diff options
Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 2719 |
1 files changed, 2033 insertions, 686 deletions
@@ -2,10 +2,10 @@ Python News +++++++++++ -What's New in Python 3.3.4 release candidate 1? -=============================================== +What's New in Python 3.4.0 Beta 2? +================================== -*Not yet released, see sections below for changes released in 3.3.3* +Release date: 2014-01-05 Core and Builtins ----------------- @@ -15,6 +15,9 @@ Core and Builtins - Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes. +- Issue #19736: Add module-level statvfs constants defined for GNU/glibc + based systems. + - Issue #19729: In str.format(), fix recursive expansion in format spec. - Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2 @@ -23,10 +26,10 @@ Core and Builtins Library ------- -- Issue #17200: telnetlib's read_until and expect timeout was broken by the - fix to Issue #14635 in Python 3.3.0 to be interpreted as milliseconds - instead of seconds when the platform supports select.poll (ie: everywhere). - It is now treated as seconds once again. +- Issue #15475: Add __sizeof__ implementations for itertools objects. + +- Issue #19880: Fix a reference leak in unittest.TestCase. Explicitly break + reference cycles between frames and the _Outcome instance. - Issue #17429: platform.linux_distribution() now decodes files from the UTF-8 encoding with the surrogateescape error handler, instead of decoding from the @@ -34,6 +37,9 @@ Library probably the first major distribution release with a non-ASCII name. Patch written by Toshio Kuratomi. +- Issue #19343: Expose FreeBSD-specific APIs in resource module. Original + patch by Koobs. + - Issue #19929: Call os.read with 32768 within subprocess.Popen.communicate rather than 4096 for efficiency. A microbenchmark shows Linux and OS X both using ~50% less cpu time this way. @@ -41,21 +47,69 @@ Library - Issue #19506: Use a memoryview to avoid a data copy when piping data to stdin within subprocess.Popen.communicate. 5-10% less cpu usage. +- Issue #19876: selectors unregister() no longer raises ValueError or OSError + if the FD is closed (as long as it was registered). + +- Issue #19908: pathlib now joins relative Windows paths correctly when a drive + is present. Original patch by Antoine Pitrou. + +- Issue #19296: Silence compiler warning in dbm_open + +- Issue #6784: Strings from Python 2 can now be unpickled as bytes + objects by setting the encoding argument of Unpickler to be 'bytes'. + Initial patch by Merlijn van Deen. + - Issue #19839: Fix regression in bz2 module's handling of non-bzip2 data at EOF, and analogous bug in lzma module. +- Issue #19881: Fix pickling bug where cpickle would emit bad pickle data for + large bytes string (i.e., with size greater than 2**32-1). + - Issue #19138: doctest's IGNORE_EXCEPTION_DETAIL now allows a match when no exception detail exists (no colon following the exception's name, or a colon does follow but no text follows the colon). +- Issue #19827: On UNIX, setblocking() and settimeout() methods of + socket.socket can now avoid a second syscall if the ioctl() function can be + used, or if the non-blocking flag of the socket is unchanged. + +- Issue #19785: smtplib now supports SSLContext.check_hostname and server name + indication for TLS/SSL connections. + +- Issue #19784: poplib now supports SSLContext.check_hostname and server name + indication for TLS/SSL connections. + +- Issue #19783: nntplib now supports SSLContext.check_hostname and server name + indication for TLS/SSL connections. + +- Issue #19782: imaplib now supports SSLContext.check_hostname and server name + indication for TLS/SSL connections. + - Issue #19834: Support unpickling of exceptions pickled by Python 2. +- Issue #19781: ftplib now supports SSLContext.check_hostname and server name + indication for TLS/SSL connections. + +- Issue #19509: Add SSLContext.check_hostname to match the peer's certificate + with server_hostname on handshake. + - Issue #15798: Fixed subprocess.Popen() to no longer fail if file descriptor 0, 1 or 2 is closed. +- Issue #17897: Optimized unpickle prefetching. + +- Issue #3693: Make the error message more helpful when the array.array() + constructor is given a str. Move the array module typecode documentation to + the docstring of the constructor. + - Issue #19088: Fixed incorrect caching of the copyreg module in object.__reduce__() and object.__reduce_ex__(). +- Issue #19698: Removed exec_module() methods from + importlib.machinery.BuiltinImporter and ExtensionFileLoader. + +- Issue #18864: Added a setter for ModuleSpec.has_location. + - Fixed _pickle.Unpickler to not fail when loading empty strings as persistent IDs. @@ -65,6 +119,12 @@ Library - Issue #6477: Added support for pickling the types of built-in singletons (i.e., Ellipsis, NotImplemented, None). +- Issue #19851: Fixed a regression in reloading sub-modules. + +- ssl.create_default_context() sets OP_NO_COMPRESSION to prevent CRIME. + +- Issue #19802: Add socket.SO_PRIORITY. + - Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with virtual interface. Original patch by Kent Frazier. @@ -73,47 +133,6 @@ Library - Issue #19545: Avoid chained exceptions while passing stray % to time.strptime(). Initial patch by Claudiu Popa. -- Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on - big-endian platforms. - -- Issue #19449: in csv's writerow, handle non-string keys when generating the - error message that certain keys are not in the 'fieldnames' list. - -- Fix test.support.bind_port() to not cause an error when Python was compiled - on a system with SO_REUSEPORT defined in the headers but run on a system - with an OS kernel that does not support that reasonably new socket option. - -- Fix compilation error under gcc of the ctypes module bundled libffi for arm. - -- Issue #19523: Closed FileHandler leak which occurred when delay was set. - -- Issue #13674: Prevented time.strftime from crashing on Windows when given - a year before 1900 and a format of %y. - -- Issue #19544 and Issue #6286: Restore use of urllib over http allowing use - of http_proxy for Distutils upload command, a feature accidentally lost - in the rollback of distutils2. - -- Issue #19544 and Issue #7457: Restore the read_pkg_file method to - distutils.dist.DistributionMetadata accidentally removed in the undo of - distutils2. - -- Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms. - -- Issue #19480: HTMLParser now accepts all valid start-tag names as defined - by the HTML5 standard. - -- Issue #6157: Fixed tkinter.Text.debug(). Original patch by Guilherme Polo. - -- Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of - integers instead of a string. Based on patch by Guilherme Polo. - -- Issue #10197: Rework subprocess.get[status]output to use subprocess - functionality and thus to work on Windows. Patch by Nick Coghlan. - -- Issue #19286: Directories in ``package_data`` are no longer added to - the filelist, preventing failure outlined in the ticket. - IDLE ---- @@ -127,26 +146,28 @@ Tests - Issue #19928: Implemented a test for repr() of cell objects. -- Issue #19535: Fixed test_docxmlrpc when python is run with -OO. +- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and + test_statistics when python is run with -OO. - Issue #19926: Removed unneeded test_main from test_abstract_numbers. Patch by Vajrasky Kok. +- Issue #19572: More skipped tests explicitly marked as skipped. + - Issue #19595: Re-enabled a long-disabled test in test_winsound. - Issue #19588: Fixed tests in test_random that were silently skipped most of the time. Patch by Julian Gindi. -- Issue #19596: Set untestable tests in test_importlib to None to avoid - reporting success on empty tests. - -- Issue #19440: Clean up test_capi by removing an unnecessary __future__ - import, converting from test_main to unittest.main, and running the - _testcapi module tests within a unittest TestCase. +Build +----- -- Issue #18702, 19572: All skipped tests now reported as skipped. +- Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t + for mbrtowc(). -- Issue #19085: Added basic tests for all tkinter widget options. +- Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the + pythoncore sub-project. This should prevent build errors due a previous + build's python(_d).exe still running. Documentation ------------- @@ -158,136 +179,286 @@ Documentation - Issue #19795: Improved markup of True/False constants. -- Issue #18326: Clarify that list.sort's arguments are keyword-only. Also, - attempt to reduce confusion in the glossary by not saying there are - different "types" of arguments and parameters. -Build ------ +What's New in Python 3.4.0 Beta 1? +================================== -- Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the - pythoncore sub-project. This should prevent build errors due a previous - build's python(_d).exe still running. +Release date: 2013-11-24 -- Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH - for nmake.exe correctly. +Core and Builtins +----------------- +- Use the repr of a module name in more places in import, especially + exceptions. -What's New in Python 3.3.3? -=========================== +- Issue #19619: str.encode, bytes.decode and bytearray.decode now use an + internal API to throw LookupError for known non-text encodings, rather + than attempting the encoding or decoding operation and then throwing a + TypeError for an unexpected output type. (The latter mechanism remains + in place for third party non-text encodings) -*Release date: 17-Nov-2013* +- Issue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'. + Python now uses SipHash24 on all major platforms. -No changes from release candidate 2. +- Issue #12892: The utf-16* and utf-32* encoders no longer allow surrogate code + points (U+D800-U+DFFF) to be encoded. The utf-32* decoders no longer decode + byte sequences that correspond to surrogate code points. The surrogatepass + error handler now works with the utf-16* and utf-32* codecs. Based on + patches by Victor Stinner and Kang-Hao (Kenny) Lu. +- Issue #17806: Added keyword-argument support for "tabsize" to + str/bytes.expandtabs(). -What's New in Python 3.3.3 release candidate 2? -=============================================== +- Issue #17828: Output type errors in str.encode(), bytes.decode() and + bytearray.decode() now direct users to codecs.encode() or codecs.decode() + as appropriate. + +- Issue #17828: The interpreter now attempts to chain errors that occur in + codec processing with a replacement exception of the same type that + includes the codec name in the error message. It ensures it only does this + 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 objects destructors. So "unclosed file" resource + warnings are now corretly emitted for daemon threads. -*Release date: 11-Nov-2013* +- Issue #19514: Deduplicate some _Py_IDENTIFIER declarations. + Patch by Andrei Dorian Duma. + +- Issue #17936: Fix O(n**2) behaviour when adding or removing many subclasses + of a given type. + +- Issue #19428: zipimport now handles errors when reading truncated or invalid + ZIP archive. + +- Issue #18408: Add a new PyFrame_FastToLocalsWithError() function to handle + exceptions when merging fast locals into f_locals of a frame. + PyEval_GetLocals() now raises an exception and return NULL on failure. + +- Issue #19369: Optimized the usage of __length_hint__(). + +- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the + Python executable and not removed by the linker's optimizer. + +- Issue #19306: Add extra hints to the faulthandler module's stack + dumps that these are "upside down". Library ------- -- Issue #19227: Any re-seeding of the OpenSSL RNG on fork has been removed; - this should be handled by OpenSSL itself or by the application. +- Issue #3158: doctest can now find doctests in functions and methods + written in C. -- Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler. +- Issue #13477: Added command line interface to the tarfile module. + Original patch by Berker Peksag. -Tests ------ +- Issue #19674: inspect.signature() now produces a correct signature + for some builtins. -- Issue #18964: Fix test_tcl when run with Tcl/Tk versions < 8.5. +- Issue #19722: Added opcode.stack_effect(), which + computes the stack effect of bytecode instructions. -Build ------ +- Issue #19735: Implement private function ssl._create_stdlib_context() to + create SSLContext objects in Python's stdlib module. It provides a single + configuration point and makes use of SSLContext.load_default_certs(). -- Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.3.3. - Some third-party projects, such as Matplotlib and PIL/Pillow, - depended on being able to build with Tcl and Tk frameworks in - /Library/Frameworks. +- Issue #16203: Add re.fullmatch() function and regex.fullmatch() method, + which anchor the pattern at both ends of the string to match. + Original patch by Matthew Barnett. +- Issue #13592: Improved the repr for regular expression pattern objects. + Based on patch by Hugo Lopes Tavares. -What's New in Python 3.3.3 release candidate 1? -=============================================== +- Issue #19641: Added the audioop.byteswap() function to convert big-endian + samples to little-endian and vice versa. -*Release date: 27-Oct-2013* +- Issue #15204: Deprecated the 'U' mode in file-like objects. -Core and Builtins ------------------ +- Issue #17810: Implement PEP 3154, pickle protocol 4. -- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the - Python executable and not removed by the linker's optimizer. +- Issue #19668: Added support for the cp1125 encoding. -- Issue #19279: UTF-7 decoder no more produces illegal strings. +- Issue #19689: Add ssl.create_default_context() factory function. It creates + a new SSLContext object with secure default settings. -- Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at - least one place so as to avoid regressions. +- Issue #19727: os.utime(..., None) is now potentially more precise + under Windows. -- Issue #19014: memoryview.cast() is now allowed on zero-length views. +- Issue #17201: ZIP64 extensions now are enabled by default. Patch by + William Mallard. -- Issue #19098: Prevent overflow in the compiler when the recursion limit is set - absurdly high. +- Issue #19292: Add SSLContext.load_default_certs() to load default root CA + certificates from default stores or system stores. By default the method + loads CA certs for authentication of server certs. -- Issue #18942: sys._debugmallocstats() output was damaged on Windows. +- Issue #19673: Add pathlib to the stdlib as a provisional module (PEP 428). -- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions. +- Issue #16596: pdb in a generator now properly skips over yield and + yield from rather than stepping out of the generator into its + caller. (This is essential for stepping through asyncio coroutines.) -- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc() - fails. +- Issue #17916: Added dis.Bytecode.from_traceback() and + dis.Bytecode.current_offset to easily display "current instruction" + markers in the new disassembly API (Patch by Claudiu Popa). -- Issue #16741: Fix an error reporting in int(). +- Issue #19552: venv now supports bootstrapping pip into virtual environments -- Issue #17899: Fix rare file descriptor leak in os.listdir(). +- Issue #17134: Finalize interface to Windows' certificate store. Cert and + CRL enumeration are now two functions. enum_certificates() also returns + purpose flags as set of OIDs. -- Issue #18552: Check return value of PyArena_AddPyObject() in - obj2ast_object(). +- Issue #19555: Restore sysconfig.get_config_var('SO'), (and the distutils + equivalent) with a DeprecationWarning pointing people at $EXT_SUFFIX. -- Issue #18560: Fix potential NULL pointer dereference in sum(). +- Issue #8813: Add SSLContext.verify_flags to change the verification flags + of the context in order to enable certification revocation list (CRL) + checks or strict X509 rules. -- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0], - prefix and exec_prefix if the operation system does not obey MAXPATHLEN. +- Issue #18294: Fix the zlib module to make it 64-bit safe. -- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all(). +- Issue #19682: Fix compatibility issue with old version of OpenSSL that + was introduced by Issue #18379. -- Issue #17872: Fix a segfault in marshal.load() when input stream returns - more bytes than requested. +- Issue #14455: plistlib now supports binary plists and has an updated API. -- Issue #18426: Fix NULL pointer dereference in C extension import when - PyModule_GetDef() returns an error. +- Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on + big-endian platforms. -- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the - tstate is first removed from TLS and then deallocated. +- Issue #18379: SSLSocket.getpeercert() returns CA issuer AIA fields, OCSP + and CRL distribution points. -- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise - OverflowError when an argument of %c format is out of range. +- Issue #18138: Implement cadata argument of SSLContext.load_verify_location() + to load CA certificates and CRL from memory. It supports PEM and DER + encoded strings. -- Issue #18137: Detect integer overflow on precision in float.__format__() - and complex.