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.
45 - Bug #1512695: cPickle.loads could crash if it was interrupted with
51 - Bug #1513032: 'make install' failed on FreeBSD 5.3 due to lib-old
52 trying to be installed even though it's empty.
57 - Call os.waitpid() at the end of tests that spawn child processes in order
58 to minimize resources (zombies).
63 - Patch #1509163: MS Toolkit Compiler no longer available.
66 What's New in Python 2.5 beta 1?
67 ================================
69 *Release date: 20-JUN-2006*
74 - Patch #1507676: Error messages returned by invalid abstract object operations
75 (such as iterating over an integer) have been improved and now include the
76 type of the offending object to help with debugging.
78 - Bug #992017: A classic class that defined a __coerce__() method that returned
79 its arguments swapped would infinitely recurse and segfault the interpreter.
81 - Fix the socket tests so they can be run concurrently.
83 - Removed 5 integers from C frame objects (PyFrameObject).
84 f_nlocals, f_ncells, f_nfreevars, f_stack_size, f_restricted.
86 - Bug #532646: object.__call__() will continue looking for the __call__
87 attribute on objects until one without one is found. This leads to recursion
88 when you take a class and set its __call__ attribute to an instance of the
89 class. Originally fixed for classic classes, but this fix is for new-style.
90 Removes the infinite_rec_3 crasher.
92 - The string and unicode methods startswith() and endswith() now accept
93 a tuple of prefixes/suffixes to look for. Implements RFE #1491485.
95 - Buffer objects, at the C level, never used the char buffer
96 implementation even when the char buffer for the wrapped object was
97 explicitly requested (originally returned the read or write buffer).
98 Now a TypeError is raised if the char buffer is not present but is
101 - Patch #1346214: Statements like "if 0: suite" are now again optimized
102 away like they were in Python 2.4.
104 - Builtin exceptions are now full-blown new-style classes instead of
105 instances pretending to be classes, which speeds up exception handling
106 by about 80% in comparison to 2.5a2.
108 - Patch #1494554: Update unicodedata.numeric and unicode.isnumeric to
111 - Patch #921466: sys.path_importer_cache is now used to cache valid and
112 invalid file paths for the built-in import machinery which leads to
113 fewer open calls on startup.
115 - Patch #1442927: ``long(str, base)`` is now up to 6x faster for non-power-
116 of-2 bases. The largest speedup is for inputs with about 1000 decimal
117 digits. Conversion from non-power-of-2 bases remains quadratic-time in
118 the number of input digits (it was and remains linear-time for bases
121 - Bug #1334662: ``int(string, base)`` could deliver a wrong answer
122 when ``base`` was not 2, 4, 8, 10, 16 or 32, and ``string`` represented
123 an integer close to ``sys.maxint``. This was repaired by patch
124 #1335972, which also gives a nice speedup.
126 - Patch #1337051: reduced size of frame objects.
128 - PyErr_NewException now accepts a tuple of base classes as its
131 - Patch #876206: function call speedup by retaining allocated frame
134 - Bug #1462152: file() now checks more thoroughly for invalid mode
135 strings and removes a possible "U" before passing the mode to the
138 - Patch #1488312, Fix memory alignment problem on SPARC in unicode
140 - Bug #1487966: Fix SystemError with conditional expression in assignment
142 - WindowsError now has two error code attributes: errno, which carries
143 the error values from errno.h, and winerror, which carries the error
144 values from winerror.h. Previous versions put the winerror.h values
145 (from GetLastError()) into the errno attribute.
147 - Patch #1475845: Raise IndentationError for unexpected indent.
149 - Patch #1479181: split open() and file() from being aliases for each other.
151 - Patch #1497053 & bug #1275608: Exceptions occurring in ``__eq__()``
152 methods were always silently ignored by dictionaries when comparing keys.
153 They are now passed through (except when using the C API function
154 ``PyDict_GetItem()``, whose semantics did not change).
156 - Bug #1456209: In some obscure cases it was possible for a class with a
157 custom ``__eq__()`` method to confuse dict internals when class instances
158 were used as a dict's keys and the ``__eq__()`` method mutated the dict.
159 No, you don't have any code that did this ;-)
164 - Bug #1295808: expat symbols should be namespaced in pyexpat
166 - Patch #1462338: Upgrade pyexpat to expat 2.0.0
168 - Change binascii.hexlify to accept a read-only buffer instead of only a char
169 buffer and actually follow its documentation.
171 - Fixed a potentially invalid memory access of CJKCodecs' shift-jis decoder.
173 - Patch #1478788 (modified version): The functional extension module has
174 been renamed to _functools and a functools Python wrapper module added.
175 This provides a home for additional function related utilities that are
176 not specifically about functional programming. See PEP 309.
178 - Patch #1493701: performance enhancements for struct module.
