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Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 4364 |
1 files changed, 3364 insertions, 1000 deletions
@@ -2,40 +2,40 @@ Python News +++++++++++ -What's New in Python 3.1.4? +What's New in Python 3.2.1? =========================== -*Release date: XXXX-XX-XX* +*Release date: XX-XXX-20XX* Core and Builtins ----------------- +- Issue #11510: Fixed optimizer bug which turned "a,b={1,1}" into "a,b=(1,1)". + +- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with + 3.2.0 where the stdout or stderr file descriptor being the same as the stdin + file descriptor would raise an exception. webbrowser.open would fail. fixed. + - Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when there are many tags (e.g. when using mq). Patch by Nadeem Vawda. -- Issue #10451: memoryview objects could allow to mutate a readable buffer. - Initial patch by Ross Lagerwall. +- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from + UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode). + Patch written by Ray Allen. -- Issue #10892: Don't segfault when trying to delete __abstractmethods__ from a - class. +- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with + a buffer struct having a NULL data pointer. -- Issue #8020: Avoid a crash where the small objects allocator would read - non-Python managed memory while it is being modified by another thread. - Patch by Matt Bandy. +- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and + sys.stdin uses universal newline (replace '\r\n' by '\n'). -- Issue #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime() - can now handle dates after 2038. +- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on + narrow build. -- Issue #4236: PyModule_Create2 now checks the import machinery directly - rather than the Py_IsInitialized flag, avoiding a Fatal Python - error in certain circumstances when an import is done in __del__. +- Check for NULL result in PyType_FromSpec. -- Issue #10596: Fix float.__mod__ to have the same behaviour as - float.__divmod__ with respect to signed zeros. -4.0 % 4.0 should be - 0.0, not -0.0. - -- Issue #5587: add a repr to dict_proxy objects. Patch by David Stanek and - Daniel Urban. +- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is + empty, instead of OverflowError. Library ------- @@ -44,6 +44,12 @@ Library which was a regression relative to Python2. Unlike Python2, the last line of the folded body now ends with a carriage return. +- Issue #11560: shutil.unpack_archive now correctly handles the format + parameter. Patch by Evan Dandrea. + +- Issue #11133: fix two cases where inspect.getattr_static can trigger code + execution. Patch by Andreas Stührk. + - Issue #11569: use absolute path to the sysctl command in multiprocessing to ensure that it will be found regardless of the shell PATH. This ensures that multiprocessing.cpu_count works on default installs of MacOSX. @@ -52,10 +58,16 @@ Library not installed. Instead, the zipfile.ZIP_STORED compression is used to create the ZipFile. Patch by Natalia B. Bidart. +- Issue #11554: Fixed support for Japanese codecs; previously the body output + encoding was not done if euc-jp or shift-jis was specified as the charset. + +- Issue #11500: Fixed a bug in the os x proxy bypass code for fully qualified + IP addresses in the proxy exception list. + - Issue #11491: dbm.error is no longer raised when dbm.open is called with the "n" as the flag argument and the file exists. The behavior matches the documentation and general logic. - + - Issue #11131: Fix sign of zero in decimal.Decimal plus and minus operations when the rounding mode is ROUND_FLOOR. @@ -66,49 +78,217 @@ Library ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a TypeError. Patch by Charles-François Natali. +- Issue #11306: mailbox in certain cases adapts to an inability to open + certain files in read-write mode. Previously it detected this by + checking for EACCES, now it also checks for EROFS. + - Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors on accept(), send() and recv(). -- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers - larger than 4GB. Patch by Nadeem Vawda. +- Issue #11326: Add the missing connect_ex() implementation for SSL sockets, + and make it work for non-blocking connects. + +- Issue #7322: Trying to read from a socket's file-like object after a timeout + occurred now raises an error instead of silently losing data. + +- Issue #10956: Buffered I/O classes retry reading or writing after a signal + has arrived and the handler returned successfully. + +- Issue #11224: Fixed a regression in tarfile that affected the file-like + objects returned by TarFile.extractfile() regarding performance, memory + consumption and failures with the stream interface. + +- Issue #11074: Make 'tokenize' so it can be reloaded. - Issue #4681: Allow mmap() to work on file sizes and offsets larger than 4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for 32-bit Windows. -- email.header.Header was incorrectly encoding folding white space when - rfc2047-encoding header values with embedded newlines, leaving them - without folding whitespace. It now uses the continuation_ws, as it - does for continuation lines that it creates itself. +- Issue #11089: Fix performance issue limiting the use of ConfigParser() + with large config files. -- Issue #10360: In WeakSet, do not raise TypeErrors when testing for - membership of non-weakrefable objects. +- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers + larger than 4GB. Patch by Nadeem Vawda. -- Issue #10549: Fix pydoc traceback when text-documenting certain classes. +Build +----- -- Issue #11110: Fix _sqlite to not deref a NULL when module creation fails. +- Issue #11411: Fix 'make DESTDIR=' with a relative destination. -- Issue #11089: Fix performance issue limiting the use of ConfigParser() - with large config files. +- Issue #11268: Prevent Mac OS X Installer failure if Documentation + package had previously been installed. -- Issue #8275: Fix passing of callback arguments with ctypes under Win64. - Patch by Stan Mihai. +Tools/Demos +----------- + +- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again. + +Tests +----- + +- Issue #11505: improves test coverage of string.py. Patch by Alicia + Arlen. + +- Issue #11548: Improve test coverage of the shutil module. Patch by + Evan Dandrea. + +- Issue #11554: Reactivated test_email_codecs. + +- Issue #11490: test_subprocess:test_leaking_fds_on_error no longer gives a + false positive if the last directory in the path is inaccessible. + +- Issue #11223: Fix test_threadsignals to fail, not hang, when the + non-semaphore implementation of locks is used under POSIX. + +- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by + Pierre Quentel. + +- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions. + Patch by Hirokazu Yamamoto. + +- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due + to open door files. + + +What's New in Python 3.2? +========================= + +*Release date: 20-Feb-2011* + +Core and Builtins +----------------- + +- Issue #11249: Fix potential crashes when using the limited API. + +Build +----- + +- Issue #11222: Fix non-framework shared library build on Mac OS X. + +- Issue #11184: Fix large-file support on AIX. + +- Issue #941346: Fix broken shared library build on AIX. + +Documentation +------------- + +- Issue #10709: Add updated AIX notes in Misc/README.AIX. + + +What's New in Python 3.2 Release Candidate 3? +============================================= + +*Release date: 13-Feb-2011* + +Core and Builtins +----------------- + +- Issue #11134: Add missing fields to typeslots.h. + +- Issue #11135: Remove redundant doc field from PyType_Spec. + +- Issue #11067: Add PyType_GetFlags, to support PyUnicode_Check in the limited + ABI. + +- Issue #11118: Fix bogus export of None in python3.dll. + +Library +------- + +- Issue #11116: any error during addition of a message to a mailbox now causes a + rollback, instead of leaving the mailbox partially modified. + +- Issue #11132: Fix passing of "optimize" parameter when recursing in + compileall.compile_dir(). + +- Issue #11110: Fix a potential decref of a NULL in sqlite3. + +- Issue #8275: Fix passing of callback arguments with ctypes under Win64. Patch + by Stan Mihai. + +Build +----- + +- Issue #11079: The /Applications/Python x.x folder created by the Mac OS X + installers now includes a link to the installed documentation and no longer + includes an Extras directory. The Tools directory is now installed in the + framework under share/doc. + +- Issue #11121: Fix building with --enable-shared. + +Tests +----- + +- Issue #10971: test_zipimport_support is once again compatible with the refleak + hunter feature of test.regrtest. + + +What's New in Python 3.2 Release Candidate 2? +============================================= + +*Release date: 30-Jan-2011* + +Core and Builtins +----------------- + +- Issue #10451: memoryview objects could allow to mutate a readable buffer. + Initial patch by Ross Lagerwall. + +Library +------- + +- Issue #9124: mailbox now accepts binary input and reads and writes mailbox + files in binary mode, using the email package's binary support to parse + arbitrary email messages. StringIO and text file input is deprecated, + and string input fails early if non-ASCII characters are used, where + previously it would fail when the email was processed in a later step. + +- Issue #10845: Mitigate the incompatibility between the multiprocessing + module on Windows and the use of package, zipfile or directory execution + by special casing main modules that actually *are* called __main__.py. + +- Issue #11045: Protect logging call against None argument. + +- Issue #11052: Correct IDLE menu accelerators on Mac OS X for Save + commands. - Issue #11053: Fix IDLE "Syntax Error" windows to behave as in 2.x, preventing a confusing hung appearance on OS X with the windows obscured. -- Issue #11052: Correct IDLE menu accelerators on Mac OS X for Save - commands. +- Issue #10940: Workaround an IDLE hang on Mac OS X 10.6 when using the + menu accelerators for Open Module, Go to Line, and New Indent Width. + The accelerators still work but no longer appear in the menu items. + +- Issue #10989: Fix a crash on SSLContext.load_verify_locations(None, True). - Issue #11020: Command-line pyclbr was broken because of missing 2-to-3 conversion. +- Issue #11019: Fixed BytesGenerator so that it correctly handles a Message + with a None body. + +- Issue #11014: Make 'filter' argument in tarfile.Tarfile.add() into a + keyword-only argument. The preceding positional argument was deprecated, + so it made no sense to add filter as a positional argument. + +- Issue #11004: Repaired edge case in deque.count(). + - Issue #10974: IDLE no longer crashes if its recent files list includes files with non-ASCII characters in their path names. +- Have hashlib.algorithms_available and hashlib.algorithms_guaranteed both + return sets instead of one returning a tuple and the other a frozenset. + - Issue #10987: Fix the recursion limit handling in the _pickle module. +- Issue #10983: Fix several bugs making tunnel requests in http.client. + +- Issue #10955: zipimport uses ASCII encoding instead of cp437 to decode + filenames, at bootstrap, if the codec registry is not ready yet. It is still + possible to have non-ASCII filenames using the Unicode flag (UTF-8 encoding) + for all file entries in the ZIP file. + - Issue #10949: Improved robustness of rotating file handlers. - Issue #10955: Fix a potential crash when trying to mmap() a file past its @@ -117,24 +297,130 @@ Library - Issue #10898: Allow compiling the posix module when the C library defines a symbol named FSTAT. -- Issue #10916: mmap should not segfault when a file is mapped using 0 as - length and a non-zero offset, and an attempt to read past the end of file - is made (IndexError is raised instead). Patch by Ross Lagerwall. +- Issue #10980: the HTTP server now encodes headers with iso-8859-1 (latin1) + encoding. This is the preferred encoding of PEP 3333 and the base encoding + of HTTP 1.1. + +- To match the behaviour of HTTP server, the HTTP client library now also + encodes headers with iso-8859-1 (latin1) encoding. It was already doing + that for incoming headers which makes this behaviour now consistent in + both incoming and outgoing direction. + +- Issue #9509: argparse now properly handles IOErrors raised by + argparse.FileType. + +- Issue #10961: The new pydoc server now better handles exceptions raised + during request handling. + +- Issue #10680: Fix mutually exclusive arguments for argument groups in + argparse. + +Build +----- + +- Issue #11054: Allow Mac OS X installer builds to again work on 10.5 with + the system-provided Python. + + +What's New in Python 3.2 Release Candidate 1 +============================================ + +*Release date: 16-Jan-2011* + +Core and Builtins +----------------- + +- Issue #10889: range indexing and slicing now works correctly on ranges with + a length that exceeds sys.maxsize. + +- Issue #10892: Don't segfault when trying to delete __abstractmethods__ from a + class. + +- Issue #8020: Avoid a crash where the small objects allocator would read + non-Python managed memory while it is being modified by another thread. Patch + by Matt Bandy. + +- Issue #10841: On Windows, set the binary mode on stdin, stdout, stderr and all + io.FileIO objects (to not translate newlines, \r\n <=> \n). The Python parser + translates newlines (\r\n => \n). + +- Remove buffer API from stable ABI for now, see #10181. -- Issue #10899: No function type annotations in the standard library. - Removed function type annotations from _pyio.py. +- Issue #8651: PyArg_Parse*() functions raise an OverflowError if the file + doesn't have PY_SSIZE_T_CLEAN define and the size doesn't fit in an int + (length bigger than 2^31-1 bytes). + +- Issue #9015, #9611: FileIO.readinto(), FileIO.write(), os.write() and + stdprinter.write() clamp the length to 2^31-1 on Windows. + +- Issue #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime() + can now handle dates after 2038. + +- Issue #10780: PyErr_SetFromWindowsErrWithFilename() and + PyErr_SetExcFromWindowsErrWithFilename() decode the filename from the + filesystem encoding instead of UTF-8. + +- Issue #10779: PyErr_WarnExplicit() decodes the filename from the filesystem + encoding instead of UTF-8. + +- Add sys.flags attribute for the new -q command-line option. + +Library +------- + +- Issue #10916: mmap should not segfault when a file is mapped using 0 as length + and a non-zero offset, and an attempt to read past the end of file is made + (IndexError is raised instead). Patch by Ross Lagerwall. + +- Issue #10907: Warn OS X 10.6 IDLE users to use ActiveState Tcl/Tk 8.5, rather + than the currently problematic Apple-supplied one, when running with the + 64-/32-bit installer variant. + +- Issue #4953: cgi.FieldStorage and cgi.parse() parse the request as bytes, not + as unicode, and accept binary files. Add encoding and errors attributes to + cgi.FieldStorage. Patch written by Pierre Quentel (with many inputs by Glenn + Linderman). + +- Add encoding and errors arguments to urllib.parse_qs() and urllib.parse_qsl(). + +- Issue #10899: No function type annotations in the standard library. Removed + function type annotations from _pyio.py. - Issue #10875: Update Regular Expression HOWTO; patch by 'SilentGhost'. -- Issue #10869: Fixed bug where ast.increment_lineno modified the root - node twice. +- Issue #10872: The repr() of TextIOWrapper objects now includes the mode + if available. + +- Issue #10869: Fixed bug where ast.increment_lineno modified the root node + twice. - Issue #5871: email.header.Header.encode now raises an error if any - continuation line in the formatted value has no leading white space - and looks like a header. Since Generator uses Header to format all - headers, this check is made for all headers in any serialized message - at serialization time. This provides protection against header - injection attacks. + continuation line in the formatted value has no leading white space and looks + like a header. Since Generator uses Header to format all headers, this check + is made for all headers in any serialized message at serialization time. This + provides protection against header injection attacks. + +- Issue #10859: Make ``contextlib.GeneratorContextManager`` officially + private by renaming it to ``_GeneratorContextManager``. + +- Issue #10042: Fixed the total_ordering decorator to handle cross-type + comparisons that could lead to infinite recursion. + +- Issue #10686: the email package now :rfc:`2047`\ -encodes headers with + non-ASCII bytes (parsed by a Bytes Parser) when doing conversion to 7bit-clean + presentation, instead of replacing them with ?s. + +- email.header.Header was incorrectly encoding folding white space when + rfc2047-encoding header values with embedded newlines, leaving them without + folding whitespace. It now uses the continuation_ws, as it does for + continuation lines that it creates itself. + +- Issue #1777412, #10827: Changed the rules for 2-digit years. The + time.asctime(), time.ctime() and time.strftime() functions will now format + any year when ``time.accept2dyear`` is False and will accept years >= 1000 + otherwise. ``time.mktime`` and ``time.strftime`` now accept full range + supported by the OS. With Visual Studio or on Solaris, the year is limited to + the range [1; 9999]. Conversion of 2-digit years to 4-digit is deprecated. - Issue #7858: Raise an error properly when os.utime() fails under Windows on an existing file. @@ -142,43 +428,222 @@ Library - Issue #3839: wsgiref should not override a Content-Length header set by the application. Initial patch by Clovis Fabricio. +- Issue #10492: bdb.Bdb.run() only traces the execution of the code, not the + compilation (if the input is a string). + +- Issue #7995: When calling accept() on a socket with a timeout, the returned + socket is now always blocking, regardless of the operating system. + +- Issue #10756: atexit normalizes the exception before displaying it. Patch by + Andreas Stührk. + - Issue #10790: email.header.Header.append's charset logic now works correctly for charsets whose output codec is different from its input codec. -- Issue #6643: Reinitialize locks held within the threading module after fork - to avoid a potential rare deadlock or crash on some platforms. +- Issue #10819: SocketIO.name property returns -1 when its closed, instead of + raising a ValueError, to fix repr(). + +- Issue #8650: zlib.compress() and zlib.decompress() raise an OverflowError if + the input buffer length doesn't fit into an unsigned int (length bigger than + 2^32-1 bytes). + +- Issue #6643: Reinitialize locks held within the threading module after fork to + avoid a potential rare deadlock or crash on some platforms. + +- Issue #10806, issue #9905: Fix subprocess pipes when some of the standard file + descriptors (0, 1, 2) are closed in the parent process. Initial patch by Ross + Lagerwall. + +- `unittest.TestCase` can be instantiated without a method name; for simpler + exploration from the interactive interpreter. + +- Issue #10798: Reject supporting concurrent.futures if the system has too + few POSIX semaphores. + +- Issue #10807: Remove base64, bz2, hex, quopri, rot13, uu and zlib codecs from + the codec aliases. They are still accessible via codecs.lookup(). + +- Issue #10801: In zipfile, support different encodings for the header and the + filenames. + +- Issue #6285: IDLE no longer crashes on missing help file; patch by Scott + David Daniels. -- Issue #10806, issue #9905: Fix subprocess pipes when some of the standard - file descriptors (0, 1, 2) are closed in the parent process. Initial - patch by Ross Lagerwall. +- Fix collections.OrderedDict.setdefault() so that it works in subclasses that + define __missing__(). -- Issue 10753 - Characters ';','=' and ',' in the PATH_INFO environment - variable won't be quoted when the URI is constructed by the wsgiref.util 's - request_uri method. According to RFC 3986, these characters can be a part of - params in PATH component of URI and need not be quoted. +- Issue #10786: unittest.TextTestRunner default stream no longer bound at import + time. `sys.stderr` now looked up at instantiation time. Fix contributed by + Mark Roddy. -- Issue 10738: Fix webbrowser.Opera.raise_opts +- Issue #10753: Characters ';','=' and ',' in the PATH_INFO environment variable + won't be quoted when the URI is constructed by the wsgiref.util 's request_uri + method. According to RFC 3986, these characters can be a part of params in + PATH component of URI and need not be quoted. -- Issue 9824: SimpleCookie now encodes , and ; in values to cater to how +- Issue #10738: Fix webbrowser.Opera.raise_opts. + +- Issue #9824: SimpleCookie now encodes , and ; in values to cater to how browsers actually parse cookies. +- Issue #9333: os.symlink now available regardless of user privileges. The + function now raises OSError on Windows >=6.0 when the user is unable to create + symbolic links. XP and 2003 still raise NotImplementedError. + +- Issue #10783: struct.pack() no longer implicitly encodes unicode to UTF-8. + +- Issue #10730: Add SVG mime types to mimetypes module. + +- Issue #10768: Make the Tkinter ScrolledText widget work again. + +- Issue #10777: Fix "dictionary changed size during iteration" bug in + ElementTree register_namespace(). + +- Issue #10626: test_logging now preserves logger disabled states. + +- Issue #10774: test_logging now removes temp files created during tests. + - Issue #5258/#10642: if site.py encounters a .pth file that generates an error, it now prints the filename, line number, and traceback to stderr and skips the rest of that individual file, instead of stopping processing entirely. +- Issue #10763: subprocess.communicate() closes stdout and stderr if both are + pipes (bug specific to Windows). + +- Issue #1693546: fix email.message RFC 2231 parameter encoding to be in better + compliance (no "s around encoded values). + +- Improved the diff message in the unittest module's assertCountEqual(). + +- Issue #1155362: email.utils.parsedate_tz now handles a missing space before + the '-' of a timezone field as well as before a '+'. + - Issue #4871: The zipfile module now gives a more useful error message if an attempt is made to use a string to specify the archive password. - Issue #10750: The ``raw`` attribute of buffered IO objects is now read-only. +- Deprecated assertDictContainsSubset() in the unittest module. + +C-API +----- + +- Issue #10913: Deprecate misleading functions PyEval_AcquireLock() and + PyEval_ReleaseLock(). The thread-state aware APIs should be used instead. + +- Issue #10333: Remove ancient GC API, which has been deprecated since Python + 2.2. + +Build +----- + +- Issue #10843: Update third-party library versions used in OS X 32-bit + installer builds: bzip2 1.0.6, readline 6.1.2, SQLite 3.7.4 (with FTS3/FTS4 + and RTREE enabled), and ncursesw 5.5 (wide-char support enabled). + +- Issue #10820: Fix OS X framework installs to support version-specific + scripts (#10679). + +- Issue #7716: Under Solaris, don't assume existence of /usr/xpg4/bin/grep in + the configure script but use $GREP instead. Patch by Fabian Groffen. + +- Issue #10475: Don't hardcode compilers for LDSHARED/LDCXXSHARED on NetBSD + and DragonFly BSD. Patch by Nicolas Joly. + +- Issue #10679: The "idle", "pydoc" and "2to3" scripts are now installed with + a version-specific suffix on "make altinstall". + +- Issue #10655: Fix the build on PowerPC on Linux with GCC when building with + timestamp profiling (--with-tsc): the preprocessor test for the PowerPC + support now looks for "__powerpc__" as well as "__ppc__": the latter seems to + only be present on OS X; the former is the correct one for Linux with GCC. + +- Issue #1099: Fix the build on MacOSX when building a framework with pydebug + using GCC 4.0. + +Tools/Demos +----------- + +- Issue #10843: Install the Tools directory on OS X in the applications Extras + (/Applications/Python 3.n/Extras/) where the Demo directory had previous been + installed. + +- Issue #7962: The Demo directory is gone. Most of the old and unmaintained + demos have been removed, others integrated in documentation or a new + Tools/demo subdirectory. + +- Issue #10502: Addition of the unittestgui tool. Originally by Steve Purcell. + Updated for test discovery by Mark Roddy and Python 3 compatibility by Brian + Curtin. + +Tests +----- + +- Issue #10822: Fix test_posix:test_getgroups failure under Solaris. Patch + by Ross Lagerwall. + +- Make the --coverage flag work for test.regrtest. + +- Issue #1677694: Refactor and improve test_timeout. Original patch by + Björn Lindqvist. + +- Issue #5485: Add tests for the UseForeignDTD method of expat parser objects. + Patch by Jean-Paul Calderone and Sandro Tosi. + +- Issue #6293: Have regrtest.py echo back sys.flags. This is done by default in + whole runs and enabled selectively using ``--header`` when running an explicit + list of tests. Original patch by Collin Winter. + + +What's New in Python 3.2 Beta 2? +================================ + +*Release date: 19-Dec-2010* + +Core and Builtins +----------------- + +- Issue #8844: Regular and recursive lock acquisitions can now be interrupted + by signals on platforms using pthreads. Patch by Reid Kleckner. + +- Issue #4236: PyModule_Create2 now checks the import machinery directly + rather than the Py_IsInitialized flag, avoiding a Fatal Python + error in certain circumstances when an import is done in __del__. + +- Issue #5587: add a repr to dict_proxy objects. Patch by David Stanek and + Daniel Urban. + +Library +------- + +- Issue #3243: Support iterable bodies in httplib. Patch Contributions by + Xuanji Li and Chris AtLee. + +- Issue #10611: SystemExit exception will no longer kill a unittest run. + +- Issue #9857: It is now possible to skip a test in a setUp, tearDown or clean + up function. + +- Issue #10573: use actual/expected consistently in unittest methods. + The order of the args of assertCountEqual is also changed. + +- Issue #9286: email.utils.parseaddr no longer concatenates blank-separated + words in the local part of email addresses, thereby preserving the input. + - Issue #6791: Limit header line length (to 65535 bytes) in http.client and http.server, to avoid denial of services from the other party. - Issue #10404: Use ctl-button-1 on OSX for the context menu in Idle. +- Issue #9907: Fix tab handling on OSX when using editline by calling + rl_initialize first, then setting our custom defaults, then reading .editrc. + - Issue #4188: Avoid creating dummy thread objects when logging operations from the threading module (with the internal verbose flag activated). +- Issue #10711: Remove HTTP 0.9 support from http.client. The ``strict`` + parameter to HTTPConnection and friends is deprecated. + - Issue #9721: Fix the behavior of urljoin when the relative url starts with a ';' character. Patch by Wes Chow. @@ -187,118 +652,240 @@ Library - Issue #9558: Fix distutils.command.build_ext with VS 8.0. +- Issue #10667: Fast path for collections.Counter(). + - Issue #10695: passing the port as a string value to telnetlib no longer causes debug mode to fail. - Issue #1078919: add_header now automatically RFC2231 encodes parameters that contain non-ascii values. +- Issue #10188 (partial resolution): tempfile.TemporaryDirectory emits + a warning on sys.stderr rather than throwing a misleading exception + if cleanup fails due to nulling out of modules during shutdown. + Also avoids an AttributeError when mkdtemp call fails and issues + a ResourceWarning on implicit cleanup via __del__. + - Issue #10107: Warn about unsaved files in IDLE on OSX. -- Issue #7904: Changes to urllib.parse.urlsplit to handle schemes as defined by - RFC3986. Anything before :// is considered a scheme and is followed by an - authority (or netloc) and by '/' led path, which is optional. +- Issue #7213: subprocess.Popen's default for close_fds has been changed. + It is now True in most cases other than on Windows when input, output or + error handles are provided. -- Issue #10478: Reentrant calls inside buffered IO objects (for example by - way of a signal handler) now raise a RuntimeError instead of freezing the - current process. - -- Issue #10464: netrc now correctly handles lines with embedded '#' characters. +- Issue #6559: subprocess.Popen has a new pass_fds parameter (actually + added in 3.2beta1) to allow specifying a specific list of file descriptors + to keep open in the child process. - Issue #1731717: Fixed the problem where subprocess.wait() could cause an OSError exception when The OS had been told to ignore SIGCLD in our process or otherwise not wait for exiting child processes. -- Issue #11500: Fixed a bug in the os x proxy bypass code for fully qualified - IP addresses in the proxy exception list. +Tests +----- + +- Issue #775964: test_grp now skips YP/NIS entries instead of failing when + encountering them. + +Tools/Demos +----------- + +- Issue #6075: IDLE on Mac OS X now works with both Carbon AquaTk and + Cocoa AquaTk. -Extensions ----------- +- Issue #10710: ``Misc/setuid-prog.c`` is removed from the source tree. -- Issue #678250: Make mmap flush a noop on ACCESS_READ and ACCESS_COPY. +- Issue #10706: Remove outdated script runtests.sh. Either ``make test`` + or ``python -m test`` should be used instead. Build ----- -- Issue #11411: Fix 'make DESTDIR=' with a relative destination. +- The Windows build now uses Tcl/Tk 8.5.9 and sqlite3 3.7.4. -- Issue #11184: Fix large-file support on AIX. +- Issue #9234: argparse supports alias names for subparsers. -- Issue #941346: Fix broken shared library build on AIX. -- Issue #7716: Under Solaris, don't assume existence of /usr/xpg4/bin/grep in - the configure script but use $GREP instead. Patch by Fabian Groffen. +What's New in Python 3.2 Beta 1? +================================ -- Issue #10475: Don't hardcode compilers for LDSHARED/LDCXXSHARED on NetBSD - and DragonFly BSD. Patch by Nicolas Joly. +*Release date: 05-Dec-2010* -- Issue #10655: Fix the build on PowerPC on Linux with GCC when building with - timestamp profiling (--with-tsc): the preprocessor test for the PowerPC - support now looks for "__powerpc__" as well as "__ppc__": the latter seems to - only be present on OS X; the former is the correct one for Linux with GCC. +Core and Builtins +----------------- -- Issue #1099: Fix the build on MacOSX when building a framework with pydebug - using GCC 4.0. +- Issue #10630: Return dict views from the dict proxy keys()/values()/items() + methods. -Tests ------ +- Issue #10596: Fix float.