5 (editors: check NEWS.help for information about editing NEWS using ReST.)
7 What's New in Python 2.5 beta 2?
8 ================================
10 *Release date: XX-JUL-2006*
15 - Bug #1511381: codec_getstreamcodec() in codec.c is corrected to
16 omit a default "error" argument for NULL pointer. This allows
17 the parser to take a codec from cjkcodecs again.
22 - The '_ctypes' extension module now works when Python is configured
23 with the --without-threads option.
25 - Bug #1504333: Make sgmllib support angle brackets in quoted
28 - Bug #853506: Fix IPv6 address parsing in unquoted attributes in
29 sgmllib ('[' and ']' were not accepted).
31 - Fix a bug in the turtle module's end_fill function.
33 - Bug #1510580: The 'warnings' module improperly required that a Warning
34 category be either a types.ClassType and a subclass of Warning. The proper
35 check is just that it is a subclass with Warning as the documentation states.
37 - The compiler module now correctly compiles the new try-except-finally
38 statement (bug #1509132).
40 - The wsgiref package is now installed properly on Unix.
42 - A bug was fixed in logging.config.fileConfig() which caused a crash on
43 shutdown when fileConfig() was called multiple times.
48 - Bug #1512695: cPickle.loads could crash if it was interrupted with
54 - Bug #1513032: 'make install' failed on FreeBSD 5.3 due to lib-old
55 trying to be installed even though it's empty.
60 - Call os.waitpid() at the end of tests that spawn child processes in order
61 to minimize resources (zombies).
66 - Patch #1509163: MS Toolkit Compiler no longer available.
69 What's New in Python 2.5 beta 1?
70 ================================
72 *Release date: 20-JUN-2006*
77 - Patch #1507676: Error messages returned by invalid abstract object operations
78 (such as iterating over an integer) have been improved and now include the
79 type of the offending object to help with debugging.
81 - Bug #992017: A classic class that defined a __coerce__() method that returned
82 its arguments swapped would infinitely recurse and segfault the interpreter.
84 - Fix the socket tests so they can be run concurrently.
86 - Removed 5 integers from C frame objects (PyFrameObject).
87 f_nlocals, f_ncells, f_nfreevars, f_stack_size, f_restricted.
89 - Bug #532646: object.__call__() will continue looking for the __call__
90 attribute on objects until one without one is found. This leads to recursion
91 when you take a class and set its __call__ attribute to an instance of the
92 class. Originally fixed for classic classes, but this fix is for new-style.
93 Removes the infinite_rec_3 crasher.
95 - The string and unicode methods startswith() and endswith() now accept
96 a tuple of prefixes/suffixes to look for. Implements RFE #1491485.
98 - Buffer objects, at the C level, never used the char buffer
99 implementation even when the char buffer for the wrapped object was
100 explicitly requested (originally returned the read or write buffer).
101 Now a TypeError is raised if the char buffer is not present but is
104 - Patch #1346214: Statements like "if 0: suite" are now again optimized
105 away like they were in Python 2.4.
107 - Builtin exceptions are now full-blown new-style classes instead of
108 instances pretending to be classes, which speeds up exception handling
109 by about 80% in comparison to 2.5a2.
111 - Patch #1494554: Update unicodedata.numeric and unicode.isnumeric to
114 - Patch #921466: sys.path_importer_cache is now used to cache valid and
115 invalid file paths for the built-in import machinery which leads to
116 fewer open calls on startup.
118 - Patch #1442927: ``long(str, base)`` is now up to 6x faster for non-power-
119 of-2 bases. The largest speedup is for inputs with about 1000 decimal
120 digits. Conversion from non-power-of-2 bases remains quadratic-time in
121 the number of input digits (it was and remains linear-time for bases
124 - Bug #1334662: ``int(string, base)`` could deliver a wrong answer
125 when ``base`` was not 2, 4, 8, 10, 16 or 32, and ``string`` represented
126 an integer close to ``sys.maxint``. This was repaired by patch
127 #1335972, which also gives a nice speedup.
129 - Patch #1337051: reduced size of frame objects.
131 - PyErr_NewException now accepts a tuple of base classes as its
134 - Patch #876206: function call speedup by retaining allocated frame
137 - Bug #1462152: file() now checks more thoroughly for invalid mode
138 strings and removes a possible "U" before passing the mode to the
141 - Patch #1488312, Fix memory alignment problem on SPARC in unicode
143 - Bug #1487966: Fix SystemError with conditional expression in assignment
145 - WindowsError now has two error code attributes: errno, which carries
146 the error values from errno.h, and winerror, which carries the error
147 values from winerror.h. Previous versions put the winerror.h values
148 (from GetLastError()) into the errno attribute.
150 - Patch #1475845: Raise IndentationError for unexpected indent.
152 - Patch #1479181: split open() and file() from being aliases for each other.
154 - Patch #1497053 & bug #1275608: Exceptions occurring in ``__eq__()``
155 methods were always silently ignored by dictionaries when comparing keys.
156 They are now passed through (except when using the C API function
157 ``PyDict_GetItem()``, whose semantics did not change).
159 - Bug #1456209: In some obscure cases it was possible for a class with a
160 custom ``__eq__()`` method to confuse dict internals when class instances
161 were used as a dict's keys and the ``__eq__()`` method mutated the dict.
162 No, you don't have any code that did this ;-)
167 - Bug #1295808: expat symbols should be namespaced in pyexpat
169 - Patch #1462338: Upgrade pyexpat to expat 2.0.0
171 - Change binascii.hexlify to accept a read-only buffer instead of only a char
172 buffer and actually follow its documentation.
174 - Fixed a potentially invalid memory access of CJKCodecs' shift-jis decoder.
176 - Patch #1478788 (modified version): The functional extension module has
177 been renamed to _functools and a functools Python wrapper module added.
178 This provides a home for additional function related utilities that are
179 not specifically about functional programming. See PEP 309.
181 - Patch #1493701: performance enhancements for struct module.
183 - Patch #1490224: time.altzone is now set correctly on Cygwin.
185 - Patch #1435422: zlib's compress and decompress objects now have a
188 - Patch #1454481: thread stack size is now tunable at runtime for thread
189 enabled builds on Windows and systems with Posix threads support.
191 - On Win32, os.listdir now supports arbitrarily-long Unicode path names
192 (up to the system limit of 32K characters).
194 - Use Win32 API to implement os.{access,chdir,chmod,mkdir,remove,rename,rmdir,utime}.
195 As a result, these functions now raise WindowsError instead of OSError.
197 - ``time.clock()`` on Win64 should use the high-performance Windows
198 ``QueryPerformanceCounter()`` now (as was already the case on 32-bit
201 - Calling Tk_Init twice is refused if the first call failed as that
204 - bsddb: added the DB_ARCH_REMOVE flag and fixed db.DBEnv.log_archive() to
205 accept it without potentially using an uninitialized pointer.
207 - bsddb: added support for the DBEnv.log_stat() and DBEnv.lsn_reset() methods
208 assuming BerkeleyDB >= 4.0 and 4.4 respectively. [pybsddb project SF
209 patch numbers 1494885 and 1494902]
211 - bsddb: added an interface for the BerkeleyDB >= 4.3 DBSequence class.
212 [pybsddb project SF patch number 1466734]
214 - bsddb: fix DBCursor.pget() bug with keyword argument names when no data
215 parameter is supplied. [SF pybsddb bug #1477863]
217 - bsddb: the __len__ method of a DB object has been fixed to return correct
218 results. It could previously incorrectly return 0 in some cases.
219 Fixes SF bug 1493322 (pybsddb bug 1184012).
221 - bsddb: the bsddb.dbtables Modify method now raises the proper error and
222 aborts the db transaction safely when a modifier callback fails.