180 - Patch #1490224: time.altzone is now set correctly on Cygwin.
182 - Patch #1435422: zlib's compress and decompress objects now have a
185 - Patch #1454481: thread stack size is now tunable at runtime for thread
186 enabled builds on Windows and systems with Posix threads support.
188 - On Win32, os.listdir now supports arbitrarily-long Unicode path names
189 (up to the system limit of 32K characters).
191 - Use Win32 API to implement os.{access,chdir,chmod,mkdir,remove,rename,rmdir,utime}.
192 As a result, these functions now raise WindowsError instead of OSError.
194 - ``time.clock()`` on Win64 should use the high-performance Windows
195 ``QueryPerformanceCounter()`` now (as was already the case on 32-bit
198 - Calling Tk_Init twice is refused if the first call failed as that
201 - bsddb: added the DB_ARCH_REMOVE flag and fixed db.DBEnv.log_archive() to
202 accept it without potentially using an uninitialized pointer.
204 - bsddb: added support for the DBEnv.log_stat() and DBEnv.lsn_reset() methods
205 assuming BerkeleyDB >= 4.0 and 4.4 respectively. [pybsddb project SF
206 patch numbers 1494885 and 1494902]
208 - bsddb: added an interface for the BerkeleyDB >= 4.3 DBSequence class.
209 [pybsddb project SF patch number 1466734]
211 - bsddb: fix DBCursor.pget() bug with keyword argument names when no data
212 parameter is supplied. [SF pybsddb bug #1477863]
214 - bsddb: the __len__ method of a DB object has been fixed to return correct
215 results. It could previously incorrectly return 0 in some cases.
216 Fixes SF bug 1493322 (pybsddb bug 1184012).
218 - bsddb: the bsddb.dbtables Modify method now raises the proper error and
219 aborts the db transaction safely when a modifier callback fails.
220 Fixes SF python patch/bug #1408584.
222 - bsddb: multithreaded DB access using the simple bsddb module interface
223 now works reliably. It has been updated to use automatic BerkeleyDB
224 deadlock detection and the bsddb.dbutils.DeadlockWrap wrapper to retry
225 database calls that would previously deadlock. [SF python bug #775414]
227 - Patch #1446489: add support for the ZIP64 extensions to zipfile.
229 - Patch #1506645: add Python wrappers for the curses functions
230 is_term_resized, resize_term and resizeterm.
235 - Patch #815924: Restore ability to pass type= and icon= in tkMessageBox
238 - Patch #812986: Update turtle output even if not tracing.
240 - Patch #1494750: Destroy master after deleting children in
243 - Patch #1096231: Add ``default`` argument to Tkinter.Wm.wm_iconbitmap.
245 - Patch #763580: Add name and value arguments to Tkinter variable
248 - Bug #1117556: SimpleHTTPServer now tries to find and use the system's
249 mime.types file for determining MIME types.
251 - Bug #1339007: Shelf objects now don't raise an exception in their
252 __del__ method when initialization failed.
254 - Patch #1455898: The MBCS codec now supports the incremental mode for
255 double-byte encodings.
257 - ``difflib``'s ``SequenceMatcher.get_matching_blocks()`` was changed to
258 guarantee that adjacent triples in the return list always describe
259 non-adjacent blocks. Previously, a pair of matching blocks could end
260 up being described by multiple adjacent triples that formed a partition
261 of the matching pair.
263 - Bug #1498146: fix optparse to handle Unicode strings in option help,
264 description, and epilog.
266 - Bug #1366250: minor optparse documentation error.
268 - Bug #1361643: fix textwrap.dedent() so it handles tabs appropriately;
271 - The wsgiref package has been added to the standard library.
273 - The functions update_wrapper() and wraps() have been added to the functools
274 module. These make it easier to copy relevant metadata from the original
275 function when writing wrapper functions.
277 - The optional ``isprivate`` argument to ``doctest.testmod()``, and the
278 ``doctest.is_private()`` function, both deprecated in 2.4, were removed.
280 - Patch #1359618: Speed up charmap encoder by using a trie structure
283 - The functions in the ``pprint`` module now sort dictionaries by key
284 before computing the display. Before 2.5, ``pprint`` sorted a dictionary
285 if and only if its display required more than one line, although that
286 wasn't documented. The new behavior increases predictability; e.g.,
287 using ``pprint.pprint(a_dict)`` in a doctest is now reliable.
289 - Patch #1497027: try HTTP digest auth before basic auth in urllib2
290 (thanks for J. J. Lee).
292 - Patch #1496206: improve urllib2 handling of passwords with respect to
293 default HTTP and HTTPS ports.
295 - Patch #1080727: add "encoding" parameter to doctest.DocFileSuite.
297 - Patch #1281707: speed up gzip.readline.