__mod__ to have the same behaviour as float.__divmod__ + with respect to signed zeros. -4.0 % 4.0 should be 0.0, not -0.0. -- Issue #11490: test_subprocess:test_leaking_fds_on_error no longer gives a - false positive if the last directory in the path is inaccessible. +- Issue #1772833: Add the -q command-line option to suppress copyright and + version output in interactive mode. -- Issue #10822: Fix test_posix:test_getgroups failure under Solaris. Patch - by Ross Lagerwall. +- Provide an *optimize* parameter in the built-in compile() function. -- Issue #6293: Have regrtest.py echo back sys.flags. This is done by default - in whole runs and enabled selectively using ``--header`` when running an - explicit list of tests. Original patch by Collin Winter. +- Fixed several corner case issues on Windows in os.stat/os.lstat related to + reparse points. -- Issue #775964: test_grp now skips YP/NIS entries instead of failing when - encountering them. +- PEP 384 (Defining a Stable ABI) is implemented. -- Issue #7110: regrtest now sends test failure reports and single-failure - tracebacks to stderr rather than stdout. +- Issue #2690: Range objects support negative indices and slicing. +- Issue #9915: Speed up sorting with a key. -What's New in Python 3.1.3? -=========================== +- Issue #8685: Speed up set difference ``a - b`` when source set ``a`` is much + larger than operand ``b``. Patch by Andrew Bennetts. -*Release date: 2010-11-27* +- Issue #10518: Bring back the callable() builtin. -Core and Builtins ------------------ +- Issue #7094: Added alternate formatting (specified by '#') to ``__format__`` + method of float, complex, and Decimal. This allows more precise control over + when decimal points are displayed. -- Issue #10391: Don't dereference invalid memory in error messages in the ast - module. +- Issue #10474: range.count() should return integers. + +- Issue #1574217: isinstance now catches only AttributeError, rather than + masking all errors. Library ------- -- Issue #2236: distutils' mkpath ignored the mode parameter. +- logging: added "handler of last resort". See http://bit.ly/last-resort-handler -- Fix typo in one sdist option (medata-check). +- test.support: Added TestHandler and Matcher classes for better support of + assertions about logging. -- Issue #10323: itertools.islice() now consumes the minimum number of - inputs before stopping. Formerly, the final state of the underlying - iterator was undefined. +- Issue #4391: Use proper plural forms in argparse. -- Issue #10565: The collections.Iterator ABC now checks for both - __iter__ and __next__. +- Issue #10601: sys.displayhook uses 'backslashreplace' error handler on + UnicodeEncodeError. -- Issue #10561: In pdb, clear the breakpoints by the breakpoint number. +- Add the "display" and "undisplay" pdb commands. -- Issue #10459: Update CJK character names to Unicode 5.1. +- Issue #7245: Add a SIGINT handler in pdb that allows to break a program again + after a "continue" command. -- Issue #10092: Properly reset locale in calendar.Locale*Calendar classes. +- Add the "interact" pdb command. -- Issue #6098: Don't claim DOM level 3 conformance in minidom. +- Issue #7905: Actually respect the keyencoding parameter to shelve.Shelf. -- Issue #5762: Fix AttributeError raised by ``xml.dom.minidom`` when an empty - XML namespace attribute is encountered. +- Issue #1569291: Speed up array.repeat(). -- Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is - created in modes 'a' or 'w' and then closed without adding any files. Raise - BadZipfile (rather than IOError) when opening small non-ZIP files. +- Provide an interface to set the optimization level of compilation in + py_compile, compileall and zipfile.PyZipFile. + +- Issue #7904: Changes to urllib.parse.urlsplit to handle schemes as defined by + RFC3986. Anything before :// is considered a scheme and is followed by an + authority (or netloc) and by '/' led path, which is optional. + +- Issue #6045: dbm.gnu databases now support get() and setdefault() methods. + +- Issue #10620: `python -m unittest` can accept file paths instead of module + names for running specific tests. + +- Issue #9424: Deprecate the `unittest.TestCase` methods `assertEquals`, + `assertNotEquals`, `assertAlmostEquals`, `assertNotAlmostEquals` and `assert_` + and replace them with the correct methods in the Python test suite. + +- Issue #10272: The ssl module now raises socket.timeout instead of a generic + SSLError on socket timeouts. + +- Issue #10528: Allow translators to reorder placeholders in localizable + messages from argparse. + +- Issue #10497: Fix incorrect use of gettext in argparse. + +- Issue #10478: Reentrant calls inside buffered IO objects (for example by + way of a signal handler) now raise a RuntimeError instead of freezing the + current process. + +- logging: Added getLogRecordFactory/setLogRecordFactory with docs and tests. + +- Issue #10549: Fix pydoc traceback when text-documenting certain classes. + +- Issue #2001: New HTML server with enhanced Web page features. Patch by Ron + Adam. + +- Issue #10360: In WeakSet, do not raise TypeErrors when testing for membership + of non-weakrefable objects. + +- Issue #940286: pydoc.Helper.help() ignores input/output init parameters. + +- Issue #1745035: Add a command size and data size limit to smtpd.py, to prevent + DoS attacks. Patch by Savio Sena. + +- Issue #4925: Add filename to error message when executable can't be found in + subprocess. + +- Issue #10391: Don't dereference invalid memory in error messages in the ast + module. + +- Issue #10027: st_nlink was not being set on Windows calls to os.stat or + os.lstat. Patch by Hirokazu Yamamoto. + +- Issue #9333: Expose os.symlink only when the SeCreateSymbolicLinkPrivilege is + held by the user's account, i.e., when the function can actually be used. + +- Issue #8879: Add os.link support for Windows. + +- Issue #7911: ``unittest.TestCase.longMessage`` defaults to True for improved + failure messages by default. Patch by Mark Roddy. + +- Issue #1486713: HTMLParser now has an optional tolerant mode where it tries to + guess at the correct parsing of invalid html. + +- Issue #10554: Add context manager support to subprocess.Popen objects. + +- Issue #8989: email.utils.make_msgid now has a domain parameter that can + override the domain name used in the generated msgid. + +- Issue #9299: Add exist_ok parameter to os.makedirs to suppress the 'File + exists' exception when a target directory already exists with the specified + mode. Patch by Ray Allen. + +- Issue #9573: os.fork() now works correctly when triggered as a side effect of + a module import. + +- Issue #10464: netrc now correctly handles lines with embedded '#' characters. + +- Added itertools.accumulate(). + +- Issue #4113: Added custom ``__repr__`` method to ``functools.partial``. + Original patch by Daniel Urban. + +- Issue #10273: Rename `assertRegexpMatches` and `assertRaisesRegexp` to + `assertRegex` and `assertRaisesRegex`. + +- Issue #10535: Enable silenced warnings in unittest by default. + +- Issue #9873: The URL parsing functions in urllib.parse now accept ASCII byte + sequences as input in addition to character strings. + +- Issue #10586: The statistics API for the new functools.lru_cache has been + changed to a single cache_info() method returning a named tuple. + +- Issue #10323: itertools.islice() now consumes the minimum number of inputs + before stopping. Formerly, the final state of the underlying iterator was + undefined. + +- Issue #10565: The collections.Iterator ABC now checks for both __iter__ and + __next__. + +- Issue #10242: Fixed implementation of unittest.ItemsEqual and gave it a new + more informative name, unittest.CountEqual. + +- Issue #10561: In pdb, clear the breakpoints by the breakpoint number. + +- Issue #2986: difflib.SequenceMatcher gets a new parameter, autojunk, which can + be set to False to turn off the previously undocumented 'popularity' + heuristic. Patch by Terry Reedy and Eli Bendersky. + +- Issue #10534: in difflib, expose bjunk and bpopular sets; deprecate + undocumented and now redundant isbjunk and isbpopular methods. + +- Issue #9846: zipfile is now correctly closing underlying file objects. + +- Issue #10459: Update CJK character names to Unicode 6.0. - Issue #4493: urllib.request adds '/' in front of path components which does not start with '/. Common behavior exhibited by browsers and other clients. @@ -306,33 +893,122 @@ Library - Issue #6378: idle.bat now runs with the appropriate Python version rather than the system default. Patch by Sridhar Ratnakumar. +- Issue #10470: 'python -m unittest' will now run test discovery by default, + when no extra arguments have been provided. + +- Issue #3709: BaseHTTPRequestHandler will buffer the headers and write to + output stream only when end_headers is invoked. This is a speedup and an + internal optimization. Patch by endian. + +- Issue #10220: Added inspect.getgeneratorstate. Initial patch by Rodolpho + Eckhardt. + +- Issue #10453: compileall now uses argparse instead of getopt, and thus + provides clean output when called with '-h'. + +- Issue #8078: Add constants for higher baud rates in the termios module. Patch + by Rodolpho Eckhardt. + - Issue #10407: Fix two NameErrors in distutils. -- Issue #10198: fix duplicate header written to wave files when writeframes() - is called without data. +- Issue #10371: Deprecated undocumented functions in the trace module. - Issue #10467: Fix BytesIO.readinto() after seeking into a position after the end of the file. +- configparser: 100% test coverage. + +- Issue #10499: configparser supports pluggable interpolation handlers. The + default classic interpolation handler is called BasicInterpolation. Another + interpolation handler added (ExtendedInterpolation) which supports the syntax + used by zc.buildout (e.g. interpolation between sections). + +- configparser: the SafeConfigParser class has been renamed to ConfigParser. + The legacy ConfigParser class has been removed but its interpolation mechanism + is still available as LegacyInterpolation. + +- configparser: Usage of RawConfigParser is now discouraged for new projects + in favor of ConfigParser(interpolation=None). + - Issue #1682942: configparser supports alternative option/value delimiters. -Build +- Issue #5412: configparser supports mapping protocol access. + +- Issue #9411: configparser supports specifying encoding for read operations. + +- Issue #9421: configparser's getint(), getfloat() and getboolean() methods + accept vars and default arguments just like get() does. + +- Issue #9452: configparser supports reading from strings and dictionaries + (thanks to the mapping protocol API, the latter can be used to copy data + between parsers). + +- configparser: accepted INI file structure is now customizable, including + comment prefixes, name of the DEFAULT section, empty lines in multiline + values, and indentation. + +- Issue 10326: unittest.TestCase instances can be pickled. + +- Issue 9926: Wrapped TestSuite subclass does not get __call__ executed. + +- Issue #9920: Skip tests for cmath.atan and cmath.atanh applied to complex + zeros on systems where the log1p function fails to respect the sign of zero. + This fixes a test failure on AIX. + +- Issue #9732: Addition of getattr_static to the inspect module. + +- Issue #10446: Module documentation generated by pydoc now links to a + version-specific online reference manual. + +- Make the 'No module named' exception message from importlib consistent. + +- Issue #10443: Add the SSLContext.set_default_verify_paths() method. + +- Issue #10440: Support RUSAGE_THREAD as a constant in the resource module. + Patch by Robert Collins. + +- Issue #10429: IMAP.starttls() stored the capabilities as bytes objects, rather + than strings. + +C-API ----- -- Don't run pgen twice when using make -j. +- Issue #10557: Added a new API function, PyUnicode_TransformDecimalToASCII(), + which transforms non-ASCII decimal digits in a Unicode string to their ASCII + equivalents. -- Backport r83399 to allow test_distutils to pass on installed versions. +- Issue #9518: Extend the PyModuleDef_HEAD_INIT macro to explicitly + zero-initialize all fields, fixing compiler warnings seen when building + extension modules with gcc with "-Wmissing-field-initializers" (implied by + "-W"). -- Issue #1303434: Generate ZIP file containing all PDBs (already done for rc1). +- Issue #10255: Fix reference leak in Py_InitializeEx(). Patch by Neil + Schemenauer. -- Stop packaging versioncheck tool (already done for rc1). +- structseq.h is now included in Python.h. -- Accept Oracle Berkeley DB 4.8, 5.0 and 5.1 as backend for the dbm extension. +- Loosen PyArg_ValidateKeywordArguments to allow dict subclasses. Tests ----- -- Issue #9424: Replace deprecated assert* methods in the Python test suite. +- regrtest.py once again ensures the test directory is removed from sys.path + when it is invoked directly as the __main__ module. + +- `python -m test` can be used to run the test suite as well as `python -m + test.regrtest`. + +- Do not fail test_socket when the IP address of the local hostname cannot be + looked up. + +- Issue #8886: Use context managers throughout test_zipfile. Patch by Eric + Carstensen. + +Build +----- + +- Issue #10325: Fix two issues in the fallback definitions for PY_ULLONG_MAX and + PY_LLONG_MAX that made them unsuitable for use in preprocessor conditionals. Documentation ------------- @@ -340,874 +1016,1448 @@ Documentation - Issue #10299: List the built-in functions in a table in functions.rst. -What's New in Python 3.1.3 release candidate 1? -=============================================== +What's New in Python 3.2 Alpha 4? +================================= -*Release date: 2010-11-13* +*Release date: 13-Nov-2010* Core and Builtins ----------------- +- Issue #10372: Import the warnings module only after the IO library is + initialized, so as to avoid bootstrap issues with the '-W' option. + +- Issue #10293: Remove obsolete field in the PyMemoryView structure, unused + undocumented value PyBUF_SHADOW, and strangely-looking code in + PyMemoryView_GetContiguous. + +- Issue #6081: Add str.format_map(), similar to ``str.format(**mapping)``. + +- If FileIO.__init__ fails, close the file descriptor. + - Issue #10221: dict.pop(k) now has a key error message that includes the missing key (same message d[k] returns for missing keys). -- Issue #5437: A preallocated MemoryError instance should not hold traceback +- Issue #5437: A preallocated MemoryError instance should not keep traceback data (including local variables caught in the stack trace) alive infinitely. -- Issue #10077: Fix logging of site module errors at startup. - - Issue #10186: Fix the SyntaxError caret when the offset is equal to the length of the offending line. -- Issue #9713, #10114: Parser functions (eg. PyParser_ASTFromFile) expects - filenames encoded to the filesystem encoding with surrogateescape error - handler (to support undecodable bytes), instead of UTF-8 in strict mode. +- Issue #10089: Add support for arbitrary -X options on the command line. They + can be retrieved through a new attribute ``sys._xoptions``. -- Issue #10006: type.__abstractmethods__ now raises an AttributeError. As a - result metaclasses can now be ABCs (see #9533). +- Issue #4388: On Mac OS X, decode command line arguments from UTF-8, instead of + the locale encoding. If the LANG (and LC_ALL and LC_CTYPE) environment + variable is not set, the locale encoding is ISO-8859-1, whereas most programs + (including Python) expect UTF-8. Python already uses UTF-8 for the filesystem + encoding and to encode command line arguments on this OS. + +- Issue #9713, #10114: Parser functions (e.g. PyParser_ASTFromFile) expect + filenames encoded to the filesystem encoding with the surrogateescape error + handler (to support undecodable bytes), instead of UTF-8 in strict mode. - Issue #9997: Don't let the name "top" have special significance in scope resolution. -- Issue #9930: Remove bogus subtype check that was causing (e.g.) - float.__rdiv__(2.0, 3) to return NotImplemented instead of the - expected 1.5. +- Issue #9862: Compensate for broken PIPE_BUF in AIX by hard coding its value as + the default 512 when compiling on AIX. -- Issue #9804: ascii() now always represents unicode surrogate pairs as - a single ``\UXXXXXXXX``, regardless of whether the character is printable - or not. Also, the "backslashreplace" error handler now joins surrogate - pairs into a single character on UCS-2 builds. +- Use locale encoding instead of UTF-8 to encode and decode filenames if + Py_FileSystemDefaultEncoding is not set. -- Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid - thread-local storage key. +- Issue #10095: fp_setreadl() doesn't reopen the file, instead reuse the file + descriptor. -- Issue #9737: Fix a crash when trying to delete a slice or an item from - a memoryview object. +- Issue #9418: Moved private string methods ``_formatter_parser`` and + ``_formatter_field_name_split`` into a new ``_string`` module. -- Issue #7415: PyUnicode_FromEncodedObject() now uses the new buffer API - properly. Patch by Stefan Behnel. +- Issue #9992: Remove PYTHONFSENCODING environment variable. -- Restore GIL in nis_cat in case of error. +Library +------- -- Issue #9712: Fix tokenize on identifiers that start with non-ascii names. +- Issue #10465: fix broken delegating of attributes by gzip._PaddedFile. -- Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t. +- Issue #10356: Decimal.__hash__(-1) should return -2. -- Issue #5319: Print an error if flushing stdout fails at interpreter - shutdown. +- Issue #1553375: logging: Added stack_info kwarg to display stack information. -- Issue #8814: function annotations (the ``__annotations__`` attribute) - are now included in the set of attributes copied by default by - functools.wraps and functools.update_wrapper. Patch by Terrence Cole. +- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru. -- Issue #83755: Implicit set-to-frozenset conversion was not thread-safe. +- Fix Fraction.__hash__ so that Fraction.__hash__(-1) is -2. (See also issue + #10356.) -- Issue #10068: Global objects which have reference cycles with their module's - dict are now cleared again. This causes issue #7140 to appear again. +- Issue #4471: Add the IMAP.starttls() method to enable encryption on standard + IMAP4 connections. Original patch by Lorenzo M. Catucci. -- Issue #9416: Fix some issues with complex formatting where the - output with no type specifier failed to match the str output: +- Issue #1466065: Add 'validate' option to base64.b64decode to raise an error if + there are non-base64 alphabet characters in the input. - - format(complex(-0.0, 2.0), '-') omitted the real part from the output, - - format(complex(0.0, 2.0), '-') included a sign and parentheses. +- Issue #10386: Add __all__ to token module; this simplifies importing in + tokenize module and prevents leaking of private names through ``import *``. -- Issue #7616: Fix copying of overlapping memoryview slices with the Intel - compiler. +- Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by Lorenzo + M. Catucci. -- Issue #8271: during the decoding of an invalid UTF-8 byte sequence, only the - start byte and the continuation byte(s) are now considered invalid, instead - of the number of bytes specified by the start byte. - E.g.: '\xf1\x80AB'.decode('utf-8', 'replace') now returns u'\ufffdAB' and - replaces with U+FFFD only the start byte ('\xf1') and the continuation byte - ('\x80') even if '\xf1' is the start byte of a 4-bytes sequence. - Previous versions returned a single u'\ufffd'. +- Fix IMAP.login() to work properly. -- Issue #6543: Write the traceback in the terminal encoding instead of utf-8. - Fix the encoding of the modules filename. Patch written by Amaury Forgeot - d'Arc. +- Issue #9244: multiprocessing pool worker processes could terminate + unexpectedly if the return value of a task could not be pickled. Only the + ``repr`` of such errors are now sent back, wrapped in an + ``MaybeEncodingError`` exception. -- Issue #9058: Remove assertions about INT_MAX in UnicodeDecodeError. +- Issue #9244: The ``apply_async()`` and ``map_async()`` methods of + ``multiprocessing.Pool`` now accepts a ``error_callback`` argument. This can + be a callback with the signature ``callback(exc)``, which will be called if + the target raises an exception. -- Issue #8941: decoding big endian UTF-32 data in UCS-2 builds could crash - the interpreter with characters outside the Basic Multilingual Plane - (higher than 0x10000). +- Issue #10022: The dictionary returned by the ``getpeercert()`` method of SSL + sockets now has additional items such as ``issuer`` and ``notBefore``. -- In the str.format(), raise a ValueError when indexes to arguments are too - large. +- ``usenetrc`` is now false by default for NNTP objects. -- Issue #8766: Initialize _warnings module before importing the first module. - Fix a crash if an empty directory called "encodings" exists in sys.path. +- Issue #1926: Add support for NNTP over SSL on port 563, as well as STARTTLS. + Patch by Andrew Vant. -- PyObject_Dump() encodes unicode objects to utf8 with backslashreplace - (instead of strict) error handler to escape surrogates +- Issue #10335: Add tokenize.open(), detect the file encoding using + tokenize.detect_encoding() and open it in read only mode. -- Issue #8124: PySys_WriteStdout() and PySys_WriteStderr() don't execute - indirectly Python signal handlers anymore because mywrite() ignores - exceptions (KeyboardInterrupt) +- Issue #10321: Add support for binary data to smtplib.SMTP.sendmail, and a new + method send_message to send an email.message.Message object. -- Issue #8092: Fix PyUnicode_EncodeUTF8() to support error handler producing - unicode string (eg. backslashreplace) +- Issue #6011: sysconfig and distutils.sysconfig use the surrogateescape error + handler to parse the Makefile file. Avoid a UnicodeDecodeError if the source + code directory name contains a non-ASCII character and the locale encoding is + ASCII. -- Issue #8014: Setting a T_UINT or T_PYSSIZET attribute of an object with - PyMemberDefs could produce an internal error; raise TypeError instead. +- Issue #10329: The trace module writes reports using the input Python script + encoding, instead of the locale encoding. Patch written by Alexander + Belopolsky. -- Issue #8417: Raise an OverflowError when an integer larger than sys.maxsize is - passed to bytes or bytearray. +- Issue #10126: Fix distutils' test_build when Python was built with + --enable-shared. -- Issue #8329: Don't return the same lists from select.select when no fds are - changed. +- Issue #9281: Prevent race condition with mkdir in distutils. Patch by + Arfrever. -- Raise a TypeError when trying to delete a T_STRING_INPLACE struct member. +- Issue #10229: Fix caching error in gettext. -- Issue #8226: sys.setfilesystemencoding() raises a LookupError if the encoding - is unknown +- Issue #10252: Close file objects in a timely manner in distutils code and + tests. Patch by Brian Brazil, completed by Éric Araujo. -- Issue #1583863: An str subclass can now override the __str__ method +- Issue #10180: Pickling file objects is now explicitly forbidden, since + unpickling them produced nonsensical results. -- Issue #7072: isspace(0xa0) is true on Mac OS X +- Issue #10311: The signal module now restores errno before returning from its + low-level signal handler. Patch by Hallvard B Furuseth. -C-API ------ +- Issue #10282: Add a ``nntp_implementation`` attribute to NNTP objects. -- Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or - PySequence_DelSlice when the object doesn't have any mapping operations - defined. +- Issue #10283: Add a ``group_pattern`` argument to NNTP.list(). -- Issue #5753: A new C API function, :cfunc:`PySys_SetArgvEx`, allows - embedders of the interpreter to set sys.argv without also modifying - sys.path. This helps fix `CVE-2008-5983 - <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5983>`_. +- Issue #10155: Add IISCGIHandler to wsgiref.handlers to support IIS CGI + environment better, and to correct unicode environment values for WSGI 1.0.1. -Library -------- +- Issue #10281: nntplib now returns None for absent fields in the OVER/XOVER + response, instead of raising an exception. -- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru. +- wsgiref now implements and validates PEP 3333, rather than an experimental + extension of PEP 333. (Note: earlier versions of Python 3.x may have + incorrectly validated some non-compliant applications as WSGI compliant; if + your app validates with Python <3.2b1+, but not on this version, it is likely + the case that your app was not compliant.) -- Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by - Lorenzo M. Catucci. +- Issue #10280: NNTP.nntp_version should reflect the highest version advertised + by the server. -- Fix IMAP.login() to work properly. - -- Issue #10126: Fix distutils' test_build when Python was built with - --enable-shared. - -- Fix typo in one sdist option (medata-check). +- Issue #10184: Touch directories only once when extracting a tarfile. -- Issue #9199: Fix incorrect use of distutils.cmd.Command.announce. +- Issue #10199: New package, ``turtledemo`` now contains selected demo scripts + that were formerly found under Demo/turtle. -- Issue #1718574: Fix options that were supposed to accept arguments but did - not in build_clib. +- Issue #10265: Close file objects explicitly in sunau. Patch by Brian Brazil. -- Issue #9281: Prevent race condition with mkdir in distutils. Patch by - Arfrever. +- Issue #10266: uu.decode didn't close in_file explicitly when it was given as a + filename. Patch by Brian Brazil. -- Issue #10229: Fix caching error in gettext. +- Issue #10110: Queue objects didn't recognize full queues when the maxsize + parameter had been reduced. -- Issue #10252: Close file objects in a timely manner in distutils code and - tests. Patch by Brian Brazil, completed by Éric Araujo. +- Issue #10160: Speed up operator.attrgetter. Patch by Christos Georgiou. -- Issue #10311: The signal module now restores errno before returning from - its low-level signal handler. Patch by Hallvard B Furuseth. +- logging: Added style option to basicConfig() to allow %, {} or $-formatting. -- The keyword only restriction for the places argument in - unittest.TestCase.assert[Not]AlmostEqual methods