223 Fixes SF python patch/bug #1408584.
225 - bsddb: multithreaded DB access using the simple bsddb module interface
226 now works reliably. It has been updated to use automatic BerkeleyDB
227 deadlock detection and the bsddb.dbutils.DeadlockWrap wrapper to retry
228 database calls that would previously deadlock. [SF python bug #775414]
230 - Patch #1446489: add support for the ZIP64 extensions to zipfile.
232 - Patch #1506645: add Python wrappers for the curses functions
233 is_term_resized, resize_term and resizeterm.
238 - Patch #815924: Restore ability to pass type= and icon= in tkMessageBox
241 - Patch #812986: Update turtle output even if not tracing.
243 - Patch #1494750: Destroy master after deleting children in
246 - Patch #1096231: Add ``default`` argument to Tkinter.Wm.wm_iconbitmap.
248 - Patch #763580: Add name and value arguments to Tkinter variable
251 - Bug #1117556: SimpleHTTPServer now tries to find and use the system's
252 mime.types file for determining MIME types.
254 - Bug #1339007: Shelf objects now don't raise an exception in their
255 __del__ method when initialization failed.
257 - Patch #1455898: The MBCS codec now supports the incremental mode for
258 double-byte encodings.
260 - ``difflib``'s ``SequenceMatcher.get_matching_blocks()`` was changed to
261 guarantee that adjacent triples in the return list always describe
262 non-adjacent blocks. Previously, a pair of matching blocks could end
263 up being described by multiple adjacent triples that formed a partition
264 of the matching pair.
266 - Bug #1498146: fix optparse to handle Unicode strings in option help,
267 description, and epilog.
269 - Bug #1366250: minor optparse documentation error.
271 - Bug #1361643: fix textwrap.dedent() so it handles tabs appropriately;
274 - The wsgiref package has been added to the standard library.
276 - The functions update_wrapper() and wraps() have been added to the functools
277 module. These make it easier to copy relevant metadata from the original
278 function when writing wrapper functions.
280 - The optional ``isprivate`` argument to ``doctest.testmod()``, and the
281 ``doctest.is_private()`` function, both deprecated in 2.4, were removed.
283 - Patch #1359618: Speed up charmap encoder by using a trie structure
286 - The functions in the ``pprint`` module now sort dictionaries by key
287 before computing the display. Before 2.5, ``pprint`` sorted a dictionary
288 if and only if its display required more than one line, although that
289 wasn't documented. The new behavior increases predictability; e.g.,
290 using ``pprint.pprint(a_dict)`` in a doctest is now reliable.
292 - Patch #1497027: try HTTP digest auth before basic auth in urllib2
293 (thanks for J. J. Lee).
295 - Patch #1496206: improve urllib2 handling of passwords with respect to
296 default HTTP and HTTPS ports.
298 - Patch #1080727: add "encoding" parameter to doctest.DocFileSuite.
300 - Patch #1281707: speed up gzip.readline.
302 - Patch #1180296: Two new functions were added to the locale module:
303 format_string() to get the effect of "format % items" but locale-aware,
304 and currency() to format a monetary number with currency sign.
306 - Patch #1486962: Several bugs in the turtle Tk demo module were fixed
307 and several features added, such as speed and geometry control.
309 - Patch #1488881: add support for external file objects in bz2 compressed
312 - Patch #721464: pdb.Pdb instances can now be given explicit stdin and
313 stdout arguments, making it possible to redirect input and output
314 for remote debugging.
316 - Patch #1484695: Update the tarfile module to version 0.8. This fixes
317 a couple of issues, notably handling of long file names using the
318 GNU LONGNAME extension.
320 - Patch #1478292. ``doctest.register_optionflag(name)`` shouldn't create a
321 new flag when ``name`` is already the name of an option flag.
323 - Bug #1385040: don't allow "def foo(a=1, b): pass" in the compiler
326 - Patch #1472854: make the rlcompleter.Completer class usable on non-
329 - Patch #1470846: fix urllib2 ProxyBasicAuthHandler.
331 - Bug #1472827: correctly escape newlines and tabs in attribute values in
332 the saxutils.XMLGenerator class.
338 - Bug #1502728: Correctly link against librt library on HP-UX.
340 - OpenBSD 3.9 is supported now.
342 - Patch #1492356: Port to Windows CE.
344 - Bug/Patch #1481770: Use .so extension for shared libraries on HP-UX for ia64.
346 - Patch #1471883: Add --enable-universalsdk.
362 What's New in Python 2.5 alpha 2?
363 =================================
365 *Release date: 27-APR-2006*
370 - Bug #1465834: 'bdist_wininst preinstall script support' was fixed
371 by converting these apis from macros into exported functions again:
373 PyParser_SimpleParseFile PyParser_SimpleParseString PyRun_AnyFile
374 PyRun_AnyFileEx PyRun_AnyFileFlags PyRun_File PyRun_FileEx
375 PyRun_FileFlags PyRun_InteractiveLoop PyRun_InteractiveOne
376 PyRun_SimpleFile PyRun_SimpleFileEx PyRun_SimpleString
377 PyRun_String Py_CompileString
379 - Under COUNT_ALLOCS, types are not necessarily immortal anymore.
381 - All uses of PyStructSequence_InitType have been changed to initialize
382 the type objects only once, even if the interpreter is initialized
385 - Bug #1454485, array.array('u') could crash the interpreter. This was
386 due to PyArgs_ParseTuple(args, 'u#', ...) trying to convert buffers (strings)
387 to unicode when it didn't make sense. 'u#' now requires a unicode string.
389 - Py_UNICODE is unsigned. It was always documented as unsigned, but
390 due to a bug had a signed value in previous versions.
392 - Patch #837242: ``id()`` of any Python object always gives a positive
393 number now, which might be a long integer. ``PyLong_FromVoidPtr`` and
394 ``PyLong_AsVoidPtr`` have been changed accordingly. Note that it has
395 never been correct to implement a ``__hash()__`` method that returns the
396 ``id()`` of an object:
399 return id(self) # WRONG
401 because a hash result must be a (short) Python int but it was always
402 possible for ``id()`` to return a Python long. However, because ``id()``
403 could return negative values before, on a 32-bit box an ``id()`` result
404 was always usable as a hash value before this patch. That's no longer
407 - Python on OS X 10.3 and above now uses dlopen() (via dynload_shlib.c)
408 to load extension modules and now provides the dl module. As a result,
409 sys.setdlopenflags() now works correctly on these systems. (SF patch
412 - Patch #1463867: enhanced garbage collection to allow cleanup of cycles
413 involving generators that have paused outside of any ``try`` or ``with``
414 blocks. (In 2.5a1, a paused generator that was part of a reference
415 cycle could not be garbage collected, regardless of whether it was
416 paused in a ``try`` or ``with`` block.)
421 - Patch #1191065: Fix preprocessor problems on systems where recvfrom
424 - Bug #1467952: os.listdir() now correctly raises an error if readdir()
425 fails with an error condition.
427 - Fixed bsddb.db.DBError derived exceptions so they can be unpickled.
429 - Bug #1117761: bsddb.*open() no longer raises an exception when using
430 the cachesize parameter.
432 - Bug #1149413: bsddb.*open() no longer raises an exception when using
433 a temporary db (file=None) with the 'n' flag to truncate on open.
435 - Bug #1332852: bsddb module minimum BerkeleyDB version raised to 3.3
436 as older versions cause excessive test failures.
438 - Patch #1062014: AF_UNIX sockets under Linux have a special
439 abstract namespace that is now fully supported.
444 - Patch #1475231: ``doctest`` has a new ``SKIP`` option, which causes
445 a doctest to be skipped (the code is not run, and the expected output
446 or exception is ignored).
448 - Fixed contextlib.nested to cope with exceptions being raised and
449 caught inside exit handlers.
451 - Updated optparse module to Optik 1.5.1 (allow numeric constants in
452 hex, octal, or binary; add ``append_const`` action; keep going if
453 gettext cannot be imported; added ``OptionParser.destroy()`` method;
454 added ``epilog`` for better help generation).
