From b2df6319e3a3bd5cecebd2b3ca8e95b0cc87b554 Mon Sep 17 00:00:00 2001 From: Ned Deily Date: Fri, 20 Jan 2017 10:35:46 -0500 Subject: Update Misc/NEWS and Misc/HISTORY from current 3.5 and 3.4 branches. --- Misc/HISTORY | 2244 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++- Misc/NEWS | 1474 +++++++++++++++++++++++++++++++++++++- 2 files changed, 3669 insertions(+), 49 deletions(-) diff --git a/Misc/HISTORY b/Misc/HISTORY index 73ec926..4ce431f 100644 --- a/Misc/HISTORY +++ b/Misc/HISTORY @@ -7,6 +7,2191 @@ As you read on you go back to the dark ages of Python's history. ====================================================================== +What's New in Python 3.4.6? +=========================== + +Release date: 2017-01-17 + +There were no changes between 3.4.6rc1 and 3.4.6 final. + + +What's New in Python 3.4.6rc1? +============================== + +Release date: 2017-01-02 + +Core and Builtins +----------------- + +- Issue #28648: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X + when decode astral characters. Patch by Xiang Zhang. + +- Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug + build. + +Library +------- + +- 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. + +- 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 #27759: Fix selectors incorrectly retain invalid file descriptors. + Patch by Mark Williams. + +Build +----- + +- Issue #28248: Update Windows build to use OpenSSL 1.0.2j. + +Tests +----- + +- Issue #27369: In test_pyexpat, avoid testing an error message detail that + changed in Expat 2.2.0. + + +What's New in Python 3.4.5? +=========================== + +Release date: 2016-06-26 + +Tests +----- + +- Issue #26867: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test. + + +What's New in Python 3.4.5rc1? +============================== + +Release date: 2016-06-11 + +Core and Builtins +----------------- + +- 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(). + +Library +------- + +- Issue #26556: Update expat to 2.1.1, fixes CVE-2015-1283. + +- Fix TLS stripping vulnerability in smptlib, CVE-2016-0772. Reported by Team + Oststrom + +- Issue #25939: On Windows open the cert store readonly in ssl.enum_certificates. + +- 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. + +- Skip getaddrinfo if host is already resolved. + Patch by A. Jesse Jiryu Davis. + +- Add asyncio.timeout() context manager. + +- Issue #26050: Add asyncio.StreamReader.readuntil() method. + Patch by Марк Коренберг. + +Tests +----- + +- Issue #25940: Changed test_ssl to use self-signed.pythontest.net. This + avoids relying on svn.python.org, which recently changed root certificate. + + +What's New in Python 3.4.4? +=========================== + +Release date: 2015/12/20 + +Windows +------- + +- Issue #25844: Corrected =/== typo potentially leading to crash in launcher. + + +What's New in Python 3.4.4rc1? +============================== + +Release date: 2015/12/06 + +Core and Builtins +----------------- + +- Issue #25709: Fixed problem with in-place string concatenation and utf-8 + cache. + +- 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 #25388: Fixed tokenizer crash when processing undecodable source code + with a null byte. + +- 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 #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: os.urandom() doesn't use getentropy() on Solaris because + getentropy() is blocking, whereas os.urandom() should not block. getentropy() + is supported since Solaris 11.3. + +- Issue #25182: The stdprinter (used as sys.stderr before the io module is + imported at startup) now uses the backslashreplace error handler. + +- 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 #21167: NAN operations are now handled correctly when python is + compiled with ICC even if -fp-model strict is not specified. + +- Issue #4395: Better testing and documentation of binary operators. + Patch by Martin Panter. + +- 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. + +- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(), + PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains() + to check for and handle errors correctly. + +- 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 #23757: PySequence_Tuple() incorrectly called the concrete list API + when the data was a list subclass. + +- Issue #24407: Fix crash when dict is mutated while being updated. + +- 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 #24022: Fix tokenizer crash when processing undecodable source code. + +- 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 #23803: Fixed str.partition() and str.rpartition() when a separator + is wider then partitioned string. + +- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet. + +- Issue #23629: Fix the default __sizeof__ implementation for variable-sized + objects. + +- 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 #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 #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. + +- 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 #25578: Fix (another) memory leak in SSLSocket.getpeercer(). + +- 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 3.4.3. Based + on patch by Eryksun. + +- Issue #18010: Fix the pydoc web server's module search function to handle + exceptions from importing packages. + +- 