__format__(). +- Issue #18775: Add name and block_size attribute to HMAC object. They now + provide the same API elements as non-keyed cryptographic hash functions. -- Issue #18183: Fix various unicode operations on strings with large unicode - codepoints. +- Issue #17276: MD5 as default digestmod for HMAC is deprecated. The HMAC + module supports digestmod names, e.g. hmac.HMAC('sha1'). -- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows(). +- Issue #19449: in csv's writerow, handle non-string keys when generating the + error message that certain keys are not in the 'fieldnames' list. -- Issue #18038: SyntaxError raised during compilation sources with illegal - encoding now always contains an encoding name. +- Issue #13633: Added a new convert_charrefs keyword arg to HTMLParser that, + when True, automatically converts all character references. -- Issue #17644: Fix a crash in str.format when curly braces are used in square - brackets. +- Issue #2927: Added the unescape() function to the html module. -- Issue #17983: Raise a SyntaxError for a ``global __class__`` statement in a - class body. +- Issue #8402: Added the escape() function to the glob module. -- Issue #17927: Frame objects kept arguments alive if they had been copied into - a cell, even if the cell was cleared. +- Issue #17618: Add Base85 and Ascii85 encoding/decoding to the base64 module. -Library -------- +- Issue #19634: time.strftime("%y") now raises a ValueError on AIX when given a + year before 1900. + +- Fix test.support.bind_port() to not cause an error when Python was compiled + on a system with SO_REUSEPORT defined in the headers but run on a system + with an OS kernel that does not support that reasonably new socket option. + +- Fix compilation error under gcc of the ctypes module bundled libffi for arm. + +- 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 manager protocol. (Inital + patch by Claudiu Popa) + +- Issue #8311: Added support for writing any bytes-like objects in the aifc, + sunau, and wave modules. + +- Issue #5202: Added support for unseekable files in the wave module. + +- Issue #19544 and Issue #1180: Restore global option to ignore + ~/.pydistutils.cfg in Distutils, accidentally removed in backout of + distutils2 changes. + +- Issue #19523: Closed FileHandler leak which occurred when delay was set. + +- Issue #19544 and #6516: Restore support for --user and --group parameters to + sdist command accidentally rolled back as part of the distutils2 rollback. + +- Issue #13674: Prevented time.strftime from crashing on Windows when given + a year before 1900 and a format of %y. + +- Issue #19406: implementation of the ensurepip module (part of PEP 453). + Patch by Donald Stufft and Nick Coghlan. + +- Issue #19544 and Issue #6286: Restore use of urllib over http allowing use + of http_proxy for Distutils upload command, a feature accidentally lost + in the rollback of distutils2. + +- Issue #19544 and Issue #7457: Restore the read_pkg_file method to + distutils.dist.DistributionMetadata accidentally removed in the undo of + distutils2. + +- Issue #16685: Added support for any bytes-like objects in the audioop module. + Removed support for strings. + +- Issue #7171: Add Windows implementation of ``inet_ntop`` and ``inet_pton`` + to socket module. Patch by Atsuo Ishimoto. + +- Issue #19261: Added support for writing 24-bit samples in the sunau module. + +- Issue #1097797: Added CP273 encoding, used on IBM mainframes in + Germany and Austria. Mapping provided by Michael Bierenfeld. + +- Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms. + +- Issue #19378: Fixed a number of cases in the dis module where the new + "file" parameter was not being honoured correctly + +- Issue #19378: Removed the "dis.Bytecode.show_info" method + +- Issue #19378: Renamed the "dis.Bytecode.display_code" method to + "dis.Bytecode.dis" and converted it to returning a string rather than + printing output. + +- Issue #19378: the "line_offset" parameter in the new "dis.get_instructions" + API has been renamed to "first_line" (and the default value and usage + changed accordingly). This should reduce confusion with the more common use + of "offset" in the dis docs to refer to bytecode offsets. + +- Issue #18678: Corrected spwd struct member names in spwd module: + sp_nam->sp_namp, and sp_pwd->sp_pwdp. The old names are kept as extra + structseq members, for backward compatibility. + +- Issue #6157: Fixed tkinter.Text.debug(). tkinter.Text.bbox() now raises + TypeError instead of TclError on wrong number of arguments. Original patch + by Guilherme Polo. + +- Issue #10197: Rework subprocess.get[status]output to use subprocess + functionality and thus to work on Windows. Patch by Nick Coghlan + +- Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of + integers instead of a string. Based on patch by Guilherme Polo. + +- Issue #19403: contextlib.redirect_stdout is now reentrant + +- Issue #19286: Directories in ``package_data`` are no longer added to + the filelist, preventing failure outlined in the ticket. + +- Issue #19480: HTMLParser now accepts all valid start-tag names as defined + by the HTML5 standard. + +- Issue #15114: The html.parser module now raises a DeprecationWarning when the + strict argument of HTMLParser or the HTMLParser.error method are used. -- Issue #19395: Raise an exception when attempting to pickle a bz2 or lzma - compressor/decompressor object, rather than creating a pickle that would - cause a segfault when loaded and used. +- Issue #19410: Undo the special-casing removal of '' for + importlib.machinery.FileFinder. + +- Issue #19424: Fix the warnings module to accept filename containing surrogate + characters. + +- Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler. + +- Issue #19227: Remove pthread_atfork() handler. The handler was added to + solve #18747 but has caused issues. + +- Issue #19420: Fix reference leak in module initalization code of + _hashopenssl.c + +- Issue #19329: Optimized compiling charsets in regular expressions. - Issue #19227: Try to fix deadlocks caused by re-seeding then OpenSSL pseudo-random number generator on fork(). @@ -310,12 +481,30 @@ Library - Issue #16039: CVE-2013-1752: Change use of readline in imaplib module to limit line length. Patch by Emil Lind. +- Issue #19330: the unnecessary wrapper functions have been removed from the + implementations of the new contextlib.redirect_stdout and + contextlib.suppress context managers, which also ensures they provide + reasonable help() output on instances + - Issue #19393: Fix symtable.symtable function to not be confused when there are functions or classes named "top". +- Issue #18685: Restore re performance to pre-PEP 393 levels. + - Issue #19339: telnetlib module is now using time.monotonic() when available to compute timeout. +- Issue #19399: fix sporadic test_subprocess failure. + +- Issue #13234: Fix os.listdir to work with extended paths on Windows. + Patch by Santoso Wijaya. + +- Issue #19375: The site module adding a "site-python" directory to sys.path, + if it exists, is now deprecated. + +- Issue #19379: Lazily import linecache in the warnings module, to make + startup with warnings faster until a warning gets printed. + - Issue #19288: Fixed the "in" operator of dbm.gnu databases for string argument. Original patch by Arfrever Frehtes Taifersar Arahesis. @@ -324,812 +513,936 @@ Library - Issue #19327: Fixed the working of regular expressions with too big charset. +- Issue #17400: New 'is_global' attribute for ipaddress to tell if an address + is allocated by IANA for global or private networks. + - Issue #19350: Increasing the test coverage of macurl2path. Patch by Colin Williams. +- Issue #19365: Optimized the parsing of long replacement string in re.sub*() + functions. + - Issue #19352: Fix unittest discovery when a module can be reached through several paths (e.g. under Debian/Ubuntu with virtualenv). - Issue #15207: Fix mimetypes to read from correct part of Windows registry Original patch by Dave Chambers +- Issue #16595: Add prlimit() to resource module. + +- Issue #19324: Expose Linux-specific constants in resource module. + +- Issue #17400: ipaddress should make it easy to identify rfc6598 addresses. + +- Load SSL's error strings in hashlib. + +- Issue #18527: Upgrade internal copy of zlib to 1.2.8. + +- Issue #19274: Add a filterfunc parameter to PyZipFile.writepy. + - Issue #8964: fix platform._sys_version to handle IronPython 2.6+. Patch by Martin Matusiak. +- Issue #19413: Restore pre-3.3 reload() semantics of re-finding modules. + +- Issue #18958: Improve error message for json.load(s) while passing a string + that starts with a UTF-8 BOM. + +- Issue #19307: Improve error message for json.load(s) while passing objects + of the wrong type. + - Issue #16038: CVE-2013-1752: ftplib: Limit amount of data read by limiting the call to readline(). Original patch by Michał Jastrzębski and Giampaolo Rodola. -- Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX. - Patch by David Edelsohn. +- Issue #17087: Improved the repr for regular expression match objects. -- Issue #19276: Fixed the wave module on 64-bit big-endian platforms. +Tests +----- -- Issue #18776: atexit callbacks now display their full traceback when they - raise an exception. +- Issue #19664: test_userdict's repr test no longer depends on the order + of dict elements. -- Issue #17827: Add the missing documentation for ``codecs.encode`` and - ``codecs.decode``. +- Issue #19440: Clean up test_capi by removing an unnecessary __future__ + import, converting from test_main to unittest.main, and running the + _testcapi module tests as subTests of a unittest TestCase method. -- Issue #18458: Prevent crashes with newer versions of libedit. Its readline - emulation has changed from 0-based indexing to 1-based like gnu readline. - Original patch by Ronald Oussoren. +- Issue #19378: the main dis module tests are now run with both stdout + redirection *and* passing an explicit file parameter -- Issue #18919: If the close() method of a writer in the sunau or wave module - failed, second invocation of close() and destructor no more raise an - exception. +- Issue #19378: removed the not-actually-helpful assertInstructionMatches + and assertBytecodeExactlyMatches helpers from bytecode_helper -- Issue #19131: The aifc module now correctly reads and writes sampwidth of - compressed streams. +- Issue #18702: All skipped tests now reported as skipped. -- Issue #19158: a rare race in BoundedSemaphore could allow .release() too - often. +- Issue #19439: interpreter embedding tests are now executed on Windows + (Patch by Zachary Ware) -- Issue #18037: 2to3 now escapes '\u' and '\U' in native strings. +- Issue #19085: Added basic tests for all tkinter widget options. -- Issue #19137: The pprint module now correctly formats instances of set and - frozenset subclasses. +- Issue 19384: Fix test_py_compile for root user, patch by Claudiu Popa. -- Issue #19092: contextlib.ExitStack now correctly reraises exceptions - from the __exit__ callbacks of inner context managers (Patch by Hrvoje - Nikšić) +Documentation +------------- -- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except - when necessary. Patch by Oscar Benjamin. +- Issue #18326: Clarify that list.sort's arguments are keyword-only. Also, + attempt to reduce confusion in the glossary by not saying there are + different "types" of arguments and parameters. -- Issue #18594: The fast path for collections.Counter() was never taken - due to an over-restrictive type check. And the fallback path did - not implement the same algorithm as the pure python code. +Build +----- -- Properly initialize all fields of a SSL object after allocation. +- Issue #19358: "make clinic" now runs the Argument Clinic preprocessor + over all CPython source files. -- Issue #4366: Fix building extensions on all platforms when --enable-shared - is used. +- Update SQLite to 3.8.1, xz to 5.0.5, and Tcl/Tk to 8.6.1 on Windows. -- Issue #18950: Fix miscellaneous bugs in the sunau module. - Au_read.readframes() now updates current file position and reads correct - number of frames from multichannel stream. Au_write.writeframesraw() now - correctly updates current file position. Au_read.getnframes() now returns an - integer (as in Python 2). Au_read and Au_write now correctly works with file - object if start file position is not a zero. +- Issue #16632: Enable DEP and ASLR on Windows. -- Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty - bytes until end of data. +- Issue #17791: Drop PREFIX and EXEC_PREFIX definitions from PC/pyconfig.h -- Issue #19028: Fixed tkinter.Tkapp.merge() for non-string arguments. +- Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH + for nmake.exe correctly. -- Issue #3015: Fixed tkinter with wantobject=False. Any Tcl command call - returned empty string. +- Issue #19550: Implement Windows installer changes of PEP 453 (ensurepip). -- Issue #18050: Fixed an incompatibility of the re module with Python 3.3.0 - binaries. +- Issue #19520: Fix compiler warning in the _sha3 module on 32bit Windows. -- Issue #19037: The mailbox module now makes all changes to maildir files - before moving them into place, to avoid race conditions with other programs - that may be accessing the maildir directory. +- Issue #19356: Avoid using a C variabled named "_self", it's a reserved + word in some C compilers. -- Issue #14984: On POSIX systems, when netrc is called without a filename - argument (and therefore is reading the user's $HOME/.netrc file), it now - enforces the same security rules as typical ftp clients: the .netrc file must - be owned by the user that owns the process and must not be readable by any - other user. +- Issue #15792: Correct build options on Win64. Patch by Jeremy Kloth. -- Issue #18873: The tokenize module now detects Python source code encoding - only in comment lines. +- Issue #19373: Apply upstream change to Tk 8.5.15 fixing OS X 10.9 + screen refresh problem for OS X installer build. -- Issue #17324: Fix http.server's request handling case on trailing '/'. Patch - contributed by Vajrasky Kok. +- Issue #19649: On OS X, the same set of file names are now installed + in bin directories for all configurations: non-framework vs framework, + and single arch vs universal builds. pythonx.y-32 is now always + installed for 64-bit/32-bit universal builds. The obsolete and + undocumented pythonw* symlinks are no longer installed anywhere. -- Issue #19018: The heapq.merge() function no longer suppresses IndexError - in the underlying iterables. +- Issue #19553: PEP 453 - "make install" and "make altinstall" now install or + upgrade pip by default, using the bundled pip provided by the new ensurepip + module. A new configure option, --with-ensurepip[=upgrade|install|no], is + available to override the default ensurepip "--upgrade" option. The option + can also be set with "make [alt]install ENSUREPIP=[upgrade|install\no]". -- Issue #18784: The uuid module no more attempts to load libc via ctypes.CDLL, - if all necessary functions are already found in libuuid. - Patch by Evgeny Sologubov. +- Issue #19551: PEP 453 - the OS X installer now installs pip by default. -- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in - the _sre module. +- Update third-party libraries for OS X installers: + xz 5.0.3 -> 5.0.5 + SQLite 3.7.13 -> 3.8.1 -- Issue #18830: inspect.getclasstree() no more produces duplicated entries even - when input list contains duplicates. +- Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.4.0b1. + Some third-party projects, such as Matplotlib and PIL/Pillow, + depended on being able to build with Tcl and Tk frameworks in + /Library/Frameworks. -- Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast - 64-bit pointer to long (32 bits). +Tools/Demos +----------- -- Issue #18876: The FileIO.mode attribute now better reflects the actual mode - under which the file was opened. Patch by Erik Bray. +- Issue #19730: Argument Clinic now supports all the existing PyArg + "format units" as legacy converters, as well as two new features: + "self converters" and the "version" directive. -- Issue #18418: After fork(), reinit all threads states, not only active ones. - Patch by A. Jesse Jiryu Davis. +- Issue #19552: pyvenv now bootstraps pip into virtual environments by + default (pass --without-pip to request the old behaviour) -- Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly' - cookie flags. +- Issue #19390: Argument Clinic no longer accepts malformed Python + and C ids. -- Issue #11973: Fix a problem in kevent. The flags and fflags fields are now - properly handled as unsigned. +What's New in Python 3.4.0 Alpha 4? +=================================== -- Issue #17702: On error, os.environb now removes suppress the except context - when raising a new KeyError with the original key. +Release date: 2013-10-20 -- Issue #18755: Fixed the loader used in imp to allow get_data() to be called - multiple times. +Core and Builtins +----------------- -- Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6. +- Issue #19301: Give classes and functions that are explicitly marked global a + global qualname. -- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj - argument. +- Issue #19279: UTF-7 decoder no longer produces illegal strings. -- Issue #18324: set_payload now correctly handles binary input. This also - supersedes the previous fixes for #14360, #1717, and #16564. +- Issue #16612: Add "Argument Clinic", a compile-time preprocessor for + C files to generate argument parsing code. (See PEP 436.) -- Issue #17119: Fixed integer overflows when processing large strings and tuples - in the tkinter module. +- Issue #18810: Shift stat calls in importlib.machinery.FileFinder such that + the code is optimistic that if something exists in a directory named exactly + like the possible package being searched for that it's in actuality a + directory. -- 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. +- Issue #18416: importlib.machinery.PathFinder now treats '' as the cwd and + importlib.machinery.FileFinder no longer special-cases '' to '.'