456 - Bug #1473760: ``tempfile.TemporaryFile()`` could hang on Windows, when
457 called from a thread spawned as a side effect of importing a module.
459 - The pydoc module now supports documenting packages contained in
462 - The pkgutil module now has several new utility functions, such
463 as ``walk_packages()`` to support working with packages that are either
464 in the filesystem or zip files.
466 - The mailbox module can now modify and delete messages from
467 mailboxes, in addition to simply reading them. Thanks to Gregory
468 K. Johnson for writing the code, and to the 2005 Google Summer of
469 Code for funding his work.
471 - The ``__del__`` method of class ``local`` in module ``_threading_local``
472 returned before accomplishing any of its intended cleanup.
474 - Patch #790710: Add breakpoint command lists in pdb.
476 - Patch #1063914: Add Tkinter.Misc.clipboard_get().
478 - Patch #1191700: Adjust column alignment in bdb breakpoint lists.
480 - SimpleXMLRPCServer relied on the fcntl module, which is unavailable on
481 Windows. Bug #1469163.
483 - The warnings, linecache, inspect, traceback, site, and doctest modules
484 were updated to work correctly with modules imported from zipfiles or
485 via other PEP 302 __loader__ objects.
487 - Patch #1467770: Reduce usage of subprocess._active to processes which
488 the application hasn't waited on.
490 - Patch #1462222: Fix Tix.Grid.
492 - Fix exception when doing glob.glob('anything*/')
494 - The pstats.Stats class accepts an optional stream keyword argument to
495 direct output to an alternate file-like object.
500 - The Makefile now has a reindent target, which runs reindent.py on
503 - Patch #1470875: Building Python with MS Free Compiler
505 - Patch #1161914: Add a python-config script.
507 - Patch #1324762:Remove ccpython.cc; replace --with-cxx with
508 --with-cxx-main. Link with C++ compiler only if --with-cxx-main was
509 specified. (Can be overridden by explicitly setting LINKCC.) Decouple
510 CXX from --with-cxx-main, see description in README.
512 - Patch #1429775: Link extension modules with the shared libpython.
514 - Fixed a libffi build problem on MIPS systems.
516 - ``PyString_FromFormat``, ``PyErr_Format``, and ``PyString_FromFormatV``
517 now accept formats "%u" for unsigned ints, "%lu" for unsigned longs,
518 and "%zu" for unsigned integers of type ``size_t``.
523 - test_contextlib now checks contextlib.nested can cope with exceptions
524 being raised and caught inside exit handlers.
526 - test_cmd_line now checks operation of the -m and -c command switches
528 - The test_contextlib test in 2.5a1 wasn't actually run unless you ran
529 it separately and by hand. It also wasn't cleaning up its changes to
530 the current Decimal context.
532 - regrtest.py now has a -M option to run tests that test the new limits of
533 containers, on 64-bit architectures. Running these tests is only sensible
534 on 64-bit machines with more than two gigabytes of memory. The argument
535 passed is the maximum amount of memory for the tests to use.
540 - Added the Python benchmark suite pybench to the Tools/ directory;
541 contributed by Marc-Andre Lemburg.
546 - Patch #1473132: Improve docs for ``tp_clear`` and ``tp_traverse``.
548 - PEP 343: Added Context Types section to the library reference
549 and attempted to bring other PEP 343 related documentation into
550 line with the implementation and/or python-dev discussions.
552 - Bug #1337990: clarified that ``doctest`` does not support examples
553 requiring both expected output and an exception.
556 What's New in Python 2.5 alpha 1?
557 =================================
559 *Release date: 05-APR-2006*
564 - PEP 338: -m command line switch now delegates to runpy.run_module
565 allowing it to support modules in packages and zipfiles
567 - On Windows, .DLL is not an accepted file name extension for
568 extension modules anymore; extensions are only found if they
571 - Bug #1421664: sys.stderr.encoding is now set to the same value as
574 - __import__ accepts keyword arguments.
576 - Patch #1460496: round() now accepts keyword arguments.
578 - Fixed bug #1459029 - unicode reprs were double-escaped.
580 - Patch #1396919: The system scope threads are reenabled on FreeBSD
581 5.4 and later versions.
583 - Bug #1115379: Compiling a Unicode string with an encoding declaration
584 now gives a SyntaxError.
586 - Previously, Python code had no easy way to access the contents of a
587 cell object. Now, a ``cell_contents`` attribute has been added
588 (closes patch #1170323).
590 - Patch #1123430: Python's small-object allocator now returns an arena to
591 the system ``free()`` when all memory within an arena becomes unused
592 again. Prior to Python 2.5, arenas (256KB chunks of memory) were never
593 freed. Some applications will see a drop in virtual memory size now,
594 especially long-running applications that, from time to time, temporarily
595 use a large number of small objects. Note that when Python returns an
596 arena to the platform C's ``free()``, there's no guarantee that the
597 platform C library will in turn return that memory to the operating system.
598 The effect of the patch is to stop making that impossible, and in tests it
599 appears to be effective at least on Microsoft C and gcc-based systems.
600 Thanks to Evan Jones for hard work and patience.
602 - Patch #1434038: property() now uses the getter's docstring if there is
603 no "doc" argument given. This makes it possible to legitimately use
604 property() as a decorator to produce a read-only property.
606 - PEP 357, patch 1436368: add an __index__ method to int/long and a matching
607 nb_index slot to the PyNumberMethods struct. The slot is consulted instead
608 of requiring an int or long in slicing and a few other contexts, enabling
609 other objects (e.g. Numeric Python's integers) to be used as slice indices.
611 - Fixed various bugs reported by Coverity's Prevent tool.
613 - PEP 352, patch #1104669: Make exceptions new-style objects. Introduced the
614 new exception base class, BaseException, which has a new message attribute.
615 KeyboardInterrupt and SystemExit to directly inherit from BaseException now.
616 Raising a string exception now raises a DeprecationWarning.
618 - Patch #1438387, PEP 328: relative and absolute imports. Imports can now be
619 explicitly relative, using 'from .module import name' to mean 'from the same
620 package as this module is in. Imports without dots still default to the
621 old relative-then-absolute, unless 'from __future__ import
622 absolute_import' is used.
624 - Properly check if 'warnings' raises an exception (usually when a filter set
625 to "error" is triggered) when raising a warning for raising string
628 - CO_GENERATOR_ALLOWED is no longer defined. This behavior is the default.
629 The name was removed from Include/code.h.
631 - PEP 308: conditional expressions were added: (x if cond else y).
634 - The copy module now "copies" function objects (as atomic objects).
635 - dict.__getitem__ now looks for a __missing__ hook before raising
638 - PEP 343: with statement implemented. Needs ``from __future__ import
639 with_statement``. Use of 'with' as a variable will generate a warning.
640 Use of 'as' as a variable will also generate a warning (unless it's
641 part of an import statement).
642 The following objects have __context__ methods:
643 - The built-in file type.
644 - The thread.LockType type.
645 - The following types defined by the threading module:
646 Lock, RLock, Condition, Semaphore, BoundedSemaphore.
647 - The decimal.Context class.
649 - Fix the encodings package codec search function to only search
650 inside its own package. Fixes problem reported in patch #1433198.
652 Note: Codec packages should implement and register their own
653 codec search function. PEP 100 has the details.
655 - PEP 353: Using ``Py_ssize_t`` as the index type.
657 - ``PYMALLOC_DEBUG`` builds now add ``4*sizeof(size_t)`` bytes of debugging
658 info to each allocated block, since the ``Py_ssize_t`` changes (PEP 353)
659 now allow Python to make use of memory blocks exceeding 2**32 bytes for
660 some purposes on 64-bit boxes. A ``PYMALLOC_DEBUG`` build was limited
661 to 4-byte allocations before.
663 - Patch #1400181, fix unicode string formatting to not use the locale.
664 This is how string objects work. u'%f' could use , instead of .
665 for the decimal point. Now both strings and unicode always use periods.
