From: Éric Araujo Date: Mon, 21 Mar 2011 02:15:22 +0000 (+0100) Subject: Fix some issue references in NEWS X-Git-Tag: v3.2.1b1~241 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=d8c73c650ce5554f3757f17cf0f979a897decf80;p=python Fix some issue references in NEWS --- d8c73c650ce5554f3757f17cf0f979a897decf80 diff --cc Misc/NEWS index 5dc8a64918,461afd7df9..0bf7550864 --- a/Misc/NEWS +++ b/Misc/NEWS @@@ -369,200 -360,123 +369,200 @@@ What's New in Python 3.2 Release Candid 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. +Library +------- -- Restore GIL in nis_cat in case of error. +- 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 #9712: Fix tokenize on identifiers that start with non-ascii names. +- 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 #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t. +- 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 #5319: Print an error if flushing stdout fails at interpreter - shutdown. +- Add encoding and errors arguments to urllib.parse_qs() and urllib.parse_qsl(). -- 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 #10899: No function type annotations in the standard library. Removed + function type annotations from _pyio.py. -- Issue #83755: Implicit set-to-frozenset conversion was not thread-safe. +- Issue #10875: Update Regular Expression HOWTO; patch by 'SilentGhost'. -- 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 #10872: The repr() of TextIOWrapper objects now includes the mode + if available. -- Issue #9416: Fix some issues with complex formatting where the - output with no type specifier failed to match the str output: +- Issue #10869: Fixed bug where ast.increment_lineno modified the root node + twice. - - 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 #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 #7616: Fix copying of overlapping memoryview slices with the Intel - compiler. +- Issue #10859: Make ``contextlib.GeneratorContextManager`` officially + private by renaming it to ``_GeneratorContextManager``. -- 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 #10042: Fixed the total_ordering decorator to handle cross-type + comparisons that could lead to infinite recursion. -- 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 #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 #9058: Remove assertions about INT_MAX in UnicodeDecodeError. +- email.header.Header was incorrectly encoding folding white space when + rfc2047-encoding header values with embedded newlines, leaving them without + folding whitespace. It now uses the continuation_ws, as it does for + continuation lines that it creates itself. -- Issue #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 #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. -- In the str.format(), raise a ValueError when indexes to arguments are too - large. +- Issue #7858: Raise an error properly when os.utime() fails under Windows + on an existing file. -- Issue #8766: Initialize _warnings module before importing the first module. - Fix a crash if an empty directory called "encodings" exists in sys.path. +- Issue #3839: wsgiref should not override a Content-Length header set by + the application. Initial patch by Clovis Fabricio. -- PyObject_Dump() encodes unicode objects to utf8 with backslashreplace - (instead of strict) error handler to escape surrogates +- Issue #10492: bdb.Bdb.run() only traces the execution of the code, not the + compilation (if the input is a string). -- Issue #8124: PySys_WriteStdout() and PySys_WriteStderr() don't execute - indirectly Python signal handlers anymore because mywrite() ignores - exceptions (KeyboardInterrupt) +- Issue #7995: When calling accept() on a socket with a timeout, the returned + socket is now always blocking, regardless of the operating system. -- Issue #8092: Fix PyUnicode_EncodeUTF8() to support error handler producing - unicode string (eg. backslashreplace) +- Issue #10756: atexit normalizes the exception before displaying it. Patch by + Andreas Stührk. -- Issue #8014: Setting a T_UINT or T_PYSSIZET attribute of an object with - PyMemberDefs could produce an internal error; raise TypeError instead. +- Issue #10790: email.header.Header.append's charset logic now works correctly + for charsets whose output codec is different from its input codec. -- Issue #8417: Raise an OverflowError when an integer larger than sys.maxsize is - passed to bytes or bytearray. +- Issue #10819: SocketIO.name property returns -1 when its closed, instead of + raising a ValueError, to fix repr(). -- Issue #8329: Don't return the same lists from select.select when no fds are - changed. +- 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). -- Raise a TypeError when trying to delete a T_STRING_INPLACE struct member. +- Issue #6643: Reinitialize locks held within the threading module after fork to + avoid a potential rare deadlock or crash on some platforms. -- Issue #8226: sys.setfilesystemencoding() raises a LookupError if the encoding - is unknown +- Issue #10806, issue #9905: Fix subprocess pipes when some of the standard file + descriptors (0, 1, 2) are closed in the parent process. Initial patch by Ross + Lagerwall. + +- `unittest.TestCase` can be instantiated without a method name; for simpler + exploration from the interactive interpreter. + +- Issue #10798: Reject supporting concurrent.futures if the system has too + few POSIX semaphores. + +- Issue #10807: Remove base64, bz2, hex, quopri, rot13, uu and zlib codecs from + the codec aliases. They are