299 - Patch #1180296: Two new functions were added to the locale module:
300 format_string() to get the effect of "format % items" but locale-aware,
301 and currency() to format a monetary number with currency sign.
303 - Patch #1486962: Several bugs in the turtle Tk demo module were fixed
304 and several features added, such as speed and geometry control.
306 - Patch #1488881: add support for external file objects in bz2 compressed
309 - Patch #721464: pdb.Pdb instances can now be given explicit stdin and
310 stdout arguments, making it possible to redirect input and output
311 for remote debugging.
313 - Patch #1484695: Update the tarfile module to version 0.8. This fixes
314 a couple of issues, notably handling of long file names using the
315 GNU LONGNAME extension.
317 - Patch #1478292. ``doctest.register_optionflag(name)`` shouldn't create a
318 new flag when ``name`` is already the name of an option flag.
320 - Bug #1385040: don't allow "def foo(a=1, b): pass" in the compiler
323 - Patch #1472854: make the rlcompleter.Completer class usable on non-
326 - Patch #1470846: fix urllib2 ProxyBasicAuthHandler.
328 - Bug #1472827: correctly escape newlines and tabs in attribute values in
329 the saxutils.XMLGenerator class.
335 - Bug #1502728: Correctly link against librt library on HP-UX.
337 - OpenBSD 3.9 is supported now.
339 - Patch #1492356: Port to Windows CE.
341 - Bug/Patch #1481770: Use .so extension for shared libraries on HP-UX for ia64.
343 - Patch #1471883: Add --enable-universalsdk.
359 What's New in Python 2.5 alpha 2?
360 =================================
362 *Release date: 27-APR-2006*
367 - Bug #1465834: 'bdist_wininst preinstall script support' was fixed
368 by converting these apis from macros into exported functions again:
370 PyParser_SimpleParseFile PyParser_SimpleParseString PyRun_AnyFile
371 PyRun_AnyFileEx PyRun_AnyFileFlags PyRun_File PyRun_FileEx
372 PyRun_FileFlags PyRun_InteractiveLoop PyRun_InteractiveOne
373 PyRun_SimpleFile PyRun_SimpleFileEx PyRun_SimpleString
374 PyRun_String Py_CompileString
376 - Under COUNT_ALLOCS, types are not necessarily immortal anymore.
378 - All uses of PyStructSequence_InitType have been changed to initialize
379 the type objects only once, even if the interpreter is initialized
382 - Bug #1454485, array.array('u') could crash the interpreter. This was
383 due to PyArgs_ParseTuple(args, 'u#', ...) trying to convert buffers (strings)
384 to unicode when it didn't make sense. 'u#' now requires a unicode string.
386 - Py_UNICODE is unsigned. It was always documented as unsigned, but
387 due to a bug had a signed value in previous versions.
389 - Patch #837242: ``id()`` of any Python object always gives a positive
390 number now, which might be a long integer. ``PyLong_FromVoidPtr`` and
391 ``PyLong_AsVoidPtr`` have been changed accordingly. Note that it has
392 never been correct to implement a ``__hash()__`` method that returns the
393 ``id()`` of an object:
396 return id(self) # WRONG
398 because a hash result must be a (short) Python int but it was always
399 possible for ``id()`` to return a Python long. However, because ``id()``
400 could return negative values before, on a 32-bit box an ``id()`` result
401 was always usable as a hash value before this patch. That's no longer
404 - Python on OS X 10.3 and above now uses dlopen() (via dynload_shlib.c)
405 to load extension modules and now provides the dl module. As a result,
406 sys.setdlopenflags() now works correctly on these systems. (SF patch
409 - Patch #1463867: enhanced garbage collection to allow cleanup of cycles
410 involving generators that have paused outside of any ``try`` or ``with``
411 blocks. (In 2.5a1, a paused generator that was part of a reference
412 cycle could not be garbage collected, regardless of whether it was
413 paused in a ``try`` or ``with`` block.)
418 - Patch #1191065: Fix preprocessor problems on systems where recvfrom
421 - Bug #1467952: os.listdir() now correctly raises an error if readdir()
422 fails with an error condition.
424 - Fixed bsddb.db.DBError derived exceptions so they can be unpickled.
426 - Bug #1117761: bsddb.*open() no longer raises an exception when using
427 the cachesize parameter.
429 - Bug #1149413: bsddb.*open() no longer raises an exception when using
430 a temporary db (file=None) with the 'n' flag to truncate on open.
432 - Bug #1332852: bsddb module minimum BerkeleyDB version raised to 3.3
433 as older versions cause excessive test failures.
435 - Patch #1062014: AF_UNIX sockets under Linux have a special
436 abstract namespace that is now fully supported.
441 - Patch #1475231: ``doctest`` has a new ``SKIP`` option, which causes
442 a doctest to be skipped (the code is not run, and the expected output
443 or exception is ignored).