667 - Bug #1244610, #1392915, fix build problem on OpenBSD 3.7 and 3.8.
668 configure would break checking curses.h.
670 - Bug #959576: The pwd module is now builtin. This allows Python to be
671 built on UNIX platforms without $HOME set.
673 - Bug #1072182, fix some potential problems if characters are signed.
675 - Bug #889500, fix line number on SyntaxWarning for global declarations.
677 - Bug #1378022, UTF-8 files with a leading BOM crashed the interpreter.
679 - Support for converting hex strings to floats no longer works.
680 This was not portable. float('0x3') now raises a ValueError.
682 - Patch #1382163: Expose Subversion revision number to Python. New C API
683 function Py_GetBuildNumber(). New attribute sys.subversion. Build number
684 is now displayed in interactive prompt banner.
686 - Implementation of PEP 341 - Unification of try/except and try/finally.
687 "except" clauses can now be written together with a "finally" clause in
688 one try statement instead of two nested ones. Patch #1355913.
690 - Bug #1379994: Builtin unicode_escape and raw_unicode_escape codec
691 now encodes backslash correctly.
693 - Patch #1350409: Work around signal handling bug in Visual Studio 2005.
695 - Bug #1281408: Py_BuildValue now works correctly even with unsigned longs
698 - SF Bug #1350188, "setdlopenflags" leads to crash upon "import"
699 It was possible for dlerror() to return a NULL pointer, so
700 it will now use a default error message in this case.
702 - Replaced most Unicode charmap codecs with new ones using the
703 new Unicode translate string feature in the builtin charmap
704 codec; the codecs were created from the mapping tables available
705 at ftp.unicode.org and contain a few updates (e.g. the Mac OS
706 encodings now include a mapping for the Apple logo)
708 - Added a few more codecs for Mac OS encodings
710 - Sped up some Unicode operations.
712 - A new AST parser implementation was completed. The abstract
713 syntax tree is available for read-only (non-compile) access
714 to Python code; an _ast module was added.
716 - SF bug #1167751: fix incorrect code being produced for generator expressions.
717 The following code now raises a SyntaxError: foo(a = i for i in range(10))
719 - SF Bug #976608: fix SystemError when mtime of an imported file is -1.
721 - SF Bug #887946: fix segfault when redirecting stdin from a directory.
722 Provide a warning when a directory is passed on the command line.
724 - Fix segfault with invalid coding.
726 - SF bug #772896: unknown encoding results in MemoryError.
728 - All iterators now have a Boolean value of True. Formerly, some iterators
729 supported a __len__() method which evaluated to False when the iterator
732 - On 64-bit platforms, when __len__() returns a value that cannot be
733 represented as a C int, raise OverflowError.
735 - test__locale is skipped on OS X < 10.4 (only partial locale support is
738 - SF bug #893549: parsing keyword arguments was broken with a few format
741 - Changes donated by Elemental Security to make it work on AIX 5.3
742 with IBM's 64-bit compiler (SF patch #1284289). This also closes SF
743 bug #105470: test_pwd fails on 64bit system (Opteron).
745 - Changes donated by Elemental Security to make it work on HP-UX 11 on
746 Itanium2 with HP's 64-bit compiler (SF patch #1225212).
748 - Disallow keyword arguments for type constructors that don't use them
749 (fixes bug #1119418).
751 - Forward UnicodeDecodeError into SyntaxError for source encoding errors.
753 - SF bug #900092: When tracing (e.g. for hotshot), restore 'return' events for
754 exceptions that cause a function to exit.
756 - The implementation of set() and frozenset() was revised to use its
757 own internal data structure. Memory consumption is reduced by 1/3
758 and there are modest speed-ups as well. The API is unchanged.
760 - SF bug #1238681: freed pointer is used in longobject.c:long_pow().
762 - SF bug #1229429: PyObject_CallMethod failed to decrement some
763 reference counts in some error exit cases.
765 - SF bug #1185883: Python's small-object memory allocator took over
766 a block managed by the platform C library whenever a realloc specified
767 a small new size. However, there's no portable way to know then how
768 much of the address space following the pointer is valid, so there's no
769 portable way to copy data from the C-managed block into Python's
770 small-object space without risking a memory fault. Python's small-object
771 realloc now leaves such blocks under the control of the platform C
774 - SF bug #1232517: An overflow error was not detected properly when
775 attempting to convert a large float to an int in os.utime().
777 - SF bug #1224347: hex longs now print with lowercase letters just
778 like their int counterparts.
780 - SF bug #1163563: the original fix for bug #1010677 ("thread Module
781 Breaks PyGILState_Ensure()") broke badly in the case of multiple
782 interpreter states; back out that fix and do a better job (see
783 http://mail.python.org/pipermail/python-dev/2005-June/054258.html
784 for a longer write-up of the problem).
786 - SF patch #1180995: marshal now uses a binary format by default when
789 - SF patch #1181301: on platforms that appear to use IEEE 754 floats,
790 the routines that promise to produce IEEE 754 binary representations
791 of floats now simply copy bytes around.
793 - bug #967182: disallow opening files with 'wU' or 'aU' as specified by PEP
796 - patch #1109424: int, long, float, complex, and unicode now check for the
797 proper magic slot for type conversions when subclassed. Previously the
798 magic slot was ignored during conversion. Semantics now match the way
799 subclasses of str always behaved. int/long/float, conversion of an instance
800 to the base class has been moved to the proper nb_* magic slot and out of
802 Thanks Walter D�rwald.
804 - Descriptors defined in C with a PyGetSetDef structure, where the setter is
805 NULL, now raise an AttributeError when attempting to set or delete the
806 attribute. Previously a TypeError was raised, but this was inconsistent
807 with the equivalent pure-Python implementation.
809 - It is now safe to call PyGILState_Release() before
810 PyEval_InitThreads() (note that if there is reason to believe there
811 are multiple threads around you still must call PyEval_InitThreads()
812 before using the Python API; this fix is for extension modules that
813 have no way of knowing if Python is multi-threaded yet).
815 - Typing Ctrl-C whilst raw_input() was waiting in a build with threads
816 disabled caused a crash.
818 - Bug #1165306: instancemethod_new allowed the creation of a method
819 with im_class == im_self == NULL, which caused a crash when called.
821 - Move exception finalisation later in the shutdown process - this
822 fixes the crash seen in bug #1165761
824 - Added two new builtins, any() and all().
826 - Defining a class with empty parentheses is now allowed
827 (e.g., ``class C(): pass`` is no longer a syntax error).
828 Patch #1176012 added support to the 'parser' module and 'compiler' package
829 (thanks to logistix for that added support).
831 - Patch #1115086: Support PY_LONGLONG in structmember.
833 - Bug #1155938: new style classes did not check that __init__() was
836 - Patch #802188: Report characters after line continuation character
837 ('\') with a specific error message.
839 - Bug #723201: Raise a TypeError for passing bad objects to 'L' format.
841 - Bug #1124295: the __name__ attribute of file objects was
842 inadvertently made inaccessible in restricted mode.
844 - Bug #1074011: closing sys.std{out,err} now causes a flush() and
847 - min() and max() now support key= arguments with the same meaning as in
850 - The peephole optimizer now performs simple constant folding in expressions:
853 - set and frozenset objects can now be marshalled. SF #1098985.
855 - Bug #1077106: Poor argument checking could cause memory corruption
856 in calls to os.read().
858 - The parser did not complain about future statements in illegal
859 positions. It once again reports a syntax error if a future
860 statement occurs after anything other than a doc string.
862 - Change the %s format specifier for str objects so that it returns a
863 unicode instance if the argument is not an instance of basestring and
864 calling __str__ on the argument returns a unicode instance.
