Core and Builtins
-----------------
-- Correct lookup of __dir__ on objects. Among other things, this causes errors
- besides AttributeError found on lookup to be propagated.
-
-- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal
- module. Patch written by Charles-François Natali.
+Library
+-------
-- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
- clear the end-of-file indicator after CTRL+d.
++- Issue #12175: RawIOBase.readall() now returns None if read() returns None.
+
-- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
- the check of the object type doesn't read the __class__ attribute anymore.
- Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
- str type). Patch written by Andreas Stührk.
++- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
++ if the file is closed.
+
-- Issue #6780: fix starts/endswith error message to mention that tuples are
- accepted too.
+- Issue #12070: Fix the Makefile parser of the sysconfig module to handle
+ correctly references to "bogus variable" (e.g. "prefix=$/opt/python").
-- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
- between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
- chars (e.g. "\U00012345"[0]).
+- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to
+ their encode() method anymore, but continue to call the reset() method if the
+ final argument is True.
-- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
- (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
- written by Charles-Francois Natali.
+- Issue #5715: In socketserver, close the server socket in the child process.
-- 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).
+- Correct lookup of __dir__ on objects. Among other things, this causes errors
+ besides AttributeError found on lookup to be propagated.
-- 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 #12124: zipimport doesn't keep a reference to zlib.decompress() anymore
+ to be able to unload the module.
-- Issue #10451: memoryview objects could allow to mutate a readable buffer.
- Initial patch by Ross Lagerwall.
+- Issue #12065: connect_ex() on an SSL socket now returns the original errno
+ when the socket's timeout expires (it used to return None).
-- 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 #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime()
- can now handle dates after 2038.
+What's New in Python 3.2.1 release candidate 1?
+===============================================
-- issue #11828: startswith and endswith don't accept None as slice index.
- Patch by Torsten Becker.
+*Release date: 15-May-2011*
-- 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__.
+Core and Builtins
+-----------------
-- 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 #12060: Use sig_atomic_t type and volatile keyword in the signal
+ module. Patch written by Charles-François Natali.
-- Issue #5587: add a repr to dict_proxy objects. Patch by David Stanek and
- Daniel Urban.
+- Issue #12044: Fixed subprocess.Popen when used as a context manager to
+ wait for the process to end when exiting the context to avoid unintentionally
+ leaving zombie processes around.
-- Issue #11506: Trying to assign to a bytes literal should result in a
- SyntaxError.
+- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
+ clear the end-of-file indicator after CTRL+d.
Library
-------
Core and Builtins
-----------------
-- 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 #10889: range indexing and slicing now works correctly on ranges with
+ a length that exceeds sys.maxsize.
-- Issue #5437: A preallocated MemoryError instance should not hold traceback
- data (including local variables caught in the stack trace) alive infinitely.
+- Issue #10892: Don't segfault when trying to delete __abstractmethods__ from a
+ class.
-- Issue #10077: Fix logging of site module errors at startup.
+- 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 #10186: Fix the SyntaxError caret when the offset is equal to the length
- of the offending line.
+- 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).
-- 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.
+- Remove buffer API from stable ABI for now, see #10181.
-- Issue #10006: type.__abstractmethods__ now raises an AttributeError. As a
- result metaclasses can now be ABCs (see #9533).
+- 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 #9997: Don't let the name "top" have special significance in scope
- resolution.
+- Issue #9015, #9611: FileIO.readinto(), FileIO.write(), os.write() and
+ stdprinter.write() clamp the length to 2^31-1 on Windows.
-- 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 #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime()
+ can now handle dates after 2038.
-- 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 #10780: PyErr_SetFromWindowsErrWithFilename() and
+ PyErr_SetExcFromWindowsErrWithFilename() decode the filename from the
+ filesystem encoding instead of UTF-8.
-- Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid
- thread-local storage key.
+- Issue #10779: PyErr_WarnExplicit() decodes the filename from the filesystem
+ encoding instead of UTF-8.
-- Issue #9737: Fix a crash when trying to delete a slice or an item from
- a memoryview object.
+- Add sys.flags attribute for the new -q command-line option.
-- Issue #7415: PyUnicode_FromEncodedObject() now uses the new buffer API
- properly. Patch by Stefan Behnel.
+- Issue #11506: Trying to assign to a bytes literal should result in a
+ SyntaxError.
-- Restore GIL in nis_cat in case of error.
+Library
+-------
- - Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
- if the file is closed.
-
-- Issue #9712: Fix tokenize on identifiers that start with non-ascii names.
+- 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 #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t.
+- Issue #10154, #10090: change the normalization of UTF-8 to "UTF-8" instead
+ of "UTF8" in the locale module as the latter is not supported MacOSX and OpenBSD.
-- Issue #5319: Print an error if flushing stdout fails at interpreter
- shutdown.
+- Issue #10684: shutil.move used to delete a folder on case insensitive
+ filesystems when the source and destination name where the same except
+ for the case.
-- 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 #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 #83755: Implicit set-to-frozenset conversion was not thread-safe.
+- 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).
-- Issue #10068: Global objects which have reference cycles with their module's
- dict are now cleared again. This causes issue #7140 to appear again.
+- Add encoding and errors arguments to urllib.parse_qs() and urllib.parse_qsl().
-- Issue #9416: Fix some issues with complex formatting where the
- output with no type specifier failed to match the str output:
+- Issue #10899: No function type annotations in the standard library. Removed
+ function type annotations from _pyio.py.
- - 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 #10875: Update Regular Expression HOWTO; patch by 'SilentGhost'.
-- Issue #7616: Fix copying of overlapping memoryview slices with the Intel
- compiler.