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 #25530: Disable the vulnerable SSLv3 protocol by default when creating + ssl.SSLContext. + +- Issue #25569: Fix memory leak in SSLSocket.getpeercert(). + +- 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 #25471: Sockets returned from accept() shouldn't appear to be + nonblocking. + +- Issue #25441: asyncio: Raise error from drain() when socket is closed. + +- Issue #25411: Improved Unicode support in SMTPHandler through better use of + the email package. Thanks to user simon04 for the patch. + +- 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 #25319: When threading.Event is reinitialized, the underlying condition + should use a regular lock rather than a recursive lock. + +- 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 #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 #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 #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. + +- 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 #19143: platform module now reads Windows version from kernel32.dll to + avoid compatibility shims. + +- 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 zero (ROUND_DOWN). 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 #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 #24982: shutil.make_archive() with the "zip" format now adds entries + for directories (including empty directories) in ZIP file. + +- 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 #25019: Fixed a crash caused by setting non-string key of expat parser. + Based on patch by John Leitch. + +- Issue #24917: time_strftime() buffer over-read. + +- Issue #23144: Make sure that HTMLParser.feed() returns all the data, even + when convert_charrefs is True. + +- Issue #16180: Exit pdb if file has syntax error, instead of trapping user + in an infinite loop. Patch by Xavier de Gaye. + +- Issue #21112: Fix regression in unittest.expectedFailure on subclasses. + Patch from Berker Peksag. + +- Issue #24931: Instances of subclasses of namedtuples have their own __dict__ + which breaks the inherited __dict__ property and breaks the _asdict() method. + Removed the __dict__ property to prevent the conflict and fixed _asdict(). + +- 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 #24774: Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu. + +- Issue #21159: Improve message in configparser.InterpolationMissingOptionError. + Patch from Łukasz Langa. + +- Issue #23888: Handle fractional time in cookie expiry. Patch by ssh. + +- Issue #23004: mock_open() now reads binary data correctly when the type of + read_data is bytes. Initial patch by Aaron Hill. + +- 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 #23441: rcompleter now prints a tab character instead of displaying + possible completions for an empty word. Initial patch by Martin Sekera. + +- Issue #24735: Fix invalid memory access in + itertools.combinations_with_replacement(). + +- Issue #17527: Add PATCH to wsgiref.validator. Patch from Luca Sbardella. + +- 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 #24620: Random.setstate() now validates the value of state last element. + +- Issue #22153: Improve unittest docs. Patch from Martin Panter and evilzero. + +- Issue #24206: Fixed __eq__ and __ne__ methods of inspect classes. + +- Issue #21750: mock_open.read_data can now be read from each instance, as it + could in Python 3.3. + +- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs. + +- Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely. + Patch from Nicola Palumbo and Laurent De Buyst. + +- 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 #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 #24489: ensure a previously set C errno doesn't disturb cmath.polar(). + +- 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 #23840: tokenize.open() now closes the temporary binary file on error + to fix a resource warning. + +- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked + cursor type. + +- 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 #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 #23796: peek and read1 methods of BufferedReader now raise ValueError + if they called on a closed object. Patch by John Hergenroeder. + +- Issue #24521: Fix possible integer overflows in the pickle module. + +- Issue #22931: Allow '[' and ']' in cookie values. + +- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three + METH_VARARGS methods on _sqlite.Connection. + +- Issue #24094: Fix possible crash in json.encode with poorly behaved dict + subclasses. + +- Asyncio issue 222 / PR 231 (Victor Stinner) -- fix @coroutine + functions without __name__. + +- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes. + Patch written by William Orr. + +- The keywords attribute of functools.partial is now always a dictionary. + +- Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq's siftup + and siftdown functions. + +- Backport collections.deque fixes from Python 3.5. Prevents reentrant badness + during deletion by deferring the decref until the container has been restored + to a consistent state. + +- 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 in 3.4.3 when + JoinableQueue was merged with Queue). + +- Issue #23908: os functions now reject paths with embedded null character + on Windows instead of silently truncate