeyErrors are removed, which leads to cleaner tracebacks. Patch by - Claudiu Popa. - -- Issue #22051: turtledemo no longer reloads examples to re-run them. - Initialization of variables and gui setup should be done in main(), - which is called each time a demo is run, but not on import. - -- Issue #21933: Turtledemo users can change the code font size with a menu - selection or control(command) '-' or '+' or control-mousewheel. - Original patch by Lita Cho. - -- Issue #21597: The separator between the turtledemo text pane and the drawing - canvas can now be grabbed and dragged with a mouse. The code text pane can - be widened to easily view or copy the full width of the text. The canvas - can be widened on small screens. Original patches by Jan Kanis and Lita Cho. - -- Issue #18132: Turtledemo buttons no longer disappear when the window is - shrunk. Original patches by Jan Kanis and Lita Cho. - -- Issue #22043: time.monotonic() is now always available. - ``threading.Lock.acquire()``, ``threading.RLock.acquire()`` and socket - operations now use a monotonic clock, instead of the system clock, when a - timeout is used. - -- Issue #21527: Add a default number of workers to ThreadPoolExecutor equal - to 5 times the number of CPUs. Patch by Claudiu Popa. - -- Issue #22216: smtplib now resets its state more completely after a quit. The - most obvious consequence of the previous behavior was a STARTTLS failure - during a connect/starttls/quit/connect/starttls sequence. - -- Issue #22098: ctypes' BigEndianStructure and LittleEndianStructure now - define an empty __slots__ so that subclasses don't always get an instance - dict. Patch by Claudiu Popa. - -- Issue #22185: Fix an occasional RuntimeError in threading.Condition.wait() - caused by mutation of the waiters queue without holding the lock. Patch - by Doug Zongker. - -- Issue #22287: On UNIX, _PyTime_gettimeofday() now uses - clock_gettime(CLOCK_REALTIME) if available. As a side effect, Python now - depends on the librt library on Solaris and on Linux (only with glibc older - than 2.17). - -- Issue #22182: Use e.args to unpack exceptions correctly in - distutils.file_util.move_file. Patch by Claudiu Popa. - -- The webbrowser module now uses subprocess's start_new_session=True rather - than a potentially risky preexec_fn=os.setsid call. - -- Issue #22042: signal.set_wakeup_fd(fd) now raises an exception if the file - descriptor is in blocking mode. - -- Issue #16808: inspect.stack() now returns a named tuple instead of a tuple. - Patch by Daniel Shahaf. - -- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode. - -- Issue #2527: Add a *globals* argument to timeit functions, in order to - override the globals namespace in which the timed code is executed. - Patch by Ben Roberts. - -- Issue #22118: Switch urllib.parse to use RFC 3986 semantics for the - resolution of relative URLs, rather than RFCs 1808 and 2396. - Patch by Demian Brecht. - -- Issue #21549: Added the "members" parameter to TarFile.list(). - -- Issue #19628: Allow compileall recursion depth to be specified with a -r - option. - -- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows. - -- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter. - -- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names. - -- Issue #15381: Optimized line reading in io.BytesIO. - -- Issue #8797: Raise HTTPError on failed Basic Authentication immediately. - Initial patch by Sam Bull. - -- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems() - in the mailbox module. - -- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when - parsing long line. Original patch by Raymond Hettinger. - -- Issue #22184: The functools LRU Cache decorator factory now gives an earlier - and clearer error message when the user forgets the required parameters. - -- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on - AIX. Based on patch by Delhallt. - -- Issue #21725: Added support for RFC 6531 (SMTPUTF8) in smtpd. - -- Issue #22176: Update the ctypes module's libffi to v3.1. This release - adds support for the Linux AArch64 and POWERPC ELF ABIv2 little endian - architectures. - -- Issue #5411: Added support for the "xztar" format in the shutil module. - -- Issue #21121: Don't force 3rd party C extensions to be built with - -Werror=declaration-after-statement. - -- Issue #21975: Fixed crash when using uninitialized sqlite3.Row (in particular - when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the - __new__() method. - -- Issue #20170: Convert posixmodule to use Argument Clinic. - -- Issue #21539: Add an *exists_ok* argument to `Pathlib.mkdir()` to mimic - `mkdir -p` and `os.makedirs()` functionality. When true, ignore - FileExistsErrors. Patch by Berker Peksag. - -- Issue #22127: Bypass IDNA for pure-ASCII host names in the socket module - (in particular for numeric IPs). - -- Issue #21047: set the default value for the *convert_charrefs* argument - of HTMLParser to True. Patch by Berker Peksag. - -- Add an __all__ to html.entities. - -- Issue #15114: the strict mode and argument of HTMLParser, HTMLParser.error, - and the HTMLParserError exception have been removed. - -- Issue #22085: Dropped support of Tk 8.3 in Tkinter. - -- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk. - In particular this allows initializing images from binary data. - -- Issue #22003: When initialized from a bytes object, io.BytesIO() now - defers making