has been removed. +- Issue #5729: json.dumps() now supports using a string such as '\t' for + pretty-printing multilevel objects. -- Issue 6706: asyncore accept() method no longer raises EWOULDBLOCK/ECONNABORTED - on incomplete connection attempt but returns None instead. +- Issue #10253: FileIO leaks a file descriptor when trying to open a file for + append that isn't seekable. Patch by Brian Brazil. -- Issue #10266: uu.decode didn't close in_file explicitly when it was given - as a filename. Patch by Brian Brazil. +- Support context manager protocol for file-like objects returned by mailbox + ``get_file()`` methods. - Issue #10246: uu.encode didn't close file objects explicitly when filenames were given to it. Patch by Brian Brazil. -- Issue #10253: FileIO leaks a file descriptor when trying to open a file - for append that isn't seekable. Patch by Brian Brazil. +- Issue #10198: fix duplicate header written to wave files when writeframes() is + called without data. + +- Close file objects in modulefinder in a timely manner. + +- Close a io.TextIOWrapper object in email.parser in a timely manner. + +- Close a file object in distutils.sysconfig in a timely manner. + +- Close a file object in pkgutil in a timely manner. + +- Issue #10233: Close file objects in a timely manner in the tarfile module and + its test suite. + +- Issue #10093: ResourceWarnings are now issued when files and sockets are + deallocated without explicit closing. These warnings are silenced by default, + except in pydebug mode. + +- tarfile.py: Add support for all missing variants of the GNU sparse extensions + and create files with holes when extracting sparse members. + +- Issue #10218: Return timeout status from ``Condition.wait`` in threading. + +- Issue #7351: Add ``zipfile.BadZipFile`` spelling of the exception name and + deprecate the old name ``zipfile.BadZipfile``. - Issue #5027: The standard ``xml`` namespace is now understood by xml.sax.saxutils.XMLGenerator as being bound to http://www.w3.org/XML/1998/namespace. Patch by Troy J. Farrell. -- #7761: telnetlib.interact failures on Windows fixed. +- Issue #5975: Add csv.unix_dialect class. + +- Issue #7761: telnetlib.interact failures on Windows fixed. -- Issue #5117: Case normalization was needed on ntpath.relpath(). And - fixed root directory issue on posixpath.relpath(). (Ported working fixes - from ntpath) +- logging: Added style option to Formatter to allow %, {} or $-formatting. -- Issue #10041: The signature of optional arguments in socket.makefile() - didn't match that of io.open(), and they also didn't get forwarded - properly to TextIOWrapper in text mode. Patch by Kai Zhu. +- Issue #5178: Added tempfile.TemporaryDirectory class that can be used as a + context manager. + +- Issue #1349106: Generator (and BytesGenerator) flatten method and Header + encode method now support a 'linesep' argument. + +- Issue #5639: Add a *server_hostname* argument to ``SSLContext.wrap_socket`` in + order to support the TLS SNI extension. ``HTTPSConnection`` and ``urlopen()`` + also use this argument, so that HTTPS virtual hosts are now supported. + +- Issue #10166: Avoid recursion in pstats Stats.add() for many stats items. + +- Issue #10163: Skip unreadable registry keys during mimetypes initialization. + +- logging: Made StreamHandler terminator configurable. + +- logging: Allowed filters to be just callables. + +- logging: Added tests for _logRecordClass changes. + +- Issue #10092: Properly reset locale in calendar.Locale*Calendar classes. + +- logging: Added _logRecordClass, getLogRecordClass, setLogRecordClass to + increase flexibility of LogRecord creation. + +- Issue #5117: Case normalization was needed on ntpath.relpath(). Also fixed + root directory issue on posixpath.relpath(). (Ported working fixes from + ntpath.) + +- Issue #1343: xml.sax.saxutils.XMLGenerator now has an option + short_empty_elements to direct it to use self-closing tags when appropriate. + +- Issue #9807 (part 1): Expose the ABI flags in sys.abiflags. Add --abiflags + switch to python-config for command line access. + +- Issue #6098: Don't claim DOM level 3 conformance in minidom. + +- Issue #5762: Fix AttributeError raised by ``xml.dom.minidom`` when an empty + XML namespace attribute is encountered. + +- Issue #2830: Add the ``html.escape()`` function, which quotes all problematic + characters by default. Deprecate ``cgi.escape()``. + +- Issue #9409: Fix the regex to match all kind of filenames, for interactive + debugging in doctests. + +- Issue #9183: ``datetime.timezone(datetime.timedelta(0))`` will now return the + same instance as ``datetime.timezone.utc``. + +- Issue #7523: Add SOCK_CLOEXEC and SOCK_NONBLOCK to the socket module, where + supported by the system. Patch by Nikita Vetoshkin. + +- Issue #10063: file:// scheme will stop accessing remote hosts via ftp + protocol. file:// urls had fallback to access remote hosts via ftp. This was + not correct, change is made to raise a URLError when a remote host is tried to + access via file:// scheme. + +- Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is + created in modes 'a' or 'w' and then closed without adding any files. Raise + BadZipfile (rather than IOError) when opening small non-ZIP files. + +- Issue #10041: The signature of optional arguments in socket.makefile() didn't + match that of io.open(), and they also didn't get forwarded properly to + TextIOWrapper in text mode. Patch by Kai Zhu. + +- Issue #9003: http.client.HTTPSConnection, urllib.request.HTTPSHandler and + urllib.request.urlopen now take optional arguments to allow for server + certificate checking, as recommended in public uses of HTTPS. - Issue #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the current directory was deleted. Patch written by W. Trevor King. +- Issue #3873: Speed up unpickling from file objects that have a peek() method. + +- Issue #10075: Add a session_stats() method to SSLContext objects. + +- Issue #9948: Fixed problem of losing filename case information. + +Extension Modules +----------------- + +- Issue #5109: array.array constructor will now use fast code when + initial data is provided in an array object with correct type. + +- Issue #6317: Now winsound.PlaySound only accepts unicode. + +- Issue #6317: Now winsound.PlaySound can accept non ascii filename. + +- Issue #9377: Use Unicode API for gethostname on Windows. + +- Issue #10143: Update "os.pathconf" values. + +- Issue #6518: Support context manager protcol for ossaudiodev types. + +- Issue #678250: Make mmap flush a noop on ACCESS_READ and ACCESS_COPY. + +- Issue #9054: Fix a crash occurring when using the pyexpat module with expat + version 2.0.1. + +- Issue #5355: Provide mappings from Expat error numbers to string descriptions + and backwards, in order to actually make it possible to analyze error codes + provided by ExpatError. + +- The Unicode database was updated to 6.0.0. + +C-API +----- + +- Issue #10288: The deprecated family of "char"-handling macros + (ISLOWER()/ISUPPER()/etc) have now been removed: use Py_ISLOWER() etc instead. + +- Issue #9778: Hash values are now always the size of pointers. A new Py_hash_t + type has been introduced. + +Tools/Demos +----------- + +- Issue #10117: Tools/scripts/reindent.py now accepts source files that use + encoding other than ASCII or UTF-8. Source encoding is preserved when + reindented code is written to a file. + +- Issue #7287: Demo/imputil/knee.py was removed. + +Tests +----- + +- Issue #3699: Fix test_bigaddrspace and extend it to test bytestrings as well + as unicode strings. Initial patch by Sandro Tosi. + +- Issue #10294: Remove dead code form test_unicode_file. + +- Issue #10123: Don't use non-ascii filenames in test_doctest tests. Add a new + test specific to unicode (non-ascii name and filename). + +Build +----- + +- Issue #10268: Add a --enable-loadable-sqlite-extensions option to configure. + +- Issue #8852: Allow the socket module to build on OpenSolaris. + +- Drop -OPT:Olimit compiler option. + +- Issue #10094: Use versioned .so files on GNU/kfreeBSD and the GNU Hurd. + +- Accept Oracle Berkeley DB 5.0 and 5.1 as backend for the dbm extension. + +- Issue #7473: avoid link errors when building a framework with a different set + of architectures than the one that is currently installed. + + +What's New in Python 3.2 Alpha 3? +================================= + +*Release date: 09-Oct-2010* + +Core and Builtins +----------------- + +- Issue #10068: Global objects which have reference cycles with their module's + dict are now cleared again. This causes issue #7140 to appear again. + +- Issue #9738: Document PyErr_SetString() and PyErr_SetFromErrnoWithFilename() + encodings. + +- ast.literal_eval() can now handle negative numbers. It is also a little more + liberal in what it accepts without compromising the safety of the evaluation. + For example, 3j+4 and 3+4+5 are both accepted. + +- Issue #10006: type.__abstractmethods__ now raises an AttributeError. As a + result metaclasses can now be ABCs (see #9533). + +- Issue #8670: ctypes.c_wchar supports non-BMP characters with 32 bits wchar_t. + +- Issue #8670: PyUnicode_AsWideChar() and PyUnicode_AsWideCharString() replace + UTF-16 surrogate pairs by single non-BMP characters for 16 bits Py_UNICODE and + 32 bits wchar_t (eg. Linux in narrow build). + +- Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression + introduced by issue #9324. + +- Issue #9979: Create function PyUnicode_AsWideCharString(). + +- Issue #7397: Mention that importlib.import_module() is probably what someone + really wants to be using in __import__'s docstring. + +- Issue #8521: Allow CreateKeyEx, OpenKeyEx, and DeleteKeyEx functions of winreg + to use named arguments. + +- Issue #9930: Remove bogus subtype check that was causing (e.g.) + float.__rdiv__(2.0, 3) to return NotImplemented instead of the expected 1.5. + +- Issue #9808: Implement os.getlogin for Windows. Patch by Jon Anglin. + +- Issue #9901: Destroying the GIL in Py_Finalize() can fail if some other + threads are still running. Instead, reinitialize the GIL on a second call to + Py_Initialize(). + +- All SyntaxErrors now have a column offset and therefore a caret when the error + is printed. + +- Issue #9252: PyImport_Import no longer uses a fromlist hack to return the + module that was imported, but instead gets the module from sys.modules. + +- Issue #9213: The range type_items now provides index() and count() methods, to + conform to the Sequence ABC. Patch by Daniel Urban and Daniel Stutzbach. + +- Issue #7994: Issue a PendingDeprecationWarning if object.__format__ is called + with a non-empty format string. This is an effort to future-proof user + code. If a derived class does not currently implement __format__ but later + adds its own __format__, it would most likely break user code that had + supplied a format string. This will be changed to a DeprecationWaring in + Python 3.3 and it will be an error in Python 3.4. + +- Issue #9828: Destroy the GIL in Py_Finalize(), so that it gets properly + re-created on a subsequent call to Py_Initialize(). The problem (a crash) + wouldn't appear in 3.1 or 2.7 where the GIL's structure is more trivial. + +- Issue #9210: Configure option --with-wctype-functions was removed. Using the + functions from the libc caused the methods .upper() and lower() to become + locale aware and created subtly wrong results. + +- Issue #9738: PyUnicode_FromFormat() and PyErr_Format() raise an error on a + non-ASCII byte in the format string. + +- Issue #4617: Previously it was illegal to delete a name from the local + namespace if it occurs as a free variable in a nested block. This limitation + of the compiler has been lifted, and a new opcode introduced (DELETE_DEREF). + +- Issue #9804: ascii() now always represents unicode surrogate pairs as a single + ``\UXXXXXXXX``, regardless of whether the character is printable or not. + Also, the "backslashreplace" error handler now joins surrogate pairs into a + single character on UCS-2 builds. + +- Issue #9757: memoryview objects get a release() method to release the + underlying buffer (previously this was only done when deallocating the + memoryview), and gain support for the context management protocol. + +- Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid + thread-local storage key. + +Library +------- + +- Issue #2236: distutils' mkpath ignored the mode parameter. + +- Fix typo in one sdist option (medata-check). + +- Issue #9199: Fix incorrect use of distutils.cmd.Command.announce. + +- Issue #1718574: Fix options that were supposed to accept arguments but did + not in build_clib. + +- Issue #9437: Fix building C extensions with non-default LDFLAGS. + +- Issue #4661: email can now parse bytes input and generate either converted + 7bit output or bytes output. Email version bumped to 5.1.0. + +- Issue #1589: Add ssl.match_hostname(), to help implement server identity + verification for higher-level protocols. + - Issue #9759: GzipFile now raises ValueError when an operation is attempted after the file is closed. Patch by Jeffrey Finkelstein. - Issue #9042: Fix interaction of custom translation classes and caching in gettext. +- Issue #6706: asyncore.dispatcher now provides a handle_accepted() method + returning a (sock, addr) pair which is called when a connection has been + established with a new remote endpoint. This is supposed to be used as a + replacement for old handle_accept() and avoids the user to call accept() + directly. + - Issue #9065: tarfile no longer uses "root" as the default for the uname and gname field. -- Issue #8980: Fixed a failure in distutils.command check that was shadowed - by an environment that does not have docutils. Patch by Arfrever. +- Issue #8980: Fixed a failure in distutils.command check that was shadowed by + an environment that does not have docutils. Patch by Arfrever. - Issue #1050268: parseaddr now correctly quotes double quote and backslash characters that appear inside quoted strings in email addresses. -- Issue #10004: quoprimime no longer generates a traceback when confronted - with invalid characters after '=' in a Q-encoded word. +- Issue #10004: quoprimime no longer generates a traceback when confronted with + invalid characters after '=' in a Q-encoded word. + +- Issue #1491: BaseHTTPServer nows send a ``100 Continue`` response before + sending a 200 OK for the Expect: 100-continue request header. + +- Issue #9360: Cleanup and improvements to the nntplib module. The API now + conforms to the philosophy of bytes and unicode separation in Python 3. A + test suite has also been added. + +- Issue #9962: GzipFile now has the peek() method. + +- Issue #9090: When a socket with a timeout fails with EWOULDBLOCK or EAGAIN, + retry the select() loop instead of bailing out. This is because select() can + incorrectly report a socket as ready for reading (for example, if it received + some data with an invalid checksum). + +- Issue #3612: Added new types to ctypes.wintypes. (CHAR and pointers) - Issue #9950: Fix socket.sendall() crash or misbehaviour when a signal is - received. Now sendall() properly calls signal handlers if necessary, - and retries sending if these returned successfully, including on sockets - with a timeout. + received. Now sendall() properly calls signal handlers if necessary, and + retries sending if these returned successfully, including on sockets with a + timeout. + +- Issue #9947: logging: Fixed locking bug in stopListening. + +- Issue #9945: logging: Fixed locking bugs in addHandler/removeHandler. - Issue #9936: Fixed executable lines' search in the trace module. +- Issue #9790: Rework imports necessary for samefile and sameopenfile + in ntpath. + - Issue #9928: Properly initialize the types exported by the bz2 module. -- Issue #9854: The default read() implementation in io.RawIOBase now - handles non-blocking readinto() returning None correctly. +- Issue #1675951: Allow GzipFile to work with unseekable file objects. Patch by + Florian Festi. -- Issue #9853: Fix the signature of SSLSocket.recvfrom() and - SSLSocket.sendto() to match the corresponding socket methods. +- Logging: Added QueueListener class to facilitate logging usage for + performance-critical threads. -- Issue #9792: In case of connection failure, socket.create_connection() - would swallow the exception and raise a new one, making it impossible - to fetch the original errno, or to filter timeout errors. Now the - original error is re-raised. +- Issue #9916: Add some missing errno symbols. -- Issue #9826: OrderedDict.__repr__ can now handle self-referential - values: d['x'] = d. +- Issue #9877: Expose sysconfig.get_makefile_filename() -- Issue #9758: When fcntl.ioctl() was called with mutable_flag set to True, - and the passed buffer was exactly 1024 bytes long, the buffer wouldn't - be updated back after the system call. Original patch by Brian Brazil. +- logging: Added hasHandlers() method to Logger and LoggerAdapter. -- Issue #6656: fix locale.format_string to handle escaped percents - and mappings. +- Issue #9908: Fix os.stat() on bytes paths under Windows 7. -- Issue #1100562: Fix deep-copying of objects derived from the list and - dict types. Patch by Michele Orrù and Björn Lindqvist. +- Issue #2643: msync() is not called anymore when deallocating an open mmap + object, only munmap(). -- Issue #9753: Fixed socket.dup, which did not always work correctly - on Windows. +- logging: Changed LoggerAdapter implementation internally, to make it easier to + subclass in a useful way. -- Issue #1868: Eliminate subtle timing issues in thread-local objects by - getting rid of the cached copy of thread-local attribute dictionary. +- logging: hasHandlers method was added to Logger, and isEnabledFor, + getEffectiveLevel, hasHandlers and setLevel were added to LoggerAdapter. + LoggerAdapter was introduced into the unit tests for logging. -- Issue #8797: urllib2 does a retry for Basic Authentication failure instead of - falling into recursion. +- Issue #1686: Fix string.Template when overriding the pattern attribute. -- Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four - character years even if the message contains RFC822 two character years. +- Issue #9854: SocketIO objects now observe the RawIOBase interface in + non-blocking mode: they return None when an operation would block (instead of + raising an exception). -- Issue #8750: Fixed MutableSet's methods to correctly handle - reflexive operations, namely x -= x and x ^= x. +- Issue #1730136: Fix the comparison between a tk.font.Font and an object of + another kind. -- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing - error handling when accepting a new connection. +- Issue #9441: logging has better coverage for rotating file handlers. -- Issue #658749: asyncore's connect() method now correctly interprets winsock - errors. +- Issue #9865: collections.OrderedDict now has a __sizeof__ method. -- Issue #9214: Set operations on KeysView or ItemsView in the collections - module now correctly return a set. (Patch by Eli Bendersky.) +- Issue #9854: The default read() implementation in io.RawIOBase now handles + non-blocking readinto() returning None correctly. -- Issue #9617: Signals received during a low-level write operation aren't - ignored by the buffered IO layer anymore. +- Issue #1552: socket.socketpair() now returns regular socket.socket objects + supporting the whole socket API (rather than the "raw" _socket.socket + objects). -- Issue #9605: posix.getlogin() decodes the username with file filesystem - encoding and surrogateescape error handler. Patch written by David Watson. +- Issue #9853: Fix the signature of SSLSocket.recvfrom() and SSLSocket.sendto() + to match the corresponding socket methods. -- Issue #9603: posix.ttyname() and posix.ctermid() decode the terminal name - using the filesystem encoding and surrogateescape error handler. Patch - written by David Watson. +- Issue 9840: Added a decorator to reprlib for wrapping __repr__ methods to make + them handle recursive calls within the same thread. -- Issue #8688: MANIFEST files created by distutils now include a magic - comment indicating they are generated. Manually maintained MANIFESTs - without this marker will not be overwritten or removed. +- logging: Enhanced HTTPHandler with secure and credentials initializers. -- Issue #7467: when reading a file from a ZIP archive, its CRC is checked - and a BadZipfile error is raised if it doesn't match (as used to be the - case in Python 2.5 and earlier). +- Issue #767645: Set os.path.supports_unicode_filenames to True on Mac OS X. -- Issue #9550: a BufferedReader could issue an additional read when the - original read request had been satisfied, which could block indefinitely - when the underlying raw IO channel was e.g. a socket. Report and original - patch by Jason V. Miller. +- Issue #9837: The read() method of ZipExtFile objects (as returned by + ZipFile.open()) could return more bytes than requested. -- Issue #6915: Under Windows, os.listdir() didn't release the Global - Interpreter Lock around all system calls. Original patch by Ryan Kelly. +- Issue #9826: OrderedDict.__repr__ can now handle self-referential values: + d['x'] = d. -- Issue #3757: thread-local objects now support cyclic garbage collection. - Thread-local objects involved in reference cycles will be deallocated - timely by the cyclic GC, even if the underlying thread is still running. +- Issue #9825: Using __del__ in the definition of collections.OrderedDict made + it possible for the user to create self-referencing ordered dictionaries which + become permanently uncollectable GC garbage. Reinstated the Python 3.1 + approach of using weakref proxies so that reference cycles never get created + in the first place. -- Fix Issue8280 - urllib2's Request method will remove fragements in the url. - This is how it is supposed to work, wget and curl do the same. Previous - behavior was wrong. +- Issue #9579, #9580: Fix os.confstr() for value longer than 255 bytes and + encode the value with filesystem encoding and surrogateescape (instead of + utf-8 in strict mode) . Patch written by David Watson. -- Issue #2944: asyncore doesn't handle connection refused correctly. +- Issue #9632: Remove sys.setfilesystemencoding() function: use PYTHONFSENCODING + environment variable to set the filesystem encoding at Python startup. + sys.setfilesystemencoding() creates inconsistencies because it is unable to + reencode all filenames in all objects. -- Issue #3196: email header decoding is now forgiving if an RFC2047 - encoded word encoded in base64 is lacking padding. +- Issue #9410: Various optimizations to the pickle module, leading to speedups + up to 4x (depending on the benchmark). Mostly ported from Unladen Swallow; + initial patch by Alexandre Vassalotti. -- Issue #8447: Make distutils.sysconfig follow symlinks in the path to - the interpreter executable. This fixes a failure of test_httpservers - on OS X. +- The pprint module now supports printing OrderedDicts in their given order + (formerly, it would sort the keys). -- Issue #7372: Fix pstats regression when stripping paths from profile - data generated with the profile module. +- Logging: Added QueueHandler class to facilitate logging usage with + multiprocessing. -- Issue #4108: In urllib.robotparser, if there are multiple 'User-agent: *' - entries, consider the first one. +- Issue #9707: Rewritten reference implementation of threading.local which is + friendlier towards reference cycles. This change is not normally visible + since an optimized C implementation (_thread._local) is used instead. -- Issue #8397: Raise an error when attempting to mix iteration and regular - reads on a BZ2File object, rather than returning incorrect results. +- Issue #6394: os.getppid() is now supported on Windows. Note that it will + still return the id of the parent process after it has exited. This process + id may even have been reused by another unrelated process. -- Issue #7909: Do not touch paths with the special prefixes ``\\.\`` - or ``\\?\`` in ntpath.normpath(). +- Issue #9792: In case of connection failure, socket.create_connection() would + swallow the exception and raise a new one, making it impossible to fetch the + original errno, or to filter timeout errors. Now the original error is + re-raised. -- Issue #5294: Fix the behavior of pdb's "continue" command when called - in the top-level debugged frame. +- Issue #9758: When fcntl.ioctl() was called with mutable_flag set to True, and + the passed buffer was exactly 1024 bytes long, the buffer wouldn't be updated + back after the system call. Original patch by Brian Brazil. -- Issue #5727: Restore the ability to use readline when calling into pdb - in doctests. +- Updates to the random module: -- Issue #6719: In pdb, do not stop somewhere in the encodings machinery - if the source file to be debugged is in a non-builtin encoding. + * Document which parts of the module are guaranteed to stay the same across + versions and which parts are subject to change. -- Issue #8048: Prevent doctests from failing when sys.displayhook has - been reassigned. + * Update the seed() method to use all of the bits in a string instead of just + the hash value. This makes better use of the seed value and assures the + seeding is platform independent. Issue #7889. -- Issue #8015: In pdb, do not crash when an empty line is entered as - a breakpoint command. + * Improved the random()-->integer algorithm used in choice(), shuffle(), + sample(), randrange(), and randint(). Formerly, it used int(n*random()) + which has a slight bias whenever n is not a power of two. Issue #9025. -- Issue #5146: Handle UID THREAD command correctly in imaplib. + * Improved documentation of arguments to randrange(). Issue #9379. -- Issue #5147: Fix the header generated for cookie files written by - http.cookiejar.MozillaCookieJar. +- collections.OrderedDict now supports a new method for repositioning keys to + either end. -- Issue #8198: In pydoc, output all help text to the correct stream - when sys.stdout is reassigned. +- Issue #9754: Similarly to assertRaises and assertRaisesRegexp, unittest test + cases now also have assertWarns and assertWarnsRegexp methods to check that a + given warning type was triggered by the code under test. -- Issue #8230: Fix Lib/test/sortperf.py. +- Issue #5506: BytesIO objects now have a getbuffer() method exporting a view of + their contents without duplicating them. The view is both readable and + writable. -- Issue #7395: Fix tracebacks in pstats interactive browser. +- Issue #7566: Implement os.path.sameopenfile for Windows. -- Issue #1713: Fix os.path.ismount(), which returned true for symbolic links - across devices. +- Issue #9293: I/O streams now raise ``io.UnsupportedOperation`` when an + unsupported operation is attempted (for example, writing to a file open only + for reading). -- Issue #8826: Properly load old-style "expires" attribute in http.cookies. +- hashlib has two new constant attributes: algorithms_guaranteed and + algorithms_avaiable that respectively list the names of hash algorithms + guaranteed to exist in all Python implementations and the names of hash + algorithms available in the current process. -- Issue #1690103: Fix initial namespace for code run with trace.main(). +- A new package ``concurrent.futures`` as defined by PEP 3148. -- Issue #9354: Provide getsockopt() in asyncore's file_wrapper. +C-API +----- -- Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when - re-initializing a buffered IO object by calling its ``__init__`` method. +- Add PyErr_SyntaxLocationEx, which supports passing a column offset. -- Issue #8620: when a Cmd is fed input that reaches EOF without a final - newline, it no longer truncates the last character of the last command line. +- Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or + PySequence_DelSlice when the object doesn't have any mapping operations + defined. -- Issue #3704: http.cookiejar was not properly handling URLs with a / in the - parameters. +Tools/Demos +----------- -- Issue #4629: getopt raises an error if an argument ends with = whereas getopt - doesn't except a value (eg. --help= is rejected if getopt uses ['help='] long - options). +- Issue #9188: The gdb extension now handles correctly narrow (UCS2) as well as + wide (UCS4) unicode builds for both the host interpreter (embedded inside gdb) + and the interpreter under test. -- Issue #7895: platform.mac_ver() no longer crashes after calling os.fork() +Tests +----- -- Issue #9323: Fixed a bug in trace.py that resulted in loosing the - name of the script being traced. Patch by Eli Bendersky. +- Issue #9308: Added tests for importing encoded modules that do not + depend on specific stdlib modules being encoded in a certain way. -- Issue #9282: Fixed --listfuncs option of trace.py. Thanks Eli - Bendersky for the patch. +- Issue #1051: Add a script (Lib/test/make_ssl_certs.py) to generate the custom + certificate and private key files used by SSL-related certs. -- Issue #1555570: email no longer inserts extra blank lines when a \r\n - combo crosses an 8192 byte boundary. +- Issue #9978: Wait until subprocess completes initialization. (Win32KillTests + in test_os) -- Issue #9243: Fix sndhdr module and add unit tests, contributed by James Lee. +- Issue #7110: regrtest now sends test failure reports and single-failure + tracebacks to stderr rather than stdout. -- Issue #9137: Fix issue in MutableMapping.update, which incorrectly - treated keyword arguments called 'self' or 'other' specially. +- Issue #9628: fix runtests.sh -x option so more than one test can be excluded. -- Issue #7646: The fnmatch pattern cache no longer grows without bound. +- Issue #9899: Fix test_tkinter.test_font on various platforms. Patch by Ned + Deily. -- Issue #9136: Fix 'dictionary changed size during iteration' - RuntimeError produced when profiling the decimal module. This was - due to a dangerous iteration over 'locals()' in Context.