them. + +- Issue #23728: binascii.crc_hqx() could return an integer outside of the range + 0-0xffff for empty data. + +- Issue #23811: Add missing newline to the PyCompileError error message. + Patch by Alex Shkop. + +- Issue #17898: Fix exception in gettext.py when parsing certain plural forms. + +- Issue #22982: Improve BOM handling when seeking to multiple positions of + a writable text file. + +- 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 #23881: urllib.request.ftpwrapper constructor now closes the socket if + the FTP connection failed to fix a ResourceWarning. + +- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not + available. Patch by Davin Potts. + +- 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 #23338: Fixed formatting ctypes error messages on Cygwin. + Patch by Makoto Kato. + +- 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 #21526: Tkinter now supports new boolean type in Tcl 8.5. + +- Issue #23838: linecache now clears the cache and returns an empty result on + MemoryError. + +- 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 #23745: The new email header parser now handles duplicate MIME + parameter names without error, similar to how get_param behaves. + +- 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 #23742: ntpath.expandvars() no longer loses unbalanced single quotes. + +- Issue #21802: The reader in BufferedRWPair now is closed even when closing + writer failed in BufferedRWPair.close(). + +- Issue #23671: string.Template now allows to specify the "self" parameter as + keyword argument. string.Formatter now allows to specify the "self" and + the "format_string" parameters as keyword arguments. + +- Issue #21560: An attempt to write a data of wrong type no longer cause + GzipFile corruption. Original patch by Wolfgang Maier. + +- 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 #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 #23568: Add rdivmod support to MagicMock() objects. + Patch by Håkan Lövdahl. + +- 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 #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 #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 #20204: Added the __module__ attribute to _tkinter classes. + +- 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 #6639: Module-level turtle functions no longer raise TclError after + closing the window. + +- Issues #814253, #9179: Warnings now are raised when group references and + conditional group references are used 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 #23146: Fix mishandling of absolute Windows paths with forward + slashes in pathlib. + +- 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. + +- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the + entire preamble to a multipart body. + +- Issue #23310: Fix MagicMock's initializer to work with __methods__, just + like configure_mock(). Patch by Kasia Jachim. + +- asyncio: New event loop APIs: set_task_factory() and get_task_factory(). + +- asyncio: async() function is deprecated in favour of ensure_future(). + +- 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. + +- Issue #23572: Fixed functools.singledispatch on classes with falsy + metaclasses. Patch by Ethan Furman. + +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). + +- 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. + +- Issue #23184: remove unused names and imports in idlelib. + Initial patch by Al Sweigart. + +Tests +----- + +- Issue #25616: Tests for OrderedDict are extracted from test_collections + into separate file test_ordered_dict. + +- 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 #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. + +- Issue #21520: test_zipfile no longer fails if the word 'bad' appears + anywhere in the name of the current directory. + +- 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. + +- Issue #23583: Added tests for standard IO streams in IDLE. + +Build +----- + +- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make + the resulting executable faster. + +- Issue #24603: Update Windows builds to use OpenSSL1.0.2d + and OS X 10.5 installer to use OpenSSL 1.0.2e. + +C API +----- + +- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error + +Documentation +------------- + +- 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 #24808: Update the types of some PyTypeObject fields. Patch by + Joseph Weston. + +- Issue #22812: Fix unittest discovery examples. + Patch from Pam McA'Nulty. + +- 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. + +- Issue #24351: Clarify what is meant by "identifier" in the context of + string.Template instances. + +- 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 #25440: Fix output of python-config --extension-suffix. + +- Issue #23330: h2py now supports arbitrary filenames in #include. + +- Issue #24031: make patchcheck now supports git checkouts, too. + +Windows +------- + +- Issue #24306: Sets component ID for launcher to match 3.5 and later + to avoid downgrading. + +- Issue #25022: Removed very outdated PC/example_nt/ directory. + + +What's New in Python 3.4.3? +=========================== + +Release date: 2015-02-23 + +Core and Builtins +----------------- + +- 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 #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 #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 #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 #22604: Fix assertion error in debug mode when dividing a complex + number by (nan+0j). + +- Issue #22470: Fixed integer overflow issues in "backslashreplace", + "xmlcharrefreplace", and "surrogatepass" error handlers. + +- 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 #23165: Perform overflow checks before allocating memory in the + _Py_char2wchar function. + +Library +------- + +- Issue #23399: pyvenv creates relative symlinks where possible. + +- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to + prevent corrupting exported buffer. + +- 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 #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 #23248: Update ssl error codes from latest OpenSSL git master. + +- Issue #23098: 64-bit dev_t is now supported in the os module. + +- 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.close() now clears its internal + reference to the selector mapping to break a reference cycle. Initial patch + written by Martin Richard. + +- 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 #20896, #22935: The :func:`ssl.get_server_certificate` function now + uses the :data:`~ssl.PROTOCOL_SSLv23` protocol by default, not + :data:`~ssl.PROTOCOL_SSLv3`, for maximum compatibility and support platforms + where :data:`~ssl.PROTOCOL_SSLv3` support is disabled. + +- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol + version. + +- Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering. + +- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), + instead of reading /dev/urandom, to get pseudo-random bytes. + +- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and + fragment when it redirects to add a trailing slash. + +- Issue #23093: In the io, module allow more operations to work on detached + streams. + +- Issue #19104: pprint now produces evaluable output for wrapped strings. + +- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter. + +- 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 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 #22959: In the constructor of http.client.HTTPSConnection, prefer the + context's check_hostname attribute over the *check_hostname* parameter. + +- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode + will return. This resolves CVE-2013-1753. + +- 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 #22960: Add a context argument to xmlrpclib.ServerProxy constructor. + +- 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 #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 #22638: SSLv3 is now disabled throughout the standard library. + It can still be enabled by instantiating a SSLContext manually. + +- Issue #22370: Windows detection in pathlib is now more robust. + +- Issue #22841: Reject coroutines in asyncio add_signal_handler(). + Patch by Ludovic.Gasc. + +- 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 #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 #22366: urllib.request.urlopen will accept a context object + (SSLContext) as an argument which will then used be for HTTPS connection. + Patch by Alex Gaynor. + +- 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 #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 #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 #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 #22641: In asyncio, the default SSL context for client connections + is now created using ssl.create_default_context(), for stronger security. + +- 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 #22462: Fix pyexpat's creation of a dummy frame to make it + appear in exception tracebacks. + +- 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 #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 #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 #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 a io.BufferedRWPair object is deallocated, clear its + weakrefs. + +- Issue #22448: Improve canceled timer handles cleanup to prevent + unbound memory usage. Patch by Joshua Moore-Oliva. + +- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no + FD is registered. + +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 #23180: Rename IDLE "Windows" menu item to "Window". + Patch by Al Sweigart. + +Tests +----- + +- Issue #23392: Added tests for marshal C API that works with FILE*. + +- 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 #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). + +- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. + +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 #16537: Check whether self.extensions is empty in setup.py. Patch by + Jonathan Hosmer. + +- Issue #18096: Fix library order returned by python-config. + +- Issue #17219: Add library build dir for Python extension cross-builds. + +- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer. + +C API +----- + +- Issue #22079: PyType_Ready() now checks that statically allocated type has + no dynamically allocated bases. + +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 #22914: Update the Python 2/3 porting HOWTO to describe a more automated + approach. + +- Issue #21514: The documentation of the json module now refers to new JSON RFC + 7159 instead of obsoleted RFC 4627. + +Tools/Demos +----------- + +- Issue #22314: pydoc now works when the LINES environment variable is set. + +Windows +------- + +- 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 #22644: The bundled version of OpenSSL has been updated to 1.0.1j. + + +What's New in Python 3.4.2? +=========================== + +Release date: 2014-10-06 + +Library +------- + +- 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 #22427: TemporaryDirectory no longer attempts to clean up twice when + used in the with statement in generator. + +- 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 #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. + + +What's New in Python 3.4.2rc1? +============================== + +Release date: 2014-09-22 + +Core and Builtins +----------------- + +- Issue #22258: Fix the 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 #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. + +Library +------- + +- Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now + a method. Since EmailMessage is provisional, we can change the API in a + maintenance release, but we use a trick to remain backward compatible with + 3.4.0/1. + +- 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 #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 #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 truncate it. Based on patch by Victor Stinner. + +- 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 #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 #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 #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 #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 #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 #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode. + +- Issue #22191: Fix warnings.__all__. + +- 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 #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 #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 #21580: Now Tkinter correctly handles bytes arguments passed to Tk. + In particular this allows to initialize images from binary data. + +- 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. + +- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError + on closed socket. repr(socket.socket) already works fine. + +- 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 #21888: plistlib's load() and loads() now work if the fmt parameter is + specified. + +- Issue #21044: tarfile.open() now handles fileobj with an integer 'name' + attribute. Based on patch by Antoine Pietri. + +- Issue #21867: Prevent turtle crash due to invalid undo buffer size. + +- Issue #19076: Don't pass the redundant 'file' argument to self.error(). + +- 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 #21897: Fix a crash with the f_locals attribute with closure + variables when frame.clear() has been called. + +- 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 #21781: ssl.RAND_add() now supports strings longer than 2 GB. + +- 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 #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 #21832: Require named tuple inputs to be exact strings. + +- Issue #19145: The times argument for itertools.repeat now handles + negative values the same way for keyword arguments as it does for + positional arguments. + +- Issue #21812: turtle.shapetransform did not tranform the turtle on the + first call. (Issue identified and fixed by Lita Cho.) + +- Issue #21635: The difflib SequenceMatcher.get_matching_blocks() method + cache didn't match the actual result. The former was a list of tuples + and the latter was a list of named tuples. + +- 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 #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 #21774: Fixed NameError for an incorrect variable reference in the + XML Minidom code for creating processing instructions. + (Found and fixed by Claudiu Popa.) + +- 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 #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 #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 #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 #21402: tkinter.ttk now works when default root window is not set. + +- 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 #14710: pkgutil.get_loader() no longer raises an exception when None is + found in sys.modules. + +- Issue #14710: pkgutil.find_loader() no longer raises an exception when a + module doesn't exist. + +- Issue #21481: Argparse equality and inequality tests now return + NotImplemented when comparing to an unknown type. + +- Issue #8743: Fix interoperability between set objects and the + collections.Set() abstract base class. + +- Issue #13355: random.triangular() no longer fails with a ZeroDivisionError + when low equals high. + +- Issue #21538: The plistlib module now supports loading of binary plist files + when reference or offset size is not a power of two. + +- 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. + +Extension Modules +----------------- + +- 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. + +Build +----- + +- Issue #15661: python.org OS X installers are now distributed as signed + installer packages compatible with the Gatekeeper security feature. + +- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and + above. Patch by Zachary Turner. + +- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ + now display special message when and only when there are failures. + +- 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. + +IDLE +---- + +- Issue #17390: Adjust Editor window title; remove 'Python', + move version to end. + +- Issue #14105: Idle debugger breakpoints no longer disappear + when inseting 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. + +Tests +----- + +- 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 #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 #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 #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(). + +Documentation +------------- + +- 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. + +Windows +------- + +- Issue #21671, #22160, CVE-2014-0224: The bundled version of OpenSSL has been + updated to 1.0.1i. + +- Issue #10747: Use versioned labels in the Windows start menu. + Patch by Olive Kilburn. + +Tools/Demos +----------- + +- Issue #22201: Command-line interface of the zipfile module now correctly + extracts ZIP files with directory entries. Patch by Ryan Wilson. + +- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3. + Patch by Zachary Ware. + +- Issue #21629: Fix Argument Clinic's "--converters" feature. + + +What's New in Python 3.4.1? +=========================== + +Release date: 2014-05-18 + +Core and Builtins +----------------- + +- 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. + +Library +------- + +- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial + shape. + +- 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 #21396: Fix TextIOWrapper(..., write_through=True) to not force a + flush() on the underlying binary stream. Patch by akira. + +- Issue #21470: Do a better job seeding the random number generator by + using enough bytes to span the full state space of the Mersenne Twister. + +- Issue #21398: Fix an unicode error in the pydoc pager when the documentation + contains characters not encodable to the stdout encoding. + +Tests +----- + +- Issue #17756: Fix test_code test when run from the installed location. + +- Issue #17752: Fix distutils tests when run from the installed location. + +IDLE +---- + +- 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. + + +What's New in Python 3.4.1rc1? +============================== + +Release date: 2014-05-05 + +Core and Builtins +----------------- + +- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. + +- Issue #21209: Fix sending tuples to custom generator objects with the yield + from syntax. + +- 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 #12546: Allow ``\x00`` to be used as a fill character when using str, int, + float, and complex __format__ methods. + +- 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. + +Library +------- + +- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. + In porting to Argument Clinic, the first two arguments were reversed. + +- 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 #21321: itertools.islice() now releases the reference to the source + iterator when the slice is exhausted. Patch by Anton Afanasyev. + +- Issue #9815: assertRaises now tries to clear references to local variables + in the exception's traceback. + +- 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 #21239: patch.stopall() didn't work deterministically when the same + name was patched more than once. + +- 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 #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 #21149: Improved thread-safety in logging cleanup during interpreter + shutdown. Thanks to Devin Jeanpierre for the patch. + +- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a + TypeError if the second argument is not a string or compiled regex. + +- 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 #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 #20995: Enhance default ciphers used by the ssl module to enable + better security an 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 #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 #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 #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. + +Extension Modules +----------------- + +- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. + +- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject + (and friends). + +IDLE +---- + +- 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. + +Build +----- + +- The Windows build now includes OpenSSL 1.0.1g + +- 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 #20644: OS X installer build support for documentation build changes + in 3.4.1: assume externally supplied sphinx-build is available in /usr/bin. + +C API +----- + +- 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 #17386: Expanded functionality of the ``Doc/make.bat`` script to make + it much more comparable to ``Doc/Makefile``. + +- 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 #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 #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. + +Tools/Demos +----------- + +- 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. + What's New in Python 3.4.0? =========================== @@ -154,7 +2339,7 @@ Core and Builtins - Issue #20588: Make Python-ast.c C89 compliant. -- Issue #20437: Fixed 22 potential bugs when deleting object