866 - Patch #1413181: changed ``PyThreadState_Delete()`` to forget about the
867 current thread state when the auto-GIL-state machinery knows about
868 it (since the thread state is being deleted, continuing to remember it
869 can't help, but can hurt if another thread happens to get created with
875 - Patch #1380952: fix SSL objects timing out on consecutive read()s
877 - Patch #1309579: wait3 and wait4 were added to the posix module.
879 - Patch #1231053: The audioop module now supports encoding/decoding of alaw.
880 In addition, the existing ulaw code was updated.
882 - RFE #567972: Socket objects' family, type and proto properties are
883 now exposed via new attributes.
885 - Everything under lib-old was removed. This includes the following modules:
886 Para, addpack, cmp, cmpcache, codehack, dircmp, dump, find, fmt, grep,
887 lockfile, newdir, ni, packmail, poly, rand, statcache, tb, tzparse,
888 util, whatsound, whrandom, zmod
890 - The following modules were removed: regsub, reconvert, regex, regex_syntax.
892 - re and sre were swapped, so help(re) provides full help. importing sre
893 is deprecated. The undocumented re.engine variable no longer exists.
895 - Bug #1448490: Fixed a bug that ISO-2022 codecs could not handle
896 SS2 (single-shift 2) escape sequences correctly.
898 - The unicodedata module was updated to the 4.1 version of the Unicode
899 database. The 3.2 version is still available as unicodedata.db_3_2_0
900 for applications that require this specific version (such as IDNA).
902 - The timing module is no longer built by default. It was deprecated
903 in PEP 4 in Python 2.0 or earlier.
905 - Patch 1433928: Added a new type, defaultdict, to the collections module.
906 This uses the new __missing__ hook behavior added to dict (see above).
908 - Bug #854823: socketmodule now builds on Sun platforms even when
909 INET_ADDRSTRLEN is not defined.
911 - Patch #1393157: os.startfile() now has an optional argument to specify
912 a "command verb" to invoke on the file.
914 - Bug #876637, prevent stack corruption when socket descriptor
915 is larger than FD_SETSIZE.
917 - Patch #1407135, bug #1424041: harmonize mmap behavior of anonymous memory.
918 mmap.mmap(-1, size) now returns anonymous memory in both Unix and Windows.
919 mmap.mmap(0, size) should not be used on Windows for anonymous memory.
921 - Patch #1422385: The nis module now supports access to domains other
922 than the system default domain.
924 - Use Win32 API to implement os.stat/fstat. As a result, subsecond timestamps
925 are reported, the limit on path name lengths is removed, and stat reports
926 WindowsError now (instead of OSError).
928 - Add bsddb.db.DBEnv.set_tx_timestamp allowing time based database recovery.
930 - Bug #1413192, fix seg fault in bsddb if a transaction was deleted
933 - Patch #1103116: Basic AF_NETLINK support.
935 - Bug #1402308, (possible) segfault when using mmap.mmap(-1, ...)
937 - Bug #1400822, _curses over{lay,write} doesn't work when passing 6 ints.
938 Also fix ungetmouse() which did not accept arguments properly.
939 The code now conforms to the documented signature.
941 - Bug #1400115, Fix segfault when calling curses.panel.userptr()
942 without prior setting of the userptr.
944 - Fix 64-bit problems in bsddb.
946 - Patch #1365916: fix some unsafe 64-bit mmap methods.
948 - Bug #1290333: Added a workaround for cjkcodecs' _codecs_cn build
951 - Bug #869197: os.setgroups rejects long integer arguments
953 - Bug #1346533, select.poll() doesn't raise an error if timeout > sys.maxint
955 - Bug #1344508, Fix UNIX mmap leaking file descriptors
957 - Patch #1338314, Bug #1336623: fix tarfile so it can extract
958 REGTYPE directories from tarfiles written by old programs.
960 - Patch #1407992, fixes broken bsddb module db associate when using
961 BerkeleyDB 3.3, 4.0 or 4.1.
963 - Get bsddb module to build with BerkeleyDB version 4.4
965 - Get bsddb module to build with BerkeleyDB version 3.2
967 - Patch #1309009, Fix segfault in pyexpat when the XML document is in latin_1,
968 but Python incorrectly assumes it is in UTF-8 format
970 - Fix parse errors in the readline module when compiling without threads.
972 - Patch #1288833: Removed thread lock from socket.getaddrinfo on
973 FreeBSD 5.3 and later versions which got thread-safe getaddrinfo(3).
975 - Patches #1298449 and #1298499: Add some missing checks for error
976 returns in cStringIO.c.
978 - Patch #1297028: fix segfault if call type on MultibyteCodec,
979 MultibyteStreamReader, or MultibyteStreamWriter
981 - Fix memory leak in posix.access().
983 - Patch #1213831: Fix typo in unicodedata._getcode.
985 - Bug #1007046: os.startfile() did not accept unicode strings encoded in
986 the file system encoding.
988 - Patch #756021: Special-case socket.inet_aton('255.255.255.255') for
989 platforms that don't have inet_aton().
991 - Bug #1215928: Fix bz2.BZ2File.seek() for 64-bit file offsets.
993 - Bug #1191043: Fix bz2.BZ2File.(x)readlines for files containing one
994 line without newlines.
996 - Bug #728515: mmap.resize() now resizes the file on Unix as it did
999 - Patch #1180695: Add nanosecond stat resolution, and st_gen,
1000 st_birthtime for FreeBSD.
1002 - Patch #1231069: The fcntl.ioctl function now uses the 'I' code for
1003 the request code argument, which results in more C-like behaviour
1004 for large or negative values.
1006 - Bug #1234979: For the argument of thread.Lock.acquire, the Windows
1007 implementation treated all integer values except 1 as false.
1009 - Bug #1194181: bz2.BZ2File didn't handle mode 'U' correctly.
1011 - Patch #1212117: os.stat().st_flags is now accessible as a attribute
1012 if available on the platform.
1014 - Patch #1103951: Expose O_SHLOCK and O_EXLOCK in the posix module if
1015 available on the platform.
1017 - Bug #1166660: The readline module could segfault if hook functions
1018 were set in a different thread than that which called readline.
1020 - collections.deque objects now support a remove() method.
1022 - operator.itemgetter() and operator.attrgetter() now support retrieving
1023 multiple fields. This provides direct support for sorting on multiple
1024 keys (primary, secondary, etc).
1026 - os.access now supports Unicode path names on non-Win32 systems.
1028 - Patches #925152, #1118602: Avoid reading after the end of the buffer
1029 in pyexpat.GetInputContext.
1031 - Patches #749830, #1144555: allow UNIX mmap size to default to current
1034 - Added functional.partial(). See PEP309.
1036 - Patch #1093585: raise a ValueError for negative history items in readline.
1037 {remove_history,replace_history}
1039 - The spwd module has been added, allowing access to the shadow password
1042 - stat_float_times is now True.
1044 - array.array objects are now picklable.
1046 - the cPickle module no longer accepts the deprecated None option in the
1047 args tuple returned by __reduce__().
1049 - itertools.islice() now accepts None for the start and step arguments.
1050 This allows islice() to work more readily with slices:
1051 islice(s.start, s.stop, s.step)
1053 - datetime.datetime() now has a strptime class method which can be used to
1054 create datetime object using a string and format.
1056 - Patch #1117961: Replace the MD5 implementation from RSA Data Security Inc
1057 with the implementation from http://sourceforge.net/projects/libmd5-rfc/.
1062 - PEP 338: new module runpy defines a run_module function to support
1063 executing modules which provide access to source code or a code object
1064 via the PEP 302 import mechanisms.
1066 - The email module's parsedate_tz function now sets the daylight savings
1067 flag to -1 (unknown) since it can't tell from the date whether it should
1070 - Patch #624325: urlparse.urlparse() and urlparse.urlsplit() results
1071 now sport attributes that provide access to the parts of the result.
1073 - Patch #1462498: sgmllib now handles entity and character references
1074 in attribute values.