. This leads + to modules imported from cwd to now possess an absolute file path for + __file__ (this does not affect modules specified by path on the CLI but it + does affect -m/runpy). It also allows FileFinder to be more consistent by not + having an edge case. -- Issue #8865: Concurrent invocation of select.poll.poll() now raises a - RuntimeError exception. Patch by Christian Schubert. +- Issue #4555: All exported C symbols are now prefixed with either + "Py" or "_Py". -- Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit - platforms. Patch by Yogesh Chaudhari. +- Issue #19219: Speed up marshal.loads(), and make pyc files slightly + (5% to 10%) smaller. -- Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of - OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function. +- Issue #19221: Upgrade Unicode database to version 6.3.0. -- Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok. +- Issue #16742: The result of the C callback PyOS_ReadlineFunctionPointer must + now be a string allocated by PyMem_RawMalloc() or PyMem_RawRealloc() (or NULL + if an error occurred), instead of a string allocated by PyMem_Malloc() or + PyMem_Realloc(). -- Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke - malloc weak symbols. +- Issue #19199: Remove ``PyThreadState.tick_counter`` field -- 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 represention of ASN.1 - strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and - ``uniformResourceIdentifier`` (URI). +- Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at + least one place so as to avoid regressions. -- Issue #18756: Improve error reporting in os.urandom() when the failure - is due to something else than /dev/urandom not existing (for example, - exhausting the file descriptor limit). +- Issue #19087: Improve bytearray allocation in order to allow cheap popping + of data at the front (slice deletion). -- Issue #18405: Improve the entropy of crypt.mksalt(). +- Issue #19014: memoryview.cast() is now allowed on zero-length views. -- Issue #19151: Fix docstring and use of _get_supported_file_loaders() to - reflect 2-tuples. +- Issue #18690: memoryview is now automatically registered with + collections.abc.Sequence -- Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get - docstrings and ValueError messages. Patch by Zhongyue Luo +- Issue #19078: memoryview now correctly supports the reversed builtin + (Patch by Claudiu Popa) -- Issue #18681: Fix a NameError in imp.reload() (noticed by Weizhao Li). +Library +------- -- Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error - if methods have annotations; it now correctly displays the annotations. +- Issue #17457: unittest test discovery now works with namespace packages. + Patch by Claudiu Popa. -- Issue #17998: Fix an internal error in regular expression engine. +- Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX. + Patch by David Edelsohn. -- Issue #17557: Fix os.getgroups() to work with the modified behavior of - getgroups(2) on OS X 10.8. Original patch by Mateusz Lenik. +- Issue #18606: Add the new "statistics" module (PEP 450). Contributed + by Steven D'Aprano. -- Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns - 'SHA1' instead of 'SHA'. +- Issue #12866: The audioop module now supports 24-bit samples. -- Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL. +- Issue #19254: Provide an optimized Python implementation of pbkdf2_hmac. -- Issue #18559: Fix NULL pointer dereference error in _pickle module +- Issues #19201, #19222, #19223: Add "x" mode (exclusive creation) in opening + file to bz2, gzip and lzma modules. Patches by Tim Heaney and Vajrasky Kok. -- Issue #18556: Check the return value of a PyUnicode_AsWideChar() call in - ctypes' U_set(). +- Fix a reference count leak in _sre. -- Issue #18549: Eliminate dead code in socket_ntohl() +- Issue #19262: Initial check in of the 'asyncio' package (a.k.a. Tulip, + a.k.a. PEP 3156). There are no docs yet, and the PEP is slightly + out of date with the code. This module will have *provisional* status + in Python 3.4. -- Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj() +- Issue #19276: Fixed the wave module on 64-bit big-endian platforms. -- Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 + - gcc. +- Issue #19266: Rename the new-in-3.4 ``contextlib.ignore`` context manager + to ``contextlib.suppress`` in order to be more consistent with existing + descriptions of that operation elsewhere in the language and standard + library documentation (Patch by Zero Piraeus). -- Issue #18480: Add missing call to PyType_Ready to the _elementtree extension. +- Issue #18891: Completed the new email package (provisional) API additions + by adding new classes EmailMessage, MIMEPart, and ContentManager. -- Issue #17778: Fix test discovery for test_multiprocessing. (Patch by - Zachary Ware.) +- Issue #18281: Unused stat constants removed from `tarfile`. -- Issue #18431: The new email header parser now decodes RFC2047 encoded words - in structured headers. +- Issue #18468: The re.split, re.findall, and re.sub functions and the group() + and groups() methods of match object now always return a string or a bytes + object. -- Issue #18432: The sched module's queue method was incorrectly returning - an iterator instead of a list. +- Issue #18725: The textwrap module now supports truncating multiline text. -- Issue #18044: The new email header parser was mis-parsing encoded words where - an encoded character immediately followed the '?' that follows the CTE - character, resulting in a decoding failure. They are now decoded correctly. +- Issue #18776: atexit callbacks now display their full traceback when they + raise an exception. -- Issue #18101: Tcl.split() now process strings nested in a tuple as it - do with byte strings. +- Issue #17827: Add the missing documentation for ``codecs.encode`` and + ``codecs.decode``. -- Issue #17198: Fix a NameError in the dbm module. Patch by Valentina - Mukhamedzhanova. +- Issue #19218: Rename collections.abc to _collections_abc in order to + speed up interpreter start. -- Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form. +- Issue #18582: Add 'pbkdf2_hmac' to the hashlib module. It implements PKCS#5 + password-based key derivation functions with HMAC as pseudorandom function. -- Issue #18347: ElementTree's html serializer now preserves the case of - closing tags. +- Issue #19131: The aifc module now correctly reads and writes sampwidth of + compressed streams. -- Issue #17261: Ensure multiprocessing's proxies use proper address. +- Issue #19209: Remove import of copyreg from the os module to speed up + interpreter startup. stat_result and statvfs_result are now hard-coded to + reside in the os module. -- Issue #18343: faulthandler.register() now keeps the previous signal handler - when the function is called twice, so faulthandler.unregister() restores - correctly the original signal handler. +- Issue #19205: Don't import the 're' module in site and sysconfig module to + to speed up interpreter start. -- Issue #17097: Make multiprocessing ignore EINTR. +- Issue #9548: Add a minimal "_bootlocale" module that is imported by the + _io module instead of the full locale module. -- Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a - segfault inside the _pickle C extension. +- Issue #18764: remove the 'print' alias for the PDB 'p' command so that it no + longer shadows the print function. -- Issue #18224: Removed pydoc script from created venv, as it causes problems - on Windows and adds no value over and above python -m pydoc ... +- Issue #19158: a rare race in BoundedSemaphore could allow .release() too + often. -- Issue #18155: The csv module now correctly handles csv files that use - a delimter character that has a special meaning in regexes, instead of - throwing an exception. +- Issue #15805: Add contextlib.redirect_stdout(). -- Issue #14360: encode_quopri can now be successfully used as an encoder - when constructing a MIMEApplication object. +- Issue #18716: Deprecate the formatter module. -- Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input - string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain() - raises a ValueError if the password is longer than 2 gigabytes. The ssl - module does not support partial write. +- Issue #10712: 2to3 has a new "asserts" fixer that replaces deprecated names + of unittest methods (e.g. failUnlessEqual -> assertEqual). -- Issue #18248: Fix libffi build on AIX. +- Issue #18037: 2to3 now escapes '\u' and '\U' in native strings. -- Issue #18259: Declare sethostname in socketmodule.c for AIX +- Issue #17839: base64.decodebytes and base64.encodebytes now accept any + object that exports a 1 dimensional array of bytes (this means the same + is now also true for base64_codec) -- Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data - when \r\n appears at end of 65535 bytes without other newlines. +- Issue #19132: The pprint module now supports compact mode. -- subprocess: Prevent a possible double close of parent pipe fds when the - subprocess exec runs into an error. Prevent a regular multi-close of the - /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL. +- Issue #19137: The pprint module now correctly formats instances of set and + frozenset subclasses. -- Issue #16102: Make uuid._netbios_getnode() work again on Python 3. +- Issue #10042: functools.total_ordering now correctly handles + NotImplemented being returned by the underlying comparison function (Patch + by Katie Miller) -- Issue #18109: os.uname() now decodes fields from the locale encoding, and - socket.gethostname() now decodes the hostname from the locale encoding, - instead of using the UTF-8 encoding in strict mode. +- Issue #19092: contextlib.ExitStack now correctly reraises exceptions + from the __exit__ callbacks of inner context managers (Patch by Hrvoje + Nikšić) -- Issue #17403: urllib.parse.robotparser normalizes the urls before adding to - ruleline. This helps in handling certain types invalid urls in a conservative - manner. +- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except + when necessary. Patch by Oscar Benjamin. -- Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw - stream's read() returns more bytes than requested. +- Issue #5845: In site.py, only load readline history from ~/.python_history + if no history has been read already. This avoids double writes to the + history file at shutdown. -- Issue #18011: base64.b32decode() now raises a binascii.Error if there are - non-alphabet characters present in the input string to conform a docstring. - Updated the module documentation. +- Properly initialize all fields of a SSL object after allocation. -- Issue #13772: Restored directory detection of targets in ``os.symlink`` on - Windows, which was temporarily removed in Python 3.2.3 due to an incomplete - implementation. The implementation now works even if the symlink is created - in a location other than the current directory. +- Issue #19095: SSLSocket.getpeercert() now raises ValueError when the + SSL handshake hasn't been done. -- Issue #16986: ElementTree now correctly parses a string input not only when - an internal XML encoding is UTF-8 or US-ASCII. +- Issue #4366: Fix building extensions on all platforms when --enable-shared + is used. -- Issue #17812: Fixed quadratic complexity of base64.b32encode(). +- Issue #19030: Fixed `inspect.getmembers` and `inspect.classify_class_attrs` + to attempt activating descriptors before falling back to a __dict__ search + for faulty descriptors. `inspect.classify_class_attrs` no longer returns + Attributes whose home class is None. -- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of - service using certificates with many wildcards (CVE-2013-2099). +C API +----- -- Issue #17981: Closed socket on error in SysLogHandler. +- Issue #1772673: The type of `char*` arguments now changed to `const char*`. -- Fix typos in the multiprocessing module. +- Issue #16129: Added a `Py_SetStandardStreamEncoding` pre-initialization API + to allow embedding applications like Blender to force a particular + encoding and error handler for the standard IO streams (initial patch by + Bastien Montagne) -- Issue #17754: Make ctypes.util.find_library() independent of the locale. +Tests +----- -- Issue #17968: Fix memory leak in os.listxattr(). +- Issue #19275: Fix test_site on AMD64 Snow Leopard -- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X - with port None or "0" and flags AI_NUMERICSERV. +- Issue #14407: Fix unittest test discovery in test_concurrent_futures. -- Issue #18698: Ensure imp.reload() returns the module out of sys.modules. +- Issue #18919: Unified and extended tests for audio modules: aifc, sunau and + wave. -- Issue #18080: When building a C extension module on OS X, if the compiler - 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 #18714: Added tests for ``pdb.find_function()``. -- Issue #18113: Fixed a refcount leak in the curses.panel module's - set_userptr() method. Reported by Atsuo Ishimoto. +Documentation +------------- -- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an - existing directory caused mkstemp and related APIs to fail instead of - retrying. Report and fix by Vlad Shcherbina. +- Issue #18758: Fixed and improved cross-references. -- Issue #19400: Prevent extension module build failures with Xcode 5 on OS X - 10.8+ when using a universal Python that included a PPC architecture, - such as with a python.org 32-bit-only binary installer. +- Issue #18972: Modernize email examples and use the argparse module in them. -C API +Build ----- -- Issue #18351: Fix various issues with a helper function in importlib used - by PyImport_ExecCodeModuleWithPathnames() (and thus by extension - PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()). +- Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010. -IDLE ----- +- Issue #15663: Update OS X 10.6+ installer to use Tcl/Tk 8.5.15. -- Issue #18873: IDLE now detects Python source code encoding only in comment - lines. +- Issue #14499: Fix several problems with OS X universal build support: + 1. ppc arch detection for extension module builds broke with Xcode 5 + 2. ppc arch detection in configure did not work on OS X 10.4 + 3. -sysroot and -arch flags were unnecessarily duplicated + 4. there was no obvious way to configure an intel-32 only build. -- Issue #18988: The "Tab" key now works when a word is already autocompleted. +- Issue #19019: Change the OS X installer build script to use CFLAGS instead + of OPT for special build options. By setting OPT, some compiler-specific + options like -fwrapv were overridden and thus not used, which could result + in broken interpreters when building with clang. -- Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster. +What's New in Python 3.4.0 Alpha 3? +=================================== -- Issue #18429: Format / Format Paragraph, now works when comment blocks - are selected. As with text blocks, this works best when the selection - only includes complete lines. +Release date: 2013-09-29 -- Issue #18226: Add docstrings and unittests for FormatParagraph.py. - Original patches by Todd Rovito and Phil Webster. +Core and Builtins +----------------- -- Issue #18279: Format - Strip trailing whitespace no longer marks a file as - changed when it has not been changed. This fix followed the addition of a - test file originally written by Phil Webster (the issue's main goal). +- Issue #18818: The "encodingname" part of PYTHONIOENCODING is now optional. -- Issue #7136: In the Idle File menu, "New Window" is renamed "New File". - Patch by Tal Einat, Roget Serwy, and Todd Rovito. +- Issue #19098: Prevent overflow in the compiler when the recursion limit is set + absurdly high. -- Remove dead imports of imp. +Library +------- -- Issue #18196: Avoid displaying spurious SystemExit tracebacks. +- Issue #18929: `inspect.classify_class_attrs()` now correctly finds class + attributes returned by `dir()` that are located in the metaclass. -- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition. +- Issue #18950: Fix miscellaneous bugs in the sunau module. + Au_read.readframes() now updates current file position and reads correct + number of frames from multichannel stream. Au_write.writeframesraw() now + correctly updates current file position. Au_read.getnframes() now returns an + integer (as in Python 2). Au_read and Au_write now correctly works with file + object if start file position is not a zero. -- Issue #17511: Keep IDLE find dialog open after clicking "Find Next". - Original patch by Sarah K. +- Issue #18594: The fast path for collections.Counter() was never taken + due to an over-restrictive type check. -- Issue #18055: Move IDLE off of imp and on to importlib. +- Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty + bytes until end of data. -- Issue #15392: Create a unittest framework for IDLE. - Initial patch by Rajagopalasarma Jayakrishnan. - See Lib/idlelib/idle_test/README.txt for how to run Idle tests. +- logging: added support for Unix domain sockets to SocketHandler and + DatagramHandler. -- Issue #14146: Highlight source line while debugging on Windows. +- Issue #18996: TestCase.assertEqual() now more cleverly shorten differing + strings in error report. -- Issue #17532: Always include Options menu for IDLE on OS X. - Patch by Guilherme Simões. +- Issue #19034: repr() for tkinter.Tcl_Obj now exposes string reperesentation. -Tests ------ +- Issue #18978: ``urllib.request.Request`` now allows the method to be + indicated on the class and no longer sets it to None in ``__init__``. -- Issue #14407: Fix unittest test discovery in test_concurrent_futures. +- Issue #18626: the inspect module now offers a basic command line + introspection interface (Initial patch by Claudiu Popa) -- Issue #18919: Unified and extended tests for audio modules: aifc, sunau and - wave. +- Issue #3015: Fixed tkinter with wantobject=False. Any Tcl command call + returned empty string. + +- Issue #19037: The mailbox module now makes all changes to maildir files + before moving them into place, to avoid race conditions with other programs + that may be accessing the maildir directory. + +- Issue #14984: On POSIX systems, when netrc is called without a filename + argument (and therefore is reading the user's $HOME/.netrc file), it now + enforces the same security rules as typical ftp clients: the .netrc file must + be owned by the user that owns the process and must not be readable by any + other user. + +- Issue #18873: The tokenize module now detects Python source code encoding + only in comment lines. + +- Issue #17764: Enable http.server to bind to a user specified network + interface. Patch contributed by Malte Swart. + +- Issue #18937: Add an assertLogs() context manager to unittest.TestCase + to ensure that a block of code emits a message using the logging module. + +- Issue #17324: Fix http.server's request handling case on trailing '/'. Patch + contributed by Vajrasky Kok. + +- Issue #19018: The heapq.merge() function no longer suppresses IndexError + in the underlying iterables. + +- Issue #18784: The uuid module no more attempts to load libc via ctypes.CDLL, + if all necessary functions are already found in libuuid. + Patch by Evgeny Sologubov. + +- The :envvar:`PYTHONFAULTHANDLER` environment variable now only enables the + faulthandler module if the variable is non-empty. Same behaviour than other + variables like :envvar:`PYTHONDONTWRITEBYTECODE`. + +- Issue #1565525: New function ``traceback.clear_frames`` will clear + the local variables of all the stack frames referenced by a traceback + object. + +Tests +----- - Issue #18952: Fix regression in support data downloads introduced when test.support was converted to a package. Regression noticed by Zachary Ware. -- Issue #12037: Fix test_email for desktop Windows. +IDLE +---- -- Issue #15507: test_subprocess's test_send_signal could fail if the test - runner were run in an environment where the process inherited an ignore - setting for SIGINT. Restore the SIGINT handler