a copy until it is mutated, improving performance and - memory use on some use cases. Patch by David Wilson. - -- Issue #22018: On Windows, signal.set_wakeup_fd() now also supports sockets. - A side effect is that Python depends to the WinSock library. - -- Issue #22054: Add os.get_blocking() and os.set_blocking() functions to get - and set the blocking mode of a file descriptor (False if the O_NONBLOCK flag - is set, True otherwise). These functions are not available on Windows. - -- Issue #17172: Make turtledemo start as active on OS X even when run with - subprocess. Patch by Lita Cho. - -- Issue #21704: Fix build error for _multiprocessing when semaphores - are not available. Patch by Arfrever Frehtes Taifersar Arahesis. - -- Issue #20173: Convert sha1, sha256, sha512 and md5 to ArgumentClinic. - Patch by Vajrasky Kok. - -- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError - on closed socket. repr(socket.socket) already works fine. - -- Issue #22033: Reprs of most Python implemened classes now contain actual - class name instead of hardcoded one. - -- Issue #21947: The dis module can now disassemble generator-iterator - objects based on their gi_code attribute. Patch by Clement Rouault. - -- Issue #16133: The asynchat.async_chat.handle_read() method now ignores - BlockingIOError exceptions. - -- Issue #22044: Fixed premature DECREF in call_tzinfo_method. - Patch by Tom Flanagan. - -- Issue #19884: readline: Disable the meta modifier key if stdout is not - a terminal to not write the ANSI sequence ``"\033[1034h"`` into stdout. This - sequence is used on some terminal (ex: TERM=xterm-256color") to enable - support of 8 bit characters. - -- Issue #4350: Removed a number of out-of-dated and non-working for a long time - Tkinter methods. - -- Issue #6167: Scrollbar.activate() now returns the name of active element if - the argument is not specified. Scrollbar.set() now always accepts only 2 - arguments. - -- Issue #15275: Clean up and speed up the ntpath module. - -- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is - specified. - -- Issue #22032: __qualname__ instead of __name__ is now always used to format - fully qualified class names of Python implemented classes. - -- Issue #22031: Reprs now always use hexadecimal format with the "0x" prefix - when contain an id in form " at 0x...". - -- Issue #22018: signal.set_wakeup_fd() now raises an OSError instead of a - ValueError on ``fstat()`` failure. - -- Issue #21044: tarfile.open() now handles fileobj with an integer 'name' - attribute. Based on patch by Antoine Pietri. - -- Issue #21966: Respect -q command-line option when code module is ran. - -- Issue #19076: Don't pass the redundant 'file' argument to self.error(). - -- Issue #16382: Improve exception message of warnings.warn() for bad - category. Initial patch by Phil Elson. - -- Issue #21932: os.read() now uses a :c:func:`Py_ssize_t` type instead of - :c:type:`int` for the size to support reading more than 2 GB at once. On - Windows, the size is truncted to INT_MAX. As any call to os.read(), the OS - may read less bytes than the number of requested bytes. - -- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows. - -- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError - if the number of received bytes is negative. - -- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't - get a bytes string - -- Issue #21707: Add missing kwonlyargcount argument to - ModuleFinder.replace_paths_in_code(). - -- Issue #20639: calling Path.with_suffix('') allows removing the suffix - again. Patch by July Tikhonov. - -- Issue #21714: Disallow the construction of invalid paths using - Path.with_name(). Original patch by Antony Lee. - -- Issue #15014: Added 'auth' method to smtplib to make implementing auth - mechanisms simpler, and used it internally in the login method. - -- Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed - as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman. - -- Issue #21090: io.FileIO.readall() does not ignore I/O errors anymore. Before, - it ignored I/O errors if at least the first C call read() succeed. - -- Issue #5800: headers parameter of wsgiref.headers.Headers is now optional. - Initial patch by Pablo Torres Navarrete and SilentGhost. - -- Issue #21781: ssl.RAND_add() now supports strings longer than 2 GB. - -- Issue #21679: Prevent extraneous fstat() calls during open(). Patch by - Bohuslav Kabrda. - -- Issue #21863: cProfile now displays the module name of C extension functions, - in addition to their own name. - -- Issue #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper - object is destroyed. The destructor now closes the file if needed. The - close() method can now be called twice: the second call does nothing. - -- Issue #21858: Better handling of Python exceptions in the sqlite3 module. - -- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is - discarded after parsing, so the input file isn't unexpectedly closed. - -- Issue #20295: imghdr now recognizes OpenEXR format images. - -- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure - files closing. Patch by Claudiu Popa. - -- Issue #21491: socketserver: Fix a race condition in child processes reaping. - -- Issue #21719: Added the ``st_file_attributes`` field to os.stat_result on - Windows. - -- Issue #21832: Require named tuple inputs to be exact strings. - -- Issue #21722: The distutils "upload" command