__init__. +- Issue #9894: Do not hardcode ENOENT in test_subprocess. -- Fix extreme speed issue in Decimal.pow when the base is an exact - power of 10 and the exponent is tiny (for example, - Decimal(10) ** Decimal('1e-999999999')). +- Issue #9315: Added tests for the trace module. Patch by Eli Bendersky. -- Issue #9130: Fix validation of relative imports in parser module. +- Issue #9323: Make test.regrtest.__file__ absolute, this was not always the + case when running profile or trace, for example. -- Issue #9128: Fix validation of class decorators in parser module. +- Issue #9568: Fix test_urllib2_localnet on OS X 10.3. -- Issue #5468: urlencode to handle bytes type and other encodings in its query - parameter. Patch by Dan Mahn. +Build +----- -- Issue #7673: Fix security vulnerability (CVE-2010-2089) in the audioop - module, ensure that the input string length is a multiple of the frame size +- Issue #10062: Allow building on platforms which do not have sem_timedwait. -- Issue #6589: cleanup asyncore.socket_map in case smtpd.SMTPServer constructor - raises an exception. +- Issue #10054: Some platforms provide uintptr_t in inttypes.h. Patch by Akira + Kitada. -- Issue #9075: In the ssl module, remove the setting of a ``debug`` flag - on an OpenSSL structure. +- Issue #10055: Make json C89-compliant in UCS4 mode. -- Issue #8682: The ssl module now temporary increments the reference count of - a socket object got through ``PyWeakref_GetObject``, so as to avoid possible - deallocation while the object is still being used. +- Issue #9552: Avoid unnecessary rebuild of OpenSSL. (Windows) -- Issue #1368368: FancyURLOpener class changed to throw an Exception on wrong - password instead of presenting an interactive prompt. Older behavior can be - obtained by passing retry=True to http_error_xxx methods of FancyURLOpener. +- Issue #1633863: Don't ignore $CC under AIX. -- Issue #8203: Fix IDLE Credits dialog: view_file() uses its encoding argument. +- Issue #9810: Compile bzip2 source files in Python's project file directly. It + used to be built with bzip2's makefile. -- Issue #8720: fix regression caused by fix for #4050 by making getsourcefile - smart enough to find source files in the linecache. +- Issue #9848: Stopping trying to build _weakref in setup.py as it is a built-in + module. -- Issue #5610: feedparser no longer eats extra characters at the end of - a body part if the body part ends with a \r\n. +- Issue #9806: python-config now has an ``--extension-suffix`` option that + outputs the suffix for dynamic libraries including the ABI version name + defined by PEP 3149. -- Fix codecs.escape_encode to return the correct consumed size. +- Issue #941346: Improve the build process under AIX and allow Python to be + built as a shared library. Patch by Sébastien Sablé. -- Issue #8897: Fix sunau module, use bytes to write the header. Patch written - by Thomas Jollans. +- Issue #4026: Make the fcntl extension build under AIX. Patch by Sébastien + Sablé. -- Issue #6470: Drop UNC prefix in FixTk. +- Issue #9701: The MacOSX installer can patch the shell profile to ensure that + the "bin" directory inside the framework is on the shell's search path. This + feature now also supports the ZSH shell. -- Issue #4768: base64 encoded email body parts were incorrectly stored as - binary strings. They are now correctly converted to strings. -- Issue #8833: tarfile created hard link entries with a size field != 0 by - mistake. +What's New in Python 3.2 Alpha 2? +================================= -- Charset.body_encode now correctly handles base64 encoding by encoding - with the output_charset before calling base64mime.encode. Passes the - tests from 2.x issue #1368247. +*Release date: 05-Sep-2010* -- Issue #7150: Raise OverflowError if the result of adding or subtracting - timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range. +Core and Builtins +----------------- -- Issue #4769: Fix main() function of the base64 module, use sys.stdin.buffer - and sys.stdout.buffer (instead of sys.stdin and sys.stdout) to use the bytes - API +- Issue #9225: Remove the ROT_FOUR and DUP_TOPX opcode, the latter replaced by + the new (and simpler) DUP_TOP_TWO. Performance isn't changed, but our + bytecode is a bit simplified. Patch by Demur Rumed. -- Issue #6662: Fix parsing of malformatted charref (&#bad;), patch written by - Fredrik Håård +- Issue #9766: Rename poorly named variables exposed by _warnings to prevent + confusion with the proper variables names from 'warnings' itself. -- Issue #6268: Fix seek() method of codecs.open(), don't read or write the BOM - twice after seek(0). Fix also reset() method of codecs, UTF-16, UTF-32 and - StreamWriter classes. +- Issue #9212: dict_keys and dict_items now provide the isdisjoint() method, to + conform to the Set ABC. Patch by Daniel Urban. -- Issue #8782: Add a trailing newline in linecache.updatecache to the last line - of files without one. +- Issue #9737: Fix a crash when trying to delete a slice or an item from a + memoryview object. -- Issue #8729: Return NotImplemented from collections.Mapping.__eq__ when - comparing to a non-mapping. +- Issue #9549: sys.setdefaultencoding() and PyUnicode_SetDefaultEncoding() are + now removed, since their effect was inexistent in 3.x (the default encoding is + hardcoded to utf-8 and cannot be changed). -- Issue #8774: tabnanny uses the encoding cookie (#coding:...) to use the - correct encoding +- Issue #7415: PyUnicode_FromEncodedObject() now uses the new buffer API + properly. Patch by Stefan Behnel. -- Issue #7507: Quote "!" in pipes.quote(); it is special to some shells. +- Issue #5553: The Py_LOCAL_INLINE macro now results in inlining on most + platforms. Previously, it inlined only when using Microsoft Visual C. -- Issue #8663: distutils.log emulates backslashreplace error handler. Fix - compilation in a non-ASCII directory if stdout encoding is ASCII (eg. if - stdout is not a TTY). +- Issue #9712: Fix tokenize on identifiers that start with non-ascii names. -- Issue #1285086: Speed up urllib.parse functions: quote, quote_from_bytes, - unquote, unquote_to_bytes. +- Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t. -- Issue #8688: Distutils now recalculates MANIFEST everytime. +- Issue #9684: Added a definition for SIZEOF_WCHAR_T to PC/pyconfig.h, to match + the pyconfig.h generated by configure on other systems. -- Issue #5099: subprocess.Popen.__del__ no longer references global objects - to prevent issues during interpreter shutdown. +- Issue #9666: Only catch AttributeError in hasattr(). All other exceptions that + occur during attribute lookup are now propagated to the caller. -- Issue #8681: Make the zlib module's error messages more informative when - the zlib itself doesn't give any detailed explanation. +- Issue #8622: Add PYTHONFSENCODING environment variable to override the + filesystem encoding. -- Issue #8674: Fixed a number of incorrect or undefined-behaviour-inducing - overflow checks in the audioop module. +- Issue #5127: The C functions that access the Unicode Database now accept and + return characters from the full Unicode range, even on narrow unicode builds + (Py_UNICODE_TOLOWER, Py_UNICODE_ISDECIMAL, and others). A visible difference + in Python is that unicodedata.numeric() now returns the correct value for + large code points, and repr() may consider more characters as printable. -- Issue #8571: Fix an internal error when compressing or decompressing a - chunk larger than 1GB with the zlib module's compressor and decompressor - objects. +- Issue #9425: Create PyModule_GetFilenameObject() function to get the filename + as a unicode object, instead of a byte string. Function needed to support + unencodable filenames. Deprecate PyModule_GetFilename() in favor on the new + function. -- Issue #8573: asyncore _strerror() function might throw ValueError. +- Issue #8063: Call _PyGILState_Init() earlier in Py_InitializeEx(). -- Issue #8483: asyncore.dispatcher's __getattr__ method produced confusing - error messages when accessing undefined class attributes because of the cheap - inheritance with the underlying socket object. +- Issue #9612: The set object is now 64-bit clean under Windows. -- Issue #7472: Fixed typo in email.encoders module; messages using ISO-2022 - character sets will now consistently use a Content-Transfer-Encoding of - 7bit rather than sometimes being marked as 8bit. +- Issue #8202: sys.argv[0] is now set to '-m' instead of '-c' when searching for + the module file to be executed with the -m command line option. -- Issue #4265: shutil.copyfile() was leaking file descriptors when disk fills. - Patch by Tres Seaver. +- Issue #9599: Create PySys_FormatStdout() and PySys_FormatStderr() functions to + write a message formatted by PyUnicode_FromFormatV() to sys.stdout and + sys.stderr. -- Issue #7755: Use an unencumbered audio file for tests. +- Issue #9542: Create PyUnicode_FSDecoder() function, a ParseTuple converter: + decode bytes objects to unicode using PyUnicode_DecodeFSDefaultAndSize(); str + objects are output as-is. -- Issue #8621: uuid.uuid4() returned the same sequence of values in the - parent and any children created using ``os.fork`` on MacOS X 10.6. +- Issue #9203: Computed gotos are now enabled by default on supported compilers + (which are detected by the configure script). They can still be disable + selectively by specifying --without-computed-gotos. -- Issue #8567: Fix precedence of signals in Decimal module: when a - Decimal operation raises multiple signals and more than one of those - signals is trapped, the specification determines the order in which - the signals should be handled. In many cases this order wasn't - being followed, leading to the wrong Python exception being raised. +- Issue #9425: Create PyErr_WarnFormat() function, similar to PyErr_WarnEx() but + use PyUnicode_FromFormatV() to format the warning message. -- Issue #7865: The close() method of :mod:`io` objects should not swallow - exceptions raised by the implicit flush(). Also ensure that calling - close() several times is supported. Patch by Pascal Chambon. +- Issue #8530: Prevent stringlib fastsearch from reading beyond the front of an + array. -- Issue #4687: Fix accuracy of garbage collection runtimes displayed with - gc.DEBUG_STATS. +- Issue #5319: Print an error if flushing stdout fails at interpreter shutdown. -- Issue #8354: The siginterrupt setting is now preserved for all signals, - not just SIGCHLD. +- Issue #9337: The str() of a float or complex number is now identical to its + repr(). -- Issue #8464: tarfile no longer creates files with execute permissions set - when mode="w|" is used. +- Issue #9416: Fix some issues with complex formatting where the output with no + type specifier failed to match the str output: -- Issue #7834: Fix connect() of Bluetooth L2CAP sockets with recent versions - of the Linux kernel. Patch by Yaniv Aknin. + - format(complex(-0.0, 2.0), '-') omitted the real part from the output, + - format(complex(0.0, 2.0), '-') included a sign and parentheses. -- Issue #6312: Fixed http HEAD request when the transfer encoding is chunked. - It should correctly return an empty response now. +Extension Modules +----------------- -- Issue #8549: Fix compiling the _ssl extension under AIX. Patch by - Sridhar Ratnakumar. +- Issue #8013: time.asctime and time.ctime no longer call system + asctime and ctime functions. The year range for time.asctime is now + 1900 through maxint. The range for time.ctime is the same as for + time.localtime. The string produced by these functions is longer + than 24 characters when year is greater than 9999. -- Issue #8391: os.execvpe() and os.getenv() supports unicode with surrogates - and bytes strings for environment keys and values, and use - sys.getfilesystemencoding() instead of sys.getdefautltencoding() +- Issue #6608: time.asctime is now checking struct tm fields its input + before passing it to the system asctime. Patch by MunSic Jeong. -- Issue #2302: Fix a race condition in SocketServer.BaseServer.shutdown, - where the method could block indefinitely if called just before the - event loop started running. This also fixes the occasional freezes - witnessed in test_httpservers. +- Issue #8734: Avoid crash in msvcrt.get_osfhandle() when an invalid file + descriptor is provided. Patch by Pascal Chambon. -- Issue #8524: When creating an SSL socket, the timeout value of the - original socket wasn't retained (instead, a socket with a positive timeout - would be turned into a non-blocking SSL socket). +- Issue #7736: Release the GIL around calls to opendir() and closedir() in the + posix module. Patch by Marcin Bachry. -- Issue #5103: SSL handshake would ignore the socket timeout and block - indefinitely if the other end didn't respond. +- Issue #4835: make PyLong_FromSocket_t() and PyLong_AsSocket_t() private to the + socket module, and fix the width of socket descriptors to be correctly + detected under 64-bit Windows. -- The do_handshake() method of SSL objects now adjusts the blocking mode of - the SSL structure if necessary (as other methods already do). +- Issue #1027206: Support IDNA in gethostbyname, gethostbyname_ex, getaddrinfo + and gethostbyaddr. getnameinfo is now restricted to numeric addresses as + input. -- Issue #8108: Fix the unwrap() method of SSL objects when the socket has - a non-infinite timeout. Also make that method friendlier with applications - wanting to continue using the socket in clear-text mode, by disabling - OpenSSL's internal readahead. Thanks to Darryl Miles for guidance. +- Issue #9214: Set operations on a KeysView or ItemsView in collections now + correctly return a set. Patch by Eli Bendersky. -- Issue #8468: bz2.BZ2File() accepts str with surrogates and bytes filenames +- Issue #5737: Add Solaris-specific mnemonics in the errno module. Patch by + Matthew Ahrens. -- Issue #8496: make mailcap.lookup() always return a list, rather than an - iterator. Patch by Gregory Nofi. +- Restore GIL in nis_cat in case of error. Decode NIS data to fs encoding, using + the surrogate error handler. -- Issue #8195: Fix a crash in sqlite Connection.create_collation() if the - collation name contains a surrogate character. +- Issue #665761: ``functools.reduce()`` will no longer mask exceptions other + than ``TypeError`` raised by the iterator argument. -- Issue #8484: Load all ciphers and digest algorithms when initializing - the _ssl extension, such that verification of some SSL certificates - doesn't fail because of an "unknown algorithm". +- Issue #9570: Use PEP 383 decoding in os.mknod and os.mkfifo. -- Issue #4814: timeout parameter is now applied also for connections resulting - from PORT/EPRT commands. +- Issue #6915: Under Windows, os.listdir() didn't release the Global Interpreter + Lock around all system calls. Original patch by Ryan Kelly. -- Issue #3817: ftplib.FTP.abort() method now considers 225 a valid response - code as stated in RFC-959 at chapter 5.4. +- Issue #8524: Add a detach() method to socket objects, so as to put the socket + into the closed state without closing the underlying file descriptor. -- Issue #8394: _ctypes.dlopen() accepts bytes, bytearray and str with - surrogates. +- Issue #477863: Emit a ResourceWarning at shutdown if gc.garbage is not empty. -- Issue #7606: XML-RPC traceback stored in X-traceback is now encoded to ASCII - using backslashreplace error handler +- Issue #6869: Fix a refcount problem in the _ctypes extension. -- Issue #5277: Fix quote counting when parsing RFC 2231 encoded parameters. +- Issue #5504: ctypes should now work with systems where mmap can't be + PROT_WRITE and PROT_EXEC. -- Issue #8383: pickle and pickletools use surrogatepass error handler when - encoding unicode as utf8 to support lone surrogates and stay compatible with - Python 2.x and 3.0 +- Issue #9507: Named tuple repr will now automatically display the right name in + a tuple subclass. -- Issue #8179: Fix macpath.realpath() on a non-existing path. +- Issue #9324: Add parameter validation to signal.signal on Windows in order to + prevent crashes. -- Issue #8139: ossaudiodev didn't initialize its types properly, therefore - some methods (such as oss_mixer_device.fileno()) were not available. - Initial patch by Bertrand Janin. +- Issue #9526: Remove some outdated (int) casts that were preventing the array + module from working correctly with arrays of more than 2**31 elements. -- Issue #7512: shutil.copystat() could raise an OSError when the filesystem - didn't support chflags() (for example ZFS under FreeBSD). The error is - now silenced. +- Fix memory leak in ssl._ssl._test_decode_cert. -- Issue #3890, #8222: Fix recv() and recv_into() on non-blocking SSL sockets. - Also, enable the SSL_MODE_AUTO_RETRY flag on SSL sockets, so that blocking - reads and writes are always retried by OpenSSL itself. +- Issue #8065: Fix memory leak in readline module (from failure to free the + result of history_get_history_state()). -- Issue #6716/2: Backslash-replace error output in compilall. +- Issue #9450: Fix memory leak in readline.replace_history_item and + readline.remove_history_item for readline version >= 5.0. -Extension Modules ------------------ +- Issue #8105: Validate file descriptor passed to mmap.mmap on Windows. -- Issue #6317: Now winsound.PlaySound can accept non ascii filename. +- Issue #8046: Add context manager protocol support and .closed property to mmap + objects. -- Issue #9054: Fix a crash occurring when using the pyexpat module - with expat version 2.0.1. +Library +------- -- Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression - introduced by issue #9324. +- Issue #7451: Improve decoding performance of JSON objects, and reduce the + memory consumption of said decoded objects when they use the same strings as + keys. -- Issue #8734: Avoid crash in msvcrt.get_osfhandle() when an invalid file - descriptor is provided. Patch by Pascal Chambon. +- Issue #1100562: Fix deep-copying of objects derived from the list and dict + types. Patch by Michele Orrù and Björn Lindqvist. -- Issue #7736: Release the GIL around calls to opendir() and closedir() - in the posix module. Patch by Marcin Bachry. +- Issue #9753: Fixed socket.dup, which did not always work correctly on Windows. -- Issue #4835: make PyLong_FromSocket_t() and PyLong_AsSocket_t() private - to the socket module, and fix the width of socket descriptors to be - correctly detected under 64-bit Windows. +- Issue #9421: Made the get<type> methods consistently accept the vars and + default arguments on all parser classes. -- Issue #665761: ``functools.reduce()`` will no longer mask exceptions - other than ``TypeError`` raised by the iterator argument. +- Issue #7005: Fixed output of None values for RawConfigParser.write and + ConfigParser.write. -- Issue #9570: Use PEP 383 decoding in os.mknod and os.mkfifo. +- Issue #8990: array.fromstring() and array.tostring() get renamed to + frombytes() and tobytes(), respectively, to avoid confusion. Furthermore, + array.frombytes(), array.extend() as well as the array.array() constructor now + accept bytearray objects. Patch by Thomas Jollans. -- Issue #9324: Add parameter validation to signal.signal on Windows in order - to prevent crashes. +- Issue #808164: Fixed socket.close to avoid references to globals, to avoid + issues when socket.close is called from a __del__ method. -- Issue #9526: Remove some outdated (int) casts that were preventing - the array module from working correctly with arrays of more than - 2**31 elements. +- Issue #9706: ssl module provides a better error handling in various + circumstances. -- Fix memory leak in ssl._ssl._test_decode_cert. +- Issue #1868: Eliminate subtle timing issues in thread-local objects by getting + rid of the cached copy of thread-local attribute dictionary. -- Issue #8065: Fix memory leak in readline module (from failure to - free the result of history_get_history_state()). +- Issue #1512791: In setframerate() in the wave module, non-integral frame rates + are rounded to the nearest integer. -- Issue #9450: Fix memory leak in readline.replace_history_item and - readline.remove_history_item for readline version >= 5.0. +- Issue #8797: urllib2 does a retry for Basic Authentication failure instead of + falling into recursion. -- Issue #8105: Validate file descriptor passed to mmap.mmap on Windows. +- Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four + character years even if the message contains RFC822 two character years. -- Issue #9422: Fix memory leak when re-initializing a struct.Struct object. +- Issue #8750: Fixed MutableSet's methods to correctly handle reflexive + operations on its self, namely x -= x and x ^= x. -- Issue #7900: The getgroups(2) system call on MacOSX behaves rather oddly - compared to other unix systems. In particular, os.getgroups() does - not reflect any changes made using os.setgroups() but basicly always - returns the same information as the id command. +- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing error + handling when accepting a new connection. - os.getgroups() can now return more than 16 groups on MacOSX. +- Issue #9601: ftplib now provides a workaround for non-compliant + implementations such as IIS shipped with Windows server 2003 returning invalid + response codes for MKD and PWD commands. -- Issue #7384: If the system readline library is linked against - ncurses, do not link the readline module against ncursesw. The - additional restriction of linking the readline and curses modules - against the same curses library is currently not enabled. +- Issue #658749: asyncore's connect() method now correctly interprets winsock + errors. -- Issue #8973: Add __all__ to struct module; this ensures that - help(struct) includes documentation for the struct.Struct class. +- Issue #9501: Fixed logging regressions in cleanup code. -- Issue #2810: Fix cases where the Windows registry API returns - ERROR_MORE_DATA, requiring a re-try in order to get the complete result. +- Fix functools.total_ordering() to skip methods inherited from object. -Build ------ +- Issue #9572: Importlib should not raise an exception if a directory it thought + it needed to create was done concurrently by another process. -- Issue #8852: Allow the socket module to build on OpenSolaris. +- Issue #9617: Signals received during a low-level write operation aren't + ignored by the buffered IO layer anymore. -- Issue #10054: Some platforms provide uintptr_t in inttypes.h. Patch by - Akira Kitada. +- Issue #843590: Make "macintosh" an alias to the "mac_roman" encoding. -- Issue #10055: Make json C89-compliant in UCS4 mode. +- Create os.fsdecode(): decode from the filesystem encoding with surrogateescape + error handler, or strict error handler on Windows. -- Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6. +- Issue #3488: Provide convenient shorthand functions ``gzip.compress`` and + ``gzip.decompress``. Original patch by Anand B. Pillai. -- Issue #1633863: Don't ignore $CC under AIX. +- Issue #8807: poplib.POP3_SSL class now accepts a context parameter, which is a + ssl.SSLContext object allowing bundling SSL configuration options, + certificates and private keys into a single (potentially long-lived) + structure. -- Issue #9810: Compile bzip2 source files in python's project file - directly. It used to be built with bzip2's makefile. +- Issue #8866: parameters passed to socket.getaddrinfo can now be specified as + single keyword arguments. -- Issue #941346: Improve the build process under AIX and allow Python to - be built as a shared library. Patch by Sébastien Sablé. +- Address XXX comment in dis.py by having inspect.py prefer to reuse the dis.py + compiler flag values over defining its own. -- Issue #4026: Make the fcntl extension build under AIX. Patch by Sébastien - Sablé. +- Issue #9147: Added dis.code_info() which is similar to show_code() but returns + formatted code information in a string rather than displaying on screen. -- Issue #3101: Helper functions _add_one_to_index_C() and - _add_one_to_index_F() become _Py_add_one_to_index_C() and - _Py_add_one_to_index_F(), respectively. +- Issue #9567: functools.update_wrapper now adds a __wrapped__ attribute + pointing to the original callable. -- Issue #9700: define HAVE_BROKEN_POSIX_SEMAPHORES under AIX 6.x. Patch by - Sébastien Sablé. +- Issue #3445: functools.update_wrapper now tolerates missing attributes on + wrapped callables. -- Issue #3928: os.mknod() now available in Solaris, also. +- Issue #5867: Add abc.abstractclassmethod and abc.abstractstaticmethod. -- Issue #6716: Quote -x arguments of compileall in MSI installer. - Exclude 2to3 tests from compileall. +- Issue #9605: posix.getlogin() decodes the username with file filesystem + encoding and surrogateescape error handler. Patch written by David Watson. -- Issue #1628484: The Makefile doesn't ignore the CFLAGS environment - variable anymore. It also forwards the LDFLAGS settings to the linker - when building a shared library. +- Issue #9604: posix.initgroups() encodes the username using the fileystem + encoding and surrogateescape error handler. Patch written by David Watson. -- Issue #9701: The MacOSX installer can patch the shell profile to ensure that - the "bin" directory inside the framework is on the shell's search path. This - feature now also supports the ZSH shell. +- Issue #9603: posix.ttyname() and posix.ctermid() decode the terminal name + using the filesystem encoding and surrogateescape error handler. Patch written + by David Watson. -- Issue #7473: avoid link errors when building a framework with a different - set of architectures than the one that is currently installed. +- Issue #7647: The posix module now has the ST_RDONLY and ST_NOSUID constants, + for use with the statvfs() function. Patch by Adam Jackson. -Tests ------ +- Issue #8688: MANIFEST files created by distutils now include a magic comment + indicating they are generated. Manually maintained MANIFESTs without this + marker will not be overwritten or removed. -- Issue #3699: Fix test_bigaddrspace and extend it to test bytestrings - as well as unicode strings. Initial patch by Sandro Tosi. +- Issue #7467: when reading a file from a ZIP archive, its CRC is checked and a + BadZipfile error is raised if it doesn't match (as used to be the case in + Python 2.5 and earlier). -- Issue #9628: fix runtests.sh -x option so more than one test can be excluded. +- Issue #9550: a BufferedReader could issue an additional read when the original + read request had been satisfied, which could block indefinitely when the + underlying raw IO channel was e.g. a socket. Report and original patch by + Jason V. Miller. -- Issue #9894: Do not hardcode ENOENT in test_subprocess. +- Issue #3757: thread-local objects now support cyclic garbage collection. + Thread-local objects involved in reference cycles will be deallocated timely + by the cyclic GC, even if the underlying thread is still running. -- Issue #9315: Added tests for the trace module. Patch by Eli Bendersky. +- Issue #9452: Add read_file, read_string, and read_dict to the configparser + API; new source attribute to exceptions. -- Issue #7564: Skip test_ioctl if another process is attached to /dev/tty. +- Issue #6231: Fix xml.etree.ElementInclude