+- Issue #10872: The repr() of TextIOWrapper objects now includes the mode
+ if available.
-- 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 #10869: Fixed bug where ast.increment_lineno modified the root node
+ twice.
-- 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 #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.
-- Issue #9058: Remove assertions about INT_MAX in UnicodeDecodeError.
+- Issue #10859: Make ``contextlib.GeneratorContextManager`` officially
+ private by renaming it to ``_GeneratorContextManager``.
-- 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 #10042: Fixed the total_ordering decorator to handle cross-type
+ comparisons that could lead to infinite recursion.
-- In the str.format(), raise a ValueError when indexes to arguments are too
- large.
+- 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.
-- Issue #8766: Initialize _warnings module before importing the first module.
- Fix a crash if an empty directory called "encodings" exists in sys.path.
+- 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.
-- PyObject_Dump() encodes unicode objects to utf8 with backslashreplace
- (instead of strict) error handler to escape surrogates
+- 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 #8124: PySys_WriteStdout() and PySys_WriteStderr() don't execute
- indirectly Python signal handlers anymore because mywrite() ignores
- exceptions (KeyboardInterrupt)
+- Issue #7858: Raise an error properly when os.utime() fails under Windows
+ on an existing file.
-- Issue #8092: Fix PyUnicode_EncodeUTF8() to support error handler producing
- unicode string (eg. backslashreplace)
+- Issue #3839: wsgiref should not override a Content-Length header set by
+ the application. Initial patch by Clovis Fabricio.
-- Issue #8014: Setting a T_UINT or T_PYSSIZET attribute of an object with
- PyMemberDefs could produce an internal error; raise TypeError instead.
+- Issue #10492: bdb.Bdb.run() only traces the execution of the code, not the
+ compilation (if the input is a string).
-- Issue #8417: Raise an OverflowError when an integer larger than sys.maxsize is
- passed to bytes or bytearray.
+- Issue #7995: When calling accept() on a socket with a timeout, the returned
+ socket is now always blocking, regardless of the operating system.
-- Issue #8329: Don't return the same lists from select.select when no fds are
- changed.
+- Issue #10756: atexit normalizes the exception before displaying it. Patch by
+ Andreas Stührk.
-- Raise a TypeError when trying to delete a T_STRING_INPLACE struct member.
+- Issue #10790: email.header.Header.append's charset logic now works correctly
+ for charsets whose output codec is different from its input codec.
-- Issue #8226: sys.setfilesystemencoding() raises a LookupError if the encoding
- is unknown
+- Issue #10819: SocketIO.name property returns -1 when its closed, instead of
+ raising a ValueError, to fix repr().
-- Issue #1583863: An str subclass can now override the __str__ method
+- 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 #7072: isspace(0xa0) is true on Mac OS X
+- Issue #6643: Reinitialize locks held within the threading module after fork to
+ avoid a potential rare deadlock or crash on some platforms.
-C-API
------
+- 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.
-- Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or
- PySequence_DelSlice when the object doesn't have any mapping operations
- defined.
+- `unittest.TestCase` can be instantiated without a method name; for simpler
+ exploration from the interactive interpreter.
-- 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 #10798: Reject supporting concurrent.futures if the system has too
+ few POSIX semaphores.
-Library
--------
+- Issue #10807: Remove base64, bz2, hex, quopri, rot13, uu and zlib codecs from
+ the codec aliases. They are still accessible via codecs.lookup().
-- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru.
+- Issue #10801: In zipfile, support different encodings for the header and the
+ filenames.
-- Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by
- Lorenzo M. Catucci.
+- Issue #6285: IDLE no longer crashes on missing help file; patch by Scott
+ David Daniels.
-- Fix IMAP.login() to work properly.
+- Fix collections.OrderedDict.setdefault() so that it works in subclasses that
+ define __missing__().
-- Issue #10126: Fix distutils' test_build when Python was built with
- --enable-shared.
+- 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.
-- Fix typo in one sdist option (medata-check).
+- 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 #9199: Fix incorrect use of distutils.cmd.Command.announce.
+- Issue #10738: Fix webbrowser.Opera.raise_opts.
-- Issue #1718574: Fix options that were supposed to accept arguments but did
- not in build_clib.
+- Issue #9824: SimpleCookie now encodes , and ; in values to cater to how
+ browsers actually parse cookies.
-- Issue #9281: Prevent race condition with mkdir in distutils. Patch by
- Arfrever.
+- 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 #10229: Fix caching error in gettext.
+- Issue #10783: struct.pack() no longer implicitly encodes unicode to UTF-8.
-- Issue #10252: Close file objects in a timely manner in distutils code and
- tests. Patch by Brian Brazil, completed by Éric Araujo.
+- Issue #10730: Add SVG mime types to mimetypes module.
-- Issue #10311: The signal module now restores errno before returning from
- its low-level signal handler. Patch by Hallvard B Furuseth.
+- Issue #10768: Make the Tkinter ScrolledText widget work again.
-- The keyword only restriction for the places argument in
- unittest.TestCase.assert[Not]AlmostEqual methods has been removed.
+- Issue #10777: Fix "dictionary changed size during iteration" bug in
+ ElementTree register_namespace().
-- Issue #6706: asyncore accept() method no longer raises EWOULDBLOCK/ECONNABORTED
- on incomplete connection attempt but returns None instead.
+- Issue #10626: test_logging now preserves logger disabled states.
-- Issue #10266: uu.decode didn't close in_file explicitly when it was given
- as a filename. Patch by Brian Brazil.
+- Issue #10774: test_logging now removes temp files created during tests.
-- Issue #10246: uu.encode didn't close file objects explicitly when filenames
- were given to it. Patch by Brian Brazil.