445 - Fixed contextlib.nested to cope with exceptions being raised and
446 caught inside exit handlers.
448 - Updated optparse module to Optik 1.5.1 (allow numeric constants in
449 hex, octal, or binary; add ``append_const`` action; keep going if
450 gettext cannot be imported; added ``OptionParser.destroy()`` method;
451 added ``epilog`` for better help generation).
453 - Bug #1473760: ``tempfile.TemporaryFile()`` could hang on Windows, when
454 called from a thread spawned as a side effect of importing a module.
456 - The pydoc module now supports documenting packages contained in
459 - The pkgutil module now has several new utility functions, such
460 as ``walk_packages()`` to support working with packages that are either
461 in the filesystem or zip files.
463 - The mailbox module can now modify and delete messages from
464 mailboxes, in addition to simply reading them. Thanks to Gregory
465 K. Johnson for writing the code, and to the 2005 Google Summer of
466 Code for funding his work.
468 - The ``__del__`` method of class ``local`` in module ``_threading_local``
469 returned before accomplishing any of its intended cleanup.
471 - Patch #790710: Add breakpoint command lists in pdb.
473 - Patch #1063914: Add Tkinter.Misc.clipboard_get().
475 - Patch #1191700: Adjust column alignment in bdb breakpoint lists.
477 - SimpleXMLRPCServer relied on the fcntl module, which is unavailable on
478 Windows. Bug #1469163.
480 - The warnings, linecache, inspect, traceback, site, and doctest modules
481 were updated to work correctly with modules imported from zipfiles or
482 via other PEP 302 __loader__ objects.
484 - Patch #1467770: Reduce usage of subprocess._active to processes which
485 the application hasn't waited on.
487 - Patch #1462222: Fix Tix.Grid.
489 - Fix exception when doing glob.glob('anything*/')
491 - The pstats.Stats class accepts an optional stream keyword argument to
492 direct output to an alternate file-like object.
497 - The Makefile now has a reindent target, which runs reindent.py on
500 - Patch #1470875: Building Python with MS Free Compiler
502 - Patch #1161914: Add a python-config script.
504 - Patch #1324762:Remove ccpython.cc; replace --with-cxx with
505 --with-cxx-main. Link with C++ compiler only if --with-cxx-main was
506 specified. (Can be overridden by explicitly setting LINKCC.) Decouple
507 CXX from --with-cxx-main, see description in README.
509 - Patch #1429775: Link extension modules with the shared libpython.
511 - Fixed a libffi build problem on MIPS systems.
513 - ``PyString_FromFormat``, ``PyErr_Format``, and ``PyString_FromFormatV``
514 now accept formats "%u" for unsigned ints, "%lu" for unsigned longs,
515 and "%zu" for unsigned integers of type ``size_t``.
520 - test_contextlib now checks contextlib.nested can cope with exceptions
521 being raised and caught inside exit handlers.
523 - test_cmd_line now checks operation of the -m and -c command switches
525 - The test_contextlib test in 2.5a1 wasn't actually run unless you ran
526 it separately and by hand. It also wasn't cleaning up its changes to
527 the current Decimal context.
529 - regrtest.py now has a -M option to run tests that test the new limits of
530 containers, on 64-bit architectures. Running these tests is only sensible
531 on 64-bit machines with more than two gigabytes of memory. The argument
532 passed is the maximum amount of memory for the tests to use.
537 - Added the Python benchmark suite pybench to the Tools/ directory;
538 contributed by Marc-Andre Lemburg.
543 - Patch #1473132: Improve docs for ``tp_clear`` and ``tp_traverse``.
545 - PEP 343: Added Context Types section to the library reference
546 and attempted to bring other PEP 343 related documentation into
547 line with the implementation and/or python-dev discussions.
549 - Bug #1337990: clarified that ``doctest`` does not support examples
550 requiring both expected output and an exception.
553 What's New in Python 2.5 alpha 1?
554 =================================
556 *Release date: 05-APR-2006*
561 - PEP 338: -m command line switch now delegates to runpy.run_module
562 allowing it to support modules in packages and zipfiles
564 - On Windows, .DLL is not an accepted file name extension for
565 extension modules anymore; extensions are only found if they
568 - Bug #1421664: sys.stderr.encoding is now set to the same value as
571 - __import__ accepts keyword arguments.
573 - Patch #1460496: round() now accepts keyword arguments.
575 - Fixed bug #1459029 - unicode reprs were double-escaped.
577 - Patch #1396919: The system scope threads are reenabled on FreeBSD
578 5.4 and later versions.
580 - Bug #1115379: Compiling a Unicode string with an encoding declaration
581 now gives a SyntaxError.
583 - Previously, Python code had no easy way to access the contents of a
584 cell object. Now, a ``cell_contents`` attribute has been added
585 (closes patch #1170323).