references. +- Issue #20437: Fixed 22 potential bugs when deleting objects references. - Issue #20500: Displaying an exception at interpreter shutdown no longer risks triggering an assertion failure in PyObject_Str. @@ -1059,8 +3244,8 @@ Core and Builtins when the creation of the replacement exception won't lose any information. - Issue #19466: Clear the frames of daemon threads earlier during the - Python shutdown to call object destructors. So "unclosed file" resource - warnings are now correctly emitted for daemon threads. + Python shutdown to call objects destructors. So "unclosed file" resource + warnings are now corretly emitted for daemon threads. - Issue #19514: Deduplicate some _Py_IDENTIFIER declarations. Patch by Andrei Dorian Duma. @@ -1077,9 +3262,6 @@ Core and Builtins - Issue #19369: Optimized the usage of __length_hint__(). -- Issue #28026: Raise ImportError when exec_module() exists but - create_module() is missing. - - Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the Python executable and not removed by the linker's optimizer. @@ -1204,8 +3386,8 @@ Library - Issue #19448: Add private API to SSL module to lookup ASN.1 objects by OID, NID, short name and long name. -- Issue #19282: dbm.open now supports the context management protocol. - (Initial patch by Claudiu Popa) +- Issue #19282: dbm.open now supports the context management protocol. (Inital + patch by Claudiu Popa) - Issue #8311: Added support for writing any bytes-like objects in the aifc, sunau, and wave modules. @@ -1299,7 +3481,7 @@ Library - Issue #19227: Remove pthread_atfork() handler. The handler was added to solve #18747 but has caused issues. -- Issue #19420: Fix reference leak in module initialization code of +- Issue #19420: Fix reference leak in module initalization code of _hashopenssl.c - Issue #19329: Optimized compiling charsets in regular expressions. @@ -1967,9 +4149,6 @@ Library - Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj argument. -- Issue #17211: Yield a namedtuple in pkgutil. - Patch by Ramchandra Apte. - - Issue #18324: set_payload now correctly handles binary input. This also supersedes the previous fixes for #14360, #1717, and #16564. @@ -1979,8 +4158,6 @@ Library - Issue #17119: Fixed integer overflows when processing large strings and tuples in the tkinter module. -- Issue #15352: Rebuild frozen modules when marshal.c is changed. - - Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork. A pthread_atfork() parent handler is used to seed the PRNG with pid, time and some stack data. @@ -1998,7 +4175,7 @@ Library - Issue #18709: Fix CVE-2013-4238. The SSL module now handles NULL bytes inside subjectAltName correctly. Formerly the module has used OpenSSL's - GENERAL_NAME_print() function to get the string representation of ASN.1 + GENERAL_NAME_print() function to get the string represention of ASN.1 strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and ``uniformResourceIdentifier`` (URI). @@ -2091,7 +4268,7 @@ IDLE Documentation ------------- -- Issue #18743: Fix references to non-existent "StringIO" module. +- Issue #18743: Fix references to non-existant "StringIO" module. - Issue #18783: Removed existing mentions of Python long type in docstrings, error messages and comments. @@ -2188,9 +4365,6 @@ Core and Builtins - Issue #18137: Detect integer overflow on precision in float.__format__() and complex.__format__(). -- Issue #15767: Introduce ModuleNotFoundError which is raised when a module - could not be found. - - Issue #18183: Fix various unicode operations on strings with large unicode codepoints. @@ -2321,7 +4495,7 @@ Core and Builtins - Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.) in the interpreter. -- Issue #17137: When a Unicode string is resized, the internal wide character +- Issue #17137: When an Unicode string is resized, the internal wide character string (wstr) format is now cleared. - Issue #17043: The unicode-internal decoder no longer read past the end of @@ -2658,7 +4832,7 @@ Library on Windows and adds no value over and above python -m pydoc ... - Issue #18155: The csv module now correctly handles csv files that use - a delimiter character that has a special meaning in regexes, instead of + a delimter character that has a special meaning in regexes, instead of throwing an exception. - Issue #14360: encode_quopri can now be successfully used as an encoder @@ -2848,7 +5022,7 @@ Library Thomas Barlow. - Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by - extension load_module()) now have a better chance of working when reloaded. + extention load_module()) now have a better chance of working when reloaded. - Issue #17804: New function ``struct.iter_unpack`` allows for streaming struct unpacking. @@ -2961,8 +5135,8 @@ Library error message has been removed. Patch by Ram Rachum. - Issue #18080: When building a C extension module on OS X, if the compiler - is overridden with the CC environment variable, use the new compiler as - the default for linking if LDSHARED is not also overridden. This restores + is overriden with the CC environment variable, use the new compiler as + the default for linking if LDSHARED is not also overriden. This restores Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0. - Issue #18113: Fixed a refcount leak in the curses.panel module's @@ -3033,7 +5207,7 @@ Library specifically addresses a stack misalignment