+- 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 #10253: FileIO leaks a file descriptor when trying to open a file
- for append that isn't seekable. Patch by Brian Brazil.
+- Issue #10763: subprocess.communicate() closes stdout and stderr if both are
+ pipes (bug specific to Windows).
-- 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.
+- Issue #1693546: fix email.message RFC 2231 parameter encoding to be in better
+ compliance (no "s around encoded values).
-- Issue #7761: telnetlib.interact failures on Windows fixed.
+- Improved the diff message in the unittest module's assertCountEqual().
-- Issue #5117: Case normalization was needed on ntpath.relpath(). And
- fixed root directory issue on posixpath.relpath(). (Ported working fixes
- from ntpath)
+- Issue #1155362: email.utils.parsedate_tz now handles a missing space before
+ the '-' of a timezone field as well as before a '+'.
-- 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 #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 #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the
- current directory was deleted. Patch written by W. Trevor King.
+- Issue #10750: The ``raw`` attribute of buffered IO objects is now read-only.
-- Issue #9759: GzipFile now raises ValueError when an operation is attempted
- after the file is closed. Patch by Jeffrey Finkelstein.
+- Deprecated assertDictContainsSubset() in the unittest module.
-- Issue #9042: Fix interaction of custom translation classes and caching in
- gettext.
+C-API
+-----
-- Issue #9065: tarfile no longer uses "root" as the default for the uname and
- gname field.
+- Issue #10913: Deprecate misleading functions PyEval_AcquireLock() and
+ PyEval_ReleaseLock(). The thread-state aware APIs should be used instead.
-- Issue #8980: Fixed a failure in distutils.command check that was shadowed
- by an environment that does not have docutils. Patch by Arfrever.
+- Issue #10333: Remove ancient GC API, which has been deprecated since Python
+ 2.2.
-- Issue #1050268: parseaddr now correctly quotes double quote and backslash
- characters that appear inside quoted strings in email addresses.
+Build
+-----
-- Issue #10004: quoprimime no longer generates a traceback when confronted
- with invalid characters after '=' in a Q-encoded word.
+- 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 #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.
+- Issue #10820: Fix OS X framework installs to support version-specific
+ scripts (#10679).
-- Issue #9936: Fixed executable lines' search in the trace module.
+- 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 #9928: Properly initialize the types exported by the bz2 module.
+- Issue #10475: Don't hardcode compilers for LDSHARED/LDCXXSHARED on NetBSD
+ and DragonFly BSD. Patch by Nicolas Joly.
-- Issue #9854: The default read() implementation in io.RawIOBase now
- handles non-blocking readinto() returning None correctly.
+- Issue #10679: The "idle", "pydoc" and "2to3" scripts are now installed with
+ a version-specific suffix on "make altinstall".
-- Issue #9853: Fix the signature of SSLSocket.recvfrom() and
- SSLSocket.sendto() to match the corresponding socket methods.
+- 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 #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 #1099: Fix the build on MacOSX when building a framework with pydebug
+ using GCC 4.0.
-- Issue #9826: OrderedDict.__repr__ can now handle self-referential
- values: d['x'] = d.
+Tools/Demos
+-----------
-- 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 #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 #6656: fix locale.format_string to handle escaped percents
- and mappings.
+- 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 #1100562: Fix deep-copying of objects derived from the list and
- dict types. Patch by Michele Orrù and Björn Lindqvist.
+- 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.
-- Issue #9753: Fixed socket.dup, which did not always work correctly
- on Windows.
+Tests
+-----
-- Issue #1868: Eliminate subtle timing issues in thread-local objects by
- getting rid of the cached copy of thread-local attribute dictionary.
+- Fix test_startfile to wait for child process to terminate before finishing.
-- Issue #8797: urllib2 does a retry for Basic Authentication failure instead of
- falling into recursion.
+- Issue #10822: Fix test_posix:test_getgroups failure under Solaris. Patch
+ by Ross Lagerwall.
-- Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four
- character years even if the message contains RFC822 two character years.
+- Make the --coverage flag work for test.regrtest.
-- Issue #8750: Fixed MutableSet's methods to correctly handle
- reflexive operations, namely x -= x and x ^= x.
+- Issue #1677694: Refactor and improve test_timeout. Original patch by
+ Björn Lindqvist.
-- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing
- error handling when accepting a new connection.
+- Issue #5485: Add tests for the UseForeignDTD method of expat parser objects.
+ Patch by Jean-Paul Calderone and Sandro Tosi.
-- Issue #658749: asyncore's connect() method now correctly interprets winsock
- errors.
+- 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.
+
+- Issue #10714: Limit length of incoming request in http.server to 65536 bytes
+ for security reasons. Initial patch by Ross Lagerwall.
+
+- 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 #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 #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.
+
+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.
+
+- Issue #10710: ``Misc/setuid-prog.c`` is removed from the source tree.
+
+- Issue #10706: Remove outdated script runtests.sh. Either ``make test``
+ or ``python -m test`` should be used instead.
+
+Build
+-----
+
+- The Windows build now uses Tcl/Tk 8.5.9 and sqlite3 3.7.4.
+
+- Issue #9234: argparse supports alias names for subparsers.
+
+
+What's New in Python 3.2 Beta 1?
+================================
+
+*Release date: 05-Dec-2010*
+
+Core and Builtins
+-----------------
+
+- Issue #10630: Return dict views from the dict proxy keys()/values()/items()
+ methods.
+
+- 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 #1772833: Add the -q command-line option to suppress copyright and
+ version output in interactive mode.
+
+- Provide an *optimize* parameter in the built-in compile() function.