to the desired - KeyboardInterrupt raising one during that test. +- Issue #18873: IDLE now detects Python source code encoding only in comment + lines. -- Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as - possible, since "localhost" goes through a DNS lookup under recent Windows - versions. +- Issue #18988: The "Tab" key now works when a word is already autocompleted. -- Issue #1666318: Add a test that shutil.copytree() retains directory - permissions. Patch by Catherine Devlin. +Documentation +------------- -- Issue #18357: add tests for dictview set difference. - Patch by Fraser Tweedale. +- Issue #17003: Unified the size argument names in the io module with common + practice. -- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json - and make them discoverable by unittest. Patch by Zachary Ware. +Build +----- -- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger). +- Issue #18596: Support the use of address sanity checking in recent versions + of clang and GCC by appropriately marking known false alarms in the small + object allocator. Patch contributed by Dhiru Kholia. -- Issue #18396: Fix spurious test failure in test_signal on Windows when - faulthandler is enabled (Patch by Jeremy Kloth) +Tools/Demos +----------- -- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess. +- Issue #18873: 2to3 and the findnocoding.py script now detect Python source + code encoding only in comment lines. -- Issue #15415: Add new temp_dir() and change_cwd() context managers to - test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek. -- Issue #15494: test.support is now a package rather than a module (Initial - patch by Indra Talip) +What's New in Python 3.4.0 Alpha 2? +=================================== -- Issue #17944: test_zipfile now discoverable and uses subclassing to - generate tests for different compression types. Fixed a bug with skipping - some tests due to use of exhausted iterators. +Release date: 2013-09-09 -- Issue #18266: test_largefile now works with unittest test discovery and - supports running only selected tests. Patch by Zachary Ware. +Core and Builtins +----------------- -- Issue #17767: test_locale now works with unittest test discovery. - Original patch by Zachary Ware. +- Issue #18942: sys._debugmallocstats() output was damaged on Windows. -- Issue #18375: Assume --randomize when --randseed is used for running the - testsuite. +- Issue #18780: %-formatting now prints value instead of str for + int subclasses when using %d, %i, and %u codes. -- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé. +- Issue #18571: Implementation of the PEP 446: file descriptors and file + handles are now created non-inheritable; add functions + os.get/set_inheritable(), os.get/set_handle_inheritable() and + socket.socket.get/set_inheritable(). -- Issue #17691: test_univnewlines now works with unittest test discovery. - Patch by Zachary Ware. +- Issue #11619: The parser and the import machinery do not encode Unicode + filenames anymore on Windows. -- Issue #18094: test_uuid no more reports skipped tests as passed. +- Issue #18808: Non-daemon threads are now automatically joined when + a sub-interpreter is shutdown (it would previously dump a fatal error). -- Issue #11995: test_pydoc doesn't import all sys.path modules anymore. +- Remove supporting for compiling on systems without getcwd(). -Documentation -------------- +- Issue #18774: Remove last bits of GNU PTH thread code and thread_pth.h. -- Issue #19392: Document that `imp.reload()` now also requires `__loader__` to - be set on the module being reloaded. +- Issue #18771: Add optimization to set object lookups to reduce the cost + of hash collisions. The core idea is to inspect a second key/hash pair + for each cache line retrieved. -- Issue #18758: Fixed and improved cross-references. +- Issue #16105: When a signal handler fails to write to the file descriptor + registered with ``signal.set_wakeup_fd()``, report an exception instead + of ignoring the error. -- Issue #18743: Fix references to non-existant "StringIO" module. +- Issue #18722: Remove uses of the "register" keyword in C code. -- Issue #18783: Removed existing mentions of Python long type in docstrings, - error messages and comments. +- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions. -- Issue #17701: Improving strftime documentation. +- Issue #16499: Add command line option for isolated mode. -- Issue #18440: Clarify that `hash()` can truncate the value returned from an - object's custom `__hash__()` method. +- Issue #15301: Parsing fd, uid, and gid parameters for builtins + in Modules/posixmodule.c is now far more robust. -- Issue #17953: Mention that you shouldn't replace sys.modules and deleting key - items will cause Python to not be happy. +- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc() + fail. -- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs. +- Issue #17934: Add a clear() method to frame objects, to help clean up + expensive details (local variables) and break reference cycles. -- Issue #14097: improve the "introduction" page of the tutorial. +- Issue #18780: %-formatting codes %d, %i, and %u now treat int-subclasses + as int (displays value of int-subclass instead of str(int-subclass) ). -- Issue #17977: The documentation for the cadefault argument's default value - in urllib.request.urlopen() is fixed to match the code. +Library +------- -Tools/Demos ------------ +- Issue #18808: Thread.join() now waits for the underlying thread state to + be destroyed before returning. This prevents unpredictable aborts in + Py_EndInterpreter() when some non-daemon threads are still running. -- Issue #18873: 2to3 and the findnocoding.py script now detect Python source - code encoding only in comment lines. +- Issue #18458: Prevent crashes with newer versions of libedit. Its readline + emulation has changed from 0-based indexing to 1-based like gnu readline. -- Issue #18817: Fix a resource warning in Lib/aifc.py demo. +- Issue #18852: Handle case of ``readline.__doc__`` being ``None`` in the new + readline activation code in ``site.py``. -- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS. +- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in + the _sre module. -- Issue #18448: Fix a typo in Tools/demo/eiffel.py. +- Issue #18830: inspect.getclasstree() no more produces duplicated entries even + when input list contains duplicates. -- Issue #18457: Fixed saving of formulas and complex numbers in - Tools/demo/ss1.py. +- Issue #18878: sunau.open now supports the context manager protocol. Based on + patches by Claudiu Popa and R. David Murray. -- Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by - Févry Thibault. +- Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast + 64-bit pointer to long (32 bits). -- Issue #15239: Make mkstringprep.py work again on Python 3. +- Issue #18876: The FileIO.mode attribute now better reflects the actual mode + under which the file was opened. Patch by Erik Bray. -- Issue #12990: The "Python Launcher" on OSX could not launch python scripts - that have paths that include wide characters. +- Issue #16853: Add new selectors module. -Build ------ +- Issue #18882: Add threading.main_thread() function. -- Issue #19356: Avoid using a C variabled named "_self", it's a reserved - word in some C compilers. +- Issue #18901: The sunau getparams method now returns a namedtuple rather than + a plain tuple. Patch by Claudiu Popa. -- Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010. +- Issue #17487: The result of the wave getparams method now is pickleable again. + Patch by Claudiu Popa. -- Issue #16067: Add description into MSI file to replace installer's temporary name. +- Issue #18756: os.urandom() now uses a lazily-opened persistent file + descriptor, so as to avoid using many file descriptors when run in + parallel from multiple threads. -- Issue #18256: Compilation fix for recent AIX releases. Patch by - David Edelsohn. +- Issue #18418: After fork(), reinit all threads states, not only active ones. + Patch by A. Jesse Jiryu Davis. -- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1 - on Windows. +- Issue #17974: Switch unittest from using getopt to using argparse. -- Issue #1584: Provide options to override default search paths for - Tcl and Tk when building _tkinter. +- Issue #11798: TestSuite now drops references to own tests after execution. -- Issue #15663: Tcl/Tk 8.5.15 is now included with the OS X 10.6+ - 64-bit/32-bit installer for 10.6+. It is no longer necessary - to install a third-party version of Tcl/Tk 8.5 to work around the - problems in the Apple-supplied Tcl/Tk 8.5 shipped in OS X 10.6 - and later releases. +- Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly' + cookie flags. -- Issue #19019: Change the OS X installer build script to use CFLAGS instead - of OPT for special build options. By setting OPT, some compiler-specific - options like -fwrapv were overridden and thus not used, which could result - in broken interpreters when building with clang. +- Issue #11973: Fix a problem in kevent. The flags and fflags fields are now + properly handled as unsigned. +- Issue #18807: ``pyvenv`` now takes a --copies argument allowing copies + instead of symlinks even where symlinks are available and the default. -What's New in Python 3.3.2? -=========================== +- Issue #18538: ``python -m dis`` now uses argparse for argument processing. + Patch by Michele Orrù. -*Release date: 13-May-2013* +- Issue #18394: Close cgi.FieldStorage's optional file. -Core and Builtins ------------------ +- Issue #17702: On error, os.environb now removes suppress the except context + when raising a new KeyError with the original key. -- Issue #17237: Fix crash in the ASCII decoder on m68k. +- Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6. -- Issue #17408: Avoid using an obsolete instance of the copyreg module when - the interpreter is shutdown and then started again. +- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj + argument. -- Issue #17863: In the interactive console, don't loop forever if the encoding - can't be fetched from stdin. +- Issue #18324: set_payload now correctly handles binary input. This also + supersedes the previous fixes for #14360, #1717, and #16564. -- Issue #17867: Raise an ImportError if __import__ is not found in __builtins__. +- Issue #18794: Add a fileno() method and a closed attribute to select.devpoll + objects. -- Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3, - such as was shipped with Centos 5 and Mac OS X 10.4. +- Issue #17119: Fixed integer overflows when processing large strings and tuples + in the tkinter module. -- Issue #17413: sys.settrace callbacks were being passed a string instead of an - exception instance for the 'value' element of the arg tuple if the exception - originated from C code; now an exception instance is always provided. +- 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. -- Issue #17782: Fix undefined behaviour on platforms where - ``struct timespec``'s "tv_nsec" member is not a C long. +- Issue #8865: Concurrent invocation of select.poll.poll() now raises a + RuntimeError exception. Patch by Christian Schubert. -- Issue #17715: Fix segmentation fault from raising an exception in a __trunc__ - method. +- Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of + OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function. -- Issue #16447: Fixed potential segmentation fault when setting __name__ on a - class. +- Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok. -- Issue #17669: Fix crash involving finalization of generators using yield from. +- Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke + malloc weak symbols. -- Issue #17619: Make input() check for Ctrl-C correctly on Windows. +- 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 represention of ASN.1 + strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and + ``uniformResourceIdentifier`` (URI). -- Issue #17610: Don't rely on non-standard behavior of the C qsort() function. +- Issue #18701: Remove support of old CPython versions (<3.0) from C code. -- Issue #17357: Add missing verbosity output when using -v/-vv. +- Issue #18756: Improve error reporting in os.urandom() when the failure + is due to something else than /dev/urandom not existing (for example, + exhausting the file descriptor limit). -Library -------- +- Issue #18673: Add O_TMPFILE to os module. O_TMPFILE requires Linux kernel + 3.11 or newer. It's only defined on system with 3.11 uapi headers, too. -- Issue #17606: Fixed support of encoded byte strings in the XMLGenerator - characters() and ignorableWhitespace() methods. Original patch by Sebastian - Ortiz Vasquez. +- Issue #18532: Change the builtin hash algorithms' names to lower case names + as promised by hashlib's documentation. -- Issue #17732: Ignore distutils.cfg options pertaining to install paths if a - virtual environment is active. +- Issue #18405: Improve the entropy of crypt.mksalt(). -- Issue #1159051: Back out a fix for handling corrupted gzip files that - broke backwards compatibility. +- Issue #12015: The tempfile module now uses a suffix of 8 random characters + instead of 6, to reduce the risk of filename collision. The entropy was + reduced when uppercase letters were removed from the charset used to generate + random characters. -- Issue #17915: Fix interoperability of xml.sax with file objects returned by - codecs.open(). +- Issue #18585: Add :func:`textwrap.shorten` to collapse and truncate a + piece of text to a given length. -- Issue #16601: Restarting iteration over tarfile no more continues from where - it left off. Patch by Michael Birtwell. +- Issue #18598: Tweak exception message for importlib.import_module() to + include the module name when a key argument is missing. -- Issue #17289: The readline module now plays nicer with external modules - or applications changing the rl_completer_word_break_characters global - variable. Initial patch by Bradley Froehle. +- Issue #19151: Fix docstring and use of _get_supported_file_loaders() to + reflect 2-tuples. -- Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit - platforms. Patch by Federico Schwindt. +- Issue #19152: Add ExtensionFileLoader.get_filename(). -- Issue #14173: Avoid crashing when reading a signal handler during - interpreter shutdown. +- Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get + docstrings and ValueError messages. Patch by Zhongyue Luo -- Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions. +- Fix refcounting issue with extension types in tkinter. -- Issue #15902: Fix imp.load_module() accepting None as a file when loading an - extension module. +- Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error + if methods have annotations; it now correctly displays the annotations. -- Issue #17802: Fix an UnboundLocalError in html.parser. Initial tests by - Thomas Barlow. +- Issue #18600: Added policy argument to email.message.Message.as_string, + and as_bytes and __bytes__ methods to Message. -- Issue #15535: Fix namedtuple pickles which were picking up the OrderedDict - instead of just the underlying tuple. +- Issue #18671: Output more information when logging exceptions occur. -- Issue #17192: Restore the patch for Issue #11729 which was ommitted in - 3.3.1 when updating the bundled version of libffi used by ctypes. Update - many libffi files that were missed in 3.3.1's update to libffi-3.0.13. +- Issue #18621: Prevent the site module's patched builtins from keeping + too many references alive for too long. -- Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by - extention load_module()) now have a better chance of working when reloaded. +- Issue #4885: Add weakref support to mmap objects. Patch by Valerie Lambert. -- Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures +- Issue #8860: Fixed rounding in timedelta constructor. -- Issue #11714: Use 'with' statements to assure a Semaphore releases a - condition variable. Original patch by Thomas Rachel. +- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an + existing directory caused mkstemp and related APIs to fail instead of + retrying. Report and fix by Vlad Shcherbina. -- Issue #17795: Reverted backwards-incompatible change in SysLogHandler with - Unix domain sockets. +- Issue #18920: argparse's default destination for the version action (-v, + --version) has also been changed to stdout, to match the Python executable. -- Issue #17555: Fix ForkAwareThreadLock so that size of after fork - registry does not grow exponentially with generation of process. +Tests +----- -- Issue #17707: multiprocessing.Queue's get() method does not block for short - timeouts. +- Issue #18623: Factor out the _SuppressCoreFiles context manager into + test.support. Patch by Valerie Lambert. -- Isuse #17720: Fix the Python implementation of pickle.Unpickler to correctly - process the APPENDS opcode when it is used on non-list objects. +- Issue #12037: Fix test_email for desktop Windows. -- Issue #17012: shutil.which() no longer fallbacks to the PATH environment - variable if empty path argument is specified. Patch by Serhiy Storchaka. +- Issue #15507: test_subprocess's test_send_signal could fail if the test + runner were run in an environment where the process inherited an ignore + setting for SIGINT. Restore the SIGINT handler to the desired + KeyboardInterrupt raising one during that test. -- Issue #17710: Fix pickle raising a SystemError on bogus input. +- Issue #16799: Switched from getopt to argparse style in regrtest's argument + parsing. Added more tests for regrtest's argument parsing. -- Issue #17341: Include the invalid name in the error messages from re about - invalid group names. +- Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as + possible, since "localhost" goes through a DNS lookup under recent Windows + versions. -- Issue #17702: os.environ now raises KeyError with the original environment - variable name (str on UNIX), instead of using the encoded name (bytes on - UNIX). +IDLE +---- -- Issue #16163: Make the importlib based version of pkgutil.iter_importers - work for submodules. Initial patch by Berker Peksag. +- Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster. -- Issue #16804: Fix a bug in the 'site' module that caused running - 'python -S -m site' to incorrectly throw an exception. +Documentation +------------- -- Issue #17016: Get rid of possible pointer wraparounds and integer overflows - in the re module. Patch by Nickolai Zeldovich. +- Issue #18743: Fix references to non-existant "StringIO" module. -- Issue #16658: add missing return to HTTPConnection.send() - Patch by Jeff Knupp. +- Issue #18783: Removed existing mentions of Python long type in docstrings, + error messages and comments. -- Issue #14971: unittest test discovery no longer gets confused when a function - has a different __name__ than its name in the TestCase class dictionary. +Build +----- -- Issue #17678: Fix DeprecationWarning in the http/cookiejar.py by changing the - usage of get_origin_req_host() to origin_req_host. +- Issue #1584: Provide configure options to override default search paths for + Tcl and Tk when building _tkinter. -- Issue #17666: Fix reading gzip files with an extra field. +- Issue #15663: Tcl/Tk 8.5.14 is now included with the OS X 10.6+ 64-/32-bit + installer. It is no longer necessary to install a third-party version of + Tcl/Tk 8.5 to work around the problems in the Apple-supplied Tcl/Tk 8.5 + shipped in OS X 10.6 and later releases. -- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator. - Patch by Michael Foord. +Tools/Demos +----------- -- Issue #17572: Avoid chained exceptions while passing bad directives to - time.strptime(). Initial patch by Claudiu Popa. +- Issue #18922: Now The Lib/smtpd.py and Tools/i18n/msgfmt.py scripts write + their version strings to stdout, and not to sderr. -- Issue #17435: threading.Timer's __init__ method no longer uses mutable - default values for the args and kwargs parameters. +What's New in Python 3.4.0 Alpha 1? +=================================== -- Issue #17526: fix an IndexError raised while passing code without filename to - inspect.findsource(). Initial patch by Tyler Doyle. +Release date: 2013-08-03 -- Issue #16550: Update the opcode descriptions of pickletools to use unsigned - integers where appropriate. Initial patch by Serhiy Storchaka. +Core and Builtins +----------------- -IDLE ----- +- Issue #16741: Fix an error reporting in int(). -- Issue #17838: Allow sys.stdin to be reassigned. +- Issue #17899: Fix rare file descriptor leak in os.listdir(). -- Issue #13495: Avoid loading the color delegator twice in IDLE. +- Issue #10241: Clear extension module dict copies at interpreter shutdown. + Patch by Neil Schemenauer, minimally modified. -- Issue #17798: Allow IDLE to edit new files when specified on command line. +- Issue #9035: ismount now recognises volumes mounted below a drive root + on Windows. Original patch by Atsuo Ishimoto. -- Issue #14735: Update IDLE docs to omit "Control-z on Windows". +- Issue #18214: Improve finalization of Python modules to avoid setting + their globals to None, in most cases. -- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit(). +- Issue #18112: PEP 442 implementation (safe object finalization). -- Issue #17657: Show full Tk version in IDLE's about dialog. - Patch by Todd Rovito. +- Issue #18552: Check return value of PyArena_AddPyObject() in + obj2ast_object(). -- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE. +- Issue #18560: Fix potential NULL pointer dereference in sum(). -- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE. +- Issue #18520: Add a new PyStructSequence_InitType2() function, same than + PyStructSequence_InitType() except that it has a return value (0 on success, + -1 on error). -- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box. +- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0], + prefix and exec_prefix if the operation system does not obey MAXPATHLEN. -- Issue #17625: In IDLE, close the replace dialog after it is used. +- Issue #18408: Fix many various bugs in code handling errors, especially + on memory allocation failure (MemoryError). -- Issue #14254: IDLE now handles readline correctly across shell restarts. +- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all(). -- Issue #17614: IDLE no longer raises exception when quickly closing a file. +- Issue #18342: Use the repr of a module name when an import fails when using + ``from ... import ...``. -- Issue #6698: IDLE now opens just an editor window when configured to do so. +- Issue #17872: Fix a segfault in marshal.load() when input stream returns + more bytes than requested. -- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer - raises an exception. +- Issue #18338: `python --version` now prints version string to stdout, and + not to stderr. Patch by Berker Peksag and Michael Dickens. -- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo. +- Issue #18426: Fix NULL pointer dereference in C extension import when + PyModule_GetDef() returns an error. -Tests ------ +- Issue #17206: On Windows, increase the stack size from 2 MB to 4.2 MB to fix + a stack overflow in the marshal module (fix a crash in test_marshal). + Patch written by Jeremy Kloth. -- Issue #17833: Fix test_gdb failures seen on machines where debug symbols - for glibc are available (seen on PPC64 Linux). +- Issue #3329: Implement the PEP 445: Add new APIs to customize Python memory + allocators. -- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython. - Initial patch by Dino Viehland. +- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the + tstate is first removed from TLS and then deallocated. -- Issue #17712: Fix test_gdb failures on Ubuntu 13.04. +- Issue #13483: Use VirtualAlloc in obmalloc on Windows. -- Issue #17835: Fix test_io when the default OS pipe buffer size is larger - than one million bytes. +- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise + OverflowError when an argument of %c format is out of range. -- Issue #17065: Use process-unique key for winreg tests to avoid failures if - test is run multiple times in parallel (eg: on a buildbot host). +- Issue #18111: The min() and max() functions now support a default argument + to be returned instead of raising a ValueError on an empty sequence. + (Contributed by Julian Berman.) -- Issue #12820: add tests for the xml.dom.minicompat module. - Patch by John Chandler and Phil Connell. +- Issue #18137: Detect integer overflow on precision in float.__format__() + and complex.__format__(). -- Issue #17790: test_set now works with unittest test discovery. - Patch by Zachary Ware. +- Issue #18183: Fix various unicode operations on strings with large unicode + codepoints. -- Issue #17789: test_random now works with unittest test discovery. - Patch by Zachary Ware. +- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows(). -- Issue #17779: test_osx_env now works with unittest test discovery. - Patch by Zachary Ware. +- Issue #18038: SyntaxError raised during compilation sources with illegal + encoding now always contains an encoding name. -- Issue #17766: test_iterlen now works with unittest test discovery. - Patch by Zachary Ware. +- Issue #17931: Resolve confusion on Windows between pids and process + handles. -- Issue #17690: test_time now works with unittest test discovery. - Patch by Zachary Ware. +- Tweak the exception message when the magic number or size value in a bytecode + file is truncated. -- Issue #17692: test_sqlite now works with unittest test discovery. - Patch by Zachary Ware. +- Issue #17932: Fix an integer overflow issue on Windows 64-bit in iterators: + change the C type of seqiterobject.it_index from long to Py_ssize_t. -- Issue #17843: Removed bz2 test data file that was triggering false-positive - virus warnings with certain antivirus software. +- Issue #18065: Don't set __path__ to the package name for frozen packages. -Documentation -------------- +- Issue #18088: When reloading a module, unconditionally reset all relevant + attributes on the module (e.g. __name__, __loader__, __package__, __file__, + __cached__). -- Issue #15940: Specify effect of locale on time functions. +- Issue #17937: Try harder to collect cyclic garbage at shutdown. -- Issue #6696: add documentation for the Profile objects, and improve - profile/cProfile docs. Patch by Tom Pinckney. +- Issue #12370: Prevent class bodies from interfering with the __class__ + closure. -- Issue #17915: Fix interoperability of xml.sax with file objects returned by - codecs.open(). +- Issue #17644: Fix a crash in str.format when curly braces are used in square + brackets. -Build ------ +- Issue #17237: Fix crash in the ASCII decoder on m68k. -- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC - 4.8. +- Issue #17927: Frame objects kept arguments alive if they had been + copied into a cell, even if the cell was cleared. -- Issue #17962: Build with OpenSSL 1.0.1e on Windows. +- Issue #1545463: At shutdown, defer finalization of codec modules so + that stderr remains usable. +- Issue #7330: Implement width and precision (ex: "%5.3s") for the format + string of PyUnicode_FromFormat() function, original patch written by Ysj Ray. -What's New in Python 3.3.1? -=========================== +- Issue #1545463: Global variables caught in reference cycles are now + garbage-collected at shutdown. -*Release date: 07-Apr-2013* +- Issue #17094: Clear stale thread states after fork(). Note that this + is a potentially disruptive change since it may release some system + resources which would otherwise remain perpetually alive (e.g. database + connections kept in thread-local storage). -Build ------ +- Issue #17408: Avoid using an obsolete instance of the copyreg module when + the interpreter is shutdown and then started again. -- Issue #17550: Fix the --enable-profiling configure switch. +- Issue #5845: Enable tab-completion in the interactive interpreter by + default, thanks to a new sys.__interactivehook__. -IDLE -------- +- Issue #17115,17116: Module initialization now includes setting __package__ and + __loader__ attributes to None. -- Issue #17625: In IDLE, close the replace dialog after it is used. +- Issue #17853: Ensure locals of a class that shadow free variables always win + over the closures. +- Issue #17863: In the interactive console, don't loop forever if the encoding + can't be fetched from stdin. -What's New in Python 3.3.1 release candidate 1? -=============================================== +- Issue #17867: Raise an ImportError if __import__ is not found in __builtins__. -*Release date: 24-Mar-2013* +- Issue #18698: Ensure importlib.reload() returns the module out of sys.modules. -Core and Builtins ------------------ +- Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3, + such as was shipped with Centos 5 and Mac OS X 10.4. -- Issue #17328: Fix possible refleak in dict.setdefault. +- Issue #17413: sys.settrace callbacks were being passed a string instead of an + exception instance for the 'value' element of the arg tuple if the exception + originated from C code; now an exception instance is always provided. + +- Issue #17782: Fix undefined behaviour on platforms where + ``struct timespec``'s "tv_nsec" member is not a C long. + +- Issue #17722: When looking up __round__, resolve descriptors. -- Issue #17223: Fix PyUnicode_FromUnicode() for string of 1 character outside - the range U+0000-U+10ffff. +- Issue #16061: Speed up str.replace() for replacing 1-character strings. -- Issue #1692335: Move initial args assignment to - BaseException.__new__ to help pickling of naive subclasses. +- Issue #17715: Fix segmentation fault from raising an exception in a __trunc__ + method. + +- Issue #17643: Add __callback__ attribute to weakref.ref. + +- Issue #16447: Fixed potential segmentation fault when setting __name__ on a + class. + +- Issue #17669: Fix crash involving finalization of generators using yield from. + +- Issue #14439: Python now prints the traceback on runpy failure at startup. + +- Issue #17469: Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks() + when running on valgrind. + +- Issue #17619: Make input() check for Ctrl-C correctly on Windows. + +- Issue #17357: Add missing verbosity messages for -v/-vv that were lost during + the importlib transition. + +- Issue #17610: Don't rely on non-standard behavior of the C qsort() function. + +- Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been + disabled by default. It can be re-enabled with the `-X showrefcount` option. + +- Issue #17328: Fix possible refleak in dict.setdefault. - Issue #17275: Corrected class name in init error messages of the C version of BufferedWriter and BufferedRandom. @@ -1137,12 +1450,17 @@ Core and Builtins - Issue #7963: Fixed misleading error message that issued when object is called without arguments. +- Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob. + - Issue #5308: Raise ValueError when marshalling too large object (a sequence with size >= 2**31), instead of producing illegal marshal data. - Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError and a full traceback including line number. +- Issue #16967: In function definition, evaluate positional defaults before + keyword-only defaults. + - Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.) in the interpreter. @@ -1157,6 +1475,10 @@ Core and Builtins - Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder. +- Issue #16772: The base argument to the int constructor no longer accepts + floats, or other non-integer objects with an __int__ method. Objects + with an __index__ method are now accepted. + - Issue #10156: In the interpreter's initialization phase, unicode globals are now initialized dynamically as needed. @@ -1184,12 +1506,6 @@ Core and Builtins - Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB. -- Issue #16455: On FreeBSD and Solaris, if the locale is C, the - ASCII/surrogateescape codec is now used, instead of the locale encoding, to - decode the command line arguments. This change fixes inconsistencies with - os.fsencode() and os.fsdecode() because these operating systems announces an - ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice. - - Issue #16761: Calling int() with base argument only now raises TypeError. - Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py @@ -1199,24 +1515,51 @@ Core and Builtins - Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx. +- Issue #11939: Set the st_dev attribute of stat_result to allow Windows to + take advantage of the os.path.samefile/sameopenfile/samestat implementations + used by other platforms. + +- Issue #16772: The int() constructor's second argument (base) no longer + accepts non integer values. Consistent with the behavior in Python 2. + +- Issue #14470: Remove w9xpopen support per PEP 11. + +- Issue #9856: Replace deprecation warning with raising TypeError + in object.__format__. Patch by Florent Xicluna. + - Issue #16597: In buffered and text IO, call close() on the underlying stream if invoking flush() fails. - Issue #16722: In the bytes() constructor, try to call __bytes__ on the argument before __index__. +- Issue #16421: loading multiple modules from one shared object is now + handled correctly (previously, the first module loaded from that file + was silently returned). Patch by Václav Šmilauer. + - Issue #16602: When a weakref's target was part of a long deallocation chain, the object could remain reachable through its weakref even though its refcount had dropped to zero. -- Issue #16416: On Mac OS X, operating system data are now always - encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding - (which may be ASCII if no locale environment variable is set), to avoid - inconsistencies with os.fsencode() and os.fsdecode() functions which are - already using UTF-8/surrogateescape. +- Issue #16495: Remove extraneous NULL encoding check from bytes_decode(). + +- Issue #16619: Create NameConstant AST class to represent None, True, and False + literals. As a result, these constants are never loaded at runtime from + builtins. + +- Issue #16455: On FreeBSD and Solaris, if the locale is C, the + ASCII/surrogateescape codec is now used, instead of the locale encoding, to + decode the command line arguments. This change fixes inconsistencies with + os.fsencode() and os.fsdecode() because these operating systems announces an + ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice. + +- Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka. - Issue #16588: Silence unused-but-set warnings in Python/thread_pthread +- Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation + failure. + - Issue #16546: Fix: ast.YieldFrom argument is now mandatory. - Issue #16514: Fix regression causing a traceback when sys.path[0] is None @@ -1228,11 +1571,23 @@ Core and Builtins - Issue #16215: Fix potential double memory free in str.replace(). Patch by Serhiy Storchaka. +- Issue #16290: A float return value from the __complex__ special method is no + longer accepted in the complex() constructor. + +- Issue #16416: On Mac OS X, operating system data are now always + encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding + (which may be ASCII if no locale environment variable is set), to avoid + inconsistencies with os.fsencode() and os.fsdecode() functions which are + already using UTF-8/surrogateescape. + - Issue #16453: Fix equality testing of dead weakref objects. - Issue #9535: Fix pending signals that have been received but not yet handled by Python to not persist after os.fork() in the child process. +- Issue #14794: Fix slice.indices to return correct results for huge values, + rather than raising OverflowError. + - Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor Stinner. @@ -1252,23 +1607,43 @@ Core and Builtins - Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now raises an error. +- Issue #7317: Display full tracebacks when an error occurs asynchronously. + Patch by Alon Horev with update by Alexey Kachayev. + +- Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH + not set at all. + +- Issue #10189: Improve the error reporting of SyntaxErrors related to global + and nonlocal statements. + - Fix segfaults on setting __qualname__ on builtin types and attempting to delete it on any type. +- Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch + written by Serhiy Storchaka. + - Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass received a nonempty dict from the constructor. - Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a class's __dict__ and on type. +- Issue #12805: Make bytes.join and bytearray.join faster when the separator + is empty. Patch by Serhiy Storchaka. + - Issue #6074: Ensure cached bytecode files can always be updated by the user that created them, even when the source file is read-only. +- Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer + objects. + - Issue #14783: Improve int() docstring and switch docstrings for str(), range(), and slice() to