1076 - Added the sqlite3 package. This is based on pysqlite2.1.3, and provides
1077 a DB-API interface in the standard library. You'll need sqlite 3.0.8 or
1078 later to build this - if you have an earlier version, the C extension
1079 module will not be built.
1081 - Bug #1460340: ``random.sample(dict)`` failed in various ways. Dicts
1082 aren't officially supported here, and trying to use them will probably
1083 raise an exception some day. But dicts have been allowed, and "mostly
1084 worked", so support for them won't go away without warning.
1086 - Bug #1445068: getpass.getpass() can now be given an explicit stream
1087 argument to specify where to write the prompt.
1089 - Patch #1462313, bug #1443328: the pickle modules now can handle classes
1090 that have __private names in their __slots__.
1092 - Bug #1250170: mimetools now handles socket.gethostname() failures gracefully.
1094 - patch #1457316: "setup.py upload" now supports --identity to select the
1095 key to be used for signing the uploaded code.
1097 - Queue.Queue objects now support .task_done() and .join() methods
1098 to make it easier to monitor when daemon threads have completed
1099 processing all enqueued tasks. Patch #1455676.
1101 - popen2.Popen objects now preserve the command in a .cmd attribute.
1103 - Added the ctypes ffi package.
1105 - email 4.0 package now integrated. This is largely the same as the email 3.0
1106 package that was included in Python 2.3, except that PEP 8 module names are
1107 now used (e.g. mail.message instead of email.Message). The MIME classes
1108 have been moved to a subpackage (e.g. email.mime.text instead of
1109 email.MIMEText). The old names are still supported for now. Several
1110 deprecated Message methods have been removed and lots of bugs have been
1111 fixed. More details can be found in the email package documentation.
1113 - Patches #1436130/#1443155: codecs.lookup() now returns a CodecInfo object
1114 (a subclass of tuple) that provides incremental decoders and encoders
1115 (a way to use stateful codecs without the stream API). Python functions
1116 codecs.getincrementaldecoder() and codecs.getincrementalencoder() as well
1117 as C functions PyCodec_IncrementalEncoder() and PyCodec_IncrementalDecoder()
1120 - Patch #1359365: Calling next() on a closed StringIO.String object raises
1121 a ValueError instead of a StopIteration now (like file and cString.String do).
1122 cStringIO.StringIO.isatty() will raise a ValueError now if close() has been
1123 called before (like file and StringIO.StringIO do).
1125 - A regrtest option -w was added to re-run failed tests in verbose mode.
1127 - Patch #1446372: quit and exit can now be called from the interactive
1128 interpreter to exit.
1130 - The function get_count() has been added to the gc module, and gc.collect()
1131 grew an optional 'generation' argument.
1133 - A library msilib to generate Windows Installer files, and a distutils
1134 command bdist_msi have been added.
1136 - PEP 343: new module contextlib.py defines decorator @contextmanager
1137 and helpful context managers nested() and closing().
1139 - The compiler package now supports future imports after the module docstring.
1141 - Bug #1413790: zipfile now sanitizes absolute archive names that are
1142 not allowed by the specs.
1144 - Patch #1215184: FileInput now can be given an opening hook which can
1145 be used to control how files are opened.
1147 - Patch #1212287: fileinput.input() now has a mode parameter for
1148 specifying the file mode input files should be opened with.
1150 - Patch #1215184: fileinput now has a fileno() function for getting the
1151 current file number.
1153 - Patch #1349274: gettext.install() now optionally installs additional
1154 translation functions other than _() in the builtin namespace.
1156 - Patch #1337756: fileinput now accepts Unicode filenames.
1158 - Patch #1373643: The chunk module can now read chunks larger than
1161 - Patch #1417555: SimpleHTTPServer now returns Last-Modified headers.
1163 - Bug #1430298: It is now possible to send a mail with an empty
1164 return address using smtplib.
1166 - Bug #1432260: The names of lambda functions are now properly displayed
1169 - Patch #1412872: zipfile now sets the creator system to 3 (Unix)
1170 unless the system is Win32.
1172 - Patch #1349118: urllib now supports user:pass@ style proxy
1173 specifications, raises IOErrors when proxies for unsupported protocols
1174 are defined, and uses the https proxy on https redirections.
1176 - Bug #902075: urllib2 now supports 'host:port' style proxy specifications.
1178 - Bug #1407902: Add support for sftp:// URIs to urlparse.
1180 - Bug #1371247: Update Windows locale identifiers in locale.py.
1182 - Bug #1394565: SimpleHTTPServer now doesn't choke on query parameters
1185 - Bug #1403410: The warnings module now doesn't get confused
1186 when it can't find out the module name it generates a warning for.
1188 - Patch #1177307: Added a new codec utf_8_sig for UTF-8 with a BOM signature.
1190 - Patch #1157027: cookielib mishandles RFC 2109 cookies in Netscape mode
1192 - Patch #1117398: cookielib.LWPCookieJar and .MozillaCookieJar now raise
1193 LoadError as documented, instead of IOError. For compatibility,
1194 LoadError subclasses IOError.
1196 - Added the hashlib module. It provides secure hash functions for MD5 and
1197 SHA1, 224, 256, 384, and 512. Note that recent developments make the
1198 historic MD5 and SHA1 unsuitable for cryptographic-strength applications.
1199 In <http://mail.python.org/pipermail/python-dev/2005-December/058850.html>
1200 Ronald L. Rivest offered this advice for Python:
1202 "The consensus of researchers in this area (at least as
1203 expressed at the NIST Hash Function Workshop 10/31/05),
1204 is that SHA-256 is a good choice for the time being, but
1205 that research should continue, and other alternatives may
1206 arise from this research. The larger SHA's also seem OK."
1208 - Added a subset of Fredrik Lundh's ElementTree package. Available
1209 modules are xml.etree.ElementTree, xml.etree.ElementPath, and
1210 xml.etree.ElementInclude, from ElementTree 1.2.6.
1212 - Patch #1162825: Support non-ASCII characters in IDLE window titles.
1214 - Bug #1365984: urllib now opens "data:" URLs again.
1216 - Patch #1314396: prevent deadlock for threading.Thread.join() when an exception
1217 is raised within the method itself on a previous call (e.g., passing in an
1220 - Bug #1340337: change time.strptime() to always return ValueError when there
1221 is an error in the format string.
1223 - Patch #754022: Greatly enhanced webbrowser.py (by Oleg Broytmann).
1225 - Bug #729103: pydoc.py: Fix docother() method to accept additional
1228 - Patch #1300515: xdrlib.py: Fix pack_fstring() to really use null bytes
1231 - Bug #1296004: httplib.py: Limit maximal amount of data read from the
1232 socket to avoid a MemoryError on Windows.
1234 - Patch #1166948: locale.py: Prefer LC_ALL, LC_CTYPE and LANG over LANGUAGE
1235 to get the correct encoding.
1237 - Patch #1166938: locale.py: Parse LANGUAGE as a colon separated list of
1240 - Patch #1268314: Cache lines in StreamReader.readlines for performance.
1242 - Bug #1290505: Fix clearing the regex cache for time.strptime().
1244 - Bug #1167128: Fix size of a symlink in a tarfile to be 0.
1246 - Patch #810023: Fix off-by-one bug in urllib.urlretrieve reporthook
1249 - Bug #1163178: Make IDNA return an empty string when the input is empty.
1251 - Patch #848017: Make Cookie more RFC-compliant. Use CRLF as default output
1252 separator and do not output trailing semicolon.
1254 - Patch #1062060: urllib.urlretrieve() now raises a new exception, named
1255 ContentTooShortException, when the actually downloaded size does not
1256 match the Content-Length header.
1258 - Bug #1121494: distutils.dir_utils.mkpath now accepts Unicode strings.
1260 - Bug #1178484: Return complete lines from codec stream readers
1261 even if there is an exception in later lines, resulting in
1262 correct line numbers for decoding errors in source code.
1264 - Bug #1192315: Disallow negative arguments to clear() in pdb.