+
+- Fixed several corner case issues on Windows in os.stat/os.lstat related to
+ reparse points.
+
+- PEP 384 (Defining a Stable ABI) is implemented.
+
+- Issue #2690: Range objects support negative indices and slicing.
+
+- Issue #9915: Speed up sorting with a key.
+
+- Issue #8685: Speed up set difference ``a - b`` when source set ``a`` is much
+ larger than operand ``b``. Patch by Andrew Bennetts.
+
+- Issue #10518: Bring back the callable() builtin.
+
+- 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 #10474: range.count() should return integers.
+
+- Issue #1574217: isinstance now catches only AttributeError, rather than
+ masking all errors.
+
+Library
+-------
+
+- logging: added "handler of last resort". See http://bit.ly/last-resort-handler
+
+- test.support: Added TestHandler and Matcher classes for better support of
+ assertions about logging.
+
+- Issue #4391: Use proper plural forms in argparse.
+
+- Issue #10601: sys.displayhook uses 'backslashreplace' error handler on
+ UnicodeEncodeError.
+
+- Add the "display" and "undisplay" pdb commands.
+
+- Issue #7245: Add a SIGINT handler in pdb that allows to break a program again
+ after a "continue" command.
+
+- Add the "interact" pdb command.
+
+- Issue #7905: Actually respect the keyencoding parameter to shelve.Shelf.
+
+- Issue #1569291: Speed up array.repeat().
+
+- 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.
+
+- 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 #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.
+
+- 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
+-----
+
+- Issue #10557: Added a new API function, PyUnicode_TransformDecimalToASCII(),
+ which transforms non-ASCII decimal digits in a Unicode string to their ASCII
+ equivalents.
+
+- 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 #10255: Fix reference leak in Py_InitializeEx(). Patch by Neil
+ Schemenauer.
+
+- structseq.h is now included in Python.h.
+
+- Loosen PyArg_ValidateKeywordArguments to allow dict subclasses.
+
+Tests
+-----
+
+- 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
+-------------
+
+- Issue #10299: List the built-in functions in a table in functions.rst.
+
+
+What's New in Python 3.2 Alpha 4?
+=================================
+
+*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 keep traceback
+ data (including local variables caught in the stack trace) alive infinitely.
+
+- Issue #10186: Fix the SyntaxError caret when the offset is equal to the length
+ of the offending line.
+
+- Issue #10089: Add support for arbitrary -X options on the command line. They
+ can be retrieved through a new attribute ``sys._xoptions``.
+
+- 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 #9862: Compensate for broken PIPE_BUF in AIX by hard coding its value as
+ the default 512 when compiling on AIX.
+
+- Use locale encoding instead of UTF-8 to encode and decode filenames if
+ Py_FileSystemDefaultEncoding is not set.
+
+- Issue #10095: fp_setreadl() doesn't reopen the file, instead reuse the file
+ descriptor.
+
+- Issue #9418: Moved private string methods ``_formatter_parser`` and
+ ``_formatter_field_name_split`` into a new ``_string`` module.
+
+- Issue #9992: Remove PYTHONFSENCODING environment variable.
+
+Library
+-------
+
+- Issue #10465: fix broken delegating of attributes by gzip._PaddedFile.
+
+- Issue #10356: Decimal.__hash__(-1) should return -2.
+
+- Issue #1553375: logging: Added stack_info kwarg to display stack information.
+
+- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru.
+
+- Fix Fraction.__hash__ so that Fraction.__hash__(-1) is -2. (See also issue
+ #10356.)
+
+- Issue #4471: Add the IMAP.starttls() method to enable encryption on standard
+ IMAP4 connections. Original patch by Lorenzo M. Catucci.
+
+- Issue #1466065: Add 'validate' option to base64.b64decode to raise an error if
+ there are non-base64 alphabet characters in the input.
+
+- Issue #10386: Add __all__ to token module; this simplifies importing in
+ tokenize module and prevents leaking of private names through ``import *``.
+
+- Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by Lorenzo
+ M. Catucci.
+
+- Fix IMAP.login() to work properly.
+
+- 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 #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 #10022: The dictionary returned by the ``getpeercert()`` method of SSL
+ sockets now has additional items such as ``issuer`` and ``notBefore``.
+
+- ``usenetrc`` is now false by default for NNTP objects.
+
+- Issue #1926: Add support for NNTP over SSL on port 563, as well as STARTTLS.
+ Patch by Andrew Vant.
+
+- Issue #10335: Add tokenize.open(), detect the file encoding using
+ tokenize.detect_encoding() and open it in read only mode.
+
+- 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 #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 #10329: The trace module writes reports using the input Python script
+ encoding, instead of the locale encoding. Patch written by Alexander
+ Belopolsky.
+
+- Issue #10126: Fix distutils' test_build when Python was built with
+ --enable-shared.
+
+- Issue #9281: Prevent race condition with mkdir in distutils. Patch by
+ Arfrever.
+
+- Issue #10229: Fix caching error in gettext.
+
+- Issue #10252: Close file objects in a timely manner in distutils code and
+ tests. Patch by Brian Brazil, completed by Éric Araujo.
+
+- Issue #10180: Pickling file objects is now explicitly forbidden, since
+ unpickling them produced nonsensical results.
+
+- Issue #10311: The signal module now restores errno before returning from its
+ low-level signal handler. Patch by Hallvard B Furuseth.
+
+- Issue #10282: Add a ``nntp_implementation`` attribute to NNTP objects.
+
+- Issue #10283: Add a ``group_pattern`` argument to NNTP.list().
+
+- Issue #10155: Add IISCGIHandler to wsgiref.handlers to support IIS CGI
+ environment better, and to correct unicode environment values for WSGI 1.0.1.