now exits with a non-zero - return code when uploading fails. Patch by Martin Dengler. - -- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the - maximum size. Patch written by Vajrasky Kok. - -- Issue #21711: support for "site-python" directories has now been removed - from the site module (it was deprecated in 3.4). - -- Issue #17552: new socket.sendfile() method allowing a file to be sent over a - socket by using high-performance os.sendfile() on UNIX. - Patch by Giampaolo Rodola'. - -- Issue #18039: dbm.dump.open() now always creates a new database when the - flag has the value 'n'. Patch by Claudiu Popa. - -- Issue #21326: Add a new is_closed() method to asyncio.BaseEventLoop. - run_forever() and run_until_complete() methods of asyncio.BaseEventLoop now - raise an exception if the event loop was closed. - -- Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths - before checking for a CGI script at that path. - -- Issue #21310: Fixed possible resource leak in failed open(). - -- Issue #21256: Printout of keyword args should be in deterministic order in - a mock function call. This will help to write better doctests. - -- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods. - -- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a - valid file. - -- Issue #21515: tempfile.TemporaryFile now uses os.O_TMPFILE flag is available. - -- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods - that use 'self' in the example code is generated correctly. - -- Issue #21463: In urllib.request, fix pruning of the FTP cache. - -- Issue #21618: The subprocess module could fail to close open fds that were - inherited by the calling process and already higher than POSIX resource - limits would otherwise allow. On systems with a functioning /proc/self/fd - or /dev/fd interface the max is now ignored and all fds are closed. - -- Issue #20383: Introduce importlib.util.module_from_spec() as the preferred way - to create a new module. - -- Issue #21552: Fixed possible integer overflow of too long string lengths in - the tkinter module on 64-bit platforms. - -- Issue #14315: The zipfile module now ignores extra fields in the central - directory that are too short to be parsed instead of letting a struct.unpack - error bubble up as this "bad data" appears in many real world zip files in - the wild and is ignored by other zip tools. - -- Issue #13742: Added "key" and "reverse" parameters to heapq.merge(). - (First draft of patch contributed by Simon Sapin.) - -- Issue #21402: tkinter.ttk now works when default root window is not set. - -- Issue #3015: _tkinter.create() now creates tkapp object with wantobject=1 by - default. - -- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particular - it supports reverse() and negative indices. Original patch by Claudiu Popa. - -- Issue #18807: If copying (no symlinks) specified for a venv, then the python - interpreter aliases (python, python3) are now created by copying rather than - symlinking. - -- Issue #20197: Added support for the WebP image type in the imghdr module. - Patch by Fabrice Aneche and Claudiu Popa. - -- Issue #21513: Speedup some properties of IP addresses (IPv4Address, - IPv6Address) such as .is_private or .is_multicast. - -- Issue #21137: Improve the repr for threading.Lock() and its variants - by showing the "locked" or "unlocked" status. Patch by Berker Peksag. - -- Issue #21538: The plistlib module now supports loading of binary plist files - when reference or offset size is not a power of two. - -- Issue #21455: Add a default backlog to socket.listen(). - -- Issue #21525: Most Tkinter methods which accepted tuples now accept lists too. - -- Issue #22166: With the assistance of a new internal _codecs._forget_codec - helping function, test_codecs now clears the encoding caches to avoid the - appearance of a reference leak - -- Issue #22236: Tkinter tests now don't reuse default root window. New root - window is created for every test class. - -- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial - shape. - -- Issue #20826: Optimize ipaddress.collapse_addresses(). - -- Issue #21487: Optimize ipaddress.summarize_address_range() and - ipaddress.{IPv4Network,IPv6Network}.subnets(). - -- Issue #21486: Optimize parsing of netmasks in ipaddress.IPv4Network and - ipaddress.IPv6Network. - -- Issue #13916: Disallowed the surrogatepass error handler for non UTF-\* - encodings. - -- Issue #20998: Fixed re.fullmatch() of repeated single character pattern - with ignore case. Original patch by Matthew Barnett. - -- Issue #21075: fileinput.FileInput now reads bytes from standard stream if - binary mode is specified. Patch by Sam Kimbrel. - -- Issue #19775: Add a samefile() method to pathlib Path objects. Initial - patch by Vajrasky Kok. - -- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject - (and friends). - -- Issue #21398: Fix a unicode error in the pydoc pager when the documentation - contains characters not encodable to the stdout encoding. - -- Issue #16531: ipaddress.IPv4Network and ipaddress.IPv6Network now accept - an (address, netmask) tuple argument, so as to easily construct network - objects from existing addresses. - -- Issue #21156: importlib.abc.InspectLoader.source_to_code() is now a - staticmethod. - -- Issue #21424: Simplified and optimized heaqp.nlargest() and nmsmallest() - to make fewer tuple comparisons. - -- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a - flush() on the underlying binary stream. Patch by akira. - -- Issue #18314: Unlink now removes junctions on Windows. Patch by Kim Gräsman - -- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. - In porting to Argument Clinic, the first two arguments were reversed. - -- Issue #21407: _decimal: The module now supports function signatures. - -- Issue #10650: Remove the non-standard 'watchexp' parameter from the - Decimal.quantize() method in the Python version. It had never been - present in the C version. - -- Issue #21469: Reduced the risk of false positives in robotparser by - checking to make sure that robots.txt has been read or does not exist - prior to returning True in can_fetch(). - -- Issue #19414: Have the OrderedDict mark deleted links as unusable. - This gives an early failure if the link is deleted during iteration. - -- Issue #21421: Add __slots__ to the MappingViews ABC. - Patch by Josh Rosenberg. - -- Issue #21101: Eliminate double hashing in the C speed-up code for - collections.Counter(). - -- Issue #21321: itertools.islice() now releases the reference to the source - iterator when the slice is exhausted. Patch by Anton Afanasyev. - -- Issue #21057: TextIOWrapper now allows the underlying binary stream's - read() or read1() method to return an arbitrary bytes-like object - (such as a memoryview). Patch by Nikolaus Rath. - -- Issue #20951: SSLSocket.send() now raises either SSLWantReadError or - SSLWantWriteError on a non-blocking socket if the operation would block. - Previously, it would return 0. Patch by Nikolaus Rath. - -- Issue #13248: removed previously deprecated asyncore.dispatcher __getattr__ - cheap inheritance hack. - -- Issue #9815: assertRaises now tries to clear references to local variables - in the exception's traceback. - -- Issue #19940: ssl.cert_time_to_seconds() now interprets the given time - string in the UTC timezone (as specified in RFC 5280), not the local - timezone. - -- Issue #13204: Calling sys.flags.__new__ would crash the interpreter, - now it raises a TypeError. - -- Issue #19385: Make operations on a closed dbm.dumb database always raise the - same exception. - -- Issue #21207: Detect when the os.urandom cached fd has been closed or - replaced, and open it anew. - -- Issue #21291: subprocess's Popen.wait() is now thread safe so that - multiple threads may be calling wait() or poll() on a Popen instance - at the same time without losing the Popen.returncode value. - -- Issue #21127: Path objects can now be instantiated from str subclass - instances (such as ``numpy.str_``). - -- Issue #15002: urllib.response object to use _TemporaryFileWrapper (and - _TemporaryFileCloser) facility. Provides a better way to handle file - descriptor close. Patch contributed by Christian Theune. - -- Issue #12220: mindom now raises a custom ValueError indicating it doesn't - support spaces in URIs instead of letting a 'split' ValueError bubble up. - -- Issue #21068: The ssl.PROTOCOL* constants are now enum members. - -- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. - -- Issue #21262: New method assert_not_called for Mock. - It raises AssertionError if the mock has been called. - -- Issue #21238: New keyword argument `unsafe` to Mock. It raises - `AttributeError` incase of an attribute startswith assert or assret. - -- Issue #20896: ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not - PROTOCOL_SSLv3, for maximum compatibility. - -- Issue #21239: patch.stopall() didn't work deterministically when the same - name was patched more than once. - -- Issue #21203: Updated fileConfig and dictConfig to remove inconsistencies. - Thanks to Jure Koren for the patch. - -- Issue #21222: Passing name keyword argument to mock.create_autospec now - works. - -- Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX. - -- Issue #17498: Some SMTP servers disconnect after certain errors, violating - strict RFC conformance. Instead of losing the error code when we issue the - subsequent RSET, smtplib now returns the error code and defers raising the - SMTPServerDisconnected error until the next command is issued. - -- Issue #17826: setting an iterable side_effect on a mock function created by - create_autospec now works. Patch by Kushal Das. - -- Issue #7776: Fix ``Host:`` header and reconnection when using - http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath. - -- Issue #20968: unittest.mock.MagicMock now supports division. - Patch by Johannes Baiter. - -- Issue #21529 (CVE-2014-4616): Fix arbitrary memory access in - JSONDecoder.raw_decode with a negative second parameter. Bug reported by Guido - Vranken. - -- Issue #21169: getpass now handles non-ascii characters that the - input stream encoding cannot encode by re-encoding using the - replace error handler. - -- Issue #21171: Fixed undocumented filter API of the rot13 codec. - Patch by Berker Peksag. - -- Issue #20539: Improved math.factorial error message for large positive inputs - and changed exception type (OverflowError -> ValueError) for large negative - inputs. - -- Issue #21172: isinstance check relaxed from dict to collections.Mapping. - -- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError - if path and sock are specified at the same time. - -- Issue #21136: Avoid unnecessary normalization of Fractions resulting from - power and other operations. Patch by Raymond Hettinger. - -- Issue #17621: Introduce