1266 - Patch #827386: Support absolute source paths in msvccompiler.py.
1268 - Patch #1105730: Apply the new implementation of commonprefix in posixpath
1269 to ntpath, macpath, os2emxpath and riscospath.
1271 - Fix a problem in Tkinter introduced by SF patch #869468: delete bogus
1272 __hasattr__ and __delattr__ methods on class Tk that were breaking
1275 - Bug #1015140: disambiguated the term "article id" in nntplib docs and
1276 docstrings to either "article number" or "message id".
1278 - Bug #1238170: threading.Thread.__init__ no longer has "kwargs={}" as a
1279 parameter, but uses the usual "kwargs=None".
1281 - textwrap now processes text chunks at O(n) speed instead of O(n**2).
1282 Patch #1209527 (Contributed by Connelly).
1284 - urllib2 has now an attribute 'httpresponses' mapping from HTTP status code
1285 to W3C name (404 -> 'Not Found'). RFE #1216944.
1287 - Bug #1177468: Don't cache the /dev/urandom file descriptor for os.urandom,
1288 as this can cause problems with apps closing all file descriptors.
1290 - Bug #839151: Fix an attempt to access sys.argv in the warnings module;
1291 it can be missing in embedded interpreters
1293 - Bug #1155638: Fix a bug which affected HTTP 0.9 responses in httplib.
1295 - Bug #1100201: Cross-site scripting was possible on BaseHTTPServer via
1298 - Bug #1108948: Cookie.py produced invalid JavaScript code.
1300 - The tokenize module now detects and reports indentation errors.
1303 - The tokenize module has a new untokenize() function to support a full
1304 roundtrip from lexed tokens back to Python source code. In addition,
1305 the generate_tokens() function now accepts a callable argument that
1306 terminates by raising StopIteration.
1308 - Bug #1196315: fix weakref.WeakValueDictionary constructor.
1310 - Bug #1213894: os.path.realpath didn't resolve symlinks that were the first
1311 component of the path.
1313 - Patch #1120353: The xmlrpclib module provides better, more transparent,
1314 support for datetime.{datetime,date,time} objects. With use_datetime set
1315 to True, applications shouldn't have to fiddle with the DateTime wrapper
1318 - distutils.commands.upload was added to support uploading distribution
1321 - distutils.commands.register now encodes the data as UTF-8 before posting
1324 - decimal operator and comparison methods now return NotImplemented
1325 instead of raising a TypeError when interacting with other types. This
1326 allows other classes to implement __radd__ style methods and have them
1329 - Bug #1163325: Decimal infinities failed to hash. Attempting to
1330 hash a NaN raised an InvalidOperation instead of a TypeError.
1332 - Patch #918101: Add tarfile open mode r|* for auto-detection of the
1333 stream compression; add, for symmetry reasons, r:* as a synonym of r.
1335 - Patch #1043890: Add extractall method to tarfile.
1337 - Patch #1075887: Don't require MSVC in distutils if there is nothing
1340 - Patch #1103407: Properly deal with tarfile iterators when untarring
1341 symbolic links on Windows.
1343 - Patch #645894: Use getrusage for computing the time consumption in
1344 profile.py if available.
1346 - Patch #1046831: Use get_python_version where appropriate in sysconfig.py.
1348 - Patch #1117454: Remove code to special-case cookies without values
1351 - Patch #1117339: Add cookielib special name tests.
1353 - Patch #1112812: Make bsddb/__init__.py more friendly for modulefinder.
1355 - Patch #1110248: SYNC_FLUSH the zlib buffer for GZipFile.flush.
1357 - Patch #1107973: Allow to iterate over the lines of a tarfile.ExFileObject.
1359 - Patch #1104111: Alter setup.py --help and --help-commands.
1361 - Patch #1121234: Properly cleanup _exit and tkerror commands.
1363 - Patch #1049151: xdrlib now unpacks booleans as True or False.
1365 - Fixed bug in a NameError bug in cookielib. Patch #1116583.
1367 - Applied a security fix to SimpleXMLRPCserver (PSF-2005-001). This
1368 disables recursive traversal through instance attributes, which can
1369 be exploited in various ways.
1371 - Bug #1222790: in SimpleXMLRPCServer, set the reuse-address and close-on-exec
1372 flags on the HTTP listening socket.
1374 - Bug #792570: SimpleXMLRPCServer had problems if the request grew too large.
1375 Fixed by reading the HTTP body in chunks instead of one big socket.read().
1377 - Patches #893642, #1039083: add allow_none, encoding arguments to constructors of
1378 SimpleXMLRPCServer and CGIXMLRPCRequestHandler.
1380 - Bug #1110478: Revert os.environ.update to do putenv again.
1382 - Bug #1103844: fix distutils.install.dump_dirs() with negated options.
1384 - os.{SEEK_SET, SEEK_CUR, SEEK_END} have been added for convenience.
1386 - Enhancements to the csv module:
1388 + Dialects are now validated by the underlying C code, better
1389 reflecting its capabilities, and improving its compliance with
1391 + Dialect parameter parsing has been re-implemented to improve error
1393 + quotechar=None and quoting=QUOTE_NONE now work the way PEP 305
1395 + the parser now removes the escapechar prefix from escaped characters.
1396 + when quoting=QUOTE_NONNUMERIC, the writer now tests for numeric
1397 types, rather than any object that can be represented as a numeric.
1398 + when quoting=QUOTE_NONNUMERIC, the reader now casts unquoted fields
1400 + reader now allows \r characters to be quoted (previously it only allowed
1402 + writer doublequote handling improved.
1403 + Dialect classes passed to the module are no longer instantiated by
1404 the module before being parsed (the former validation scheme required
1405 this, but the mechanism was unreliable).
1406 + The dialect registry now contains instances of the internal
1407 C-coded dialect type, rather than references to python objects.
1408 + the internal c-coded dialect type is now immutable.
1409 + register_dialect now accepts the same keyword dialect specifications
1410 as the reader and writer, allowing the user to register dialects
1411 without first creating a dialect class.
1412 + a configurable limit to the size of parsed fields has been added -
1413 previously, an unmatched quote character could result in the entire
1414 file being read into the field buffer before an error was reported.
1415 + A new module method csv.field_size_limit() has been added that sets
1416 the parser field size limit (returning the former limit). The initial
1418 + A line_num attribute has been added to the reader object, which tracks
1419 the number of lines read from the source iterator. This is not
1420 the same as the number of records returned, as records can span
1422 + reader and writer objects were not being registered with the cyclic-GC.
1423 This has been fixed.
1425 - _DummyThread objects in the threading module now delete self.__block that is
1426 inherited from _Thread since it uses up a lock allocated by 'thread'. The
1427 lock primitives tend to be limited in number and thus should not be wasted on
1428 a _DummyThread object. Fixes bug #1089632.
1430 - The imghdr module now detects Exif files.
1432 - StringIO.truncate() now correctly adjusts the size attribute.
1435 - locale.py now uses an updated locale alias table (built using
1436 Tools/i18n/makelocalealias.py, a tool to parse the X11 locale
1437 alias file); the encoding lookup was enhanced to use Python's
1438 encoding alias table.
1440 - moved deprecated modules to Lib/lib-old: whrandom, tzparse, statcache.
1442 - the pickle module no longer accepts the deprecated None option in the
1443 args tuple returned by __reduce__().
1445 - optparse now optionally imports gettext. This allows its use in setup.py.
1447 - the pickle module no longer uses the deprecated bin parameter.
1449 - the shelve module no longer uses the deprecated binary parameter.
1451 - the pstats module no longer uses the deprecated ignore() method.
1453 - the filecmp module no longer uses the deprecated use_statcache argument.
1455 - unittest.TestCase.run() and unittest.TestSuite.run() can now be successfully
1456 extended or overridden by subclasses. Formerly, the subclassed method would
1457 be ignored by the rest of the module. (Bug #1078905).