issue on x86 and issues on some more recent platforms. -- Issue #8862: Fixed curses cleanup when getkey is interrupted by a signal. +- Issue #8862: Fixed curses cleanup when getkey is interrputed by a signal. - Issue #17443: imaplib.IMAP4_stream was using the default unbuffered IO in subprocess, but the imap code assumes buffered IO. In Python2 this @@ -3169,7 +5343,7 @@ Library symlinks on POSIX platforms. - Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the - filename as a URI, allowing custom options to be passed. + filename as a URI, allowing to pass custom options. - Issue #16564: Fixed regression relative to Python2 in the operation of email.encoders.encode_noop when used with binary data. @@ -3208,7 +5382,7 @@ Library internal XML encoding is not UTF-8 or US-ASCII. It also now accepts bytes and strings larger than 2 GiB. -- Issue #6083: Fix multiple segmentation faults occurred when PyArg_ParseTuple +- Issue #6083: Fix multiple segmentation faults occured when PyArg_ParseTuple parses nested mutating sequence. - Issue #5289: Fix ctypes.util.find_library on Solaris. @@ -3430,7 +5604,7 @@ Library - Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later on. Initial patch by SilentGhost and Jeff Ramnani. -- Issue #13120: Allow calling pdb.set_trace() from thread. +- Issue #13120: Allow to call pdb.set_trace() from thread. Patch by Ilya Sandler. - Issue #16585: Make CJK encoders support error handlers that return bytes per @@ -3531,7 +5705,7 @@ Library - Issue #16284: Prevent keeping unnecessary references to worker functions in concurrent.futures ThreadPoolExecutor. -- Issue #16230: Fix a crash in select.select() when one of the lists changes +- Issue #16230: Fix a crash in select.select() when one the lists changes size while iterated on. Patch by Serhiy Storchaka. - Issue #16228: Fix a crash in the json module where a list changes size @@ -3560,7 +5734,7 @@ Library - Issue #16245: Fix the value of a few entities in html.entities.html5. -- Issue #16301: Fix the localhost verification in urllib/request.py for ``file://`` +- Issue #16301: Fix the localhost verification in urllib/request.py for file:// urls. - Issue #16250: Fix the invocations of URLError which had misplaced filename @@ -3591,7 +5765,7 @@ Library - Issue #16176: Properly identify Windows 8 via platform.platform() - Issue #16088: BaseHTTPRequestHandler's send_error method includes a - Content-Length header in its response now. Patch by Antoine Pitrou. + Content-Length header in it's response now. Patch by Antoine Pitrou. - Issue #16114: The subprocess module no longer provides a misleading error message stating that args[0] did not exist when either the cwd or executable @@ -4111,10 +6285,6 @@ C-API PyImport_ExecCodeModuleWithPathnames() (and thus by extension PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()). -- Issue #15767: Added PyErr_SetImportErrorSubclass(). - -- PyErr_SetImportError() now sets TypeError when its msg argument is set. - - Issue #9369: The types of `char*` arguments of PyObject_CallFunction() and PyObject_CallMethod() now changed to `const char*`. Based on patches by Jörg Müller and Lars Buitinck. @@ -4142,10 +6312,6 @@ C-API Documentation ------------- -- Issue #23006: Improve the documentation and indexing of dict.__missing__. - Add an entry in the language datamodel special methods section. - Revise and index its discussion in the stdtypes mapping/dict section. - - Issue #17701: Improving strftime documentation. - Issue #18440: Clarify that `hash()` can truncate the value returned from an diff --git a/Misc/NEWS b/Misc/NEWS index 9f62022..ed39fce 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -3329,6 +3329,1456 @@ C API 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 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? ================================= @@ -3748,6 +5198,9 @@ IDLE 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 @@ -4077,6 +5530,12 @@ Library - 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. @@ -4087,9 +5546,6 @@ Library - Issue #15014: SMTP.auth() and SMTP.login() now support RFC 4954's optional initial-response argument to the SMTP AUTH command. -- Issue #6549: Remove hyphen from ttk.Style().element options. Only return result - from ttk.Style().configure if a result was generated or a query submitted. - - Issue #24669: Fix inspect.getsource() for 'async def' functions. Patch by Kai Groner. @@ -4101,6 +5557,7 @@ 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? ================================== @@ -4261,9 +5718,6 @@ Core and Builtins - Issue #24268: PEP 489: Multi-phase extension module initialization. Patch by Petr Viktorin. -- Issue #23359: Optimize set object internals by specializing the - hash table search into a lookup function and an insert function. - - Issue #23955: Add pyvenv.cfg option to suppress registry/environment lookup for generating sys.path on Windows. @@ -4384,8 +5838,8 @@ Library - 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 #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.) @@ -4806,8 +6260,8 @@ Library writer failed in BufferedRWPair.close(). - Issue #23622: Unknown escapes in regular expressions that consist of ``'\'`` - and an ASCII letter now raise a deprecation warning and will be forbidden - in Python 3.6. + 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 -- cgit v0.12