importlib.util.LazyLoader. - -- Issue #21076: signal module constants were turned into enums. - Patch by Giampaolo Rodola'. - -- Issue #20636: Improved the repr of Tkinter widgets. - -- Issue #19505: The items, keys, and values views of OrderedDict now support - reverse iteration using reversed(). - -- Issue #21149: Improved thread-safety in logging cleanup during interpreter - shutdown. Thanks to Devin Jeanpierre for the patch. - -- Issue #21058: Fix a leak of file descriptor in - :func:`tempfile.NamedTemporaryFile`, close the file descriptor if - :func:`io.open` fails - -- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing. - -- Issue #21013: Enhance ssl.create_default_context() when used for server side - sockets to provide better security by default. - -- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a - TypeError if the second argument is not a string or compiled regex. - -- Issue #20633: Replace relative import by absolute import. - -- Issue #20980: Stop wrapping exception when using ThreadPool. - -- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this - changes behavior of makedirs when exist_ok=True. - -- Issue #20990: Fix issues found by pyflakes for multiprocessing. - -- Issue #21015: SSL contexts will now automatically select an elliptic - curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise - default to "prime256v1". - -- Issue #21000: Improve the command-line interface of json.tool. - -- Issue #20995: Enhance default ciphers used by the ssl module to enable - better security and prioritize perfect forward secrecy. - -- Issue #20884: Don't assume that __file__ is defined on importlib.__init__. - -- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests. - -- Issue #20627: xmlrpc.client.ServerProxy is now a context manager. - -- Issue #19165: The formatter module now raises DeprecationWarning instead of - PendingDeprecationWarning. - -- Issue #13936: Remove the ability of datetime.time instances to be considered - false in boolean contexts. - -- Issue #18931: selectors module now supports /dev/poll on Solaris. - Patch by Giampaolo Rodola'. - -- Issue #19977: When the ``LC_TYPE`` locale is the POSIX locale (``C`` locale), - :py:data:`sys.stdin` and :py:data:`sys.stdout` are now using the - ``surrogateescape`` error handler, instead of the ``strict`` error handler. - -- Issue #20574: Implement incremental decoder for cp65001 code (Windows code - page 65001, Microsoft UTF-8). - -- Issue #20879: Delay the initialization of encoding and decoding tables for - base32, ascii85 and base85 codecs in the base64 module, and delay the - initialization of the unquote_to_bytes() table of the urllib.parse module, to - not waste memory if these modules are not used. - -- Issue #19157: Include the broadcast address in the usuable hosts for IPv6 - in ipaddress. - -- Issue #11599: When an external command (e.g. compiler) fails, distutils now - prints out the whole command line (instead of just the command name) if the - environment variable DISTUTILS_DEBUG is set. - -- Issue #4931: distutils should not produce unhelpful "error: None" messages - anymore. distutils.util.grok_environment_error is kept but doc-deprecated. - -- Issue #20875: Prevent possible gzip "'read' is not defined" NameError. - Patch by Claudiu Popa. - -- Issue #11558: ``email.message.Message.attach`` now returns a more - useful error message if ``attach`` is called on a message for which - ``is_multipart`` is False. - -- Issue #20283: RE pattern methods now accept the string keyword parameters - as documented. The pattern and source keyword parameters are left as - deprecated aliases. - -- Issue #20778: Fix modulefinder to work with bytecode-only modules. - -- Issue #20791: copy.copy() now doesn't make a copy when the input is - a bytes object. Initial patch by Peter Otten. - -- Issue #19748: On AIX, time.mktime() now raises an OverflowError for year - outsize range [1902; 2037]. - -- Issue #19573: inspect.signature: Use enum for parameter kind constants. - -- Issue #20726: inspect.signature: Make Signature and Parameter picklable. - -- Issue #17373: Add inspect.Signature.from_callable method. - -- Issue #20378: Improve repr of inspect.Signature and inspect.Parameter. - -- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for - missing keyword-only arguments. Patch by Jeremiah Lowin. - -- Issue #20817: Fix inspect.getcallargs() to fail correctly if more - than 3 arguments are missing. Patch by Jeremiah Lowin. - -- Issue #6676: Ensure a meaningful exception is raised when attempting - to parse more than one XML document per pyexpat xmlparser instance. - (Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with - suggested wording by David Gutteridge) - -- Issue #21117: Fix inspect.signature to better support functools.partial. - Due to the specifics of functools.partial implementation, - positional-or-keyword arguments passed as keyword arguments become - keyword-only. - -- Issue #20334: inspect.Signature and inspect.Parameter are now hashable. - Thanks to Antony Lee for bug reports and suggestions. - -- Issue #15916: doctest.DocTestSuite returns an empty unittest.TestSuite instead - of raising ValueError if it finds no tests - -- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug - in yield-from implementation in CPythons prior to 3.4.1. - -- asyncio: Add gi_{frame,running,code} properties to CoroWrapper - (upstream issue #163). - -- Issue #21311: Avoid exception in _osx_support with non-standard compiler - configurations. Patch by John Szakmeister. - -- Issue #11571: Ensure that the turtle window becomes the topmost window - when launched on OS X. - -- Issue #21801: Validate that __signature__ is None or an instance of Signature. - -- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler - due to possible uninitialized _config_vars. - -- Issue #21323: Fix http.server to again handle scripts in CGI subdirectories, - broken by the fix for security issue #19435. Patch by Zach Byrne. - -- Issue #22733: Fix ffi_prep_args not zero-extending argument values correctly - on 64-bit Windows. - -- Issue #23302: Default to TCP_NODELAY=1 upon establishing an HTTPConnection. - Removed use of hard-coded MSS as it's an optimization that's no longer needed - with Nagle disabled. - -IDLE ----- - -- Issue #20577: Configuration of the max line length for the FormatParagraph - extension has been moved from the General tab of the Idle preferences dialog - to the FormatParagraph tab of the Config Extensions dialog. - Patch by Tal Einat. - -- Issue #16893: Update Idle doc chapter to match current Idle and add new - information. - -- Issue #3068: Add Idle extension configuration dialog to Options menu. - Changes are written to HOME/.idlerc/config-extensions.cfg. - Original patch by Tal Einat. - -- Issue #16233: A module browser (File : Class Browser, Alt+C) requires an - editor window with a filename. When Class Browser is requested otherwise, - from a shell, output window, or 'Untitled' editor, Idle no longer displays - an error box. It now pops up an Open Module box (Alt+M). If a valid name - is entered and a module is opened, a corresponding browser is also opened. - -- Issue #4832: Save As to type Python files automatically adds .py to the - name you enter (even if your system does not display it). Some systems - automatically add .txt when type is Text files. - -- Issue #21986: Code objects are not normally pickled by the pickle module. - To match this, they are no longer pickled when running under Idle. - -- Issue #17390: Adjust Editor window title; remove 'Python', - move version to end. - -- Issue #14105: Idle debugger breakpoints no longer disappear - when inserting or deleting lines. - -- Issue #17172: Turtledemo can now be run from Idle. - Currently, the entry is on the Help menu, but it may move to Run. - Patch by Ramchandra Apt and Lita Cho. - -- Issue #21765: Add support for non-ascii identifiers to HyperParser. - -- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav - Heblikar. - -- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster. - -- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar. - -- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav - Heblikar. - -- Issue #12387: Add missing upper(lower)case versions of default Windows key - bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy. - -- Issue #21695: Closing a Find-in-files output window while the search is - still in progress no longer closes Idle. - -- Issue #18910: Add unittest for textView. Patch by Phil Webster. - -- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar. - -- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster. - -- Issue #21477: htest.py - Improve framework, complete set of tests. - Patches by Saimadhav Heblikar - -- Issue #18104: Add idlelib/idle_test/htest.py with a few sample tests to begin - consolidating and improving human-validated tests of Idle. Change other files - as needed to work with htest. Running the module as __main__ runs all tests. - -- Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation. - -- Issue #21284: Paragraph reformat test passes after user changes reformat width. - -- Issue #17654: Ensure IDLE menus are customized properly on OS X for - non-framework builds and for all variants of Tk. - -- Issue #23180: Rename IDLE "Windows" menu item to "Window". - Patch by Al Sweigart. - -Build ------ - -- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure - script. - -- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support - SSL 3. - -- Issue #22592: Drop support of the Borland C compiler to build Python. The - distutils module still supports it to build extensions. - -- Issue #22591: Drop support of MS-DOS, especially of the DJGPP compiler - (MS-DOS port of GCC). - -- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by - Jonathan Hosmer. - -- Issue #22359: Remove incorrect uses of recursive make. Patch by Jonas - Wagner. - -- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and - above. Patch by Zachary Turner. - -- Issue #18093: the programs that embed the CPython runtime are now in a - separate "Programs" directory, rather than being kept in the Modules - directory. - -- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ - now display special message when and only when there are failures. - -- Issue #21141: The Windows build process no longer attempts to find Perl, - instead relying on OpenSSL source being configured and ready to build. The - ``PCbuild\build_ssl.py`` script has been re-written and re-named to - ``PCbuild\prepare_ssl.py``, and takes care of configuring OpenSSL source - for both 32 and 64 bit platforms. OpenSSL sources obtained from - svn.python.org will always be pre-configured and ready to build. - -- Issue #21037: Add a build option to enable AddressSanitizer support. - -- Issue #19962: The Windows