to include the tail of the current + node. -- Issue #8857: Provide a test case for socket.getaddrinfo. +- Issue #8047: Fix the xml.etree serializer to return bytes by default. Use + ``encoding="unicode"`` to generate a Unicode string. -- Issue #8433: Fix test_curses failure with newer versions of ncurses. +- Issue #8280: urllib2's Request method will remove fragments in the url. This + is how it is supposed to work, wget and curl do the same. Previous behavior + was wrong. -- Issue #9496: Provide a test suite for the rlcompleter module. Patch by - Michele Orrù. +- Issue #6683: For SMTP logins we now try all authentication methods advertised + by the server. Many servers are buggy and advertise authentication methods + they do not support in reality. -- Issue #9251: test_threaded_import didn't fail when run through regrtest - if the import lock was disabled. +- Issue #8814: function annotations (the ``__annotations__`` attribute) are now + included in the set of attributes copied by default by functools.wraps and + functools.update_wrapper. Patch by Terrence Cole. -- Issue #7449: Skip test_socketserver if threading support is disabled +- Issue #2944: asyncore doesn't handle connection refused correctly. -- Issue #8672: Add a zlib test ensuring that an incomplete stream can be - handled by a decompressor object without errors (it returns incomplete - uncompressed data). +- Issue #4184: Private attributes on smtpd.SMTPChannel made public and deprecate + the private attributes. Add tests for smtpd module. -- Issue #8629: Disable some test_ssl tests, since they give different - results with OpenSSL 1.0.0 and higher. +- Issue #3196: email header decoding is now forgiving if an RFC2047 encoded word + encoded in base64 is lacking padding. -- Issue #8533: regrtest uses backslashreplace error handler for stdout to avoid - UnicodeEncodeError (write non-ASCII character to stdout using ASCII encoding) +- Issue #9444: Argparse now uses the first element of prefix_chars as the option + character for the added 'h/help' option if prefix_chars does not contain a + '-', instead of raising an error. -- Issue #8576: Remove use of find_unused_port() in test_smtplib and - test_multiprocessing. Patch by Paul Moore. +- Issue #7372: Fix pstats regression when stripping paths from profile data + generated with the profile module. -- Issue #8531: Skip test_ascii_formatd if ctypes module is missing +- Issue #9428: Fix running scripts with the profile/cProfile modules from the + command line. -- Issue #3864: Skip three test_signal tests on freebsd6 because they fail - if any thread was previously started, most likely due to a platform bug. +- Issue #7781: Fix restricting stats by entry counts in the pstats interactive + browser. -- Issue #8193: Fix test_zlib failure with zlib 1.2.4. +- Issue #9209: Do not crash in the pstats interactive browser on invalid regular + expressions. -- Issue #9568: Fix test_urllib2_localnet on OS X 10.3. +- Update collections.OrderedDict to match the implementation in Py2.7 (based on + lists instead of weakly referenced Link objects). -Documentation -------------- +- Issue #8397: Raise an error when attempting to mix iteration and regular reads + on a BZ2File object, rather than returning incorrect results. -- Issue #9817: Add expat COPYING file; add expat, libffi and expat licenses - to Doc/license.rst. +- Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when + re-initializing a buffered IO object by calling its ``__init__`` method. -- Issue #9255: Document that the 'test' package is meant for interal Python use - only. +- Issue #1713: Fix os.path.ismount(), which returned true for symbolic links + across devices. + +- Issue #8826: Properly load old-style "expires" attribute in http.cookies. + +- Issue #1690103: Fix initial namespace for code run with trace.main(). + +- Issue #7395: Fix tracebacks in pstats interactive browser. + +- Issue #8230: Fix Lib/test/sortperf.py. + +- Issue #8620: when a cmd.Cmd() is fed input that reaches EOF without a final + newline, it no longer truncates the last character of the last command line. + +- Issue #5146: Handle UID THREAD command correctly in imaplib. + +- Issue #5147: Fix the header generated for cookie files written by + http.cookiejar.MozillaCookieJar. -- Issue #7829: Document in dis that bytecode is an implementation detail. +- Issue #8198: In pydoc, output all help text to the correct stream when + sys.stdout is reassigned. + +- Issue #7909: Do not touch paths with the special prefixes ``\\.\`` or ``\\?\`` + in ntpath.normpath(). + +- Issue #1286: Allow using fileinput.FileInput as a context manager. + +- Add lru_cache() decorator to the functools module. Tools/Demos ----------- -- Issue #7287: Demo/imputil/knee.py was removed. +- Fix ``Tools/scripts/checkpyc.py`` after PEP 3147. +- Issue #8867: Fix ``Tools/scripts/serve.py`` to work with files containing + non-ASCII content. +Tests +----- -What's New in Python 3.1.2? -=========================== +- Issue #9601: Provide a test case for ftplib.parse257. -*Release date: 2010-03-20* +- Issue #8857: Provide a test case for socket.getaddrinfo. -Core and Builtins ------------------ +- Issue #7564: Skip test_ioctl if another process is attached to /dev/tty. -- Issue #7173: Generator finalization could invalidate sys.exc_info(). +- Issue #8433: Fix test_curses failure with newer versions of ncurses. -Library -------- +- Issue #9496: Provide a test suite for the rlcompleter module. Patch by + Michele Orrù. -- Issue #2698: The --compiler ignored was ignored for distutils' build_ext. +- Issue #8687: provide a test suite for sched.py module. -- Issue #4961: Inconsistent/wrong result of askyesno function in tkMessageBox - with Tcl/Tk-8.5. +Build +----- -- Issue #7356: ctypes.util: Make parsing of ldconfig output independent of - the locale. +- Issue #1303434: Generate ZIP file containing all PDBs. +- Issue #9193: PEP 3149 is accepted. -What's New in Python 3.1.2 release candidate 1? -=============================================== +- Issue #3101: Helper functions _add_one_to_index_C() and _add_one_to_index_F() + become _Py_add_one_to_index_C() and _Py_add_one_to_index_F(), respectively. -*Release date: 2010-03-06* +- Issue #9700: define HAVE_BROKEN_POSIX_SEMAPHORES under AIX 6.x. Patch by + Sébastien Sablé. + +- Don't run pgen twice when using make -j. + + +What's New in Python 3.2 Alpha 1? +================================= + +*Release date: 01-Aug-2010* Core and Builtins ----------------- -- Issue #7544: Preallocate thread memory before creating the thread to avoid - a fatal error in low memory condition. +- Issue #8991: convertbuffer() rejects discontigious buffers. + +- Issue #7616: Fix copying of overlapping memoryview slices with the Intel + compiler. + +- Issue #8413: structsequence now subclasses tuple. + +- Issue #8271: during the decoding of an invalid UTF-8 byte sequence, only the + start byte and the continuation byte(s) are now considered invalid, instead of + the number of bytes specified by the start byte. E.g.: + '\xf1\x80AB'.decode('utf-8', 'replace') now returns u'\ufffdAB' and replaces + with U+FFFD only the start byte ('\xf1') and the continuation byte ('\x80') + even if '\xf1' is the start byte of a 4-bytes sequence. Previous versions + returned a single u'\ufffd'. + +- Issue #9011: A negated imaginary literal (e.g., "-7j") now has real part -0.0 + rather than 0.0. So "-7j" is now exactly equivalent to "-(7j)". + +- Be more specific in error messages about positional arguments. + +- Issue #8949: "z" format of PyArg_Parse*() functions doesn't accept bytes + objects, as described in the documentation. + +- Issue #6543: Write the traceback in the terminal encoding instead of utf-8. + Fix the encoding of the modules filename. Patch written by Amaury Forgeot + d'Arc. + +- Issue #9011: Remove buggy and unnecessary (in 3.x) ST->AST compilation code + dealing with unary minus applied to a constant. The removed code was mutating + the ST, causing a second compilation to fail. + +- Issue #850997: mbcs encoding (Windows only) handles errors argument: strict + mode raises unicode errors. The encoder only supports "strict" and "replace" + error handlers, the decoder only supports "strict" and "ignore" error + handlers. Patch written by Mark Hammond. + +- Issue #8850: Remove "w" and "w#" formats from PyArg_Parse*() functions, use + "w*" format instead. Add tests for "w*" format. + +- Issue #8592: PyArg_Parse*() functions raise a TypeError for "y", "u" and "Z" + formats if the string contains a null byte/character. Write unit tests for + string formats. + +- Issue #7490: To facilitate sharing of doctests between 2.x and 3.x test + suites, the IGNORE_EXCEPTION_DETAIL directive now also ignores the module + location of the raised exception. + +- Issue #8969: On Windows, use mbcs codec in strict mode to encode and decode + filenames and enable os.fsencode(). + +- Issue #9058: Remove assertions about INT_MAX in UnicodeDecodeError. + +- Issue #8941: Decoding big endian UTF-32 data in UCS-2 builds could crash the + interpreter with characters outside the Basic Multilingual Plane (higher than + 0x10000). + +- Issue #8950: (See also issue #5080). Py_ArgParse*() functions now raise + TypeError instead of giving a DeprecationWarning when a float is parsed using + the 'L' code (for long long). (All other integer codes already raise + TypeError in this case.) + +- Issue #8922: Normalize the encoding name in PyUnicode_AsEncodedString() to + enable shortcuts for upper case encoding name. Add also a shortcut for + "iso-8859-1" in PyUnicode_AsEncodedString() and PyUnicode_Decode(). + +- Issue #8838: Remove codecs.charbuffer_encode() function. The buffer protocol + doesn't support "char buffer" anymore in Python 3. + +- Issue #8339: Remove "t#" format of PyArg_Parse*() functions, use "s#" or "s*" + instead. codecs.charbuffer_encode() now accepts modifiable buffer objects + like bytearray. + +- Issue #8837: Remove "O?" format of PyArg_Parse*() functions. The format is no + used anymore and it was never documented. + +- In str.format(), raise a ValueError when indexes to arguments are too large. + +- Issue #2844: Make int('42', n) consistently raise ValueError for invalid + integers n (including n = -909). + +- Issue #8188: Introduce a new scheme for computing hashes of numbers (instances + of int, float, complex, decimal.Decimal and fractions.Fraction) that makes it + easy to maintain the invariant that hash(x) == hash(y) whenever x and y have + equal value. + +- Issue #8748: Fix two issues with comparisons between complex and integer + objects. (1) The comparison could incorrectly return True in some cases + (2**53+1 == complex(2**53) == 2**53), breaking transitivity of equality. + (2) The comparison raised an OverflowError for large integers, leading to + unpredictable exceptions when combining integers and complex objects in sets + or dicts. + +- Issue #8766: Initialize _warnings module before importing the first module. + Fix a crash if an empty directory called "encodings" exists in sys.path. + +- Issue #8589: Decode PYTHONWARNINGS environment variable with the file system + encoding and surrogateescape error handler instead of the locale encoding to + be consistent with os.environ. Add PySys_AddWarnOptionUnicode() function. + +- PyObject_Dump() encodes unicode objects to utf8 with backslashreplace (instead + of strict) error handler to escape surrogates. + +- Issue #8715: Create PyUnicode_EncodeFSDefault() function: Encode a Unicode + object to Py_FileSystemDefaultEncoding with the "surrogateescape" error + handler, and return bytes. If Py_FileSystemDefaultEncoding is not set, fall + back to UTF-8. + +- Enable shortcuts for common encodings in PyUnicode_AsEncodedString() for any + error handler, not only the default error handler (strict). + +- Issue #8610: Load file system codec at startup, and display a fatal error on + failure. Set the file system encoding to utf-8 (instead of None) if getting + the locale encoding failed, or if nl_langinfo(CODESET) function is missing. + +- PyFile_FromFd() uses PyUnicode_DecodeFSDefault() instead of + PyUnicode_FromString() to support surrogates in the filename and use the right + encoding. + +- Issue #7507: Quote "!" in pipes.quote(); it is special to some shells. + +- PyUnicode_DecodeFSDefaultAndSize() uses surrogateescape error handler. + +- Issue #8419: Prevent the dict constructor from accepting non-string keyword + arguments. -- Issue #7820: The parser tokenizer restores all bytes in the right if - the BOM check fails. +- Issue #8124: PySys_WriteStdout() and PySys_WriteStderr() don't execute + indirectly Python signal handlers anymore because mywrite() ignores exceptions + (KeyboardInterrupt). + +- Issue #8092: Fix PyUnicode_EncodeUTF8() to support error handler producing + unicode string (eg. backslashreplace). + +- Issue #8485: PyUnicode_FSConverter() doesn't accept byteearray objects + anymore, you have to convert your bytearray filenames to bytes. + +- Issue #7332: Remove the 16KB stack-based buffer in + PyMarshal_ReadLastObjectFromFile, which doesn't bring any noticeable benefit + compared to the dynamic memory allocation fallback. Patch by Charles-François + Natali. + +- Issue #8417: Raise an OverflowError when an integer larger than sys.maxsize is + passed to bytes or bytearray. + +- Issue #7301: Add environment variable $PYTHONWARNINGS. + +- Issue #8329: Don't return the same lists from select.select when no fds are + changed. + +- Issue #8259: 1L << (2**31) no longer produces an 'outrageous shift error' on + 64-bit machines. The shift count for either left or right shift is permitted + to be up to sys.maxsize. + +- Ensure that tokenization of identifiers is not affected by locale. + +- Issue #1222585: Added LDCXXSHARED for C++ support. Patch by Arfrever. + +- Raise a TypeError when trying to delete a T_STRING_INPLACE struct member. + +- Issue #8211: Save/restore CFLAGS around AC_PROG_CC in configure.in, in case it + is set. + +- Issue #8226: sys.setfilesystemencoding() raises a LookupError if the encoding + is unknown. + +- Issue #1583863: A str subclass can now override the __str__ method. + +- Issue #8014: Setting a T_UINT or T_PYSSIZET attribute of an object with + PyMemberDefs could produce an internal error; raise TypeError instead. + +- Issue #7845: Rich comparison methods on the complex type now return + NotImplemented rather than raising a TypeError when comparing with an + incompatible type; this allows user-defined classes to implement their own + comparisons with complex. + +- Issue #3137: Don't ignore errors at startup, especially a keyboard interrupt + (SIGINT). If an error occurs while importing the site module, the error is + printed and Python exits. Initialize the GIL before importing the site module. + +- Issue #7173: Generator finalization could invalidate sys.exc_info(). + +- Issue #7544: Preallocate thread memory before creating the thread to avoid a + fatal error in low memory condition. + +- Issue #7820: The parser tokenizer restores all bytes in the right if the BOM + check fails. - Handle errors from looking up __prepare__ correctly. -- Issue #5939: Add additional runtime checking to ensure a valid capsule - in Modules/_ctypes/callproc.c. +- Issue #5939: Add additional runtime checking to ensure a valid capsule in + Modules/_ctypes/callproc.c. - Issue #7309: Fix unchecked attribute access when converting - UnicodeEncodeError, UnicodeDecodeError, and UnicodeTranslateError to - strings. + UnicodeEncodeError, UnicodeDecodeError, and UnicodeTranslateError to strings. + +- Issue #6902: Fix problem with built-in types format incorrectly with 0 + padding. + +- Issue #7988: Fix default alignment to be right aligned for complex.__format__. + Now it matches other numeric types. -- Issue #6902: Fix problem with built-in types format incorrectly with - 0 padding. +- Issue #5988: Remove deprecated functions PyOS_ascii_formatd, + PyOS_ascii_strtod, and PyOS_ascii_atof. Use PyOS_double_to_string and + PyOS_string_to_double instead. See issue #5835 for the original deprecations. -- Issue #7988: Fix default alignment to be right aligned for - complex.__format__. Now it matches other numeric types. +- Issue #7385: Fix a crash in `MemoryView_FromObject` when `PyObject_GetBuffer` + fails. Patch by Florent Xicluna. -- Issue #7385: Fix a crash in `MemoryView_FromObject` when - `PyObject_GetBuffer` fails. Patch by Florent Xicluna. +- Issue #7788: Fix an interpreter crash produced by deleting a list slice with + very large step value. -- Issue #7788: Fix an interpreter crash produced by deleting a list - slice with very large step value. +- Issue #7766: Change sys.getwindowsversion() return value to a named tuple and + add the additional members returned in an OSVERSIONINFOEX structure. The new + members are service_pack_major, service_pack_minor, suite_mask, and + product_type. -- Issue #7561: Operations on empty bytearrays (such as `int(bytearray())`) - could crash in many places because of the PyByteArray_AS_STRING() macro - returning NULL. The macro now returns a statically allocated empty - string instead. +- Issue #7561: Operations on empty bytearrays (such as `int(bytearray())`) could + crash in many places because of the PyByteArray_AS_STRING() macro returning + NULL. The macro now returns a statically allocated empty string instead. -- Issue #7632: Fix various str -> float conversion bugs present in 2.7 - alpha 2, including: (1) a serious 'wrong output' bug that could - occur for long (> 40 digit) input strings, (2) a crash in dtoa.c - that occurred in debug builds when parsing certain long numeric - strings corresponding to subnormal values, (3) a memory leak for - some values large enough to cause overflow, and (4) a number of - flaws that could lead to incorrectly rounded results. +- Issue #6690: Optimize the bytecode for expressions such as `x in {1, 2, 3}`, + where the right hand operand is a set of constants, by turning the set into a + frozenset and pre-building it as a constant. The comparison operation is made + against the constant instead of building a new set each time it is executed (a + similar optimization already existed which turned a list of constants into a + pre-built tuple). Patch and additional tests by Dave Malcolm. + +- Issue #7622: Improve the split(), rsplit(), splitlines() and replace() methods + of bytes, bytearray and unicode objects by using a common implementation based + on stringlib's fast search. Patch by Florent Xicluna. + +- Issue #7632: Fix various str -> float conversion bugs present in 2.7 alpha 2, + including: (1) a serious 'wrong output' bug that could occur for long (> 40 + digit) input strings, (2) a crash in dtoa.c that occurred in debug builds when + parsing certain long numeric strings corresponding to subnormal values, (3) a + memory leak for some values large enough to cause overflow, and (4) a number + of flaws that could lead to incorrectly rounded results. + +- The __complex__ method is now looked up on the class of instances to make it + consistent with other special methods. + +- Issue #7462: Implement the stringlib fast search algorithm for the `rfind`, + `rindex`, `rsplit` and `rpartition` methods. Patch by Florent Xicluna. - Issue #7604: Deleting an unset slotted attribute did not raise an AttributeError. -- Issue #7466: segmentation fault when the garbage collector is called - in the middle of populating a tuple. Patch by Florent Xicluna. +- Issue #7534: Fix handling of IEEE specials (infinities, nans, negative zero) + in ** operator. The behaviour now conforms to that described in C99 Annex F. + +- Issue #1811: improve accuracy and cross-platform consistency for true division + of integers: the result of a/b is now correctly rounded for ints a and b (at + least on IEEE 754 platforms), and in particular does not depend on the + internal representation of an int. + +- Issue #6834: replace the implementation for the 'python' and 'pythonw' + executables on OSX. + + These executables now work properly with the arch(1) command: ``arch -ppc + python`` will start a universal binary version of python in PPC mode (unlike + previous releases). + +- Issue #7466: Segmentation fault when the garbage collector is called in the + middle of populating a tuple. Patch by Florent Xicluna. - Issue #7419: setlocale() could crash the interpreter on Windows when called with invalid values. @@ -1215,65 +2465,776 @@ Core and Builtins - Issue #6077: On Windows, files opened with tempfile.TemporaryFile in "wt+" mode would appear truncated on the first '0x1a' byte (aka. Ctrl+Z). -- Issue #7085: Fix crash when importing some extensions in a thread - on MacOSX 10.6. +- Issue #7085: Fix crash when importing some extensions in a thread on MacOSX + 10.6. + +- Issue #1757126: Fix the cyrillic-asian alias for the ptcp154 encoding. -- Issue #7298: fixes for range and reversed(range(...)). Iteration - over range(a, b, c) incorrectly gave an empty iterator when a, b and - c fit in C long but the length of the range did not. Also fix - several cases where reversed(range(a, b, c)) gave wrong results, and - fix a refleak for reversed(range(a, b, c)) with large arguments. +- Issue #6970: Remove redundant calls when comparing objects that don't + implement the relevant rich comparison methods. -- Issue #7244: itertools.izip_longest() no longer ignores exceptions - raised during the formation of an output tuple. +- Issue #7298: Fixes for range and reversed(range(...)). Iteration over + range(a, b, c) incorrectly gave an empty iterator when a, b and c fit in C + long but the length of the range did not. Also fix several cases where + reversed(range(a, b, c)) gave wrong results, and fix a refleak for + reversed(range(a, b, c)) with large arguments. + +- Issue #7244: itertools.izip_longest() no longer ignores exceptions raised + during the formation of an output tuple. - Issue #3297: On wide unicode builds, do not split unicode characters into surrogates. +- Remove length limitation when constructing a complex number from a string. + +- Issue #1087418: Boost performance of bitwise operations for longs. + +- Support for AtheOS has been completely removed from the code base. It was + disabled since Python 3.0. + +- Support for several legacy threading libraries has been disabled. These + libraries are: Mach C threads, SunOS LWP, GNU pth, Irix threads. Support code + will be entirely removed in 3.3. + +- Support for OSF* has been disabled. If nobody stands up, support will be + removed in 3.3. See <http://bugs.python.org/issue8606>. + +- Peephole constant folding had missed UNARY_POSITIVE. + - Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which fixes the problem of some exceptions being thrown at shutdown when the interpreter is killed. Patch by Adam Olsen. -- Issue #7065: Fix a crash in bytes.maketrans and bytearray.maketrans when - using byte values greater than 127. Patch by Derk Drukker. +- Issue #7147: Remove support for compiling Python without complex number + support. + +- Issue #7120: logging: Removed import of multiprocessing which is causing crash + in GAE. + +- Issue #1754094: Improve the stack depth calculation in the compiler. There + should be no other effect than a small decrease in memory use. Patch by + Christopher Tur Lesniewski-Laas. -- Issue #7019: Raise ValueError when unmarshalling bad long data, instead - of producing internally inconsistent Python longs. +- Issue #7065: Fix a crash in bytes.maketrans and bytearray.maketrans when using + byte values greater than 127. Patch by Derk Drukker. -- Issue #6990: Fix threading.local subclasses leaving old state around - after a reference cycle GC which could be recycled by new locals. +- Issue #1571184: The Unicode database contains properties for more characters. + The tables for code points representing numeric values, white spaces or line + breaks are now generated from the official Unicode Character Database files, + and include information from the Unihan.txt file. + +- Issue #7019: Raise ValueError when unmarshalling bad long data, instead of + producing internally inconsistent Python longs. + +- Issue #6990: Fix threading.local subclasses leaving old state around after a + reference cycle GC which could be recycled by new locals. + +- Issue #5460: Fix an ambiguity in the grammar. + +- Issue #1766304: Improve performance of membership tests on range objects. + +- Issue #6713: Improve performance of integer -> string conversions. - Issue #6846: Fix bug where bytearray.pop() returns negative integers. -- Issue #6750: A text file opened with io.open() could duplicate its output - when writing from multiple threads at the same time. +- Issue #6750: A text file opened with io.open() could duplicate its output when + writing from multiple threads at the same time. + +- Issue #6707: dir() on an uninitialized module caused a crash. + +- Issue #6540: Fixed crash for bytearray.translate() with invalid parameters. + +- Issue #6573: set.union() stopped processing inputs if an instance of self + occurred in the argument chain. + +- Issue #6070: On posix platforms import no longer copies the execute bit from + the .py file to the .pyc file if it is set. + +- Issue #1616979: Added the cp720 (Arabic DOS) encoding. + +- Issue #6428: Since Python 3.0, the __bool__ method must return a bool object, + and not an int. Fix the corresponding error message, and the documentation. + +- The deprecated PyCObject has been removed. + +- Issue #6347: Include inttypes.h as well as stdint.h in pyport.h. This fixes a + build failure on HP-UX: int32_t and uint32_t are defined in inttypes.h instead + of stdint.h on that platform. + +- Issue #6373: Fixed a SystemError when encoding with the latin-1 codec and the + 'surrogateescape' error handler, a string which contains unpaired surrogates. + +- Issue #4856: Remove checks for win NT. + +- Issue #6687: PyBytes_FromObject() no longer accepts an integer as its argument + to construct a null-initialized bytes object. + +- Issue #1023290: Add from_bytes() and to_bytes() methods to integers. These + methods allow the conversion of integers to bytes, and vice-versa. + +- Issue #7382: Fix bug in bytes.