587 - Patch #1123430: Python's small-object allocator now returns an arena to
588 the system ``free()`` when all memory within an arena becomes unused
589 again. Prior to Python 2.5, arenas (256KB chunks of memory) were never
590 freed. Some applications will see a drop in virtual memory size now,
591 especially long-running applications that, from time to time, temporarily
592 use a large number of small objects. Note that when Python returns an
593 arena to the platform C's ``free()``, there's no guarantee that the
594 platform C library will in turn return that memory to the operating system.
595 The effect of the patch is to stop making that impossible, and in tests it
596 appears to be effective at least on Microsoft C and gcc-based systems.
597 Thanks to Evan Jones for hard work and patience.
599 - Patch #1434038: property() now uses the getter's docstring if there is
600 no "doc" argument given. This makes it possible to legitimately use
601 property() as a decorator to produce a read-only property.
603 - PEP 357, patch 1436368: add an __index__ method to int/long and a matching
604 nb_index slot to the PyNumberMethods struct. The slot is consulted instead
605 of requiring an int or long in slicing and a few other contexts, enabling
606 other objects (e.g. Numeric Python's integers) to be used as slice indices.
608 - Fixed various bugs reported by Coverity's Prevent tool.
610 - PEP 352, patch #1104669: Make exceptions new-style objects. Introduced the
611 new exception base class, BaseException, which has a new message attribute.
612 KeyboardInterrupt and SystemExit to directly inherit from BaseException now.
613 Raising a string exception now raises a DeprecationWarning.
615 - Patch #1438387, PEP 328: relative and absolute imports. Imports can now be
616 explicitly relative, using 'from .module import name' to mean 'from the same
617 package as this module is in. Imports without dots still default to the
618 old relative-then-absolute, unless 'from __future__ import
619 absolute_import' is used.
621 - Properly check if 'warnings' raises an exception (usually when a filter set
622 to "error" is triggered) when raising a warning for raising string
625 - CO_GENERATOR_ALLOWED is no longer defined. This behavior is the default.
626 The name was removed from Include/code.h.
628 - PEP 308: conditional expressions were added: (x if cond else y).
631 - The copy module now "copies" function objects (as atomic objects).
632 - dict.__getitem__ now looks for a __missing__ hook before raising
635 - PEP 343: with statement implemented. Needs ``from __future__ import
636 with_statement``. Use of 'with' as a variable will generate a warning.
637 Use of 'as' as a variable will also generate a warning (unless it's
638 part of an import statement).
639 The following objects have __context__ methods:
640 - The built-in file type.
641 - The thread.LockType type.
642 - The following types defined by the threading module:
643 Lock, RLock, Condition, Semaphore, BoundedSemaphore.
644 - The decimal.Context class.
646 - Fix the encodings package codec search function to only search
647 inside its own package. Fixes problem reported in patch #1433198.
649 Note: Codec packages should implement and register their own
650 codec search function. PEP 100 has the details.
652 - PEP 353: Using ``Py_ssize_t`` as the index type.
654 - ``PYMALLOC_DEBUG`` builds now add ``4*sizeof(size_t)`` bytes of debugging
655 info to each allocated block, since the ``Py_ssize_t`` changes (PEP 353)
656 now allow Python to make use of memory blocks exceeding 2**32 bytes for
657 some purposes on 64-bit boxes. A ``PYMALLOC_DEBUG`` build was limited
658 to 4-byte allocations before.
660 - Patch #1400181, fix unicode string formatting to not use the locale.
661 This is how string objects work. u'%f' could use , instead of .
662 for the decimal point. Now both strings and unicode always use periods.
664 - Bug #1244610, #1392915, fix build problem on OpenBSD 3.7 and 3.8.
665 configure would break checking curses.h.
667 - Bug #959576: The pwd module is now builtin. This allows Python to be
668 built on UNIX platforms without $HOME set.
670 - Bug #1072182, fix some potential problems if characters are signed.
672 - Bug #889500, fix line number on SyntaxWarning for global declarations.
674 - Bug #1378022, UTF-8 files with a leading BOM crashed the interpreter.
676 - Support for converting hex strings to floats no longer works.
677 This was not portable. float('0x3') now raises a ValueError.
679 - Patch #1382163: Expose Subversion revision number to Python. New C API
680 function Py_GetBuildNumber(). New attribute sys.subversion. Build number
681 is now displayed in interactive prompt banner.
683 - Implementation of PEP 341 - Unification of try/except and try/finally.
684 "except" clauses can now be written together with a "finally" clause in
685 one try statement instead of two nested ones. Patch #1355913.
687 - Bug #1379994: Builtin unicode_escape and raw_unicode_escape codec
688 now encodes backslash correctly.
690 - Patch #1350409: Work around signal handling bug in Visual Studio 2005.