+
+- Issue #10281: nntplib now returns None for absent fields in the OVER/XOVER
+ response, instead of raising an exception.
+
+- 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 #10280: NNTP.nntp_version should reflect the highest version advertised
+ by the server.
+
+- Issue #10184: Touch directories only once when extracting a tarfile.
+
+- Issue #10199: New package, ``turtledemo`` now contains selected demo scripts
+ that were formerly found under Demo/turtle.
+
+- Issue #10265: Close file objects explicitly in sunau. 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.
+
+- Issue #10110: Queue objects didn't recognize full queues when the maxsize
+ parameter had been reduced.
+
+- Issue #10160: Speed up operator.attrgetter. Patch by Christos Georgiou.
+
+- logging: Added style option to basicConfig() to allow %, {} or $-formatting.
+
+- Issue #5729: json.dumps() now supports using a string such as '\t' for
+ pretty-printing multilevel objects.
+
+- Issue #10253: FileIO leaks a file descriptor when trying to open a file for
+ append that isn't seekable. 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 #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.
+
+- Issue #5975: Add csv.unix_dialect class.
+
+- Issue #7761: telnetlib.interact failures on Windows fixed.
+
+- logging: Added style option to Formatter to allow %, {} or $-formatting.
+
+- 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 #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 #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.
+
+- 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 #1675951: Allow GzipFile to work with unseekable file objects. Patch by
+ Florian Festi.
+
+- Logging: Added QueueListener class to facilitate logging usage for
+ performance-critical threads.
+
+- Issue #9916: Add some missing errno symbols.
+
+- Issue #9877: Expose sysconfig.get_makefile_filename()
+
+- logging: Added hasHandlers() method to Logger and LoggerAdapter.
+
+- Issue #9908: Fix os.stat() on bytes paths under Windows 7.
+
+- Issue #2643: msync() is not called anymore when deallocating an open mmap
+ object, only munmap().
+
+- logging: Changed LoggerAdapter implementation internally, to make it easier to
+ subclass in a useful way.
+
+- 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 #1686: Fix string.Template when overriding the pattern attribute.
+
+- 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 #1730136: Fix the comparison between a tk.font.Font and an object of
+ another kind.
+
+- Issue #9441: logging has better coverage for rotating file handlers.
+
+- Issue #9865: collections.OrderedDict now has a __sizeof__ method.
+
+- Issue #9854: The default read() implementation in io.RawIOBase now handles
+ non-blocking readinto() returning None correctly.
+
+- Issue #1552: socket.socketpair() now returns regular socket.socket objects
+ supporting the whole socket API (rather than the "raw" _socket.socket
+ objects).
+
+- Issue #9853: Fix the signature of SSLSocket.recvfrom() and SSLSocket.sendto()
+ to match the corresponding socket methods.
+
+- Issue #9840: Added a decorator to reprlib for wrapping __repr__ methods to make
+ them handle recursive calls within the same thread.
+
+- logging: Enhanced HTTPHandler with secure and credentials initializers.
+
+- Issue #767645: Set os.path.supports_unicode_filenames to True on Mac OS X.
+
+- Issue #9837: The read() method of ZipExtFile objects (as returned by
+ ZipFile.open()) could return more bytes than requested.
+
+- Issue #9826: OrderedDict.__repr__ can now handle self-referential values:
+ d['x'] = d.
+
+- 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.
+
+- 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 #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 #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.
+
+- The pprint module now supports printing OrderedDicts in their given order
+ (formerly, it would sort the keys).
+
+- Logging: Added QueueHandler class to facilitate logging usage with
+ multiprocessing.
+
+- 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 #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 #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 #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.
+
+- Updates to the random module:
+
+ * Document which parts of the module are guaranteed to stay the same across
+ versions and which parts are subject to change.
+
+ * 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.
+
+ * 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.
+
+ * Improved documentation of arguments to randrange(). Issue #9379.
+
+- collections.OrderedDict now supports a new method for repositioning keys to
+ either end.
+
+- 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 #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 #7566: Implement os.path.sameopenfile for Windows.
+
+- 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).
+
+- 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.
+
+- A new package ``concurrent.futures`` as defined by PEP 3148.
+
+C-API
+-----
+
+- Add PyErr_SyntaxLocationEx, which supports passing a column offset.
+
+- Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or
+ PySequence_DelSlice when the object doesn't have any mapping operations
+ defined.
+
+Tools/Demos
+-----------
+
+- 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.
+
+Tests
+-----
+
+- Issue #9308: Added tests for importing encoded modules that do not
+ depend on specific stdlib modules being encoded in a certain way.
+
+- 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 #9978: Wait until subprocess completes initialization. (Win32KillTests
+ in test_os)
+
+- Issue #7110: regrtest now sends test failure reports and single-failure
+ tracebacks to stderr rather than stdout.
+
+- Issue #9628: fix runtests.sh -x option so more than one test can be excluded.
+
+- Issue #9899: Fix test_tkinter.test_font on various platforms. Patch by Ned
+ Deily.
+
+- Issue #9894: Do not hardcode ENOENT in test_subprocess.
+
+- Issue #9315: Added tests for the trace module. Patch by Eli Bendersky.
+
+- Issue #9323: Make test.regrtest.__file__ absolute, this was not always the
+ case when running profile or trace, for example.
+
+- Issue #9568: Fix test_urllib2_localnet on OS X 10.3.
+
+Build
+-----
+
+- Issue #10062: Allow building on platforms which do not have sem_timedwait.
+
+- Issue #10054: Some platforms provide uintptr_t in inttypes.h. Patch by Akira
+ Kitada.