__getnewargs__ that prevented bytes instances + from being copied with copy.copy(), and bytes subclasses from being pickled + properly. + +- Code objects now support weak references. + +- Issue #7072: isspace(0xa0) is true on Mac OS X. + +- Issue #8084: PEP 370 now conforms to system conventions for framework builds + on MacOS X. That is, "python setup.py install --user" will install into + "~/Library/Python/2.7" instead of "~/.local". + +C-API +----- + +- Issue #2443: A new macro, `Py_VA_COPY`, copies the state of the + variable argument list. `Py_VA_COPY` is equivalent to C99 + `va_copy`, but available on all python platforms. + +- PySlice_GetIndicesEx now clips the step to [-PY_SSIZE_T_MAX, PY_SSIZE_T_MAX] + instead of [-PY_SSIZE_T_MAX-1, PY_SSIZE_T_MAX]. This makes it safe to do + "step = -step" when reversing a slice. + +- Issue #5753: A new C API function, `PySys_SetArgvEx`, allows embedders of the + interpreter to set sys.argv without also modifying sys.path. This helps fix + `CVE-2008-5983 + <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5983>`_. + +- Add PyArg_ValidateKeywordArguments, which checks if all keyword arguments are + strings in an efficient manner. + +- Issue #8276: PyEval_CallObject() is now only available in macro form. The + function declaration, which was kept for backwards compatibility reasons, is + now removed (the macro was introduced in 1997!). + +- Issue #7767: New function PyLong_AsLongLongAndOverflow added, analogous to + PyLong_AsLongAndOverflow. + +- Make PyUnicode_CompareWithASCIIString return not equal if the Python string + has '\0' at the end. + +- Issue #5080: The argument parsing functions PyArg_ParseTuple, + PyArg_ParseTupleAndKeywords, PyArg_VaParse, PyArg_VaParseTupleAndKeywords and + PyArg_Parse now raise a DeprecationWarning for float arguments passed with the + 'L' format code. This will become a TypeError in a future version of Python, + to match the behaviour of the other integer format codes. + +- Issue #7033: Function ``PyErr_NewExceptionWithDoc()`` added. + +- Issue #7414: 'C' code wasn't being skipped properly (for keyword arguments) in + PyArg_ParseTupleAndKeywords. + +- Issue #7228: Add '%lld' and '%llu' support to PyString_FromFormat(V) and + PyErr_Format, on machines with HAVE_LONG_LONG defined. + +- Issue #6151: Made PyDescr_COMMON conform to standard C (like PyObject_HEAD in + PEP 3123). The PyDescr_TYPE and PyDescr_NAME macros should be should used for + accessing the d_type and d_name members of structures using PyDescr_COMMON. + +- Issue #6405: Remove duplicate type declarations in descrobject.h. + +- The code flags for old __future__ features are now available again. + +- Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of + PyCode_Addr2Line(). + +- Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code + object at a specified file, function, and line number. + +- Issue #1419652: Change the first argument to PyImport_AppendInittab() to + ``const char *`` as the string is stored beyond the call. + +- Issue #2422: When compiled with the ``--with-valgrind`` option, the pymalloc + allocator will be automatically disabled when running under Valgrind. This + gives improved memory leak detection when running under Valgrind, while taking + advantage of pymalloc at other times. Library ------- -- Issue #7154: urllib.request can now detect the proxy settings on OSX 10.6 - (as long as the user didn't specify 'automatic proxy configuration'). +- In pdb, when Ctrl-C is entered while defining commands for a breakpoint, the + old commands are restored. + +- For traceback debugging, the pdb listing now also shows the locations where + the exception was originally (re)raised, if it differs from the last line + executed (e.g. in case of finally clauses). + +- The pdb command "source" has been added. It displays the source code for a + given object, if possible. + +- The pdb command "longlist" has been added. It displays the whole source code + for the current function. + +- Issue #1503502: Make pdb.Pdb easier to subclass by putting message and error + output into methods. + +- Issue #809887: Make the output of pdb's breakpoint deletions more consistent; + emit a message when a breakpoint is enabled or disabled. + +- Issue #5294: Fix the behavior of pdb's "continue" command when called in the + top-level debugged frame. + +- Issue #5727: Restore the ability to use readline when calling into pdb in + doctests. + +- Issue #6719: In pdb, do not stop somewhere in the encodings machinery if the + source file to be debugged is in a non-builtin encoding. + +- Issue #8048: Prevent doctests from failing when sys.displayhook has been + reassigned. + +- Issue #8015: In pdb, do not crash when an empty line is entered as a + breakpoint command. + +- In pdb, allow giving a line number to the "until" command. + +- Issue #1437051: For pdb, allow "continue" and related commands in .pdbrc + files. Also, add a command-line option "-c" that runs a command as if given + in .pdbrc. + +- Issue #4179: In pdb, allow "list ." as a command to return to the currently + debugged line. + +- Issue #4108: In urllib.robotparser, if there are multiple ``User-agent: *`` + entries, consider the first one. + +- Issue #6630: Allow customizing regex flags when subclassing the + string.Template class. + +- Issue #9411: Allow specifying an encoding for config files in the configparser + module. + +- Issue #1682942: Improvements to configparser: support alternate delimiters, + alternate comment prefixes and empty lines in values. + +- Issue #9354: Provide getsockopt() in asyncore's file_wrapper. + +- Issue #8966: ctypes: Remove implicit bytes-unicode conversion. + +- Issue #9378: python -m pickle <pickle file> will now load and display the + first object in the pickle file. + +- Issue #4770: Restrict binascii module to accept only bytes (as specified). + And fix the email package to encode to ASCII instead of ``raw-unicode-escape`` + before ASCII-to-binary decoding. + +- Issue #9384: ``python -m tkinter`` will now display a simple demo applet. + +- The default size of the re module's compiled regular expression cache has been + increased from 100 to 500 and the cache replacement policy has changed from + simply clearing the entire cache on overflow to forgetting the least recently + used cached compiled regular expressions. This is a performance win for + applications that use a lot of regular expressions and limits the impact of + the performance hit anytime the cache is exceeded. + +- Issue #7113: Speed up loading in configparser. Patch by Łukasz Langa. + +- Issue #9032: XML-RPC client retries the request on EPIPE error. The EPIPE + error occurs when the server closes the socket and the client sends a big + XML-RPC request. + +- Issue #4629: getopt raises an error if an argument ends with "=", whereas + getopt doesn't accept a value (eg. --help= is rejected if getopt uses + ['help='] long options). + +- Issue #7989: Added pure python implementation of the `datetime` module. The C + module is renamed to `_datetime` and if available, overrides all classes + defined in datetime with fast C impementation. Python implementation is based + on the original python prototype for the datetime module by Tim Peters with + minor modifications by the PyPy project. The test suite now tests `datetime` + module with and without `_datetime` acceleration using the same test cases. + +- Issue #7895: platform.mac_ver() no longer crashes after calling os.fork(). + +- Issue #9323: Fixed a bug in trace.py that resulted in loosing the name of the + script being traced. Patch by Eli Bendersky. + +- Issue #9282: Fixed --listfuncs option of trace.py. Thanks Eli Bendersky for + the patch. + +- Issue #3704: http.cookiejar was not properly handling URLs with a / in the + parameters. + +- Issue #9268: ``pickletools.dis()`` now has an optional *annotate* argument + which controls printing of opcode descriptions in ``dis()`` output. + +- Issue #1555570: email no longer inserts extra blank lines when a \r\n combo + crosses an 8192 byte boundary. + +- Issue #9243: Fix sndhdr module and add unit tests, contributed by James Lee. + +- ``ast.literal_eval()`` now allows byte literals. + +- Issue #9137: Fix issue in MutableMapping.update, which incorrectly treated + keyword arguments called 'self' or 'other' specially. + +- ``ast.literal_eval()`` now allows set literals. + +- Issue #9164: Ensure that sysconfig handles duplicate -arch flags in CFLAGS. + +- Issue #7646: The fnmatch pattern cache no longer grows without bound. + +- Issue #9136: Fix 'dictionary changed size during iteration' RuntimeError + produced when profiling the decimal module. This was due to a dangerous + iteration over 'locals()' in Context.__init__. + +- Fix extreme speed issue in Decimal.pow when the base is an exact power of 10 + and the exponent is tiny (for example, ``Decimal(10) ** + Decimal('1e-999999999')``). + +- Issue #9186: Fix math.log1p(-1.0) to raise ValueError, not OverflowError. + +- Issue #9130: Fix validation of relative imports in parser module. + +- Issue #9128: Fix validation of class decorators in parser module. + +- Issue #9094: python -m pickletools will now disassemble pickle files listed in + the command line arguments. See output of python -m pickletools -h for more + details. + +- Issue #5468: urlencode to handle bytes type and other encodings in its query + parameter. Patch by Dan Mahn. + +- Issue #7673: Fix security vulnerability (CVE-2010-2089) in the audioop module, + ensure that the input string length is a multiple of the frame size. + +- Issue #6507: Accept source strings in dis.dis(). Original patch by Daniel + Urban. + +- Issue #7829: Clearly document that the dis module is exposing an + implementation detail that is not stable between Python VMs or releases. + +- Issue #6589: cleanup asyncore.socket_map in case smtpd.SMTPServer constructor + raises an exception. + +- Issue #9110: Addition of ContextDecorator to contextlib, for creating APIs + that act as both context managers and decorators. contextmanager changes to + use ContextDecorator. + +- Implement importlib.abc.SourceLoader and deprecate PyLoader and PyPycLoader + for removal in Python 3.4. + +- Issue #9064: pdb's "up" and "down" commands now accept an optional argument + giving the number of frames to go. + +- Issue #9018: os.path.normcase() now raises a TypeError if the argument is not + ``str`` or ``bytes``. + +- Issue #9075: In the ssl module, remove the setting of a ``debug`` flag on an + OpenSSL structure. + +- Issue #8682: The ssl module now temporary increments the reference count of a + socket object got through ``PyWeakref_GetObject``, so as to avoid possible + deallocation while the object is still being used. + +- Issue #1368368: FancyURLOpener class changed to throw an Exception on wrong + password instead of presenting an interactive prompt. Older behavior can be + obtained by passing retry=True to http_error_xxx methods of FancyURLOpener. + +- Issue #8720: Fix regression caused by fix for #4050 by making getsourcefile + smart enough to find source files in the linecache. + +- Issue #5610: feedparser no longer eats extra characters at the end of a body + part if the body part ends with a ``\r\n``. + +- Issue #8986: math.erfc was incorrectly raising OverflowError for values + between -27.3 and -30.0 on some platforms. + +- Issue #8784: Set tarfile default encoding to 'utf-8' on Windows. + +- Issue #8966: If a ctypes structure field is an array of c_char, convert its + value to bytes instead of str (as done for c_char and c_char_p). + +- Issue #8188: Comparisons between Decimal and Fraction objects are now + permitted, returning a result based on the exact numerical values of the + operands. This builds on issue #2531, which allowed Decimal-to-float + comparisons; all comparisons involving numeric types (bool, int, float, + complex, Decimal, Fraction) should now act as expected. + +- Issue #8897: Fix sunau module, use bytes to write the header. Patch written by + Thomas Jollans. + +- Issue #8899: time.struct_time now has class and attribute docstrings. + +- Issue #6470: Drop UNC prefix in FixTk. + +- Issue #4768: base64 encoded email body parts were incorrectly stored as binary + strings. They are now correctly converted to strings. + +- Issue #8833: tarfile created hard link entries with a size field != 0 by + mistake. + +- Charset.body_encode now correctly handles base64 encoding by encoding with the + output_charset before calling base64mime.encode. Passes the tests from 2.x + issue #1368247. + +- Issue #8845: sqlite3 Connection objects now have a read-only in_transaction + attribute that is True iff there are uncommitted changes. + +- Issue #1289118: datetime.timedelta objects can now be multiplied by float and + divided by float and int objects. Results are rounded to the nearest multiple + of timedelta.resolution with ties resolved using round-half-to-even method. + +- Issue #7150: Raise OverflowError if the result of adding or subtracting + timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range. + +- Issue #8806: add SSL contexts support to ftplib. + +- Issue #4769: Fix main() function of the base64 module, use sys.stdin.buffer + and sys.stdout.buffer (instead of sys.stdin and sys.stdout) to use the bytes + API. + +- Issue #8770: Now sysconfig displays information when it's called as a script. + Initial idea by Sridhar Ratnakumar. + +- Issue #6662: Fix parsing of malformatted charref (&#bad;), patch written by + Fredrik Håård. + +- Issue #8540: Decimal module: rename the Context._clamp attribute to + Context.clamp and make it public. This is useful in creating contexts that + correspond to the decimal interchange formats specified in IEEE 754. + +- Issue #6268: Fix seek() method of codecs.open(), don't read or write the BOM + twice after seek(0). Fix also reset() method of codecs, UTF-16, UTF-32 and + StreamWriter classes. + +- Issue #3798: sys.exit(message) writes the message to sys.stderr file, instead + of the C file stderr, to use stderr encoding and error handler. + +- Issue #8782: Add a trailing newline in linecache.updatecache to the last line + of files without one. + +- Issue #8729: Return NotImplemented from collections.Mapping.__eq__ when + comparing to a non-mapping. + +- Issue #8774: tabnanny uses the encoding cookie (#coding:...) to use the + correct encoding. + +- Issue #4870: Add an `options` attribute to SSL contexts, as well as several + ``OP_*`` constants to the `ssl` module. This allows to selectively disable + protocol versions, when used in combination with `PROTOCOL_SSLv23`. + +- Issue #8759: Fixed user paths in sysconfig for posix and os2 schemes. + +- Issue #8663: distutils.log emulates backslashreplace error handler. Fix + compilation in a non-ASCII directory if stdout encoding is ASCII (eg. if + stdout is not a TTY). + +- Issue #8513: os.get_exec_path() supports b'PATH' key and bytes value. + subprocess.Popen() and os._execvpe() support bytes program name. Add + os.supports_bytes_environ flag: True if the native OS type of the environment + is bytes (eg. False on Windows). + +- Issue #8633: tarfile is now able to read and write archives with "raw" binary + pax headers as described in POSIX.1-2008. + +- Issue #1285086: Speed up urllib.parse functions: quote, quote_from_bytes, + unquote, unquote_to_bytes. + +- Issue #8688: Distutils now recalculates MANIFEST everytime. + +- Issue #8477: ssl.RAND_egd() and ssl._test_decode_cert() support str with + surrogates and bytes for the filename. + +- Issue #8550: Add first class ``SSLContext`` objects to the ssl module. + +- Issue #8681: Make the zlib module's error messages more informative when the + zlib itself doesn't give any detailed explanation. + +- The audioop module now supports sound fragments of length greater than 2**31 + bytes on 64-bit machines, and is PY_SSIZE_T_CLEAN. + +- Issue #4972: Add support for the context manager protocol to the ftplib.FTP + class. + +- Issue #8664: In py_compile, create __pycache__ when the compiled path is + given. + +- Issue #8514: Add os.fsencode() function (Unix only): encode a string to bytes + for use in the file system, environment variables or the command line. + +- Issue #8571: Fix an internal error when compressing or decompressing a chunk + larger than 1GB with the zlib module's compressor and decompressor objects. + +- Issue #8603: Support bytes environmental variables on Unix: Add os.environb + mapping and os.getenvb() function. os.unsetenv() encodes str argument to the + file system encoding with the surrogateescape error handler (instead of + utf8/strict) and accepts bytes. posix.environ keys and values are now bytes. + +- Issue #8573: asyncore _strerror() function might throw ValueError. + +- Issue #8483: asyncore.dispatcher's __getattr__ method produced confusing error + messages when accessing undefined class attributes because of the cheap + inheritance with the underlying socket object. The cheap inheritance has been + deprecated. + +- Issue #4265: shutil.copyfile() was leaking file descriptors when disk fills. + Patch by Tres Seaver. + +- Issue #8390: tarfile uses surrogateescape as the default error handler + (instead of replace in read mode or strict in write mode). + +- Issue #7755: Use an unencumbered audio file for tests. + +- Issue #8621: uuid.uuid4() returned the same sequence of values in the parent + and any children created using ``os.fork`` on MacOS X 10.6. + +- Issue #8567: Fix precedence of signals in Decimal module: when a Decimal + operation raises multiple signals and more than one of those signals is + trapped, the specification determines the order in which the signals should be + handled. In many cases this order wasn't being followed, leading to the wrong + Python exception being raised. + +- Issue #7865: The close() method of :mod:`io` objects should not swallow + exceptions raised by the implicit flush(). Also qensure that calling close() + several times is supported. Patch by Pascal Chambon. + +- Issue #4687: Fix accuracy of garbage collection runtimes displayed with + gc.DEBUG_STATS. + +- Issue #8354: The siginterrupt setting is now preserved for all signals, not + just SIGCHLD. + +- Issue #7192: webbrowser.get("firefox") now works on Mac OS X, as does + webbrowser.get("safari"). + +- Issue #8464: tarfile no longer creates files with execute permissions set when + mode="w|" is used. + +- Issue #7834: Fix connect() of Bluetooth L2CAP sockets with recent versions of + the Linux kernel. Patch by Yaniv Aknin. + +- Issue #8295: Added shutil.unpack_archive. + +- Issue #6312: Fixed http HEAD request when the transfer encoding is chunked. + It should correctly return an empty response now. + +- Issue #8546: Reject None given as the buffering argument to _pyio.open. + +- Issue #8549: Fix compiling the _ssl extension under AIX. Patch by + Sridhar Ratnakumar. + +- Issue #6656: fix locale.format_string to handle escaped percents + and mappings. + +- Issue #2302: Fix a race condition in SocketServer.BaseServer.shutdown, where + the method could block indefinitely if called just before the event loop + started running. This also fixes the occasional freezes witnessed in + test_httpservers. + +- Issue #8524: When creating an SSL socket, the timeout value of the original + socket wasn't retained (instead, a socket with a positive timeout would be + turned into a non-blocking SSL socket). + +- Issue #5103: SSL handshake would ignore the socket timeout and block + indefinitely if the other end didn't respond. + +- The do_handshake() method of SSL objects now adjusts the blocking mode of the + SSL structure if necessary (as other methods already do). + +- Issue #8391: os.execvpe() and os.getenv() supports unicode with surrogates and + bytes strings for environment keys and values. + +- Issue #8467: Pure Python implementation of subprocess encodes the error + message using surrogatepass error handler to support surrogates in the + message. + +- Issue #8468: bz2.BZ2File() accepts str with surrogates and bytes filenames. + +- Issue #8451: Syslog module now uses basename(sys.argv[0]) instead of the + string "python" as the *ident*. openlog() arguments are all optional and + keywords. + +- Issue #8108: Fix the unwrap() method of SSL objects when the socket has a + non-infinite timeout. Also make that method friendlier with applications + wanting to continue using the socket in clear-text mode, by disabling + OpenSSL's internal readahead. Thanks to Darryl Miles for guidance. + +- Issue #8496: make mailcap.lookup() always return a list, rather than an + iterator. Patch by Gregory Nofi. + +- Issue #8195: Fix a crash in sqlite Connection.create_collation() if the + collation name contains a surrogate character. + +- Issue #8484: Load all ciphers and digest algorithms when initializing the _ssl + extension, such that verification of some SSL certificates doesn't fail + because of an "unknown algorithm". + +- Issue #6547: Added the ignore_dangling_symlinks option to shutil.copytree. + +- Issue #1540112: Now allowing the choice of a copy function in shutil.copytree. + +- Issue #4814: timeout parameter is now applied also for connections resulting + from PORT/EPRT commands. + +- Issue #8463: added missing reference to bztar in shutil's documentation. + +- Issue #7154: urllib.request can now detect the proxy settings on OSX 10.6 (as + long as the user didn't specify 'automatic proxy configuration'). -- Issue #8412: os.system() now accepts bytes, bytearray and str with +- Issue #3817: ftplib.FTP.abort() method now considers 225 a valid response code + as stated in RFC-959 at chapter 5.4. + +- Issue #8394: _ctypes.dlopen() accepts bytes, bytearray and str with surrogates. +- Issue #850728: Add a *timeout* parameter to the `acquire()` method of + `threading.Semaphore` objects. Original patch by Torsten Landschoff. + +- Issue #8322: Add a *ciphers* argument to SSL sockets, so as to change the + available cipher list. Helps fix test_ssl with OpenSSL 1.0.0. + +- Issue #8393: subprocess accepts bytes, bytearray and str with surrogates for + the current working directory. + +- Issue #7606: XML-RPC traceback stored in X-traceback is now encoded to ASCII + using backslashreplace error handler. + +- Issue #8412: os.system() now accepts bytes, bytearray and str with surrogates. + +- Issue #2987: RFC2732 support for urlparse (IPv6 addresses). Patch by Tony + Locke and Hans Ulrich Niedermann. + +- Issue #5277: Fix quote counting when parsing RFC 2231 encoded parameters. + +- Issue #7316: The acquire() method of lock objects in the :mod:`threading` + module now takes an optional timeout argument in seconds. Timeout support + relies on the system threading library, so as to avoid a semi-busy wait loop. + +- Issue #8383: pickle and pickletools use surrogatepass error handler when + encoding unicode as utf8 to support lone surrogates and stay compatible with + Python 2.x and 3.x. + +- Issue #7585: difflib context and unified diffs now place a tab between + filename and date, conforming to the 'standards' they were originally designed + to follow. This improves compatibility with patch tools. + +- Issue #7472: Fixed typo in email.encoders module; messages using ISO-2022 + character sets will now consistently use a Content-Transfer-Encoding of 7bit + rather than sometimes being marked as 8bit. + +- Issue #8375: test_distutils now checks if the temporary directory are still + present before it cleans them. + +- Issue #8374: Update the internal alias table in the :mod:`locale` module to + cover recent locale changes and additions. + +- Issue #8321: Give access to OpenSSL version numbers from the `ssl` module, + using the new attributes `ssl.OPENSSL_VERSION`, `ssl.OPENSSL_VERSION_INFO` and + `ssl.OPENSSL_VERSION_NUMBER`. + +- Add functools.total_ordering() and functools.cmp_to_key(). + +- Issue #8257: The Decimal construct now accepts a float instance directly, + converting that float to a Decimal of equal value: + + >>> Decimal(1.1) + Decimal('1.100000000000000088817841970012523233890533447265625') + +- Issue #8294: The Fraction constructor now accepts Decimal and float instances + directly. + +- Issue #7279: Comparisons involving a Decimal signaling NaN now signal + InvalidOperation instead of returning False. (Comparisons involving a quiet + NaN are unchanged.) Also, Decimal quiet NaNs are now hashable; Decimal + signaling NaNs remain unhashable. + +- Issue #2531: Comparison operations between floats and Decimal instances now + return a result based on the numeric values of the operands; previously they + returned an arbitrary result based on the relative ordering of id(float) and + id(Decimal). See also issue #8188, which adds Decimal-to-Fraction + comparisons. + +- Added a subtract() method to collections.Counter(). + +- Issue #8233: When run as a script, py_compile.py optionally takes a single + argument `-` which tells it to read files to compile from stdin. Each line is + read on demand and the named file is compiled immediately. (Original patch by + Piotr Ożarowski). + +- Backwards incompatible change: Unicode codepoints line tabulation (0x0B) and + form feed (0x0C) are now considered linebreaks, as specified in Unicode + Standard Annex #14. See issue #7643. http://www.unicode.org/reports/tr14/ + +- Comparisons using one of <, <=, >, >= between a complex instance and a + Fractions instance now raise TypeError instead of returning True/False. This + makes Fraction <=> complex comparisons consistent with int <=> complex, float + <=> complex, and complex <=> complex comparisons. + +- Issue #8139: ossaudiodev didn't initialize its types properly, therefore some + methods (such as oss_mixer_device.fileno()) were not available. Initial patch + by Bertrand Janin. + +- Issue #8205: Remove the "Modules" directory from sys.path when Python is + running from the build directory (POSIX only). + +- Issue #7512: shutil.copystat() could raise an OSError when the filesystem + didn't support chflags() (for example ZFS under FreeBSD). The error is now + silenced. + +- Issue #7860: platform.uname now reports the correct 'machine' type when Python + is running in WOW64 mode on 64 bit Windows. + +- Issue #3890, #8222: Fix recv() and recv_into() on non-blocking SSL sockets. + Also, enable the SSL_MODE_AUTO_RETRY flag on SSL sockets, so that blocking + reads and writes are always retried by OpenSSL itself. + - Issue #4282: Fix the main function of the profile module for a non-ASCII script, open the file in binary mode and not in text mode with the default (utf8) encoding. +- Issue #8179: Fix macpath.realpath() on a non-existing path. + +- Issue #8024: Update the Unicode database to 5.2. + +- Issue #8168: py_compile now handles files with utf-8 BOMS. + +- ``tokenize.detect_encoding`` now returns ``'utf-8-sig'`` when a UTF-8 BOM is + detected. + +- Issue #6716/2: Backslash-replace error output in compilall. + +- Issue #4961: Inconsistent/wrong result of askyesno function in tkMessageBox + with Tcl/Tk-8.5. + +- Issue #8140: extend compileall to compile single files. Add -i option. + +- Issue #7356: ctypes.util: Make parsing of ldconfig output independent of the + locale. + +- The internals of the subprocess module on POSIX systems have been replaced by + an extension module (_posixsubprocess) so that the fork()+exec() can be done + safely without the possibility of deadlock in multithreaded applications. + +- subprocess.Popen now has restore_signals and start_new_session features. The + default of restore_signals=True is a new behavior compared to earlier Python + versions. This means that signals such as SIGPIPE are not ignored by default + in subprocesses launched by Python (Issue #1652). + +- Issue #6472: The xml.etree package is updated to ElementTree 1.3. The + cElementTree module is updated too. + - Issue #7774: Set sys.executable to an empty string if argv[0] has been set to - an non existent program name and Python is unable to retrieve the real - program name + an non existent program name and Python is unable to retrieve the real program + name. + +- Issue #7880: Fix sysconfig when the python executable is a symbolic link. -- Issue #6509: fix re.sub to work properly when the pattern, the string, and - the replacement were all bytes. Patch by Antoine Pitrou. +- Issue #6509: fix re.sub to work properly when the pattern, the string, and the + replacement were all bytes. Patch by Antoine Pitrou. -- Issue #1054943: Fix unicodedata.normalize('NFC', text) for the Public Review - Issue #29 +- The sqlite3 module was updated to pysqlite 2.6.0. This fixes several obscure + bugs and allows loading SQLite extensions from shared libraries. + +- Issue #1054943: Fix ``unicodedata.normalize('NFC', text)`` for the Public + Review Issue #29 (http://unicode.org/review/pr-29.html). - Issue #7494: fix a crash in _lsprof (cProfile) after clearing the profiler, reset also the pointer to the current pointer context. +- Issue #7232: Add support for the context manager protocol to the TarFile + class. + - Issue #7250: Fix info leak of os.environ across multi-run uses of wsgiref.handlers.CGIHandler. @@ -1282,59 +3243,101 @@ Library - Issue #691291: codecs.open() should not convert end of lines on reading and writing. -- Issue #7959: ctypes callback functions are now registered correctly - with the cycle garbage collector. +- Issue #7869: logging: improved diagnostic for format-time errors. + +- Issue #7868: logging: added loggerClass attribute to Manager. + +- logging: Implemented PEP 391. + +- Issue #1537721: Add a writeheader() method to csv.DictWriter. -- Issue #6666: fix bug in trace.py that applied the list of directories - to be ignored only to the first file. Noted by Bogdan Opanchuk. +- Issue #7959: ctypes callback functions are now registered correctly with the + cycle garbage collector. -- Issue #7597: curses.use_env() can now be called before initscr(). - Noted by Kan-Ru Chen. +- Issue #5801: removed spurious empty lines in wsgiref. + +- Issue #6666: fix bug in trace.py that applied the list of directories to be + ignored only to the first file. Noted by Bogdan Opanchuk. + +- Issue #7597: curses.use_env() can now be called before initscr(). Noted by + Kan-Ru Chen. - Issue #7310: fix the __repr__ of os.environ to show the environment variables. - Issue #7970: email.Generator.flatten now correctly flattens message/rfc822 messages parsed by email.Parser.HeaderParser. -- Issue #7361: Importlib was not handling bytecode files less than 8 bytes in - length properly. +- Issue #7361: Importlib was not properly checking the number of bytes in + bytecode file when it was less then 8 bytes. + +- Issue #7633: In the decimal module, Context class methods (with the exception + of canonical and is_canonical) now accept instances of int and long wherever a + Decimal instance is accepted, and implicitly convert that argument to Decimal. + Previously only some arguments were converted. - Issue #7835: shelve should no longer produce mysterious warnings during interpreter shutdown. -- Issue #6233: ElementTree failed converting unicode characters to XML - entities