build process now creates "python.bat" in the - root of the source tree, which passes all arguments through to the most - recently built interpreter. - -- Issue #21285: Refactor and fix curses configure check to always search - in a ncursesw directory. - -- Issue #15234: For BerkelyDB and Sqlite, only add the found library and - include directories if they aren't already being searched. This avoids - an explicit runtime library dependency. - -- Issue #17861: Tools/scripts/generate_opcode_h.py automatically regenerates - Include/opcode.h from Lib/opcode.py if the latter gets any change. - -- Issue #20644: OS X installer build support for documentation build changes - in 3.4.1: assume externally supplied sphinx-build is available in /usr/bin. - -- Issue #20022: Eliminate use of deprecated bundlebuilder in OS X builds. - -- Issue #15968: Incorporated Tcl, Tk, and Tix builds into the Windows build - solution. - -- Issue #17095: Fix Modules/Setup *shared* support. - -- Issue #21811: Anticipated fixes to support OS X versions > 10.9. - -- Issue #21166: Prevent possible segfaults and other random failures of - python --generate-posix-vars in pybuilddir.txt build target. - -- Issue #18096: Fix library order returned by python-config. - -- Issue #17219: Add library build dir for Python extension cross-builds. - -- Issue #22919: Windows build updated to support VC 14.0 (Visual Studio 2015), - which will be used for the official release. - -- Issue #21236: Build _msi.pyd with cabinet.lib instead of fci.lib - -- Issue #17128: Use private version of OpenSSL for OS X 10.5+ installer. - -C API ------ - -- Issue #14203: Remove obsolete support for view==NULL in PyBuffer_FillInfo(), - bytearray_getbuffer(), bytesiobuf_getbuffer() and array_buffer_getbuf(). - All functions now raise BufferError in that case. - -- Issue #22445: PyBuffer_IsContiguous() now implements precise contiguity - tests, compatible with NumPy's NPY_RELAXED_STRIDES_CHECKING compilation - flag. Previously the function reported false negatives for corner cases. - -- Issue #22079: PyType_Ready() now checks that statically allocated type has - no dynamically allocated bases. - -- Issue #22453: Removed non-documented macro PyObject_REPR(). - -- Issue #18395: Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`, - rename ``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document - these functions. - -- Issue #21233: Add new C functions: PyMem_RawCalloc(), PyMem_Calloc(), - PyObject_Calloc(), _PyObject_GC_Calloc(). bytes(int) is now using - ``calloc()`` instead of ``malloc()`` for large objects which is faster and - use less memory. - -- Issue #20942: PyImport_ImportFrozenModuleObject() no longer sets __file__ to - match what importlib does; this affects _frozen_importlib as well as any - module loaded using imp.init_frozen(). - -Documentation -------------- - -- Issue #19548: Update the codecs module documentation to better cover the - distinction between text encodings and other codecs, together with other - clarifications. Patch by Martin Panter. - -- Issue #22394: Doc/Makefile now supports ``make venv PYTHON=../python`` to - create a venv for generating the documentation, e.g., - ``make html PYTHON=venv/bin/python3``. - -- Issue #21514: The documentation of the json module now refers to new JSON RFC - 7159 instead of obsoleted RFC 4627. - -- Issue #21777: The binary sequence methods on bytes and bytearray are now - documented explicitly, rather than assuming users will be able to derive - the expected behaviour from the behaviour of the corresponding str methods. - -- Issue #6916: undocument deprecated asynchat.fifo class. - -- Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make - it much more comparable to ``Doc/Makefile``. - -- Issue #21312: Update the thread_foobar.h template file to include newer - threading APIs. Patch by Jack McCracken. - -- Issue #21043: Remove the recommendation for specific CA organizations and to - mention the ability to load the OS certificates. - -- Issue #20765: Add missing documentation for PurePath.with_name() and - PurePath.with_suffix(). - -- Issue #19407: New package installation and distribution guides based on - the Python Packaging Authority tools. Existing guides have been retained - as legacy links from the distutils docs, as they still contain some - required reference material for tool developers that isn't recorded - anywhere else. - -- Issue #19697: Document cases where __main__.__spec__ is None. - -Tests ------ - -- Issue #18982: Add tests for CLI of the calendar module. - -- Issue #19548: Added some additional checks to test_codecs to ensure that - statements in the updated documentation remain accurate. Patch by Martin - Panter. - -- Issue #22838: All test_re tests now work with unittest test discovery. - -- Issue #22173: Update lib2to3 tests to use unittest test discovery. - -- Issue #16000: Convert test_curses to use unittest. - -- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not - present. Patch by Remi Pointel. - -- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier - de Gaye. - -- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it - now uses unittest test discovery to find its tests. - -- Issue #22104: regrtest.py no longer holds a reference to the suite of tests - loaded from test modules that don't define test_main(). - -- Issue #22111: Assorted cleanups in test_imaplib. Patch by Milan