692 - Bug #1281408: Py_BuildValue now works correctly even with unsigned longs
695 - SF Bug #1350188, "setdlopenflags" leads to crash upon "import"
696 It was possible for dlerror() to return a NULL pointer, so
697 it will now use a default error message in this case.
699 - Replaced most Unicode charmap codecs with new ones using the
700 new Unicode translate string feature in the builtin charmap
701 codec; the codecs were created from the mapping tables available
702 at ftp.unicode.org and contain a few updates (e.g. the Mac OS
703 encodings now include a mapping for the Apple logo)
705 - Added a few more codecs for Mac OS encodings
707 - Sped up some Unicode operations.
709 - A new AST parser implementation was completed. The abstract
710 syntax tree is available for read-only (non-compile) access
711 to Python code; an _ast module was added.
713 - SF bug #1167751: fix incorrect code being produced for generator expressions.
714 The following code now raises a SyntaxError: foo(a = i for i in range(10))
716 - SF Bug #976608: fix SystemError when mtime of an imported file is -1.
718 - SF Bug #887946: fix segfault when redirecting stdin from a directory.
719 Provide a warning when a directory is passed on the command line.
721 - Fix segfault with invalid coding.
723 - SF bug #772896: unknown encoding results in MemoryError.
725 - All iterators now have a Boolean value of True. Formerly, some iterators
726 supported a __len__() method which evaluated to False when the iterator
729 - On 64-bit platforms, when __len__() returns a value that cannot be
730 represented as a C int, raise OverflowError.
732 - test__locale is skipped on OS X < 10.4 (only partial locale support is
735 - SF bug #893549: parsing keyword arguments was broken with a few format
738 - Changes donated by Elemental Security to make it work on AIX 5.3
739 with IBM's 64-bit compiler (SF patch #1284289). This also closes SF
740 bug #105470: test_pwd fails on 64bit system (Opteron).
742 - Changes donated by Elemental Security to make it work on HP-UX 11 on
743 Itanium2 with HP's 64-bit compiler (SF patch #1225212).
745 - Disallow keyword arguments for type constructors that don't use them
746 (fixes bug #1119418).
748 - Forward UnicodeDecodeError into SyntaxError for source encoding errors.
750 - SF bug #900092: When tracing (e.g. for hotshot), restore 'return' events for
751 exceptions that cause a function to exit.
753 - The implementation of set() and frozenset() was revised to use its
754 own internal data structure. Memory consumption is reduced by 1/3
755 and there are modest speed-ups as well. The API is unchanged.
757 - SF bug #1238681: freed pointer is used in longobject.c:long_pow().
759 - SF bug #1229429: PyObject_CallMethod failed to decrement some
760 reference counts in some error exit cases.
762 - SF bug #1185883: Python's small-object memory allocator took over
763 a block managed by the platform C library whenever a realloc specified
764 a small new size. However, there's no portable way to know then how
765 much of the address space following the pointer is valid, so there's no
766 portable way to copy data from the C-managed block into Python's
767 small-object space without risking a memory fault. Python's small-object
768 realloc now leaves such blocks under the control of the platform C
771 - SF bug #1232517: An overflow error was not detected properly when
772 attempting to convert a large float to an int in os.utime().
774 - SF bug #1224347: hex longs now print with lowercase letters just
775 like their int counterparts.
777 - SF bug #1163563: the original fix for bug #1010677 ("thread Module
778 Breaks PyGILState_Ensure()") broke badly in the case of multiple
779 interpreter states; back out that fix and do a better job (see
780 http://mail.python.org/pipermail/python-dev/2005-June/054258.html
781 for a longer write-up of the problem).
783 - SF patch #1180995: marshal now uses a binary format by default when
786 - SF patch #1181301: on platforms that appear to use IEEE 754 floats,
787 the routines that promise to produce IEEE 754 binary representations
788 of floats now simply copy bytes around.
790 - bug #967182: disallow opening files with 'wU' or 'aU' as specified by PEP
793 - patch #1109424: int, long, float, complex, and unicode now check for the
794 proper magic slot for type conversions when subclassed. Previously the
795 magic slot was ignored during conversion. Semantics now match the way
796 subclasses of str always behaved. int/long/float, conversion of an instance
797 to the base class has been moved to the proper nb_* magic slot and out of
799 Thanks Walter D�rwald.
801 - Descriptors defined in C with a PyGetSetDef structure, where the setter is
802 NULL, now raise an AttributeError when attempting to set or delete the
803 attribute. Previously a TypeError was raised, but this was inconsistent
804 with the equivalent pure-Python implementation.
806 - It is now safe to call PyGILState_Release() before
807 PyEval_InitThreads() (note that if there is reason to believe there
808 are multiple threads around you still must call PyEval_InitThreads()
809 before using the Python API; this fix is for extension modules that
810 have no way of knowing if Python is multi-threaded yet).