when they could't be represented in the requested output - encoding. Patch by Jerry Chen. +- Issue #2746: Don't escape ampersands and angle brackets ("&", "<", ">") in XML + processing instructions and comments. These raw characters are allowed by the + XML specification, and are necessary when outputting e.g. PHP code in a + processing instruction. Patch by Neil Muller. + +- Issue #6233: ElementTree failed converting unicode characters to XML entities + when they could't be represented in the requested output encoding. Patch by + Jerry Chen. + +- Issue #6003: add an argument to ``zipfile.Zipfile.writestr`` to specify the + compression type. - Issue #4772: Raise a ValueError when an unknown Bluetooth protocol is specified, rather than fall through to AF_PACKET (in the `socket` module). - Also, raise ValueError rather than TypeError when an unknown TIPC address - type is specified. Patch by Brian Curtin. + Also, raise ValueError rather than TypeError when an unknown TIPC address type + is specified. Patch by Brian Curtin. -- Issue #6939: Fix file I/O objects in the `io` module to keep the original - file position when calling `truncate()`. It would previously change the - file position to the given argument, which goes against the tradition of +- Issue #6939: Fix file I/O objects in the `io` module to keep the original file + position when calling `truncate()`. It would previously change the file + position to the given argument, which goes against the tradition of ftruncate() and other truncation APIs. Patch by Pascal Chambon. +- Issue #7610: Reworked implementation of the internal + :class:`zipfile.ZipExtFile` class used to represent files stored inside an + archive. The new implementation is significantly faster and can be wrapped in + a :class:`io.BufferedReader` object for more speedups. It also solves an + issue where interleaved calls to `read()` and `readline()` give wrong results. + Patch by Nir Aides. + +- Issue #6963: Added "maxtasksperchild" argument to multiprocessing.Pool, + allowing for a maximum number of tasks within the pool to be completed by the + worker before that worker is terminated, and a new one created to replace it. + - Issue #7792: Registering non-classes to ABCs raised an obscure error. - Issue #7785: Don't accept bytes in FileIO.write(). +- Removed the functions 'verify' and 'vereq' from Lib/test/support.py. + - Issue #7773: Fix an UnboundLocalError in platform.linux_distribution() when the release file is empty. - Issue #7561: Fix crashes when using bytearray objects with the posix module. -- Issue #1670765: Prevent email.generator.Generator from re-wrapping - headers in multipart/signed MIME parts, which fixes one of the sources of - invalid modifications to such parts by Generator. +- Issue #1670765: Prevent email.generator.Generator from re-wrapping headers in + multipart/signed MIME parts, which fixes one of the sources of invalid + modifications to such parts by Generator. + +- Issue #7703: Add support for the new buffer API to `binascii.a2bhqx`. Patch + by Florent Xicluna, along with some additional tests. -- Issue #7701: Fix crash in binascii.b2a_uu() in debug mode when given a - 1-byte argument. Patch by Victor Stinner. +- Issue #7701: Fix crash in binascii.b2a_uu() in debug mode when given a 1-byte + argument. Patch by Victor Stinner. -- Issue #3299: Fix possible crash in the _sre module when given bad - argument values in debug mode. Patch by Victor Stinner. +- Issue #3299: Fix possible crash in the _sre module when given bad argument + values in debug mode. Patch by Victor Stinner. + +- Issue #2846: Add support for gzip.GzipFile reading zero-padded files. Patch + by Brian Curtin. - Issue #7681: Use floor division in appropiate places in the wave module. @@ -1342,84 +3345,153 @@ Library Extension extra options may change the output without changing the .c file). Initial patch by Collin Winter. -- Issue #7617: Make sure distutils.unixccompiler.UnixCCompiler recognizes - gcc when it has a fully qualified configuration prefix. Initial patch - by Arfrever. +- Issue #7617: Make sure distutils.unixccompiler.UnixCCompiler recognizes gcc + when it has a fully qualified configuration prefix. Initial patch by Arfrever. -- Issue #7105: Make WeakKeyDictionary and WeakValueDictionary robust against - the destruction of weakref'ed objects while iterating. +- Issue #7105: Make WeakKeyDictionary and WeakValueDictionary robust against the + destruction of weakref'ed objects while iterating. -- Issue #7455: Fix possible crash in cPickle on invalid input. Patch by - Victor Stinner. +- Issue #7455: Fix possible crash in cPickle on invalid input. Patch by Victor + Stinner. -- Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when - opening an empty or very small file. +- Issue #1628205: Socket file objects returned by socket.socket.makefile() now + properly handles EINTR within the read, readline, write & flush methods. The + socket.sendall() method now properly handles interrupted system calls. -- Issue #7556: Make sure Distutils' msvc9compile reads and writes the - MSVC XML Manifest file in text mode so string patterns can be used - in regular expressions. +- Issue #7471: Improve the performance of GzipFile's buffering mechanism, and + make it implement the `io.BufferedIOBase` ABC to allow for further speedups by + wrapping it in an `io.BufferedReader`. Patch by Nir Aides. -- Issue #7552: Removed line feed in the base64 Authorization header in - the Distutils upload command to avoid an error when PyPI reads it. - This occurs on long passwords. Initial patch by JP St. Pierre. +- Issue #3972: http.client.HTTPConnection now accepts an optional source_address + parameter to allow specifying where your connections come from. + +- socket.create_connection now accepts an optional source_address parameter. + +- Issue #5511: now zipfile.ZipFile can be used as a context manager. Initial + patch by Brian Curtin. + +- Issue #7556: Make sure Distutils' msvc9compile reads and writes the MSVC XML + Manifest file in text mode so string patterns can be used in regular + expressions. + +- Issue #7552: Removed line feed in the base64 Authorization header in the + Distutils upload command to avoid an error when PyPI reads it. This occurs on + long passwords. Initial patch by JP St. Pierre. - Issue #7231: urllib2 cannot handle https with proxy requiring auth. Patch by Tatsuhiro Tsujikawa. -- Issue #4757: `zlib.compress` and other methods in the zlib module now - raise a TypeError when given an `str` object (rather than a `bytes`-like - object). Patch by Victor Stinner and Florent Xicluna. +- Issue #4757: `zlib.compress` and other methods in the zlib module now raise a + TypeError when given an `str` object (rather than a `bytes`-like object). + Patch by Victor Stinner and Florent Xicluna. - Issue #7349: Make methods of file objects in the io module accept None as an argument where file-like objects (ie StringIO and BytesIO) accept them to mean the same as passing no argument. -- Issue #5949: added check for correct lineends in input from IMAP server - in imaplib. +- Issue #7357: tarfile no longer suppresses fatal extraction errors by default. + +- Issue #5949: added check for correct lineends in input from IMAP server in + imaplib. + +- Add count() and reverse() methods to collections.deque(). - Fix variations of extending deques: d.extend(d) d.extendleft(d) d+=d -- Issue #6986: Fix crash in the JSON C accelerator when called with the - wrong parameter types. Patch by Victor Stinner. +- Issue #6986: Fix crash in the JSON C accelerator when called with the wrong + parameter types. Patch by Victor Stinner. -- Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is - generated in Distutils. Patch by Stephen Emslie. +- Issue #7457: added a read_pkg_file method to + distutils.dist.DistributionMetadata. + +- logging: Added optional `secure` parameter to SMTPHandler, to enable use of + TLS with authentication credentials. + +- Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is generated + in Distutils. Patch by Stephen Emslie. - Issue #4120: Drop reference to CRT from manifest when building extensions with msvc9compiler. -- Issue #7410: deepcopy of itertools.count was resetting the count. +- Issue #7333: The `posix` module gains an `initgroups()` function providing + access to the initgroups(3) C library call on Unix systems which implement it. + Patch by Jean-Paul Calderone. + +- Issue #7408: Fixed distutils.tests.sdist so it doesn't check for group + ownership when the group is not forced, because the group may be different + from the user's group and inherit from its container when the test is run. - Issue #4486: When an exception has an explicit cause, do not print its - implicit context too. This affects the `traceback` module as well as - built-in exception printing. + implicit context too. This affects the `traceback` module as well as built-in + exception printing. + +- Issue #1515: Enable use of deepcopy() with instance methods. Patch by Robert + Collins. + +- Issue #7403: logging: Fixed possible race condition in lock creation. + +- Issue #6845: Add restart support for binary upload in ftplib. The + `storbinary()` method of FTP and FTP_TLS objects gains an optional `rest` + argument. Patch by Pablo Mouzo. -- Issue #1488943: difflib.Differ() doesn't always add hints for tab characters +- Issue #5788: `datetime.timedelta` objects get a new `total_seconds()` method + returning the total number of seconds in the duration. Patch by Brian + Quinlan. -- Issue #7354: distutils.tests.test_msvc9compiler - dragfullwindows can - be 2. +- Issue #7133: SSL objects now support the new buffer API. -- Issue #3976: pprint for sets, frozensets, and dicts now succeed when - they contain unorderable types. +- Issue #1488943: difflib.Differ() doesn't always add hints for tab characters. + +- Issue #6123: tarfile now opens empty archives correctly and consistently + raises ReadError on empty files. + +- Issue #7354: distutils.tests.test_msvc9compiler - dragfullwindows can be 2. - Issue #5037: Proxy the __bytes__ special method instead to __bytes__ instead of __str__. -- Issue #7341: Close the internal file object in the TarFile constructor in - case of an error. +- Issue #7341: Close the internal file object in the TarFile constructor in case + of an error. - Issue #7293: distutils.test_msvc9compiler is fixed to work on any fresh Windows box. Help provided by David Bolen. -- Issue #7328: pydoc no longer corrupts sys.path when run with the '-m' switch +- Issue #2054: ftplib now provides an FTP_TLS class to do secure FTP using TLS + or SSL. Patch by Giampaolo Rodola'. + +- Issue #7328: pydoc no longer corrupts sys.path when run with the '-m' switch. + +- Issue #4969: The mimetypes module now reads the MIME database from the + registry under Windows. Patch by Gabriel Genellina. + +- Issue #6816: runpy now provides a run_path function that allows Python code to + execute file paths that refer to source or compiled Python files as well as + zipfiles, directories and other valid sys.path entries that contain a + __main__.py file. This allows applications that run other Python scripts to + support the same flexibility as the CPython command line itself. + +- Issue #7318: multiprocessing now uses a timeout when it fails to establish a + connection with another process, rather than looping endlessly. The default + timeout is 20 seconds, which should be amply sufficient for local connections. -- Issue #7318: multiprocessing now uses a timeout when it fails to establish - a connection with another process, rather than looping endlessly. The - default timeout is 20 seconds, which should be amply sufficient for - local connections. +- Issue #7197: Allow unittest.TextTestRunner objects to be pickled and + unpickled. This fixes crashes under Windows when trying to run + test_multiprocessing in verbose mode. -- Issue #7282: Fix a memory leak when an RLock was used in a thread other - than those started through `threading.Thread` (for example, using +- Issue #7893: ``unittest.TextTestResult`` is made public and a ``resultclass`` + argument added to the TextTestRunner constructor allowing a different result + class to be used without having to subclass. + +- Issue #7588: ``unittest.TextTestResult.getDescription`` now includes the test + name in failure reports even if the test has a docstring. + +- Issue #3001: Add a C implementation of recursive locks which is used by + default when instantiating a `threading.RLock` object. This makes recursive + locks as fast as regular non-recursive locks (previously, they were slower by + 10x to 15x). + +- Issue #7282: Fix a memory leak when an RLock was used in a thread other than + those started through `threading.Thread` (for example, using `_thread.start_new_thread()`). - Issue #7187: Importlib would not silence the IOError raised when trying to @@ -1428,28 +3500,36 @@ Library - Issue #7264: Fix a possible deadlock when deallocating thread-local objects which are part of a reference cycle. -- Issue #6896: mailbox.Maildir now invalidates its internal cache each time - a modification is done through it. This fixes inconsistencies and test - failures on systems with slightly bogus mtime behaviour. +- Issue #7211: Allow 64-bit values for the `ident` and `data` fields of kevent + objects on 64-bit systems. Patch by Michael Broghton. -- Issue #6665: Fix fnmatch to properly match filenames with newlines in them. +- Issue #6896: mailbox.Maildir now invalidates its internal cache each time a + modification is done through it. This fixes inconsistencies and test failures + on systems with slightly bogus mtime behaviour. + +- Issue #7246 & Issue #7208: getpass now properly flushes input before reading + from stdin so that existing input does not confuse it and lead to incorrect + entry or an IOError. It also properly flushes it afterwards to avoid the + terminal echoing the input afterwards on OSes such as Solaris. + +- Issue #7233: Fix a number of two-argument Decimal methods to make sure that + they accept an int or long as the second argument. Also fix buggy handling of + large arguments (those with coefficient longer than the current precision) in + shift and rotate. -- Issue #7246 & Issue #7208: getpass now properly flushes input before - reading from stdin so that existing input does not confuse it and - lead to incorrect entry or an IOError. It also properly flushes it - afterwards to avoid the terminal echoing the input afterwards on - OSes such as Solaris. +- Issue #4750: Store the basename of the original filename in the gzip FNAME + header as required by RFC 1952. -- Issue #7233: Fix a number of two-argument Decimal methods to make - sure that they accept an int or long as the second argument. Also - fix buggy handling of large arguments (those with coefficient longer - than the current precision) in shift and rotate. +- Issue #1180: Added a new global option to ignore ~/.pydistutils.cfg in + Distutils. + +- Issue #7218: Fix test_site for win32, the directory comparison was done with + an uppercase. - Issue #7205: Fix a possible deadlock when using a BZ2File object from several threads at once. -- Issue #7071: byte-compilation in Distutils is now done with respect to - sys.dont_write_bytecode. +- Issue #7077: logging: SysLogHandler now treats Unicode as per RFC 5424. - Issue #7099: Decimal.is_normal now returns True for numbers with exponent larger than emax. @@ -1457,69 +3537,159 @@ Library - Issue #7080: locale.strxfrm() raises a MemoryError on 64-bit non-Windows platforms, and assorted locale fixes by Derk Drukker. -- Issue #5833: Fix extra space character in readline completion with the - GNU readline library version 6.0. +- Issue #5833: Fix extra space character in readline completion with the GNU + readline library version 6.0. + +- Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment. -- Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment +- Issue #7086: Added TCP support to SysLogHandler, and tidied up some + anachronisms in the code which were a relic of 1.5.2 compatibility. -- Issue #7082: When falling back to the MIME 'name' parameter, the - correct place to look for it is the Content-Type header. +- Issue #7082: When falling back to the MIME 'name' parameter, the correct place + to look for it is the Content-Type header. - Make tokenize.detect_coding() normalize utf-8 and iso-8859-1 variants like the builtin tokenizer. -- Issue #7048: Force Decimal.logb to round its result when that result - is too large to fit in the current precision. +- Issue #7048: Force Decimal.logb to round its result when that result is too + large to fit in the current precision. -- Issue #6236, #6348: Fix various failures in the I/O library under AIX - and other platforms, when using a non-gcc compiler. Patch by Derk Drukker. +- Issue #6236, #6348: Fix various failures in the I/O library under AIX and + other platforms, when using a non-gcc compiler. Patch by Derk Drukker. -- Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils. - -- Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...) - does now always result in NULL. +- Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...) does now + always result in NULL. -- Issue #5042: Structure sub-subclass does now initialize correctly - with base class positional arguments. +- Issue #5042: Structure sub-subclass does now initialize correctly with base + class positional arguments. - Issue #6882: Import uuid creates zombies processes. - Issue #6635: Fix profiler printing usage message. +- Issue #6856: Add a filter keyword argument to TarFile.add(). + - Issue #6888: pdb's alias command was broken when no arguments were given. -- Issue #6795: int(Decimal('nan')) now raises ValueError instead of - returning NaN or raising InvalidContext. Also, fix infinite recursion - in long(Decimal('nan')). +- Issue #6857: Default format() alignment should be '>' for Decimal instances. -- Issue #6850: Fix bug in Decimal._parse_format_specifier for formats - with no type specifier. +- Issue #6795: int(Decimal('nan')) now raises ValueError instead of returning + NaN or raising InvalidContext. Also, fix infinite recursion in + long(Decimal('nan')). + +- Issue #6850: Fix bug in Decimal._parse_format_specifier for formats with no + type specifier. - Issue #6239: ctypes.c_char_p return value must return bytes. -- Issue #6838: Use a list to accumulate the value instead of - repeatedly concatenating strings in http.client's - HTTPResponse._read_chunked providing a significant speed increase - when downloading large files servend with a Transfer-Encoding of 'chunked'. +- Issue #6838: Use a list to accumulate the value instead of repeatedly + concatenating strings in http.client's HTTPResponse._read_chunked providing a + significant speed increase when downloading large files servend with a + Transfer-Encoding of 'chunked'. -- Have importlib raise ImportError if None is found in sys.modules for a - module. +- Trying to import a submodule from a module that is not a package, ImportError + should be raised, not AttributeError. + +- When the globals past to importlib.__import__() has __package__ set to None, + fall back to computing what __package__ should be instead of giving up. + +- Raise a TypeError when the name of a module to be imported for + importlib.__import__ is not a string (was raising an AttributeError before). + +- Allow the fromlist passed into importlib.__import__ to be any iterable. + +- Have importlib raise ImportError if None is found in sys.modules. + +- Issue #6054: Do not normalize stored pathnames in tarfile. - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN payloads are now ordered by integer value rather than lexicographically. -- Issue #6163: Fixed HP-UX runtime library dir options in - distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and - Michael Haubenwallner. +- Issue #1356969: Add missing info methods in tix.HList. -- Issue #7066: archive_util.make_archive now restores the cwd if an error is - raised. Initial patch by Ezio Melotti. +- Issue #1522587: New constants and methods for the tix.Grid widget. + +- Issue #1250469: Fix the return value of tix.PanedWindow.panes. + +- Issue #1119673: Do not override tkinter.Text methods when creating a + ScrolledText. + +- Issue #6665: Fix fnmatch to properly match filenames with newlines in them. + +- Issue #1135: Add the XView and YView mix-ins to avoid duplicating the xview* + and yview* methods. + +- Issue #6629: Fix a data corruption issue in the new I/O library, which could + occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or + "wb+" mode) after having buffered a certain amount of data for reading. This + bug was not present in the pure Python implementation. + +- Issue #6622: Fix "local variable 'secret' referenced before assignment" bug in + POP3.apop. + +- Issue #2715: Remove remnants of Carbon.File from binhex module. + +- Issue #6595: The Decimal constructor now allows arbitrary Unicode decimal + digits in input, as recommended by the standard. Previously it was restricted + to accepting [0-9]. + +- Issue #6106: telnetlib.Telnet.process_rawq doesn't handle default WILL/WONT + DO/DONT correctly. + +- Issue #1424152: Fix for http.client, urllib.request to support SSL while + working through proxy. Original patch by Christopher Li, changes made by + Senthil Kumaran. + +- Add importlib.abc.ExecutionLoader to represent the PEP 302 protocol for + loaders that allow for modules to be executed. Both importlib.abc.PyLoader and + PyPycLoader inherit from this class and provide implementations in relation to + other methods required by the ABCs. + +- importlib.abc.PyLoader did not inherit from importlib.abc.ResourceLoader like + the documentation said it did even though the code in PyLoader relied on the + abstract method required by ResourceLoader. + +- Issue #6431: Make Fraction type return NotImplemented when it doesn't know how + to handle a comparison without loss of precision. Also add correct handling + of infinities and nans for comparisons with float. + +- Issue #6415: Fixed warnings.warn segfault on bad formatted string. + +- Issue #6358: The exit status of a command started with os.popen() was reported + differently than it did with python 2.x. + +- Issue #6323: The pdb debugger did not exit when running a script with a syntax + error. + +- Issue #3392: The subprocess communicate() method no longer fails in select() + when file descriptors are large; communicate() now uses poll() when possible. + +- Issue #6369: Fix an RLE decompression bug in the binhex module. + +- Issue #6344: Fixed a crash of mmap.read() when passed a negative argument. + +- The deprecated function string.maketrans has been removed. + +- Issue #4005: Fixed a crash of pydoc when there was a zip file present in + sys.path. + +- Issue #6218: io.StringIO and io.BytesIO instances are now picklable. + +- The os.get_exec_path() function to return the list of directories that will be + searched for an executable when launching a subprocess was added. - Issue #7481: When a threading.Thread failed to start it would leave the instance stuck in initial state and present in threading.enumerate(). -- Issue #1068268: The subprocess module now handles EINTR in internal - os.waitpid and os.read system calls where appropriate. +- Issue #1068268: The subprocess module now handles EINTR in internal os.waitpid + and os.read system calls where appropriate. + +- Issue #6729: Added ctypes.c_ssize_t to represent ssize_t. + +- Issue #6247: The argparse module has been added to the standard library. + +- Issue #8235: _socket: Add the constant ``SO_SETFIB``. SO_SETFIB is a socket + option available on FreeBSD 7.1 and newer. - Issue #9315: Fix for the trace module to record correct class name for tracing methods. @@ -1527,127 +3697,254 @@ Library Extension Modules ----------------- -- Issue #9277: Fix bug in struct.pack for bools in standard mode - (e.g., struct.pack('>?')): if conversion to bool raised an exception - then that exception wasn't properly propagated on machines where - char is unsigned. +- Issue #9959: Tweak formula used for computing math.log of an integer, + making it marginally more accurate for exact powers of 2. + +- Issue #9422: Fix memory leak when re-initializing a struct.Struct object. + +- Issue #7900: The getgroups(2) system call on MacOSX behaves rather oddly + compared to other unix systems. In particular, os.getgroups() does not reflect + any changes made using os.setgroups() but basicly always returns the same + information as the id command. os.getgroups() can now return more than 16 + groups on MacOSX. + +- Issue #6095: Make directory argument to os.listdir optional. + +- Issue #9277: Fix bug in struct.pack for bools in standard mode (e.g., + struct.pack('>?')): if conversion to bool raised an exception then that + exception wasn't properly propagated on machines where char is unsigned. + +- Issue #5180: Fixed a bug that prevented loading 2.x pickles in 3.x python when + they contain instances of old-style classes. + +- Issue #9165: Add new functions math.isfinite and cmath.isfinite, to accompany + existing isinf and isnan functions. + +- Issue #1578269: Implement os.symlink for Windows 6.0+. Patch by Jason + R. Coombs. + +- In struct.pack, correctly propogate exceptions from computing the truth of an + object in the '?' format. + +- Issue #9000: datetime.timezone objects now have eval-friendly repr. + +- In the math module, correctly lookup __trunc__, __ceil__, and __floor__ as + special methods. -- Issue #5180: Fixed a bug that prevented loading 2.x pickles in 3.x - python when they contain instances of old-style classes. +- Issue #9005: Prevent utctimetuple() from producing year 0 or year 10,000. + Prior to this change, timezone adjustment in utctimetuple() could produce + tm_year value of 0 or 10,000. Now an OverflowError is raised in these edge + cases. -- Issue #7670: sqlite3: Fixed crashes when operating on closed connections. +- Issue #6641: The ``datetime.strptime`` method now supports the ``%z`` + directive. When the ``%z`` directive is present in the format string, an + aware ``datetime`` object is returned with ``tzinfo`` bound to a + ``datetime.timezone`` instance constructed from the parsed offset. If both + ``%z`` and ``%Z`` are present, the data in ``%Z`` field is used for timezone + name, but ``%Z`` data without ``%z`` is discarded. + +- Issue #5094: The ``datetime`` module now has a simple concrete class + implementing ``datetime.tzinfo`` interface. Instances of the new class, + ``datetime.timezone``, return fixed name and UTC offset from their + ``tzname(dt)`` and ``utcoffset(dt)`` methods. The ``dst(dt)`` method always + returns ``None``. A class attribute, ``utc`` contains an instance + representing the UTC timezone. Original patch by Rafe Kaplan. + +- Issue #8973: Add __all__ to struct module; this ensures that help(struct) + includes documentation for the struct.Struct class. + +- Issue #3129: Trailing digits in struct format string are no longer ignored. + For example, "1" or "ilib123" are now invalid formats and cause + ``struct.error`` to be raised. Patch by Caleb Deveraux. + +- Issue #7384: If the system readline library is linked against ncurses, the + curses module must be linked against ncurses as well. Otherwise it is not safe + to load both the readline and curses modules in an application. + +- Issue #2810: Fix cases where the Windows registry API returns ERROR_MORE_DATA, + requiring a re-try in order to get the complete result. + +- Issue #8692: Optimize math.factorial: replace the previous naive algorithm + with an improved 'binary-split' algorithm that uses fewer multiplications and + allows many of the multiplications to be performed using plain C integer + arithmetic instead of PyLong arithmetic. Also uses a lookup table for small + arguments. + +- Issue #8674: Fixed a number of incorrect or undefined-behaviour-inducing + overflow checks in the audioop module. + +- Issue #8644: The accuracy of td.total_seconds() has been improved (by + calculating with integer arithmetic instead of float arithmetic internally): + the result is now always correctly rounded, and is equivalent to ``td / + timedelta(seconds=1)``. + +- Issue #2706: Allow division of a timedelta by another timedelta: timedelta / + timedelta, timedelta % timedelta, timedelta // timedelta and divmod(timedelta, + timedelta) are all supported. + +- Issue #8314: Fix unsigned long long bug in libffi on Sparc v8. + +- Issue #8300: When passing a non-integer argument to struct.pack with any + integer format code, struct.pack first attempts to convert the non-integer + using its __index__ method. If that method is non-existent or raises + TypeError it goes on to try the __int__ method, as described below. + +- Issue #8142: Update libffi to the 3.0.9 release. + +- Issue #6949: Allow the _dbm extension to be built with db 4.8.x. + +- Issue #6544: Fix a reference leak in the kqueue implementation's error + handling. - Stop providing crtassem.h symbols when compiling with Visual Studio 2010, as msvcr100.dll is not a platform assembly anymore. +- Issue #6508: Add posix.