still accessible via codecs.lookup(). + +- Issue #10801: In zipfile, support different encodings for the header and the + filenames. + +- Issue #6285: IDLE no longer crashes on missing help file; patch by Scott + David Daniels. + +- Fix collections.OrderedDict.setdefault() so that it works in subclasses that + define __missing__(). + +- Issue #10786: unittest.TextTestRunner default stream no longer bound at import + time. `sys.stderr` now looked up at instantiation time. Fix contributed by + Mark Roddy. + - - Issue #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 ++- 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 #10738: Fix webbrowser.Opera.raise_opts. + +- Issue #9824: SimpleCookie now encodes , and ; in values to cater to how + browsers actually parse cookies. + +- Issue #9333: os.symlink now available regardless of user privileges. The + function now raises OSError on Windows >=6.0 when the user is unable to create + symbolic links. XP and 2003 still raise NotImplementedError. + +- Issue #10783: struct.pack() no longer implicitly encodes unicode to UTF-8. + +- Issue #10730: Add SVG mime types to mimetypes module. -- Issue #1583863: An str subclass can now override the __str__ method +- Issue #10768: Make the Tkinter ScrolledText widget work again. + +- Issue #10777: Fix "dictionary changed size during iteration" bug in + ElementTree register_namespace(). + +- Issue #10626: test_logging now preserves logger disabled states. + +- Issue #10774: test_logging now removes temp files created during tests. + +- Issue #5258/#10642: if site.py encounters a .pth file that generates an error, + it now prints the filename, line number, and traceback to stderr and skips + the rest of that individual file, instead of stopping processing entirely. + +- Issue #10763: subprocess.communicate() closes stdout and stderr if both are + pipes (bug specific to Windows). + +- Issue #1693546: fix email.message RFC 2231 parameter encoding to be in better + compliance (no "s around encoded values). + +- Improved the diff message in the unittest module's assertCountEqual(). + +- Issue #1155362: email.utils.parsedate_tz now handles a missing space before + the '-' of a timezone field as well as before a '+'. + +- Issue #4871: The zipfile module now gives a more useful error message if + an attempt is made to use a string to specify the archive password. + +- Issue #10750: The ``raw`` attribute of buffered IO objects is now read-only. -- Issue #7072: isspace(0xa0) is true on Mac OS X +- Deprecated assertDictContainsSubset() in the unittest module. C-API ----- @@@ -655,2141 -493,237 +655,2141 @@@ Core and Builtin Library ------- -- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru. +- Issue #3243: Support iterable bodies in httplib. Patch Contributions by + Xuanji Li and Chris AtLee. -- Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by - Lorenzo M. Catucci. +- Issue #10611: SystemExit exception will no longer kill a unittest run. -- Fix IMAP.login() to work properly. +- Issue #9857: It is now possible to skip a test in a setUp, tearDown or clean + up function. -- Issue #10126: Fix distutils' test_build when Python was built with - --enable-shared. +- Issue #10573: use actual/expected consistently in unittest methods. + The order of the args of assertCountEqual is also changed. -- Fix typo in one sdist option (medata-check). +- Issue #9286: email.utils.parseaddr no longer concatenates blank-separated + words in the local part of email addresses, thereby preserving the input. -- Issue #9199: Fix incorrect use of distutils.cmd.Command.announce. +- 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 #1718574: Fix options that were supposed to accept arguments but did - not in build_clib. +- Issue #10404: Use ctl-button-1 on OSX for the context menu in Idle. -- Issue #9281: Prevent race condition with mkdir in distutils. Patch by - Arfrever. +- Issue #9907: Fix tab handling on OSX when using editline by calling + rl_initialize first, then setting our custom defaults, then reading .editrc. -- Issue #10229: Fix caching error in gettext. +- Issue #4188: Avoid creating dummy thread objects when logging operations + from the threading module (with the internal verbose flag activated). -- Issue #10252: Close file objects in a timely manner in distutils code and - tests. Patch by Brian Brazil, completed by Éric Araujo. +- Issue #10711: Remove HTTP 0.9 support from http.client. The ``strict`` + parameter to HTTPConnection and friends is deprecated. -- Issue #10311: The signal module now restores errno before returning from - its low-level signal handler. Patch by Hallvard B Furuseth. +- Issue #9721: Fix the behavior of urljoin when the relative url starts with a + ';' character. Patch by Wes Chow. -- The keyword only restriction for the places argument in - unittest.TestCase.assert[Not]AlmostEqual methods has been removed. +- Issue #10714: Limit length of incoming request in http.server to 65536 bytes + for security reasons. Initial patch by Ross Lagerwall. -- Issue #6706: asyncore accept() method no longer raises EWOULDBLOCK/ECONNABORTED - on incomplete connection attempt but returns None instead. +- Issue #9558: Fix distutils.command.build_ext with VS 8.0. -- Issue #10266: uu.decode didn't close in_file explicitly when it was given - as a filename. Patch by Brian Brazil. +- Issue #10667: Fast path for collections.Counter(). -- Issue #10246: uu.encode didn't close file objects explicitly when filenames - were given to it. Patch by Brian Brazil. +- Issue #10695: passing the port as a string value to telnetlib no longer + causes debug mode to fail. -- Issue #10253: FileIO leaks a file descriptor when trying to open a file - for append that isn't seekable. Patch by Brian Brazil. +- Issue #1078919: add_header now automatically RFC2231 encodes parameters + that contain non-ascii values. -- 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 #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 #7761: telnetlib.interact failures on Windows fixed. +- Issue #10107: Warn about unsaved files in IDLE on OSX. -- Issue #5117: Case normalization was needed on ntpath.relpath(). And - fixed root directory issue on posixpath.relpath(). (Ported working fixes - from ntpath) +- 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 #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 #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 #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the - current directory was deleted. Patch written by W. Trevor King. +- Issue #1731717: Fixed the problem where subprocess.wait() could cause an + OSError exception when The OS had been told to ignore SIGCLD in our process + or otherwise not wait for exiting child processes. -- Issue #9759: GzipFile now raises ValueError when an operation is attempted - after the file is closed. Patch by Jeffrey Finkelstein. +Tests +----- -- Issue #9042: Fix interaction of custom translation classes and caching in - gettext. +- Issue #775964: test_grp now skips YP/NIS entries instead of failing when + encountering them. -- Issue #9065: tarfile no longer uses "root" as the default for the uname and - gname field. +Tools/Demos +----------- -- Issue #8980: Fixed a failure in distutils.command check that was shadowed - by an environment that does not have docutils. Patch by Arfrever. +- Issue #6075: IDLE on Mac OS X now works with both Carbon AquaTk and + Cocoa AquaTk. -- Issue #1050268: parseaddr now correctly quotes double quote and backslash - characters that appear inside quoted strings in email addresses. +- Issue #10710: ``Misc/setuid-prog.c`` is removed from the source tree. -- Issue #10004: quoprimime no longer generates a traceback when confronted - with invalid characters after '=' in a Q-encoded word. +- Issue #10706: Remove outdated script runtests.sh. Either ``make test`` + or ``python -m test`` should be used instead. -- 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. +Build +----- -- Issue #9936: Fixed executable lines' search in the trace module. +- The Windows build now uses Tcl/Tk 8.5.9 and sqlite3 3.7.4. -- Issue #9928: Properly initialize the types exported by the bz2 module. +- Issue #9234: argparse supports alias names for subparsers. -- Issue #9854: The default read() implementation in io.RawIOBase now - handles non-blocking readinto() returning None correctly. -- Issue #9853: Fix the signature of SSLSocket.recvfrom() and - SSLSocket.sendto() to match the corresponding socket methods. +What's New in Python 3.2 Beta 1? +================================ -- 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. +*Release date: 05-Dec-2010* -- Issue #9826: OrderedDict.__repr__ can now handle self-referential - values: d['x'] = d. +Core and Builtins +----------------- -- 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 #10630: Return dict views from the dict proxy keys()/values()/items() + methods. -- Issue #6656: fix locale.format_string to handle escaped percents - and mappings. +- 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 #1100562: Fix deep-copying of objects derived from the list and - dict types. Patch by Michele Orrù and Björn Lindqvist. +- Issue #1772833: Add the -q command-line option to suppress copyright and + version output in interactive mode. -- Issue #9753: Fixed socket.dup, which did not always work correctly - on Windows. +- Provide an *optimize* parameter in the built-in compile() function. -- Issue #1868: Eliminate subtle timing issues in thread-local objects by - getting rid of the cached copy of thread-local attribute dictionary. +- Fixed several corner case issues on Windows in os.stat/os.lstat related to + reparse points. -- Issue #8797: urllib2 does a retry for Basic Authentication failure instead of - falling into recursion. +- PEP 384 (Defining a Stable ABI) is implemented. -- Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four - character years even if the message contains RFC822 two character years. +- Issue #2690: Range objects support negative indices and slicing. -- Issue #8750: Fixed MutableSet's methods to correctly handle - reflexive operations, namely x -= x and x ^= x. +- Issue #9915: Speed up sorting with a key. -- Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing - error handling when accepting a new connection. +- Issue #8685: Speed up set difference ``a - b`` when source set ``a`` is much + larger than operand ``b``. Patch by Andrew Bennetts. -- Issue #658749: asyncore's connect() method now correctly interprets winsock - errors. +- 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 #10326: unittest.TestCase instances can be pickled. + - - Issue 9926: Wrapped TestSuite subclass does not get __call__ executed. ++- 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 ++- 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 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 . + +- 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 + `_. + +- 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 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.