use multi-line signatures. - Issue #16160: Subclass support now works for types.SimpleNamespace. +- Upgrade Unicode data (UCD) to version 6.2. + - Issue #15379: Fix passing of non-BMP characters as integers for the charmap decoder (already working as unicode strings). Patch by Serhiy Storchaka. @@ -1281,24 +1656,479 @@ Core and Builtins - Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors. +- Issue #15448: Buffered IO now frees the buffer when closed, instead + of when deallocating. + - Issue #15846: Fix SystemError which happened when using `ast.parse()` in an exception handler on code with syntax errors. +- Issue #15897: zipimport.c doesn't check return value of fseek(). + Patch by Felipe Cruz. + - Issue #15801: Make sure mappings passed to '%' formatting are actually subscriptable. -- Issue #15111: __import__ should let ImportError propagate when a module that - is imported as a side-effect of using fromlist tries to import a module - that cannot be found. +- Issue #15111: __import__ should propagate ImportError when raised as a + side-effect of a module triggered from using fromlist. + +- Issue #15022: Add pickle and comparison support to types.SimpleNamespace. Library ------- +- Issue #4331: Added functools.partialmethod (Initial patch by Alon Horev) + +- Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit + platforms. Patch by Yogesh Chaudhari. + +- Issue #18681: Fix a NameError in importlib.reload() (noticed by Weizhao Li). + +- Issue #14323: Expanded the number of digits in the coefficients for the + RGB -- YIQ conversions so that they match the FCC NTSC versions. + +- Issue #17998: Fix an internal error in regular expression engine. + +- Issue #17557: Fix os.getgroups() to work with the modified behavior of + getgroups(2) on OS X 10.8. Original patch by Mateusz Lenik. + +- Issue #18608: Avoid keeping a strong reference to the locale module + inside the _io module. + +- Issue #18619: Fix atexit leaking callbacks registered from sub-interpreters, + and make it GC-aware. + +- Issue #15699: The readline module now uses PEP 3121-style module + initialization, so as to reclaim allocated resources (Python callbacks) + at shutdown. Original patch by Robin Schreiber. + +- Issue #17616: wave.open now supports the context manager protocol. + +- Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns + 'SHA1' instead of 'SHA'. + +- Issue #13266: Added inspect.unwrap to easily unravel __wrapped__ chains + (initial patch by Daniel Urban and Aaron Iles) + +- Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL. + +- Issue #18559: Fix NULL pointer dereference error in _pickle module + +- Issue #18556: Check the return type of PyUnicode_AsWideChar() in ctype's + U_set(). + +- Issue #17818: aifc.getparams now returns a namedtuple. + +- Issue #18549: Eliminate dead code in socket_ntohl() + +- Issue #18530: Remove additional stat call from posixpath.ismount. + Patch by Alex Gaynor. + +- Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj() + +- Issue #9177: Calling read() or write() now raises ValueError, not + AttributeError, on a closed SSL socket. Patch by Senko Rasic. + +- Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 + + gcc. + +- Issue #18479: Changed venv Activate.ps1 to make deactivate a function, and + removed Deactivate.ps1. + +- Issue #18480: Add missing call to PyType_Ready to the _elementtree extension. + +- Issue #17778: Fix test discovery for test_multiprocessing. (Patch by + Zachary Ware.) + +- Issue #18393: The private module _gestalt and private functions + platform._mac_ver_gestalt, platform._mac_ver_lookup and + platform._bcd2str have been removed. This does not affect the public + interface of the platform module. + +- Issue #17482: functools.update_wrapper (and functools.wraps) now set the + __wrapped__ attribute correctly even if the underlying function has a + __wrapped__ attribute set. + +- Issue #18431: The new email header parser now decodes RFC2047 encoded words + in structured headers. + +- Issue #18432: The sched module's queue method was incorrectly returning + an iterator instead of a list. + +- Issue #18044: The new email header parser was mis-parsing encoded words where + an encoded character immediately followed the '?' that follows the CTE + character, resulting in a decoding failure. They are now decoded correctly. + +- Issue #18101: Tcl.split() now process strings nested in a tuple as it + do with byte strings. + +- Issue #18116: getpass was always getting an error when testing /dev/tty, + and thus was always falling back to stdin. It also leaked an open file + when it did so. Both of these issues are now fixed. + +- Issue #17198: Fix a NameError in the dbm module. Patch by Valentina + Mukhamedzhanova. + +- Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form. + +- Issue #18020: improve html.escape speed by an order of magnitude. + Patch by Matt Bryant. + +- Issue #18347: ElementTree's html serializer now preserves the case of + closing tags. + +- Issue #17261: Ensure multiprocessing's proxies use proper address. + +- Issue #18343: faulthandler.register() now keeps the previous signal handler + when the function is called twice, so faulthandler.unregister() restores + correctly the original signal handler. + +- Issue #17097: Make multiprocessing ignore EINTR. + +- Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a + segfault inside the _pickle C extension. + +- Issue 18240: The HMAC module is no longer restricted to bytes and accepts + any bytes-like object, e.g. memoryview. Original patch by Jonas Borgström. + +- Issue #18224: Removed pydoc script from created venv, as it causes problems + 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 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 + when constructing a MIMEApplication object. + +- Issue #11390: Add -o and -f command line options to the doctest CLI to + specify doctest options (and convert it to using argparse). + +- Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input + string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain() + raises a ValueError if the password is longer than 2 gigabytes. The ssl + module does not support partial write. + +- Issue #11016: Add C implementation of the stat module as _stat. + +- Issue #18248: Fix libffi build on AIX. + +- Issue #18259: Declare sethostname in socketmodule.c for AIX + +- Issue #18147: Add diagnostic functions to ssl.SSLContext(). get_ca_list() + lists all loaded CA certificates and cert_store_stats() returns amount of + loaded X.509 certs, X.509 CA certs and CRLs. + +- Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data + when \r\n appears at end of 65535 bytes without other newlines. + +- Issue #18076: Introduce importlib.util.decode_source(). +- Issue #18357: add tests for dictview set difference. + Patch by Fraser Tweedale. + +- importlib.abc.SourceLoader.get_source() no longer changes SyntaxError or + UnicodeDecodeError into ImportError. + +- Issue #18058, 18057: Make the namespace package loader meet the + importlib.abc.InspectLoader ABC, allowing for namespace packages to work with + runpy. + +- Issue #17177: The imp module is pending deprecation. + +- subprocess: Prevent a possible double close of parent pipe fds when the + subprocess exec runs into an error. Prevent a regular multi-close of the + /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL. + +- Issue #18194: Introduce importlib.util.cache_from_source() and + source_from_cache() while documenting the equivalent functions in imp as + deprecated. + +- Issue #17907: Document imp.new_module() as deprecated in favour of + types.ModuleType. + +- Issue #18192: Introduce importlib.util.MAGIC_NUMBER and document as deprecated + imp.get_magic(). + +- Issue #18149: Add filecmp.clear_cache() to manually clear the filecmp cache. + Patch by Mark Levitt + +- Issue #18193: Add importlib.reload(). + +- Issue #18157: Stop using imp.load_module() in pydoc. + +- Issue #16102: Make uuid._netbios_getnode() work again on Python 3. + +- Issue #17134: Add ssl.enum_cert_store() as interface to Windows' cert store. + +- Issue #18143: Implement ssl.get_default_verify_paths() in order to debug + the default locations for cafile and capath. + +- Issue #17314: Move multiprocessing.forking over to importlib. + +- Issue #11959: SMTPServer and SMTPChannel now take an optional map, use of + which avoids affecting global state. + +- Issue #18109: os.uname() now decodes fields from the locale encoding, and + socket.gethostname() now decodes the hostname from the locale encoding, + instead of using the UTF-8 encoding in strict mode. + +- Issue #18089: Implement importlib.abc.InspectLoader.load_module. + +- Issue #18088: Introduce importlib.abc.Loader.init_module_attrs for setting + module attributes. Leads to the pending deprecation of + importlib.util.module_for_loader. + +- Issue #17403: urllib.parse.robotparser normalizes the urls before adding to + ruleline. This helps in handling certain types invalid urls in a conservative + manner. Patch contributed by Mher Movsisyan. + +- Issue #18070: Have importlib.util.module_for_loader() set attributes + unconditionally in order to properly support reloading. + +- Added importlib.util.module_to_load to return a context manager to provide the + proper module object to load. + +- Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw + stream's read() returns more bytes than requested. + +- Issue #18011: base64.b32decode() now raises a binascii.Error if there are + non-alphabet characters present in the input string to conform a docstring. + Updated the module documentation. + +- Issue #18072: Implement importlib.abc.InspectLoader.get_code() and + importlib.abc.ExecutionLoader.get_code(). + +- Issue #8240: Set the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag on SSL + sockets. + +- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X + with port None or "0" and flags AI_NUMERICSERV. + +- Issue #16986: ElementTree now correctly parses a string input not only when + an internal XML encoding is UTF-8 or US-ASCII. + +- Issue #17996: socket module now exposes AF_LINK constant on BSD and OSX. + +- Issue #17900: Allowed pickling of recursive OrderedDicts. Decreased pickled + size and pickling time. + +- Issue #17914: Add os.cpu_count(). Patch by Yogesh Chaudhari, based on an + initial patch by Trent Nelson. + +- Issue #17812: Fixed quadratic complexity of base64.b32encode(). + Optimize base64.b32encode() and base64.b32decode() (speed up to 3x). + +- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of + service using certificates with many wildcards (CVE-2013-2099). + +- Issue #15758: Fix FileIO.readall() so it no longer has O(n**2) complexity. + +- Issue #14596: The struct.Struct() objects now use more compact implementation. + +- Issue #17981: Closed socket on error in SysLogHandler. + +- Issue #17964: Fix os.sysconf(): the return type of the C sysconf() function + is long, not int. + +- Fix typos in the multiprocessing module. + +- Issue #17754: Make ctypes.util.find_library() independent of the locale. + +- Issue #17968: Fix memory leak in os.listxattr(). + +- Issue #17606: Fixed support of encoded byte strings in the XMLGenerator + characters() and ignorableWhitespace() methods. Original patch by Sebastian + Ortiz Vasquez. + +- Issue #17732: Ignore distutils.cfg options pertaining to install paths if a + virtual environment is active. + +- Issue #17915: Fix interoperability of xml.sax with file objects returned by + codecs.open(). + +- Issue #16601: Restarting iteration over tarfile no more continues from where + it left off. Patch by Michael Birtwell. + +- Issue #17289: The readline module now plays nicer with external modules + or applications changing the rl_completer_word_break_characters global + variable. Initial patch by Bradley Froehle. + +- Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit + platforms. Patch by Federico Schwindt. + +- Issue #11816: multiple improvements to the dis module: get_instructions + generator, ability to redirect output to a file, Bytecode and Instruction + abstractions. Patch by Nick Coghlan, Ryan Kelly and Thomas Kluyver. + +- Issue #13831: Embed stringification of remote traceback in local + traceback raised when pool task raises an exception. + +- Issue #15528: Add weakref.finalize to support finalization using + weakref callbacks. + +- Issue #14173: Avoid crashing when reading a signal handler during + interpreter shutdown. + +- Issue #15902: Fix imp.load_module() accepting None as a file when loading an + extension module. + +- Issue #13721: SSLSocket.getpeercert() and SSLSocket.do_handshake() now + raise an OSError with ENOTCONN, instead of an AttributeError, when the + SSLSocket is not connected. + +- Issue #14679: add an __all__ (that contains only HTMLParser) to html.parser. + +- Issue #17802: Fix an UnboundLocalError in html.parser. Initial tests by + Thomas Barlow. + +- Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by + extention load_module()) now have a better chance of working when reloaded. + +- Issue #17804: New function ``struct.iter_unpack`` allows for streaming + struct unpacking. + +- Issue #17830: When keyword.py is used to update a keyword file, it now + preserves the line endings of the original file. + +- Issue #17272: Making the urllib.request's Request.full_url a descriptor. + Fixes bugs with assignment to full_url. Patch by Demian Brecht. + +- Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures + +- Issue #11714: Use 'with' statements to assure a Semaphore releases a + condition variable. Original patch by Thomas Rachel. + +- Issue #16624: `subprocess.check_output` now accepts an `input` argument, + allowing the subprocess's stdin to be provided as a (byte) string. + Patch by Zack Weinberg. + +- Issue #17795: Reverted backwards-incompatible change in SysLogHandler with + Unix domain sockets. + +- Issue #16694: Add a pure Python implementation of the operator module. + Patch by Zachary Ware. + +- Issue #11182: remove the unused and undocumented pydoc.Scanner class. + Patch by Martin Morrison. + +- Issue #17741: Add ElementTree.IncrementalParser, an event-driven parser + for non-blocking applications. + +- Issue #17555: Fix ForkAwareThreadLock so that size of after fork + registry does not grow exponentially with generation of process. + +- Issue #17707: multiprocessing.Queue's get() method does not block for short + timeouts. + +- Isuse #17720: Fix the Python implementation of pickle.Unpickler to correctly + process the APPENDS opcode when it is used on non-list objects. + +- Issue #17012: shutil.which() no longer fallbacks to the PATH environment + variable if empty path argument is specified. Patch by Serhiy Storchaka. + +- Issue #17710: Fix pickle raising a SystemError on bogus input. + +- Issue #17341: Include the invalid name in the error messages from re about + invalid group names. + +- Issue #17702: os.environ now raises KeyError with the original environment + variable name (str on UNIX), instead of using the encoded name (bytes on + UNIX). + +- Issue #16163: Make the importlib based version of pkgutil.iter_importers + work for submodules. Initial patch by Berker Peksag. + +- Issue #16804: Fix a bug in the 'site' module that caused running + 'python -S -m site' to incorrectly throw an exception. + +- Issue #15480: Remove the deprecated and unused TYPE_INT64 code from marshal. + Initial patch by Daniel Riti. + +- Issue #2118: SMTPException is now a subclass of IOError. + +- Issue #17016: Get rid of possible pointer wraparounds and integer overflows + in the re module. Patch by Nickolai Zeldovich. + +- Issue #16658: add missing return to HTTPConnection.send() + Patch by Jeff Knupp. + +- Issue #9556: Allowed specifying a time-of-day for a TimedRotatingFileHandler + to rotate. + +- Issue #14971: unittest test discovery no longer gets confused when a function + has a different __name__ than its name in the TestCase class dictionary. + +- Issue #17487: The wave getparams method now returns a namedtuple rather than + a plain tuple. + +- Issue #17675: socket repr() provides local and remote addresses (if any). + Patch by Giampaolo Rodola' + +- Issue #17093: Make the ABCs in importlib.abc provide default values or raise + reasonable exceptions for their methods to make them more amenable to super() + calls. + +- Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an + abstractmethod and raising NotImplementedError so as to be ignored by default. + +- Issue #17678: Remove the use of deprecated method in http/cookiejar.py. + Changing the usage of get_origin_req_host() to origin_req_host. + +- Issue #17666: Fix reading gzip files with an extra field. + +- Issue #16475: Support object instancing, recursion and interned strings + in marshal + +- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator. + +- Issue #16795: On the ast.arguments object, unify vararg with varargannotation + and kwarg and kwargannotation. Change the column offset of ast.Attribute to be + at the attribute name. + +- Issue #17434: Properly raise a SyntaxError when a string occurs between future + imports. + +- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when + it has a value of None or the attribute doesn't exist. + +- Issue #17032: The "global" in the "NameError: global name 'x' is not defined" + error message has been removed. Patch by Ram Rachum. + +- Issue #18080: When building a C extension module on OS X, if the compiler + 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 + set_userptr() method. Reported by Atsuo Ishimoto. + +- Implement PEP 443 "Single-dispatch generic functions". + +- Implement PEP 435 "Adding an Enum type to the Python standard library". + +- Issue #15596: Faster pickling of unicode strings. + +- Issue #17572: Avoid chained exceptions while passing bad directives to + time.strptime(). Initial patch by Claudiu Popa. + +- Issue #17435: threading.Timer's __init__ method no longer uses mutable + default values for the args and kwargs parameters. + +- Issue #17526: fix an IndexError raised while passing code without filename to + inspect.findsource(). Initial patch by Tyler Doyle. + - Issue #17540: Added style to formatter configuration by dict. +- Issue #16692: The ssl module now supports TLS 1.1 and TLS 1.2. Initial + patch by Michele Orrù. + +- Issue #17025: multiprocessing: Reduce Queue and SimpleQueue contention. + - Issue #17536: Add to webbrowser's browser list: www-browser, x-www-browser, iceweasel, iceape. +- Issue #17150: pprint now uses line continuations to wrap long string + literals. + - Issue #17488: Change the subprocess.Popen bufsize parameter default value from unbuffered (0) to buffering (-1) to match the behavior existing code expects and match the behavior of the subprocess module in Python 2 to avoid @@ -1317,6 +2147,18 @@ Library sending mail by closing the socket and reporting the 421 error code via the exception appropriate to the command that received the error response. +- Issue #16997: unittest.TestCase now provides a subTest() context manager + to procedurally generate, in an easy way, small test instances. + +- Issue #17485: Also delete the Request Content-Length header if the data + attribute is deleted. (Follow on to issue 16464). + +- Issue #15927: CVS now correctly parses escaped newlines and carriage + when parsing with quoting turned off. + +- Issue #17467: add readline and readlines support to mock_open in + unittest.mock. + - Issue #17192: Update the ctypes module's libffi to v3.0.13. This specifically addresses a stack misalignment issue on x86 and issues on some more recent platforms. @@ -1330,20 +2172,51 @@ Library - Issue #17476: Fixed regression relative to Python2 in undocumented pydoc 'allmethods'; it was missing unbound methods on the class. +- Issue #17474: Remove the deprecated methods of Request class. + +- Issue #16709: unittest discover order is no-longer filesystem specific. Patch + by Jeff Ramnani. + +- Use the HTTPS PyPI url for upload, overriding any plain HTTP URL in pypirc. + +- Issue #5024: sndhdr.whichhdr now returns the frame count for WAV files + rather than -1. + +- Issue #17460: Remove the strict argument of HTTPConnection and removing the + DeprecationWarning being issued from 3.2 onwards. + - Issue #16880: Do not assume _imp.load_dynamic() is defined in the imp module. - Issue #16389: Fixed a performance regression relative to Python 3.1 in the caching of compiled regular expressions. +- Added missing FeedParser and BytesFeedParser to email.parser.