+
+- Issue #10055: Make json C89-compliant in UCS4 mode.
+
+- Issue #9552: Avoid unnecessary rebuild of OpenSSL. (Windows)
+
+- Issue #1633863: Don't ignore $CC under AIX.
+
+- Issue #9810: Compile bzip2 source files in Python's project file directly. It
+ used to be built with bzip2's makefile.
+
+- Issue #9848: Stopping trying to build _weakref in setup.py as it is a built-in
+ module.
+
+- 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.
+
+- Issue #941346: Improve the build process under AIX and allow Python to be
+ built as a shared library. Patch by Sébastien Sablé.
+
+- Issue #4026: Make the fcntl extension build under AIX. Patch by Sébastien
+ Sablé.
+
+- 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.
+
+
+What's New in Python 3.2 Alpha 2?
+=================================
+
+*Release date: 05-Sep-2010*
+
+Core and Builtins
+-----------------
+
+- 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 #9766: Rename poorly named variables exposed by _warnings to prevent
+ confusion with the proper variables names from 'warnings' itself.
+
+- Issue #9212: dict_keys and dict_items now provide the isdisjoint() method, to
+ conform to the Set ABC. Patch by Daniel Urban.
+
+- Issue #9737: Fix a crash when trying to delete a slice or an item from a
+ memoryview object.
+
+- 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 #7415: PyUnicode_FromEncodedObject() now uses the new buffer API
+ properly. Patch by Stefan Behnel.
+
+- Issue #5553: The Py_LOCAL_INLINE macro now results in inlining on most
+ platforms. Previously, it inlined only when using Microsoft Visual C.
+
+- Issue #9712: Fix tokenize on identifiers that start with non-ascii names.
+
+- Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t.
+
+- 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 #9666: Only catch AttributeError in hasattr(). All other exceptions that
+ occur during attribute lookup are now propagated to the caller.
+
+- Issue #8622: Add PYTHONFSENCODING environment variable to override the
+ filesystem encoding.
+
+- 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 #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 #8063: Call _PyGILState_Init() earlier in Py_InitializeEx().
+
+- Issue #9612: The set object is now 64-bit clean under Windows.
+
+- 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 #9599: Create PySys_FormatStdout() and PySys_FormatStderr() functions to
+ write a message formatted by PyUnicode_FromFormatV() to sys.stdout and
+ sys.stderr.
+
+- Issue #9542: Create PyUnicode_FSDecoder() function, a ParseTuple converter:
+ decode bytes objects to unicode using PyUnicode_DecodeFSDefaultAndSize(); str
+ objects are output as-is.
+
+- 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 #9425: Create PyErr_WarnFormat() function, similar to PyErr_WarnEx() but
+ use PyUnicode_FromFormatV() to format the warning message.
+
+- Issue #8530: Prevent stringlib fastsearch from reading beyond the front of an
+ array.
+
+- Issue #5319: Print an error if flushing stdout fails at interpreter shutdown.
+
+- Issue #9337: The str() of a float or complex number is now identical to its
+ repr().
+
+- Issue #9416: Fix some issues with complex formatting where the output with no
+ type specifier failed to match the str output:
+
+ - format(complex(-0.0, 2.0), '-') omitted the real part from the output,
+ - format(complex(0.0, 2.0), '-') included a sign and parentheses.
+
+Extension Modules
+-----------------
+
+- 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 #6608: time.asctime is now checking struct tm fields its input
+ before passing it to the system asctime. Patch by MunSic Jeong.
+
+- Issue #8734: Avoid crash in msvcrt.get_osfhandle() when an invalid file
+ descriptor is provided. Patch by Pascal Chambon.
+
+- Issue #7736: Release the GIL around calls to opendir() and closedir() in the
+ posix module. Patch by Marcin Bachry.
+
+- 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 #1027206: Support IDNA in gethostbyname, gethostbyname_ex, getaddrinfo
+ and gethostbyaddr. getnameinfo is now restricted to numeric addresses as
+ input.
+
+- Issue #9214: Set operations on a KeysView or ItemsView in collections now
+ correctly return a set. Patch by Eli Bendersky.
+
+- Issue #5737: Add Solaris-specific mnemonics in the errno module. Patch by
+ Matthew Ahrens.
+
+- Restore GIL in nis_cat in case of error. Decode NIS data to fs encoding, using
+ the surrogate error handler.
+
+- Issue #665761: ``functools.reduce()`` will no longer mask exceptions other
+ than ``TypeError`` raised by the iterator argument.
+
+- Issue #9570: Use PEP 383 decoding in os.mknod and os.mkfifo.
+
+- Issue #6915: Under Windows, os.listdir() didn't release the Global Interpreter
+ Lock around all system calls. Original patch by Ryan Kelly.
+
+- 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 #477863: Emit a ResourceWarning at shutdown if gc.garbage is not empty.
+
+- Issue #6869: Fix a refcount problem in the _ctypes extension.
+
+- Issue #5504: ctypes should now work with systems where mmap can't be
+ PROT_WRITE and PROT_EXEC.
+
+- Issue #9507: Named tuple repr will now automatically display the right name in
+ a tuple subclass.
+
+- Issue #9324: Add parameter validation to signal.signal on Windows in order to
+ prevent crashes.
+
+- Issue #9526: Remove some outdated (int) casts that were preventing the array
+ module from working correctly with arrays of more than 2**31 elements.
+
+- Fix memory leak in ssl._ssl._test_decode_cert.
+
+- Issue #8065: Fix memory leak in readline module (from failure to free the
+ result of history_get_history_state()).
+
+- Issue #9450: Fix memory leak in readline.replace_history_item and
+ readline.remove_history_item for readline version >= 5.0.