1459 - heapq.nsmallest() and heapq.nlargest() now support key= arguments with
1460 the same meaning as in list.sort().
1462 - Bug #1076985: ``codecs.StreamReader.readline()`` now calls ``read()`` only
1463 once when a size argument is given. This prevents a buffer overflow in the
1464 tokenizer with very long source lines.
1466 - Bug #1083110: ``zlib.decompress.flush()`` would segfault if called
1467 immediately after creating the object, without any intervening
1468 ``.decompress()`` calls.
1470 - The reconvert.quote function can now emit triple-quoted strings. The
1471 reconvert module now has some simple documentation.
1473 - ``UserString.MutableString`` now supports negative indices in
1474 ``__setitem__`` and ``__delitem__``
1476 - Bug #1149508: ``textwrap`` now handles hyphenated numbers (eg. "2004-03-05")
1479 - Partial fixes for SF bugs #1163244 and #1175396: If a chunk read by
1480 ``codecs.StreamReader.readline()`` has a trailing "\r", read one more
1481 character even if the user has passed a size parameter to get a proper
1482 line ending. Remove the special handling of a "\r\n" that has been split
1485 - Bug #1251300: On UCS-4 builds the "unicode-internal" codec will now complain
1486 about illegal code points. The codec now supports PEP 293 style error
1489 - Bug #1235646: ``codecs.StreamRecoder.next()`` now reencodes the data it reads
1490 from the input stream, so that the output is a byte string in the correct
1491 encoding instead of a unicode string.
1493 - Bug #1202493: Fixing SRE parser to handle '{}' as perl does, rather than
1494 considering it exactly like a '*'.
1496 - Bug #1245379: Add "unicode-1-1-utf-7" as an alias for "utf-7" to
1497 ``encodings.aliases``.
1499 - ` uu.encode()`` and ``uu.decode()`` now support unicode filenames.
1501 - Patch #1413711: Certain patterns of differences were making difflib
1502 touch the recursion limit.
1504 - Bug #947906: An object oriented interface has been added to the calendar
1505 module. It's possible to generate HTML calendar now and the module can be
1506 called as a script (e.g. via ``python -mcalendar``). Localized month and
1507 weekday names can be ouput (even if an exotic encoding is used) using
1508 special classes that use unicode.
1513 - Fix test_float, test_long, and test_struct failures on Tru64 with gcc
1514 by using -mieee gcc option.
1516 - Patch #1432345: Make python compile on DragonFly.
1518 - Build support for Win64-AMD64 was added.
1520 - Patch #1428494: Prefer linking against ncursesw over ncurses library.
1522 - Patch #881820: look for openpty and forkpty also in libbsd.
1524 - The sources of zlib are now part of the Python distribution (zlib 1.2.3).
1525 The zlib module is now builtin on Windows.
1527 - Use -xcode=pic32 for CCSHARED on Solaris with SunPro.
1529 - Bug #1189330: configure did not correctly determine the necessary
1530 value of LINKCC if python was built with GCC 4.0.
1532 - Upgrade Windows build to zlib 1.2.3 which eliminates a potential security
1533 vulnerability in zlib 1.2.1 and 1.2.2.
1535 - EXTRA_CFLAGS has been introduced as an environment variable to hold compiler
1536 flags that change binary compatibility. Changes were also made to
1537 distutils.sysconfig to also use the environment variable when used during
1538 compilation of the interpreter and of C extensions through distutils.
1540 - SF patch 1171735: Darwin 8's headers are anal about POSIX compliance,
1541 and linking has changed (prebinding is now deprecated, and libcc_dynamic
1542 no longer exists). This configure patch makes things right.
1544 - Bug #1158607: Build with --disable-unicode again.
1546 - spwdmodule.c is built only if either HAVE_GETSPNAM or HAVE_HAVE_GETSPENT is
1547 defined. Discovered as a result of not being able to build on OS X.
1549 - setup.py now uses the directories specified in LDFLAGS using the -L option
1550 and in CPPFLAGS using the -I option for adding library and include
1551 directories, respectively, for compiling extension modules against. This has
1552 led to the core being compiled using the values in CPPFLAGS. It also removes
1553 the need for the special-casing of both DarwinPorts and Fink for darwin since
1554 the proper directories can be specified in LDFLAGS (``-L/sw/lib`` for Fink,
1555 ``-L/opt/local/lib`` for DarwinPorts) and CPPFLAGS (``-I/sw/include`` for
1556 Fink, ``-I/opt/local/include`` for DarwinPorts).
1558 - Test in configure.in that checks for tzset no longer dependent on tm->tm_zone
1559 to exist in the struct (not required by either ISO C nor the UNIX 2 spec).
1560 Tests for sanity in tzname when HAVE_TZNAME defined were also defined.
1561 Closes bug #1096244. Thanks Gregory Bond.
1566 - ``PyMem_{Del, DEL}`` and ``PyMem_{Free, FREE}`` no longer map to
1567 ``PyObject_{Free, FREE}``. They map to the system ``free()`` now. If memory
1568 is obtained via the ``PyObject_`` family, it must be released via the
1569 ``PyObject_`` family, and likewise for the ``PyMem_`` family. This has
1570 always been officially true, but when Python's small-object allocator was
1571 introduced, an attempt was made to cater to a few extension modules
1572 discovered at the time that obtained memory via ``PyObject_New`` but
1573 released it via ``PyMem_DEL``. It's years later, and if such code still
1574 exists it will fail now (probably with segfaults, but calling wrong
1575 low-level memory management functions can yield many symptoms).
1577 - Added a C API for set and frozenset objects.
1579 - Removed PyRange_New().
1581 - Patch #1313939: PyUnicode_DecodeCharmap() accepts a unicode string as the
1582 mapping argument now. This string is used as a mapping table. Byte values
1583 greater than the length of the string and 0xFFFE are treated as undefined
1590 - In test_os, st_?time is now truncated before comparing it with ST_?TIME.
1592 - Patch #1276356: New resource "urlfetch" is implemented. This enables
1593 even impatient people to run tests that require remote files.
1599 - Bug #1402224: Add warning to dl docs about crashes.
1601 - Bug #1396471: Document that Windows' ftell() can return invalid
1602 values for text files with UNIX-style line endings.
1604 - Bug #1274828: Document os.path.splitunc().
1606 - Bug #1190204: Clarify which directories are searched by site.py.
1608 - Bug #1193849: Clarify os.path.expanduser() documentation.
1610 - Bug #1243192: re.UNICODE and re.LOCALE affect \d, \D, \s and \S.
1612 - Bug #755617: Document the effects of os.chown() on Windows.
1614 - Patch #1180012: The documentation for modulefinder is now in the library reference.
1616 - Patch #1213031: Document that os.chown() accepts argument values of -1.
1618 - Bug #1190563: Document os.waitpid() return value with WNOHANG flag.
1620 - Bug #1175022: Correct the example code for property().
1622 - Document the IterableUserDict class in the UserDict module.
1623 Closes bug #1166582.
1625 - Remove all latent references for "Macintosh" that referred to semantics for
1626 Mac OS 9 and change to reflect the state for OS X.
1627 Closes patch #1095802. Thanks Jack Jansen.
1636 - FreeBSD 7 support is added.
1642 - Created Misc/Vim/vim_syntax.py to auto-generate a python.vim file in that
1643 directory for syntax highlighting in Vim. Vim directory was added and placed
1644 vimrc to it (was previous up a level).
1646 - Added two new files to Tools/scripts: pysource.py, which recursively
1647 finds Python source files, and findnocoding.py, which finds Python
1648 source files that need an encoding declaration.
1649 Patch #784089, credits to Oleg Broytmann.
1651 - Bug #1072853: pindent.py used an uninitialized variable.
1653 - Patch #1177597: Correct Complex.__init__.
1655 - Fixed a display glitch in Pynche, which could cause the right arrow to
1656 wiggle over by a pixel.
1660 **(For information about older versions, consult the HISTORY file.)**