Oberkirch. - -- Issue #22002: Added ``load_package_tests`` function to test.support and used - it to implement/augment test discovery in test_asyncio, test_email, - test_importlib, test_json, and test_tools. - -- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks - to William Orr. - -- Issue #21918: Converted test_tools from a module to a package containing - separate test files for each tested script. - -- Issue #9554: Use modern unittest features in test_argparse. Initial patch by - Denver Coneybeare and Radu Voicilas. - -- Issue #20155: Changed HTTP method names in failing tests in test_httpservers - so that packet filtering software (specifically Windows Base Filtering Engine) - does not interfere with the transaction semantics expected by the tests. - -- Issue #19493: Refactored the ctypes test package to skip tests explicitly - rather than silently. - -- Issue #18492: All resources are now allowed when tests are not run by - regrtest.py. - -- Issue #21634: Fix pystone micro-benchmark: use floor division instead of true - division to benchmark integers instead of floating point numbers. Set pystone - version to 1.2. Patch written by Lennart Regebro. - -- Issue #21605: Added tests for Tkinter images. - -- Issue #21493: Added test for ntpath.expanduser(). Original patch by - Claudiu Popa. - -- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok. - -- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(), - PanedWindow.paneconfigure(), and Menu.entryconfigure(). - -- Issue #17756: Fix test_code test when run from the installed location. - -- Issue #17752: Fix distutils tests when run from the installed location. - -- Issue #18604: Consolidated checks for GUI availability. All platforms now - at least check whether Tk can be instantiated when the GUI resource is - requested. - -- Issue #21275: Fix a socket test on KFreeBSD. - -- Issue #21223: Pass test_site/test_startup_imports when some of the extensions - are built as builtins. - -- Issue #20635: Added tests for Tk geometry managers. - -- Add test case for freeze. - -- Issue #20743: Fix a reference leak in test_tcl. - -- Issue #21097: Move test_namespace_pkgs into test_importlib. - -- Issue #21503: Use test_both() consistently in test_importlib. - -- Issue #20939: Avoid various network test failures due to new - redirect of http://www.python.org/ to https://www.python.org: - use http://www.example.com instead. - -- Issue #20668: asyncio tests no longer rely on tests.txt file. - (Patch by Vajrasky Kok) - -- Issue #21093: Prevent failures of ctypes test_macholib on OS X if a - copy of libz exists in $HOME/lib or /usr/local/lib. - -- Issue #22770: Prevent some Tk segfaults on OS X when running gui tests. - -- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems. - -- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level - values (like 0.9.8zc). - -Tools/Demos ------------ - -- Issue #22314: pydoc now works when the LINES environment variable is set. - -- Issue #22615: Argument Clinic now supports the "type" argument for the - int converter. This permits using the int converter with enums and - typedefs. - -- Issue #20076: The makelocalealias.py script no longer ignores UTF-8 mapping. - -- Issue #20079: The makelocalealias.py script now can parse the SUPPORTED file - from glibc sources and supports command line options for source paths. - -- Issue #22201: Command-line interface of the zipfile module now correctly - extracts ZIP files with directory entries. Patch by Ryan Wilson. - -- Issue #22120: For functions using an unsigned integer return converter, - Argument Clinic now generates a cast to that type for the comparison - to -1 in the generated code. (This suppresses a compilation warning.) - -- Issue #18974: Tools/scripts/diff.py now uses argparse instead of optparse. - -- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3. - Patch by Zachary Ware. - -- Issue #21629: Fix Argument Clinic's "--converters" feature. - -- Add support for ``yield from`` to 2to3. - -- Add support for the PEP 465 matrix multiplication operator to 2to3. - -- Issue #16047: Fix module exception list and __file__ handling in freeze. - Patch by Meador Inge. - -- Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge. - -- Issue #20535: PYTHONWARNING no longer affects the run_tests.py script. - Patch by Arfrever Frehtes Taifersar Arahesis. - -Windows -------- - -- Issue #23260: Update Windows installer - -- The bundled version of Tcl/Tk has been updated to 8.6.3. The most visible - result of this change is the addition of new native file dialogs when - running on Windows Vista or newer. See Tcl/Tk's TIP 432 for more - information. Also, this version of Tcl/Tk includes support for Windows 10. - -- Issue #17896: The Windows build scripts now expect external library sources - to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``. - -- Issue #17717: The Windows build scripts now use a copy of NASM pulled from - svn.python.org to build OpenSSL. - -- Issue #21907: Improved the batch scripts provided for building Python. - -- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j. - -- Issue #10747: Use versioned labels in the Windows start menu. - Patch by Olive Kilburn. - -- Issue #22980: .pyd files with a version and platform tag (for example, - ".cp35-win32.pyd") will now be loaded in preference to those without tags. - - -**(For information about older versions, consult the HISTORY file.)** |