+
+- Issue #8105: Validate file descriptor passed to mmap.mmap on Windows.
+
+- Issue #8046: Add context manager protocol support and .closed property to mmap
+ objects.
+
+Library
+-------
+
+- 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 #1100562: Fix deep-copying of objects derived from the list and dict
+ types. Patch by Michele Orrù and Björn Lindqvist.
+
+- Issue #9753: Fixed socket.dup, which did not always work correctly on Windows.
+
+- Issue #9421: Made the get<type> methods consistently accept the vars and
+ default arguments on all parser classes.
+
+- Issue #7005: Fixed output of None values for RawConfigParser.write and
+ ConfigParser.write.
+
+- 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 #808164: Fixed socket.close to avoid references to globals, to avoid
+ issues when socket.close is called from a __del__ method.
+
+- Issue #9706: ssl module provides a better error handling in various
+ circumstances.
+
+- Issue #1868: Eliminate subtle timing issues in thread-local objects by getting
+ rid of the cached copy of thread-local attribute dictionary.
+
+- Issue #1512791: In setframerate() in the wave module, non-integral frame rates
+ are rounded to the nearest integer.
+
+- Issue #8797: urllib2 does a retry for Basic Authentication failure instead of
+ falling into recursion.
+
+- Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four
+ character years even if the message contains RFC822 two character years.
+
+- Issue #8750: Fixed MutableSet's methods to correctly handle reflexive
+ operations on its self, namely x -= x and x ^= x.
+
+- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing error
+ handling when accepting a new connection.
+
+- 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 #658749: asyncore's connect() method now correctly interprets winsock
+ errors.
+
+- Issue #9501: Fixed logging regressions in cleanup code.
+
+- Fix functools.total_ordering() to skip methods inherited from object.
+
+- Issue #9572: Importlib should not raise an exception if a directory it thought
+ it needed to create was done concurrently by another process.
+
+- Issue #9617: Signals received during a low-level write operation aren't
+ ignored by the buffered IO layer anymore.
+
+- Issue #843590: Make "macintosh" an alias to the "mac_roman" encoding.
+
+- Create os.fsdecode(): decode from the filesystem encoding with surrogateescape
+ error handler, or strict error handler on Windows.
+
+- Issue #3488: Provide convenient shorthand functions ``gzip.compress`` and
+ ``gzip.decompress``. Original patch by Anand B. Pillai.
+
+- 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 #8866: parameters passed to socket.getaddrinfo can now be specified as
+ single keyword arguments.
+
+- Address XXX comment in dis.py by having inspect.py prefer to reuse the dis.py
+ compiler flag values over defining its own.
+
+- 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 #9567: functools.update_wrapper now adds a __wrapped__ attribute
+ pointing to the original callable.
+
+- Issue #3445: functools.update_wrapper now tolerates missing attributes on
+ wrapped callables.
+
+- Issue #5867: Add abc.abstractclassmethod and abc.abstractstaticmethod.
+
+- Issue #9605: posix.getlogin() decodes the username with file filesystem
+ encoding and surrogateescape error handler. Patch written by David Watson.
+
+- Issue #9604: posix.initgroups() encodes the username using the fileystem
+ encoding and surrogateescape error handler. Patch written by David Watson.
+
+- 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 #7647: The posix module now has the ST_RDONLY and ST_NOSUID constants,
+ for use with the statvfs() function. Patch by Adam Jackson.
+
+- 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 #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 #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 #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 #9452: Add read_file, read_string, and read_dict to the configparser
+ API; new source attribute to exceptions.
+
+- Issue #6231: Fix xml.etree.ElementInclude to include the tail of the current
+ node.
+
+- Issue #8047: Fix the xml.etree serializer to return bytes by default. Use
+ ``encoding="unicode"`` to generate a Unicode string.
+
+- 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 #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 #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 #2944: asyncore doesn't handle connection refused correctly.
+
+- Issue #4184: Private attributes on smtpd.SMTPChannel made public and deprecate
+ the private attributes. Add tests for smtpd module.
+
+- Issue #3196: email header decoding is now forgiving if an RFC2047 encoded word
+ encoded in base64 is lacking padding.
+
+- 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 #7372: Fix pstats regression when stripping paths from profile data
+ generated with the profile module.
+
+- Issue #9428: Fix running scripts with the profile/cProfile modules from the
+ command line.
+
+- Issue #7781: Fix restricting stats by entry counts in the pstats interactive
+ browser.
+
+- Issue #9209: Do not crash in the pstats interactive browser on invalid regular
+ expressions.
+
+- Update collections.OrderedDict to match the implementation in Py2.7 (based on
+ lists instead of weakly referenced Link objects).
+
+- Issue #8397: Raise an error when attempting to mix iteration and regular reads
+ on a BZ2File object, rather than returning incorrect results.
+
+- Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when
+ re-initializing a buffered IO object by calling its ``__init__`` method.
+
+- 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 #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
+-----------
+
+- Fix ``Tools/scripts/checkpyc.py`` after PEP 3147.
+
+- Issue #8867: Fix ``Tools/scripts/serve.py`` to work with files containing
+ non-ASCII content.
+
+Tests
+-----
+
+- Issue #9601: Provide a test case for ftplib.parse257.
+
+- Issue #8857: Provide a test case for socket.getaddrinfo.
+
+- Issue #7564: Skip test_ioctl if another process is attached to /dev/tty.
+
+- Issue #8433: Fix test_curses failure with newer versions of ncurses.
+
+- Issue #9496: Provide a test suite for the rlcompleter module. Patch by
+ Michele Orrù.
+
+- Issue #8687: provide a test suite for sched.py module.