812 - Typing Ctrl-C whilst raw_input() was waiting in a build with threads
813 disabled caused a crash.
815 - Bug #1165306: instancemethod_new allowed the creation of a method
816 with im_class == im_self == NULL, which caused a crash when called.
818 - Move exception finalisation later in the shutdown process - this
819 fixes the crash seen in bug #1165761
821 - Added two new builtins, any() and all().
823 - Defining a class with empty parentheses is now allowed
824 (e.g., ``class C(): pass`` is no longer a syntax error).
825 Patch #1176012 added support to the 'parser' module and 'compiler' package
826 (thanks to logistix for that added support).
828 - Patch #1115086: Support PY_LONGLONG in structmember.
830 - Bug #1155938: new style classes did not check that __init__() was
833 - Patch #802188: Report characters after line continuation character
834 ('\') with a specific error message.
836 - Bug #723201: Raise a TypeError for passing bad objects to 'L' format.
838 - Bug #1124295: the __name__ attribute of file objects was
839 inadvertently made inaccessible in restricted mode.
841 - Bug #1074011: closing sys.std{out,err} now causes a flush() and
844 - min() and max() now support key= arguments with the same meaning as in
847 - The peephole optimizer now performs simple constant folding in expressions:
850 - set and frozenset objects can now be marshalled. SF #1098985.
852 - Bug #1077106: Poor argument checking could cause memory corruption
853 in calls to os.read().
855 - The parser did not complain about future statements in illegal
856 positions. It once again reports a syntax error if a future
857 statement occurs after anything other than a doc string.
859 - Change the %s format specifier for str objects so that it returns a
860 unicode instance if the argument is not an instance of basestring and
861 calling __str__ on the argument returns a unicode instance.
863 - Patch #1413181: changed ``PyThreadState_Delete()`` to forget about the
864 current thread state when the auto-GIL-state machinery knows about
865 it (since the thread state is being deleted, continuing to remember it
866 can't help, but can hurt if another thread happens to get created with
872 - Patch #1380952: fix SSL objects timing out on consecutive read()s
874 - Patch #1309579: wait3 and wait4 were added to the posix module.
876 - Patch #1231053: The audioop module now supports encoding/decoding of alaw.
877 In addition, the existing ulaw code was updated.
879 - RFE #567972: Socket objects' family, type and proto properties are
880 now exposed via new attributes.
882 - Everything under lib-old was removed. This includes the following modules:
883 Para, addpack, cmp, cmpcache, codehack, dircmp, dump, find, fmt, grep,
884 lockfile, newdir, ni, packmail, poly, rand, statcache, tb, tzparse,
885 util, whatsound, whrandom, zmod
887 - The following modules were removed: regsub, reconvert, regex, regex_syntax.
889 - re and sre were swapped, so help(re) provides full help. importing sre
890 is deprecated. The undocumented re.engine variable no longer exists.
892 - Bug #1448490: Fixed a bug that ISO-2022 codecs could not handle
893 SS2 (single-shift 2) escape sequences correctly.
895 - The unicodedata module was updated to the 4.1 version of the Unicode
896 database. The 3.2 version is still available as unicodedata.db_3_2_0
897 for applications that require this specific version (such as IDNA).
899 - The timing module is no longer built by default. It was deprecated
900 in PEP 4 in Python 2.0 or earlier.
902 - Patch 1433928: Added a new type, defaultdict, to the collections module.
903 This uses the new __missing__ hook behavior added to dict (see above).
905 - Bug #854823: socketmodule now builds on Sun platforms even when
906 INET_ADDRSTRLEN is not defined.
908 - Patch #1393157: os.startfile() now has an optional argument to specify
909 a "command verb" to invoke on the file.
911 - Bug #876637, prevent stack corruption when socket descriptor
912 is larger than FD_SETSIZE.
914 - Patch #1407135, bug #1424041: harmonize mmap behavior of anonymous memory.
915 mmap.mmap(-1, size) now returns anonymous memory in both Unix and Windows.
916 mmap.mmap(0, size) should not be used on Windows for anonymous memory.
918 - Patch #1422385: The nis module now supports access to domains other
919 than the system default domain.
921 - Use Win32 API to implement os.stat/fstat. As a result, subsecond timestamps
922 are reported, the limit on path name lengths is removed, and stat reports
923 WindowsError now (instead of OSError).
925 - Add bsddb.db.DBEnv.set_tx_timestamp allowing time based database recovery.
927 - Bug #1413192, fix seg fault in bsddb if a transaction was deleted
930 - Patch #1103116: Basic AF_NETLINK support.
932 - Bug #1402308, (possible) segfault when using mmap.mmap(-1, ...)
934 - Bug #1400822, _curses over{lay,write} doesn't work when passing 6 ints.