__all__. + - Issue #17431: Fix missing import of BytesFeedParser in email.parser. +- Issue #12921: http.server's send_error takes an explain argument to send more + information in response. Patch contributed by Karl. + +- Issue #17414: Add timeit, repeat, and default_timer to timeit.__all__. + - Issue #1285086: Get rid of the refcounting hack and speed up urllib.parse.unquote() and urllib.parse.unquote_to_bytes(). +- Issue #17099: Have importlib.find_loader() raise ValueError when __loader__ + is not set, harmonizing with what happens when the attribute is set to None. + +- Expose the O_PATH constant in the os module if it is available. + - Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused a failure while decoding empty object literals when object_pairs_hook was specified. +- Issue #17385: Fix quadratic behavior in threading.Condition. The FIFO + queue now uses a deque instead of a list. + +- Issue #15806: Add contextlib.ignore(). This creates a context manager to + ignore specified exceptions, replacing the "except SomeException: pass" idiom. + - Issue #14645: The email generator classes now produce output using the specified linesep throughout. Previously if the prolog, epilog, or body were stored with a different linesep, that linesep was used. This @@ -1355,18 +2228,30 @@ Library - Issue #16962: Use getdents64 instead of the obsolete getdents syscall in the subprocess module on Linux. +- Issue #16935: unittest now counts the module as skipped if it raises SkipTest, + instead of counting it as an error. Patch by Zachary Ware. + - Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR. - Issue #17223: array module: Fix a crasher when converting an array containing invalid characters (outside range [U+0000; U+10ffff]) to Unicode: repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob. +- Issue #17197: profile/cProfile modules refactored so that code of run() and + runctx() utility functions is not duplicated in both modules. + - Issue #14720: sqlite3: Convert datetime microseconds correctly. Patch by Lowe Thiderman. +- Issue #15132: Allow a list for the defaultTest argument of + unittest.TestProgram. Patch by Jyrki Pulliainen. + - Issue #17225: JSON decoder now counts columns in the first line starting with 1, as in other lines. +- Issue #6623: Added explicit DeprecationWarning for ftplib.netrc, which has + been deprecated and undocumented for a long time. + - Issue #13700: Fix byte/string handling in imaplib authentication when an authobject is specified. @@ -1383,11 +2268,19 @@ Library - Issue #17143: Fix a missing import in the trace module. Initial patch by Berker Peksag. +- Issue #15220: email.feedparser's line splitting algorithm is now simpler and + faster. + - Issue #16743: Fix mmap overflow check on 32 bit Windows. +- Issue #16996: webbrowser module now uses shutil.which() to find a + web-browser on the executable search path. + - Issue #16800: tempfile.gettempdir() no longer left temporary files when the disk is full. Original patch by Amir Szekely. +- Issue #17192: Import libffi-3.0.12. + - Issue #16564: Fixed regression relative to Python2 in the operation of email.encoders.encode_7or8bit when used with binary data. @@ -1405,6 +2298,9 @@ Library - Issue #6975: os.path.realpath() now correctly resolves multiple nested symlinks on POSIX platforms. +- Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the + 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. @@ -1423,6 +2319,9 @@ Library - Issue #16723: httplib.HTTPResponse no longer marked closed when the connection is automatically closed. +- Issue #15359: Add CAN_BCM protocol support to the socket module. Patch by + Brian Thorne. + - Issue #16948: Fix quoted printable body encoding for non-latin1 character sets in the email package. @@ -1447,6 +2346,10 @@ Library stream or a decoder produces data of an unexpected type (i.e. when io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec). +- Issue #17015: When it has a spec, a Mock object now inspects its signature + when matching calls, so that arguments can be matched positionally or + by name. + - Issue #15633: httplib.HTTPResponse is now mark closed when the server sends less than the advertised Content-Length. @@ -1466,6 +2369,14 @@ Library - Issue #12004: Fix an internal error in PyZipFile when writing an invalid Python file. Patch by Ben Morgan. +- Have py_compile use importlib as much as possible to avoid code duplication. + Code now raises FileExistsError if the file path to be used for the + byte-compiled file is a symlink or non-regular file as a warning that import + will not keep the file path type if it writes to that path. + +- Issue #180022: Have site.addpackage() consider already known paths even when + none are explicitly passed in. Bug report and fix by Kirill. + - Issue #1602133: on Mac OS X a shared library build (``--enable-shared``) now fills the ``os.environ`` variable correctly. @@ -1482,6 +2393,9 @@ Library current directory on Unix and no longer searches a relative file path with a directory part in PATH directories. Patch by Thomas Kluyver. +- Issue #1159051: GzipFile now raises EOFError when reading a corrupted file + with truncated header or footer. + - Issue #16993: shutil.which() now preserves the case of the path and extension on Windows. @@ -1494,8 +2408,6 @@ Library - Issue #15861: tkinter now correctly works with lists and tuples containing strings with whitespaces, backslashes or unbalanced braces. -- Issue #10527: Use poll() instead of select() for multiprocessing pipes. - - Issue #9720: zipfile now writes correct local headers for files larger than 4 GiB. @@ -1504,6 +2416,13 @@ Library - SSLContext.load_dh_params() now properly closes the input file. +- Issue #15031: Refactor some .pyc management code to cut down on code + duplication. Thanks to Ronan Lamy for the report and taking an initial stab + at the problem. + +- Issue #16398: Optimize deque.rotate() so that it only moves pointers + and doesn't touch the underlying data with increfs and decrefs. + - Issue #16900: Issue a ResourceWarning when an ssl socket is left unclosed. - Issue #13899: \A, \Z, and \B now correctly match the A, Z, and B literals @@ -1513,12 +2432,29 @@ Library failing if the connection used a row factory (such as sqlite3.Row) that produced unsortable objects. (Regression was introduced by fix for 9750). +- fcntl: add F_DUPFD_CLOEXEC constant, available on Linux 2.6.24+. + - Issue #15972: Fix error messages when os functions expecting a file name or file descriptor receive the incorrect type. +- Issue #8109: The ssl module now has support for server-side SNI, thanks + to a :meth:`SSLContext.set_servername_callback` method. Patch by Daniel + Black. + +- Issue #16860: In tempfile, use O_CLOEXEC when available to set the + close-on-exec flag atomically. + +- Issue #16674: random.getrandbits() is now 20-40% faster for small integers. + +- Issue #16009: JSON error messages now provide more information. + - Issue #16828: Fix error incorrectly raised by bz2.compress(b'') and bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman. +- Issue #16833: In http.client.HTTPConnection, do not concatenate the request + headers and body when the payload exceeds 16 KB, since it can consume more + memory for no benefit. Patch by Benno Leslie. + - Issue #16541: tk_setPalette() now works with keyword arguments. - Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError. @@ -1534,14 +2470,21 @@ Library - Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy. +- Issue #16787: Increase asyncore and asynchat default output buffers size, to + decrease CPU usage and increase throughput. + - Issue #10527: make multiprocessing use poll() instead of select() if available. - Issue #16688: Now regexes contained backreferences correctly work with non-ASCII strings. Patch by Matthew Barnett. +- Issue #16486: Make aifc files act as context managers. + - Issue #16485: Now file descriptors are closed if file header patching failed on closing an aifc file. +- Issue #16640: Run less code under a lock in sched module. + - Issue #16165: sched.scheduler.run() no longer blocks a scheduler for other threads. @@ -1551,6 +2494,8 @@ Library - Issue #16618: Make glob.glob match consistently across strings and bytes regarding leading dots. Patch by Serhiy Storchaka. +- Issue #16788: Add samestat to Lib/ntpath.py + - Issue #16713: Parsing of 'tel' urls using urlparse separates params from path. @@ -1572,10 +2517,25 @@ Library supports all None default values present in decimal.py. These values were largely undocumented. +- Issue #11175: argparse.FileType now accepts encoding and errors + arguments. Patch by Lucas Maystre. + +- Issue #16488: epoll() objects now support the `with` statement. Patch + by Serhiy Storchaka. + - Issue #16298: In HTTPResponse.read(), close the socket when there is no Content-Length and the incoming stream is finished. Patch by Eran Rundstein. +- Add abc.ABC class to use inheritance rather than a direct invocation of + ABCMeta metaclass. Patch by Bruno Dupuis. + +- Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're + available. + +- Issue #15701: Add a .headers attribute to urllib.error.HTTPError. Patch + contributed by Berker Peksag. + - Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree that caused it to not ignore certain errors when ignore_errors was set. Patch by Alessandro Moura and Serhiy Storchaka. @@ -1583,6 +2543,9 @@ Library - Issue #16248: Disable code execution from the user's home directory by tkinter when the -E flag is passed to Python. Patch by Zachary Ware. +- Issue #13390: New function :func:`sys.getallocatedblocks()` returns the + number of memory blocks currently allocated. + - Issue #16628: Fix a memory leak in ctypes.resize(). - Issue #13614: Fix setup.py register failure with invalid rst in description. @@ -1603,6 +2566,9 @@ Library - Issue #10182: The re module doesn't truncate indices to 32 bits anymore. Patch by Serhiy Storchaka. +- Issue #16333: use (",", ": ") as default separator when indent is specified + to avoid trailing whitespace. Patch by Serhiy Storchaka. + - Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous list() calls aren't added to filter(), map(), and zip() which are directly passed enumerate(). @@ -1611,17 +2577,46 @@ Library lengths as unsigned 32-bit integers, like the C implementation does. Patch by Serhiy Storchaka. +- Issue #16423: urllib.request now has support for ``data:`` URLs. Patch by + Mathias Panzenböck. + +- Issue #4473: Add a POP3.stls() to switch a clear-text POP3 session into + an encrypted POP3 session, on supported servers. Patch by Lorenzo Catucci. + +- Issue #4473: Add a POP3.capa() method to query the capabilities advertised + by the POP3 server. Patch by Lorenzo Catucci. + +- Issue #4473: Ensure the socket is shutdown cleanly in POP3.close(). + Patch by Lorenzo Catucci. + +- Issue #16522: added FAIL_FAST flag to doctest. + +- Issue #15627: Add the importlib.abc.InspectLoader.source_to_code() method. + - Issue #16408: Fix file descriptors not being closed in error conditions in the zipfile module. Patch by Serhiy Storchaka. +- Issue #14631: Add a new :class:`weakref.WeakMethod` to simulate weak + references to bound methods. + +- Issue #16469: Fix exceptions from float -> Fraction and Decimal -> Fraction + conversions for special values to be consistent with those for float -> int + and Decimal -> int. Patch by Alexey Kachayev. + - Issue #16481: multiprocessing no longer leaks process handles on Windows. +- Issue #12428: Add a pure Python implementation of functools.partial(). + Patch by Brian Thorne. + - Issue #16140: The subprocess module no longer double closes its child subprocess.PIPE parent file descriptors on child error prior to exec(). - Remove a bare print to stdout from the subprocess module that could have happened if the child process wrote garbage to its pre-exec error pipe. +- The subprocess module now raises its own SubprocessError instead of a + RuntimeError in various error situations which should not normally happen. + - Issue #16327: The subprocess module no longer leaks file descriptors used for stdin/stdout/stderr pipes to the child when fork() fails. @@ -1642,6 +2637,9 @@ Library - Issue #16431: Use the type information when constructing a Decimal subtype from a Decimal argument. +- Issue #15641: Clean up deprecated classes from importlib + Patch by Taras Lyapun. + - Issue #16350: zlib.decompressobj().decompress() now accumulates data from successive calls after EOF in unused_data, instead of only saving the argument to the last call. decompressobj().flush() now correctly sets unused_data and @@ -1654,30 +2652,57 @@ Library - Issue #16152: fix tokenize to ignore whitespace at the end of the code when no newline is found. Patch by Ned Batchelder. +- Issue #16284: Prevent keeping unnecessary references to worker functions + in concurrent.futures ThreadPoolExecutor. + - 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 while it is being encoded. Patch by Serhiy Storchaka. +- Issue #16351: New function gc.get_stats() returns per-generation collection + statistics. + - Issue #14897: Enhance error messages of struct.pack and struct.pack_into. Patch by Matti Mäki. +- Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions. + Patch by Serhiy Storchaka. + - Issue #12890: cgitb no longer prints spurious <p> tags in text mode when the logdir option is specified. - Issue #16307: Fix multiprocessing.Pool.map_async not calling its callbacks. Patch by Janne Karila. -- Issue #16250: Fix URLError invocation with proper args. +- Issue #16305: Fix a segmentation fault occurring when interrupting + math.factorial. - Issue #16116: Fix include and library paths to be correct when building C extensions in venvs. - 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:// + urls. + +- Issue #16250: Fix the invocations of URLError which had misplaced filename + attribute for exception. + +- Issue #10836: Fix exception raised when file not found in urlretrieve + Initial patch by Ezio Melotti. + - Issue #14398: Fix size truncation and overflow bugs in the bz2 module. +- Issue #12692: Fix resource leak in urllib.request when talking to an HTTP + server that does not include a ``Connection: close`` header in its responses. + +- Issue #12034: Fix bogus caching of result in check_GetFinalPathNameByHandle. + Patch by Atsuo Ishimoto. + +- Improve performance of `lzma.LZMAFile`. + - Issue #16220: wsgiref now always calls close() on an iterable response. Patch by Brent Tubbs. @@ -1689,27 +2714,37 @@ Library - Issue #16176: Properly identify Windows 8 via platform.platform() +- Issue #16088: BaseHTTPRequestHandler's send_error method includes a + 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 keyword arguments specified a path that did not exist. - Issue #16169: Fix ctypes.WinError()'s confusion between errno and winerror. -- Issue #16076: Made _elementtree.Element pickleable in a way that is compatible - with the Python Element. Pickling/unpickling of xml.etree.ElementTree.Element - works again - this was a temporary regression from 3.2 where the by-default - imported _elementtree had no pickling capability. +- Issue #1492704: shutil.copyfile() raises a distinct SameFileError now if + source and destination are the same file. Patch by Atsuo Ishimoto. + +- Issue #13896: Make shelf instances work with 'with' as context managers. + Original patch by Filip Gruszczyński. + +- Issue #15417: Add support for csh and fish in venv activation scripts. + +- Issue #14377: ElementTree.write and some of the module-level functions have + a new parameter - *short_empty_elements*. It controls how elements with no + contents are emitted. - Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element element_factory (fixes a regression in SimpleTAL). -- Issue #16913: Fix Element.itertext()'s handling of text with XML entities., +- Issue #9650: List commonly used format codes in time.strftime and + time.strptime docsttings. Original patch by Mike Hoy. - Issue #16034: Fix performance regressions in the new `bz2.BZ2File` implementation. Initial patch by Serhiy Storchaka. -- Issue #16112: platform.architecture does not correctly escape argument to - /usr/bin/file. Patch by David Benjamin. +- `pty.spawn()` now returns the child process status returned by `os.waitpid()`. - Issue #15756: `subprocess.poll()` now properly handles `errno.ECHILD` to return a returncode of 0 when the child has already exited or cannot be waited @@ -1729,6 +2764,9 @@ Library - Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after `datetime.MAXYEAR`. Patch by Cédric Krier. +- Issue #16112: platform.architecture does not correctly escape argument to + /usr/bin/file. Patch by David Benjamin. + - Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML elements 'meta' and 'param'. @@ -1751,22 +2789,103 @@ Library Popen when ``%action`` substitutions produce empty strings. - Issue #12776, issue #11839: Call `argparse` type function (specified by - add_argument) only once. Before, the type function was called twice in the + add_argument) only once. Before, the type function was called twice in the case where the default was specified and the argument was given as well. This was especially problematic for the FileType type, as a default file would always be opened, even if a file argument was specified on the command line. -- Issue #15906: Fix a regression in `argparse` caused by the preceding change, +- Issue #15906: Fix a regression in argparse caused by the preceding change, when ``action='append'``, ``type='str'`` and ``default=[]``. +- Issue #16113: Added sha3 module based on the Keccak reference implementation + 3.2. The `hashlib` module has four additional hash algorithms: `sha3_224`, + `sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common + code was moved from _hashopenssl.c to hashlib.h. + +- ctypes.call_commethod was removed, since its only usage was in the defunct + samples directory. + +- Issue #16692: Added TLSv1.1 and TLSv1.2 support for the ssl modules. + +- Issue #16832: add abc.get_cache_token() to expose cache validity checking + support in ABCMeta. + IDLE ---- +- Issue #18429: Format / Format Paragraph, now works when comment blocks + are selected. As with text blocks, this works best when the selection + only includes complete lines. + +- Issue #18226: Add docstrings and unittests for FormatParagraph.py. + Original patches by Todd Rovito and Phil Webster. + +- Issue #18279: Format - Strip trailing whitespace no longer marks a file as + changed when it has not been changed. This fix followed the addition of a + test file originally written by Phil Webster (the issue's main goal). + +- Issue #7136: In the Idle File menu, "New Window" is renamed "New File". + Patch by Tal Einat, Roget Serwy, and Todd Rovito. + +- Remove dead imports of imp. + +- Issue #18196: Avoid displaying spurious SystemExit tracebacks. + +- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition. + +- Issue #17511: Keep IDLE find dialog open after clicking "Find Next". + Original patch by Sarah K. + +- Issue #18055: Move IDLE off of imp and on to importlib. + +- Issue #15392: Create a unittest framework for IDLE. + Initial patch by Rajagopalasarma Jayakrishnan. + See Lib/idlelib/idle_test/README.txt for how to run Idle tests. + +- Issue #14146: Highlight source line while debugging on Windows. + +- Issue #17838: Allow sys.stdin to be reassigned. + +- Issue #13495: Avoid loading the color delegator twice in IDLE. + +- Issue #17798: Allow IDLE to edit new files when specified on command line. + +- Issue #14735: Update IDLE docs to omit "Control-z on Windows". + +- Issue #17532: Always include Options menu for IDLE on OS X. + Patch by Guilherme Simões. + +- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit(). + +- Issue #17657: Show full Tk version in IDLE's about dialog. + Patch by Todd Rovito. + +- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE. + +- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE. + +- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box. + +- Issue #17625: In IDLE, close the replace dialog after it is used. + +- Issue #14254: IDLE now handles readline correctly across shell restarts. + +- Issue #17614: IDLE no longer raises exception when quickly closing a file. + +- Issue #6698: IDLE now opens just an editor window when configured to do so. + +- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer + raises an exception. + +- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo. + - Issue #17114: IDLE now uses non-strict config parser. - Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase interface and support all mandatory methods and properties. +- Issue #5066: Update IDLE docs. Patch by Todd Rovito. + - Issue #16829: IDLE printing no longer fails if there are spaces or other special characters in the file path. @@ -1783,9 +2902,97 @@ IDLE - Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu Patch by Todd Rovito. +- Issue #16123: IDLE - deprecate running without a subprocess. + Patch by Roger Serwy. + Tests ----- +- Issue #1666318: Add a test that shutil.copytree() retains directory + permissions. Patch by Catherine Devlin. + +- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json + and make them discoverable by unittest. Patch by Zachary Ware. + +- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger). + +- Issue #18396: Fix spurious test failure in test_signal on Windows when + faulthandler is enabled (Patch by Jeremy Kloth) + +- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess. + +- Issue #15415: Add new temp_dir() and change_cwd() context managers to + test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek. + +- Issue #15494: test.support is now a package rather than a module (Initial + patch by Indra Talip) + +- Issue #17944: test_zipfile now discoverable and uses subclassing to + generate tests for different compression types. Fixed a bug with skipping + some tests due to use of exhausted iterators. + +- Issue #18266: test_largefile now works with unittest test discovery and + supports running only selected tests. Patch by Zachary Ware. + +- Issue #17767: test_locale now works with unittest test discovery. + Original patch by Zachary Ware. + +- Issue #18375: Assume --randomize when --randseed is used for running the + testsuite. + +- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé. + +- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds + in ASN1_TIME fields. + +- Issue #18094: test_uuid no more reports skipped tests as passed. + +- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't + accidentally hang. + +- Issue #17833: Fix test_gdb failures seen on machines where debug symbols + for glibc are available (seen on PPC64 Linux). + +- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython. + Initial patch by Dino Viehland. + +- Issue #11078: test___all__ now checks for duplicates in __all__. + Initial patch by R. David Murray. + +- Issue #17712: Fix test_gdb failures on Ubuntu 13.04. + +- Issue #17835: Fix test_io when the default OS pipe buffer size is larger + than one million bytes. + +- Issue #17065: Use process-unique key for winreg tests to avoid failures if + test is run multiple times in parallel (eg: on a buildbot host). + +- Issue #12820: add tests for the xml.dom.minicompat module. + Patch by John Chandler and Phil Connell. + +- Issue #17691: test_univnewlines now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #17790: test_set now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #17789: test_random now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #17779: test_osx_env now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #17766: test_iterlen now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #17690: test_time now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #17692: test_sqlite now works with unittest test discovery. + Patch by Zachary Ware. + +- Issue #11995: test_pydoc doesn't import all sys.path modules anymore. + - Issue #17448: test_sax now skips if there are no xml parsers available instead of raising an ImportError. @@ -1803,8 +3010,15 @@ Tests - Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu. +- Issue #17283: Share code between `__main__.py` and `regrtest.py` in + `Lib/test`. + - Issue #17249: convert a test in test_capi to use unittest and reap threads. +- Issue #17107: Test client-side SNI support in urllib.request thanks to + the new server-side SNI support in the ssl module. Initial patch by + Daniel Black. + - Issue #17041: Fix testing when Python is configured with the --without-doc-strings. @@ -1812,6 +3026,8 @@ Tests - Issue #15539: Added regression tests for Tools/scripts/pindent.py. +- Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host. + - Issue #17479: test_io now works with unittest test discovery. Patch by Zachary Ware. @@ -1871,6 +3087,11 @@ Tests - Issue #16748: test_heapq now works with unittest test discovery. +- Issue #10646: Tests rearranged for os.samefile/samestat to check for not + just symlinks but also hard links. + +- Issue #15302: Switch regrtest from using getopt to using argparse. + - Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize options. @@ -1880,6 +3101,9 @@ Tests - Issue #16664: Add regression tests for glob's behaviour concerning entries starting with a ".". Patch by Sebastian Kreft. +- Issue #13390: The ``-R`` option to regrtest now also checks for memory + allocation leaks, using :func:`sys.getallocatedblocks()`. + - Issue #16559: Add more tests for the json module, including some from the official test suite at json.org. Patch by Serhiy Storchaka. @@ -1898,7 +3122,7 @@ Tests - Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by Serhiy Storchaka. -- Issue #15557: Add a test suite for the `webbrowser` module, thanks to Anton +- Issue #15557: Added a test suite for the webbrowser module, thanks to Anton Barkovsky. - Issue #16698: Skip posix test_getgroups when built with OS X @@ -1907,6 +3131,30 @@ Tests Build ----- +- Issue #16067: Add description into MSI file to replace installer's + temporary name. + +- Issue #18257: Fix readlink usage in python-config. Install the python + version again on Darwin. + +- Issue #18481: Add C coverage reporting with gcov and lcov. A new make target + "coverage-report" creates an instrumented Python build, runs unit tests + and creates a HTML. The report can be updated with "make coverage-lcov". + +- Issue #17845: Clarified the message printed when some module are not built. + +- Issue #18256: Compilation fix for recent AIX releases. Patch by + David Edelsohn. + +- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC + 4.8. + +- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1 + on Windows. + +- Issue #17591: Use lowercase filenames when including Windows header files. + Patch by Roumen Petrov. + - Issue #17550: Fix the --enable-profiling configure switch. - Issue #17425: Build with openssl 1.0.1d on Windows. @@ -1922,6 +3170,10 @@ Build - Issue #3718: Use AC_ARG_VAR to set MACHDEP in configure.ac. +- Issue #16235: Implement python-config as a shell script. + +- Issue #16769: Remove outdated Visual Studio projects. + - Issue #17031: Fix running regen in cross builds. - Issue #3754: fix typo in pthread AC_CACHE_VAL. @@ -1929,12 +3181,14 @@ Build - Issue #15484: Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds; use _PYTHON_PROJECT_BASE in distutils/sysconfig.py. +- Drop support for Windows 2000. + - Issue #17029: Let h2py search the multiarch system include directory. - Issue #16953: Fix socket module compilation on platforms with HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong. -- Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host. +- Issue #16320: Remove redundant Makefile dependencies for strings and bytes. - Cross compiling needs host and build settings. configure no longer creates a broken PYTHON_FOR_BUILD variable when --build is missing. @@ -1956,6 +3210,8 @@ Build - Issue #15923: Fix a mistake in ``asdl_c.py`` that resulted in a TypeError after 2801bf875a24 (see #15801). +- Issue #16135: Remove OS/2 support. + - Issue #15819: Make sure we can build Python out-of-tree from a read-only source directory. (Somewhat related to issue #9860.) @@ -1968,11 +3224,54 @@ Build C-API ----- +- Issue #18351: Fix various issues in a function in importlib provided to help + PyImport_ExecCodeModuleWithPathnames() (and thus by extension + PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()). + +- 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. + +- Issue #17206: Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now + expand their arguments once instead of multiple times. Patch written by Illia + Polosukhin. + +- Issue #17522: Add the PyGILState_Check() API. + +- Issue #17327: Add PyDict_SetDefault. + - Issue #16881: Fix Py_ARRAY_LENGTH macro for GCC < 3.1. +- Issue #16505: Remove unused Py_TPFLAGS_INT_SUBCLASS. + +- Issue #16086: PyTypeObject.tp_flags and PyType_Spec.flags are now unsigned + (unsigned long and unsigned int) to avoid an undefined behaviour with + Py_TPFLAGS_TYPE_SUBCLASS ((1 << 31). PyType_GetFlags() result type is + now unsigned too (unsigned long, instead of long). + +- Issue #16166: Add PY_LITTLE_ENDIAN and PY_BIG_ENDIAN macros and unified + endianness detection and handling. + Documentation ------------- +- Issue #17701: Improving strftime documentation. + +- Issue #18440: Clarify that `hash()` can truncate the value returned from an + object's custom `__hash__()` method. + +- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs. + +- Issue #14097: improve the "introduction" page of the tutorial. + +- Issue #17977: The documentation for the cadefault argument's default value + in urllib.request.urlopen() is fixed to match the code. + +- Issue #6696: add documentation for the Profile objects, and improve + profile/cProfile docs. Patch by Tom Pinckney. + +- Issue #15940: Specify effect of locale on time functions. + - Issue 17538: Document XML vulnerabilties - Issue #16642: sched.scheduler timefunc initial default is time.monotonic. @@ -2017,8 +3316,8 @@ Documentation - Issue #13538: Improve str() and object.__str__() documentation. -- Issue #16489: Make it clearer that importlib.find_loader() requires any and - all packages to be separately imported. +- Issue #16489: Make it clearer that importlib.find_loader() needs parent + packages to be explicitly imported. - Issue #16400: Update the description of which versions of a given package PyPI displays. @@ -2041,6 +3340,9 @@ Documentation - Issue #16115: Improve subprocess.Popen() documentation around args, shell, and executable arguments. +- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with + great native-speaker help from R. David Murray. + - Issue #15533: Clarify docs and add tests for `subprocess.Popen()`'s cwd argument. @@ -2061,6 +3363,27 @@ Documentation Tools/Demos ----------- +- Issue #18817: Fix a resource warning in Lib/aifc.py demo. Patch by + Vajrasky Kok. + +- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS. + +- Issue #18448: Fix a typo in Tools/demo/eiffel.py. + +- Issue #18457: Fixed saving of formulas and complex numbers in + Tools/demo/ss1.py. + +- Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by + Févry Thibault. + +- Issue #12990: The "Python Launcher" on OSX could not launch python scripts + that have paths that include wide characters. + +- Issue #15239: Make mkstringprep.py work again on Python 3. + +- Issue #17028: Allowed Python arguments to be supplied to the Windows + launcher. + - Issue #17156: pygettext.py now uses an encoding of source file and correctly writes and escapes non-ascii characters. @@ -2069,9 +3392,18 @@ Tools/Demos improper indentation. pindent.py now works with continued lines broken after "class" or "def" keywords and with continuations at the start of line. -- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka. +- Issue #11797: Add a 2to3 fixer that maps reload() to imp.reload(). + +- Issue #10966: Remove the concept of unexpected skipped tests. + +- Issue #9893: Removed the Misc/Vim directory. + +- Removed the Misc/TextMate directory. -- Issue #16476: Fix json.tool to avoid including trailing whitespace. +- Issue #16245: Add the Tools/scripts/parse_html5_entities.py script to parse + the list of HTML5 entities and update the html.entities.html5 dictionary. + +- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka. - Issue #16549: Make json.tool work again on Python 3 and add tests. Initial patch by Berker Peksag and Serhiy Storchaka. @@ -2079,6 +3411,12 @@ Tools/Demos - Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py Patch by Serhiy Storchaka. +Windows +------- + +- Issue #18569: The installer now adds .py to the PATHEXT variable when extensions + are registered. Patch by Paul Moore. + What's New in Python 3.3.0? =========================== @@ -2166,6 +3504,9 @@ Core and Builtins Library ------- +- Issue #17158: Add 'symbols' to help() welcome message; clarify + 'modules spam' messages. + - Issue #15847: Fix a regression in argparse, which did not accept tuples as argument lists anymore. @@ -2241,6 +3582,8 @@ Core and Builtins Library ------- +- Issue #13248: removed deprecated and undocumented difflib.isbjunk, isbpopular. + - Issue #13370: Ensure that ctypes works on Mac OS X when Python is compiled using the clang compiler. @@ -2656,6 +3999,10 @@ Documentation - Issue #15250: Document that `filecmp.dircmp()` compares files shallowly. Patch contributed by Chris Jerdonek. +- Issue #15442: Expose the default list of directories ignored by + `filecmp.dircmp()` as a module attribute, and expand the list to more modern + values. + Tests ----- @@ -2768,9 +4115,6 @@ Core and Builtins Library ------- -- Issue #16305: Fix a segmentation fault occurring when interrupting - math.factorial. - - Issue #12288: Consider '0' and '0.0' as valid initialvalue for tkinter SimpleDialog. @@ -4465,7 +5809,7 @@ Library - Issue #13589: Fix some serialization primitives in the aifc module. Patch by Oleg Plakhotnyuk. -- Issue #13642: Unquote before b64encoding ``user:password`` during Basic +- Issue #13642: Unquote before b64encoding user:password during Basic Authentication. Patch contributed by Joonas Kuorilehto. - Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor. @@ -4924,8 +6268,8 @@ Library - Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is given as a low fd, it gets overwritten. -- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscate) - a ``Connection: close`` header. +- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates) + ``Connection: close`` header. - Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling. @@ -5483,6 +6827,9 @@ Library - Issue #11635: Don't use polling in worker threads and processes launched by concurrent.futures. +- Issue #5845: Automatically read readline configuration to enable completion + in interactive mode. + - Issue #6811: Allow importlib to change a code object's co_filename attribute to match the path to where the source code currently is, not where the code object originally came from. |