+
+Build
+-----
+
+- Issue #1303434: Generate ZIP file containing all PDBs.
+
+- Issue #9193: PEP 3149 is accepted.
+
+- 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 #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 #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 #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 #7309: Fix unchecked attribute access when converting
+ 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 #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 #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 #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 #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 #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.
+
+- 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 #1757126: Fix the cyrillic-asian alias for the ptcp154 encoding.
+
+- Issue #6970: Remove redundant calls when comparing objects that don't
+ implement the relevant rich comparison methods.
+
+- 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 #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 #7065: Fix a crash in bytes.maketrans and bytearray.maketrans when using
+ byte values greater than 127. Patch by Derk Drukker.
+
+- 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 #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 #9214: Set operations on KeysView or ItemsView in the collections
- module now correctly return a set. (Patch by Eli Bendersky.)
+- 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.
-- Issue #9617: Signals received during a low-level write operation aren't
- ignored by the buffered IO layer anymore.
+Library
+-------
-- Issue #9605: posix.getlogin() decodes the username with file filesystem
- encoding and surrogateescape error handler. Patch written by David Watson.
+- In pdb, when Ctrl-C is entered while defining commands for a breakpoint, the
+ old commands are restored.
-- Issue #9603: posix.ttyname() and posix.ctermid() decode the terminal name
- using the filesystem encoding and surrogateescape error handler. Patch
- written by David Watson.
+- 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).
-- 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.
+- The pdb command "source" has been added. It displays the source code for a
+ given object, if possible.
-- 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).
+- The pdb command "longlist" has been added. It displays the whole source code
+ for the current function.
-- 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 #1503502: Make pdb.Pdb easier to subclass by putting message and error
+ output into methods.
-- Issue #6915: Under Windows, os.listdir() didn't release the Global
- Interpreter Lock around all system calls. Original patch by Ryan Kelly.
+- Issue #809887: Make the output of pdb's breakpoint deletions more consistent;
+ emit a message when a breakpoint is enabled or disabled.
-- 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 #5294: Fix the behavior of pdb's "continue" command when called in the
+ top-level debugged frame.
-- 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 #5727: Restore the ability to use readline when calling into pdb in
+ doctests.
-- Issue #2944: asyncore doesn't handle connection refused correctly.
+- 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 #3196: email header decoding is now forgiving if an RFC2047
- encoded word encoded in base64 is lacking padding.
+- Issue #8048: Prevent doctests from failing when sys.displayhook has been
+ reassigned.
-- Issue #8447: Make distutils.sysconfig follow symlinks in the path to
- the interpreter executable. This fixes a failure of test_httpservers
- on OS X.
+- Issue #8015: In pdb, do not crash when an empty line is entered as a
+ breakpoint command.
-- Issue #7372: Fix pstats regression when stripping paths from profile
- data generated with the profile module.
+- In pdb, allow giving a line number to the "until" command.
-- Issue #4108: In urllib.robotparser, if there are multiple 'User-agent: *'
- entries, consider the first one.
+- 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 #8397: Raise an error when attempting to mix iteration and regular
- reads on a BZ2File object, rather than returning incorrect results.
+- Issue #4179: In pdb, allow "list ." as a command to return to the currently
+ debugged line.
-- Issue #7909: Do not touch paths with the special prefixes ``\\.\``
- or ``\\?\`` in ntpath.normpath().
+- Issue #4108: In urllib.robotparser, if there are multiple ``User-agent: *``
+ entries, consider the first one.
-- Issue #5294: Fix the behavior of pdb's "continue" command when called
- in the top-level debugged frame.
+- Issue #6630: Allow customizing regex flags when subclassing the
+ string.Template class.
-- Issue #5727: Restore the ability to use readline when calling into pdb
- in doctests.
+- Issue #9411: Allow specifying an encoding for config files in the configparser
+ 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.
+- Issue #1682942: Improvements to configparser: support alternate delimiters,
+ alternate comment prefixes and empty lines in values.
-- Issue #8048: Prevent doctests from failing when sys.displayhook has
- been reassigned.
+- Issue #9354: Provide getsockopt() in asyncore's file_wrapper.
-- Issue #8015: In pdb, do not crash when an empty line is entered as
- a breakpoint command.
+- Issue #8966: ctypes: Remove implicit bytes-unicode conversion.
-- Issue #5146: Handle UID THREAD command correctly in imaplib.
+- Issue #9378: python -m pickle <pickle file> will now load and display the
+ first object in the pickle file.
-- Issue #5147: Fix the header generated for cookie files written by
- http.cookiejar.MozillaCookieJar.
+- 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 #8198: In pydoc, output all help text to the correct stream
- when sys.stdout is reassigned.
+- Issue #9384: ``python -m tkinter`` will now display a simple demo applet.
-- Issue #8230: Fix Lib/test/sortperf.py.
+- 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 #7395: Fix tracebacks in pstats interactive browser.
+- Issue #7113: Speed up loading in configparser. Patch by Łukasz Langa.
-- Issue #1713: Fix os.path.ismount(), which returned true for symbolic links
- across devices.
+- 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 #8826: Properly load old-style "expires" attribute in http.cookies.
+- 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 #1690103: Fix initial namespace for code run with trace.main().
+- 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 #9354: Provide getsockopt() in asyncore's file_wrapper.
+- Issue #7895: platform.mac_ver() no longer crashes after calling os.fork().
-- Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when
- re-initializing a buffered IO object by calling its ``__init__`` method.
+- Issue #9323: Fixed a bug in trace.py that resulted in loosing the name of the
+ script being traced. Patch by Eli Bendersky.
-- 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 #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.
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