{getresuid,getresgid,setresuid,setresgid}. + - Issue #7078: Set struct.__doc__ from _struct.__doc__. +- Issue #3366: Add erf, erfc, expm1, gamma, lgamma functions to math module. + +- Issue #6877: It is now possible to link the readline extension to the libedit + readline emulation on OSX 10.5 or later. + - Issue #6848: Fix curses module build failure on OS X 10.6. +- Fix a segfault that could be triggered by expat with specially formed input. + +- Issue #6561: '\d' in a regex now matches only characters with Unicode category + 'Nd' (Number, Decimal Digit). Previously it also matched characters with + category 'No'. + +- Issue #4509: Array objects are no longer modified after an operation failing + due to the resize restriction in-place when the object has exported buffers. + +- Issue #2389: Array objects are now pickled in a portable manner. + - Expat: Fix DoS via XML document with malformed UTF-8 sequences (CVE_2009_3560). +- Issue #7242: On Solaris 9 and earlier calling os.fork() from within a thread + could raise an incorrect RuntimeError about not holding the import lock. The + import lock is now reinitialized after fork. + - Issue #7999: os.setreuid() and os.setregid() would refuse to accept a -1 parameter on some platforms such as OS X. -Tests ------ +- Build the ossaudio extension on GNU/kFreeBSD. -- Issue #7924: Fix an intermittent 'XXX undetected error' failure in - test_capi (only seen so far on platforms where the curses module - wasn't built), due to an uncleared exception. +- Issue #7347: winreg: Add CreateKeyEx and DeleteKeyEx, as well as fix a bug in + the return value of QueryReflectionKey. -- issue #7728: test_timeout was changed to use test.support.bind_port - instead of a hard coded port. +- Issue #7567: PyCurses_setupterm: Don't call ``setupterm`` twice. -- Issue #7376: instead of running a self-test (which was failing) when called - with no arguments, doctest.py now gives a usage message. +Build +----- -- Issue #7498: test_multiprocessing now uses test.support.find_unused_port - instead of a hardcoded port number in test_rapid_restart. +- Use OpenSSL 1.0.0a on Windows. -- Issue #7431: use TESTFN in test_linecache instead of trying to create a - file in the Lib/test directory, which might be read-only for the - user running the tests. +- Issue #9280: Make sharedinstall depend on sharedmods. -- Issue #7324: add a sanity check to regrtest argument parsing to - catch the case of an option with no handler. +- Issue #9189: Make a user-specified CFLAGS, CPPFLAGS, or LDFLAGS setting + override the configure and makefile defaults, without deleting options the + user didn't intend to override. Developers should no longer need to specify + OPT or EXTRA_CFLAGS, although those variables are still present for + backward-compatibility. -- Issue #6551: test_zipimport could import and then destroy some modules of - the encodings package, which would make other tests fail further down - the road because the internally cached encoders and decoders would point - to empty global variables. +- Issue #8854: Fix finding Visual Studio 2008 on Windows x64. -- Issue #7295: Do not use a hardcoded file name in test_tarfile. +- Issue #1759169, #8864: Drop _XOPEN_SOURCE on Solaris, define it for + multiprocessing only. -- Issue #7270: Add some dedicated unit tests for multi-thread synchronization - primitives such as Lock, RLock, Condition, Event and Semaphore. +- Issue #8625: Turn off optimization in --with-pydebug builds with gcc. + (Optimization was unintentionally turned on in gcc --with-pydebug builds as a + result of the issue #1628484 fix, combined with autoconf's strange choice of + default CFLAGS produced by AC_PROG_CC for gcc.) -- Issue #7248 (part 2): Use a unique temporary directory for importlib source - tests instead of tempfile.tempdir. This prevents the tests from sharing state - between concurrent executions on the same system. +- Issue #3646: It is now easily possible to install a Python framework into your + home directory on MacOSX, see Mac/README for more information. -- Issue #7248: In importlib.test.source.util a try/finally block did not make - sure that some referenced objects actually were created in the block before - calling methods on the object. +- Issue #3928: os.mknod() now available in Solaris, also. -- Issue #7055: test___all__ now greedily detects all modules which have an - __all__ attribute, rather than using a hardcoded and incomplete list. +- Issue #3326: Build Python without -fno-strict-aliasing when the gcc does not + give false warnings. -- Issue #7058: Added save/restore for argv and os.environ to runtest_inner - in regrtest, with warnings if the called test modifies them. +- Issue #1628484: The Makefile doesn't ignore the CFLAGS environment variable + anymore. It also forwards the LDFLAGS settings to the linker when building a + shared library. -- Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6. +- Issue #6716: Quote -x arguments of compileall in MSI installer. Exclude 2to3 + tests from compileall. -C-API ------ +- Issue #3920, #7903: Define _BSD_SOURCE on OpenBSD 4.4 through 4.9. -- Make PyUnicode_CompareWithASCIIString return not equal if the Python string - has '\0' at the end. +- Issue #7632: When Py_USING_MEMORY_DEBUGGER is defined, disable the private + memory allocation scheme in dtoa.c and use PyMem_Malloc and PyMem_Free + instead. Also disable caching of powers of 5. -- Issue #7414: 'C' code wasn't being skipped properly (for keyword arguments) - in PyArg_ParseTupleAndKeywords. +- Issue #6491: Allow --with-dbmliborder to specify that no dbms will be built. -Build ------ +- Issue #6943: Use pkg-config to find the libffi headers when the + --with-system-ffi flag is used. -- Issue #9280: Make sharedinstall depend on sharedmods. +- Issue #7609: Add a --with-system-expat option that causes the system's expat + library to be used for the pyexpat module instead of the one included with + Python. -- Issue #8854: Fix finding Visual Studio 2008 on Windows x64. +- Issue #7589: Only build the nis module when the correct header files are + found. -- Issue #3920, #7903: Define _BSD_SOURCE on OpenBSD 4.4 through 4.9. +- Switch to OpenSSL 0.9.8l and sqlite 3.6.21 on Windows. -- Issue #7632: When Py_USING_MEMORY_DEBUGGER is defined, disable the - private memory allocation scheme in dtoa.c and use PyMem_Malloc and - PyMem_Free instead. Also disable caching of powers of 5. +- Issue #5792: Extend the short float repr support to x86 systems using + icc or suncc. -- Switch to OpenSSL 0.9.8l on Windows. +- Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it compiles + correctly under gcc on x86-64. This fixes a reported problem with the + --with-tsc build on x86-64. -- Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it - compiles correctly under gcc on x86-64. This fixes a reported - problem with the --with-tsc build on x86-64. +- Issue #6802: Fix build issues on MacOSX 10.6. -- Issue #6802: Fix build issues on MacOSX 10.6 +- Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6. + +- Issue #4601: 'make install' did not set the appropriate permissions on + directories. -- Issue #6801 : symmetric_difference_update also accepts |. - Thanks to Carl Chenet. +- Issue #5390: Add uninstall icon independent of whether file extensions are + installed. -- Issue #7541: when using ``python-config`` with a framework install the +- Issue #7541: When using ``python-config`` with a framework install the compiler might use the wrong library. -- Issue #6491: Allow --with-dbmliborder to specify that no dbms will be built. +- python-config now supports multiple options on the same command line. -- Issue #7589: Only build the nis module when the correct header files are - found. +- Issue #8509: Fix quoting in help strings and code snippets in configure.in. + +- Issue #8510: Update to autoconf2.65. Documentation ------------- -- Updating `Using Python` documentation to include description of CPython's - -J and -X options. +- Issue #9817: Add expat COPYING file; add expat, libffi and expat licenses + to Doc/license.rst. + +- Issue #9524: Document that two CTRL* signals are meant for use only + with os.kill. + +- Issue #9255: Document that the 'test' package is meant for internal Python use + only. + +- A small WSGI server was added as Tools/scripts/serve.py, and is used to + implement a local documentation server via 'make serve' in the doc directory. + +- Updating `Using Python` documentation to include description of CPython's -J + and -X options. + +- Document that importing a module that has None in sys.modules triggers an + ImportError. -- Issue #6556: Fixed the Distutils configuration files location explanation - for Windows. +- Issue #6556: Fixed the Distutils configuration files location explanation for + Windows. - Update python manual page (options -B, -O0, -s, environment variables PYTHONDONTWRITEBYTECODE, PYTHONNOUSERSITE). @@ -1655,130 +3952,146 @@ Documentation - Issue #8909: Added the size of the bitmap used in the installer created by distutils' bdist_wininst. Patch by Anatoly Techtonik. +Tests +----- -What's New in Python 3.1.1? -=========================== +- Issue #9251: test_threaded_import didn't fail when run through regrtest if the + import lock was disabled. -*Release date: 2009-08-13* +- Issue #8605: Skip test_gdb if Python is compiled with optimizations. -Core and Builtins ------------------ +- Issue #7449: Skip test_socketserver if threading support is disabled. -- Issue #6707: dir() on an uninitialized module caused a crash. +- Issue #8672: Add a zlib test ensuring that an incomplete stream can be handled + by a decompressor object without errors (it returns incomplete uncompressed + data). -- Issue #6540: Fixed crash for bytearray.translate() with invalid parameters. +- Issue #8533: regrtest uses backslashreplace error handler for stdout to avoid + UnicodeEncodeError (write non-ASCII character to stdout using ASCII encoding). -- Issue #6573: set.union() stopped processing inputs if an instance of self - occurred in the argument chain. +- Issue #8576: Remove use of find_unused_port() in test_smtplib and + test_multiprocessing. Patch by Paul Moore. -- Issue #6070: On posix platforms import no longer copies the execute bit - from the .py file to the .pyc file if it is set. +- Issue #7449: Fix many tests to support Python compiled without thread + support. Patches written by Jerry Seutter. -- Issue #6428: Since Python 3.0, the __bool__ method must return a bool - object, and not an int. Fix the corresponding error message, and the - documentation. +- Issue #8108: test_ftplib's non-blocking SSL server now has proper handling of + SSL shutdowns. -- Issue #6347: Include inttypes.h as well as stdint.h in pyport.h. - This fixes a build failure on HP-UX: int32_t and uint32_t are - defined in inttypes.h instead of stdint.h on that platform. +- Issues #8279, #8330, #8437, #8480, #8495: Fix test_gdb failures, patch written + by Dave Malcolm. -- Issue #6373: Fixed a SystemError when encoding with the latin-1 codec and - the 'surrogateescape' error handler, a string which contains unpaired - surrogates. +- Issue #3864: Skip three test_signal tests on freebsd6 because they fail if any + thread was previously started, most likely due to a platform bug. -C-API ------ +- Issue #8193: Fix test_zlib failure with zlib 1.2.4. -- Issue #6624: yArg_ParseTuple with "s" format when parsing argument with - NUL: Bogus TypeError detail string. +- Issue #8248: Add some tests for the bool type. Patch by Gregory Nofi. -- Issue #6405: Remove duplicate type declarations in descrobject.h. +- Issue #8263: Now regrtest.py will report a failure if it receives a + KeyboardInterrupt (SIGINT). -- The code flags for old __future__ features are now available again. +- Issue #8180 and #8207: Fix test_pep277 on OS X and add more tests for special + Unicode normalization cases. -Library -------- +- Issue #7783: test.support.open_urlresource invalidates the outdated files from + the local cache. -- Issue #6106: telnetlib.Telnet.process_rawq doesn't handle default WILL/WONT - DO/DONT correctly. +- Issue #7849: Now the utility ``check_warnings`` verifies if the warnings are + effectively raised. -- Issue #6126: Fixed pdb command-line usage. +- The four path modules (genericpath, macpath, ntpath, posixpath) share a common + TestCase for some tests: test_genericpath.CommonTest. -- Issue #6629: Fix a data corruption issue in the new I/O library, which could - occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or - "wb+" mode) after having buffered a certain amount of data for reading. This - bug was not present in the pure Python implementation. +- Print platform information when running the whole test suite, or using the + --verbose flag. -- Issue #6622: Fix "local variable 'secret' referenced before - assignment" bug in POP3.apop. +- Issue #767675: enable test_pep277 on POSIX platforms with Unicode-friendly + filesystem encoding. -- Issue #6637: defaultdict.copy() did not work when the default factory - was left unspecified. Also, the eval/repr round-trip would fail when - the default_factory was None. +- Issue #6292: for the moment at least, the test suite runs cleanly if python is + run with the -OO flag. Tests requiring docstrings are skipped. -- Issue #2715: Remove remnants of Carbon.File from binhex module. +- Issue #7712: test.support gained a new `temp_cwd` context manager which is now + also used by regrtest to run all the tests in a temporary directory. The + original CWD is saved in `support.SAVEDCWD`. Thanks to Florent Xicluna who + helped with the patch. -- Issue #6595: The Decimal constructor now allows arbitrary Unicode -decimal digits in input, as recommended by the standard. Previously -it was restricted to accepting [0-9]. +- Issue #7924: Fix an intermittent 'XXX undetected error' failure in test_capi + (only seen so far on platforms where the curses module wasn't built), due to + an uncleared exception. -- Issues #5155, #5313, #5331: multiprocessing.Process._bootstrap was -unconditionally calling "os.close(sys.stdin.fileno())" resulting in file -descriptor errors +- Issue #7728: test_timeout was changed to use support.bind_port instead of a + hard coded port. -- Issue #1424152: Fix for http.client, urllib.request to support SSL while -working through proxy. Original patch by Christopher Li, changes made by -Senthil Kumaran +- Issue #7376: Instead of running a self-test (which was failing) when called + with no arguments, doctest.py now gives a usage message. -- importlib.abc.PyLoader did not inherit from importlib.abc.ResourceLoader like -the documentation said it did even though the code in PyLoader relied on the -abstract method required by ResourceLoader. +- Issue #7396: fix regrtest -s, which was broken by the -j enhancement. -- Issue #6431: Make Fraction type return NotImplemented when it doesn't -know how to handle a comparison without loss of precision. Also add -correct handling of infinities and nans for comparisons with float. +- Issue #7498: test_multiprocessing now uses test.support.find_unused_port + instead of a hardcoded port number in test_rapid_restart. -- Issue #6415: Fixed warnings.warn segfault on bad formatted string. +- Issue #7431: Use TESTFN in test_linecache instead of trying to create a file + in the Lib/test directory, which might be read-only for the user running the + tests. -- Issue #6358: The exit status of a command started with os.popen() was -reported differently than it did with python 2.x. +- Issue #7324: Add a sanity check to regrtest argument parsing to catch the case + of an option with no handler. -- Issue #6323: The pdb debugger did not exit when running a script with a -syntax error. +- Issue #7312: Add a -F flag to run the selected tests in a loop until a test + fails. Can be combined with -j. -- Issue #3392: The subprocess communicate() method no longer fails in select() - when file descriptors are large; communicate() now uses poll() when possible. +- Issue #6551: test_zipimport could import and then destroy some modules of the + encodings package, which would make other tests fail further down the road + because the internally cached encoders and decoders would point to empty + global variables. -- Issue #6369: Fix an RLE decompression bug in the binhex module. +- Issue #7295: Do not use a hardcoded file name in test_tarfile. -- Issue #6344: Fixed a crash of mmap.read() when passed a negative argument. +- Issue #7270: Add some dedicated unit tests for multi-thread synchronization + primitives such as Lock, RLock, Condition, Event and Semaphore. -- Issue #4005: Fixed a crash of pydoc when there was a zip file present in - sys.path. +- Issue #7248 (part 2): Use a unique temporary directory for importlib source + tests instead of tempfile.tempdir. This prevents the tests from sharing state + between concurrent executions on the same system. -Extension Modules ------------------ +- Issue #7248: In importlib.test.source.util a try/finally block did not make + sure that some referenced objects actually were created in the block before + calling methods on the object. -- Fix a segfault in expat. +- Issue #7222: Make thread "reaping" more reliable so that reference + leak-chasing test runs give sensible results. The previous method of reaping + threads could return successfully while some Thread objects were still + referenced. This also introduces a new private function: + :func:`_thread._count()`. -- Issue #4509: array.array objects are no longer modified after an operation - failing due to the resize restriction in-place when the object has exported - buffers. +- Issue #7151: Fixed regrtest -j so that output to stderr from a test no longer + runs the risk of causing the worker thread to fail. -Build ------ +- Issue #7055: test___all__ now greedily detects all modules which have an + __all__ attribute, rather than using a hardcoded and incomplete list. -- Issue #4601: 'make install' did not set the appropriate permissions on -directories. +- Issue #7058: Added save/restore for things like sys.argv and cwd to + runtest_inner in regrtest, with warnings if the called test modifies them, and + a new section in the summary report at the end. -- Issue #5390: Add uninstall icon independent of whether file -extensions are installed. +- Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6. -Test ----- +- Fixed tests in importlib.test.source.test_abc_loader that were masking the + proper exceptions that should be raised for missing or improper code object + bytecode. -- Fix a test in importlib.test.source.test_abc_loader that was incorrectly -testing when a .pyc file lacked an code object bytecode. +- Removed importlib's custom test discovery code and switched to + unittest.TestLoader.discover(). + +Tools/Demos +----------- + +- Issue #5464, #8974: Implement plural forms in msgfmt.py. + +- iobench (a file I/O benchmark) and ccbench (a concurrency benchmark) were + added to the `Tools/` directory. They were previously living in the sandbox. What's New in Python 3.1? @@ -1790,27 +4103,28 @@ Core and Builtins ----------------- - Issue #6334: Fix bug in range length calculation for ranges with -large arguments. + large arguments. - Issue #6329: Fixed iteration for memoryview objects (it was being blocked -because it wasn't recognized as a sequence). + because it wasn't recognized as a sequence). Library ------- -- Issue #6314: logging.basicConfig() performs extra checks on the "level" -argument. +- Issue #6126: Fixed pdb command-line usage. + +- Issue #6314: logging: performs extra checks on the "level" argument. - Issue #6274: Fixed possible file descriptors leak in subprocess.py - Accessing io.StringIO.buffer now raises an AttributeError instead of -io.UnsupportedOperation. + io.UnsupportedOperation. - Issue #6271: mmap tried to close invalid file handle (-1) when anonymous. -(On Unix) + (On Unix) - Issue #1202: zipfile module would cause a struct.error when attempting to -store files with a CRC32 > 2**31-1. + store files with a CRC32 > 2**31-1. Extension Modules ----------------- @@ -1829,10 +4143,10 @@ Core and Builtins - Fixed SystemError triggered by "range([], 1, -1)". - Issue #5924: On Windows, a large PYTHONPATH environment variable -(more than 255 characters) would be completely ignored. + (more than 255 characters) would be completely ignored. - Issue #4547: When debugging a very large function, it was not always -possible to update the lineno attribute of the current frame. + possible to update the lineno attribute of the current frame. - Issue #5330: C functions called with keyword arguments were not reported by the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau. @@ -1841,38 +4155,38 @@ Library ------- - Issue #6438: Fixed distutils.cygwinccompiler.get_versions : the regular -expression string pattern was trying to match against a bytes returned by -Popen. Tested under win32 to build the py-postgresql project. + expression string pattern was trying to match against a bytes returned by + Popen. Tested under win32 to build the py-postgresql project. - Issue #6258: Support AMD64 in bdist_msi. - Issue #6195: fixed doctest to no longer try to read 'source' data from -binary files. + binary files. - Issue #5262: Fixed bug in next rollover time computation in -TimedRotatingFileHandler. + TimedRotatingFileHandler. - Issue #6217: The C implementation of io.TextIOWrapper didn't include the -errors property. Additionally, the errors and encoding properties of StringIO -are always None now. + errors property. Additionally, the errors and encoding properties of StringIO + are always None now. - Issue #6137: The pickle module now translates module names when loading -or dumping pickles with a 2.x-compatible protocol, in order to make data -sharing and migration easier. This behaviour can be disabled using the -new `fix_imports` optional argument. + or dumping pickles with a 2.x-compatible protocol, in order to make data + sharing and migration easier. This behaviour can be disabled using the + new `fix_imports` optional argument. - Removed the ipaddr module. - Issue #3613: base64.{encode,decode}string are now called -base64.{encode,decode}bytes which reflects what type they accept and return. -The old names are still there as deprecated aliases. + base64.{encode,decode}bytes which reflects what type they accept and return. + The old names are still there as deprecated aliases. - Issue #5767: Remove sgmlop support from xmlrpc.client. - Issue #6150: Fix test_unicode on wide-unicode builds. - Issue #6149: Fix initialization of WeakValueDictionary objects from non-empty -parameters. + parameters. Windows ------- @@ -2155,7 +4469,7 @@ Core and Builtins - Issue #2170: refactored xml.dom.minidom.normalize, increasing both its clarity and its speed. -- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)' +- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add ``do { ... } while (0)`` to avoid compiler warnings. - Issue #3739: The unicode-internal encoder now reports the number of characters @@ -2169,6 +4483,8 @@ Installation Library ------- +- Issue #8203: Fix IDLE Credits dialog: view_file() uses its encoding argument. + - Issue #5311: bdist_msi can now build packages that do not depend on a specific Python version. @@ -2477,7 +4793,7 @@ Core and Builtins optional module state data. - Issue #4910: Rename nb_long slot to nb_reserved, and change its - type to (void *). + type to ``(void *)``. - Issue #4935: The overflow checking code in the expandtabs() method common to str, bytes and bytearray could be optimized away by the compiler, letting @@ -2532,8 +4848,8 @@ Core and Builtins - Issue #4747: When the terminal does not use utf-8, executing a script with non-ascii characters in its name could fail with a "SyntaxError: None" error. -- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open - file with `bytes' filename on Windows. +- Issue #4797: IOError.filename was not set when ``_fileio.FileIO`` failed + to open file with a bytes filename on Windows. - Issue #3680: Reference cycles created through a dict, set or deque iterator did not get collected. @@ -2600,23 +4916,65 @@ Core and Builtins Library ------- +- Issue #7071: byte-compilation in Distutils is now done with respect to + sys.dont_write_bytecode. + +- Issue #7066: archive_util.make_archive now restores the cwd if an error is + raised. Initial patch by Ezio Melotti. + +- Issue #6516: Added owner/group support when creating tar archives in + Distutils. + +- Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils. + +- Issue #6163: Fixed HP-UX runtime library dir options in + distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and + Michael Haubenwallner. + +- Issue #6693: New functions in site.py to get user/global site packages paths. + +- Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when + opening an empty or very small file. + - Issue #6545: Removed assert statements in distutils.Extension, so the behavior is similar when used with -O. -- Issue #6459: distutils.command.build_ext.get_export_symbols now uses the - "PyInit" prefix, rather than "init". +- unittest has been split up into a package. All old names should still work. + +- Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler + uses the same refactored function to get gcc/ld/dllwrap versions numbers. + It's `distutils.util.get_compiler_versions`. Added deprecation warnings + for the obsolete get_versions() functions. - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list +- Issue #6314: logging: Extra checks on the "level" argument in more places. + +- Issue #2622: Fixed an ImportError when importing email.message from a + standalone application built with py2exe or py2app. + - Issue #6455: Fixed test_build_ext under win32. +- Issue #6377: Enabled the compiler option, and deprecate its usage as an + attribute. + - Issue #6413: Fixed the log level in distutils.dist for announce. - Issue #6403: Fixed package path usage in build_ext. +- Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was + unconditionally calling "os.close(sys.stdin.fileno())" resulting in file + descriptor errors + - Issue #6365: Distutils build_ext inplace mode was copying the compiled extension in a subdirectory if the extension name had dots. +- Issue #6164: Added an AIX specific linker argument in Distutils + unixcompiler. Original patch by Sridhar Ratnakumar. + +- Issue #6286: Now Distutils upload command is based on urllib2 instead of + httplib, allowing the usage of http_proxy. + - Issue #6287: Added the license field in Distutils documentation. - Issue #6263: Fixed syntax error in distutils.cygwincompiler. @@ -2742,7 +5100,7 @@ Library - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer overrun. -- Issue #1533164: Installed but not listed *.pyo was breaking Distutils +- Issue #1533164: Installed but not listed ``*.pyo`` was breaking Distutils bdist_rpm command. - Issue #5378: added --quiet option to Distutils bdist_rpm command. @@ -2895,8 +5253,8 @@ Library - Issue #4959: inspect.formatargspec now works for keyword only arguments without defaults. -- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks - for *nix machines for negative handles and large int handles. Without this check +- Issue #3321: ``_multiprocessing.Connection()`` doesn't check handle; added checks + for Unix machines for negative handles and large int handles. Without this check it is possible to segfault the interpreter. - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue @@ -3102,6 +5460,9 @@ Build C-API ----- +- Issue #6624: yArg_ParseTuple with "s" format when parsing argument with + NUL: Bogus TypeError detail string. + - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError for negative arguments. Previously, it raised TypeError. @@ -3152,6 +5513,9 @@ Extension Modules Tests ----- +- Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running + regression tests in parallel, shortening the total runtime. + - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to Lib/tkinter/test/test_tkinter/test_loadtk. With this, these tests demonstrate the same behaviour as test_ttkguionly (and now also test_tk) which is to |