935 Also fix ungetmouse() which did not accept arguments properly.
936 The code now conforms to the documented signature.
938 - Bug #1400115, Fix segfault when calling curses.panel.userptr()
939 without prior setting of the userptr.
941 - Fix 64-bit problems in bsddb.
943 - Patch #1365916: fix some unsafe 64-bit mmap methods.
945 - Bug #1290333: Added a workaround for cjkcodecs' _codecs_cn build
948 - Bug #869197: os.setgroups rejects long integer arguments
950 - Bug #1346533, select.poll() doesn't raise an error if timeout > sys.maxint
952 - Bug #1344508, Fix UNIX mmap leaking file descriptors
954 - Patch #1338314, Bug #1336623: fix tarfile so it can extract
955 REGTYPE directories from tarfiles written by old programs.
957 - Patch #1407992, fixes broken bsddb module db associate when using
958 BerkeleyDB 3.3, 4.0 or 4.1.
960 - Get bsddb module to build with BerkeleyDB version 4.4
962 - Get bsddb module to build with BerkeleyDB version 3.2
964 - Patch #1309009, Fix segfault in pyexpat when the XML document is in latin_1,
965 but Python incorrectly assumes it is in UTF-8 format
967 - Fix parse errors in the readline module when compiling without threads.
969 - Patch #1288833: Removed thread lock from socket.getaddrinfo on
970 FreeBSD 5.3 and later versions which got thread-safe getaddrinfo(3).
972 - Patches #1298449 and #1298499: Add some missing checks for error
973 returns in cStringIO.c.
975 - Patch #1297028: fix segfault if call type on MultibyteCodec,
976 MultibyteStreamReader, or MultibyteStreamWriter
978 - Fix memory leak in posix.access().
980 - Patch #1213831: Fix typo in unicodedata._getcode.
982 - Bug #1007046: os.startfile() did not accept unicode strings encoded in
983 the file system encoding.
985 - Patch #756021: Special-case socket.inet_aton('255.255.255.255') for
986 platforms that don't have inet_aton().
988 - Bug #1215928: Fix bz2.BZ2File.seek() for 64-bit file offsets.
990 - Bug #1191043: Fix bz2.BZ2File.(x)readlines for files containing one
991 line without newlines.
993 - Bug #728515: mmap.resize() now resizes the file on Unix as it did
996 - Patch #1180695: Add nanosecond stat resolution, and st_gen,
997 st_birthtime for FreeBSD.
999 - Patch #1231069: The fcntl.ioctl function now uses the 'I' code for
1000 the request code argument, which results in more C-like behaviour
1001 for large or negative values.
1003 - Bug #1234979: For the argument of thread.Lock.acquire, the Windows
1004 implementation treated all integer values except 1 as false.
1006 - Bug #1194181: bz2.BZ2File didn't handle mode 'U' correctly.
1008 - Patch #1212117: os.stat().st_flags is now accessible as a attribute
1009 if available on the platform.
1011 - Patch #1103951: Expose O_SHLOCK and O_EXLOCK in the posix module if
1012 available on the platform.
1014 - Bug #1166660: The readline module could segfault if hook functions
1015 were set in a different thread than that which called readline.
1017 - collections.deque objects now support a remove() method.
1019 - operator.itemgetter() and operator.attrgetter() now support retrieving
1020 multiple fields. This provides direct support for sorting on multiple
1021 keys (primary, secondary, etc).
1023 - os.access now supports Unicode path names on non-Win32 systems.
1025 - Patches #925152, #1118602: Avoid reading after the end of the buffer
1026 in pyexpat.GetInputContext.
1028 - Patches #749830, #1144555: allow UNIX mmap size to default to current
1031 - Added functional.partial(). See PEP309.
1033 - Patch #1093585: raise a ValueError for negative history items in readline.
1034 {remove_history,replace_history}
1036 - The spwd module has been added, allowing access to the shadow password
1039 - stat_float_times is now True.
1041 - array.array objects are now picklable.
1043 - the cPickle module no longer accepts the deprecated None option in the
1044 args tuple returned by __reduce__().
1046 - itertools.islice() now accepts None for the start and step arguments.
1047 This allows islice() to work more readily with slices:
1048 islice(s.start, s.stop, s.step)
1050 - datetime.datetime() now has a strptime class method which can be used to
1051 create datetime object using a string and format.
1053 - Patch #1117961: Replace the MD5 implementation from RSA Data Security Inc
1054 with the implementation from http://sourceforge.net/projects/libmd5-rfc/.
1059 - PEP 338: new module runpy defines a run_module function to support
1060 executing modules which provide access to source code or a code object
1061 via the PEP 302 import mechanisms.
1063 - The email module's parsedate_tz function now sets the daylight savings
1064 flag to -1 (unknown) since it can't tell from the date whether it should
1067 - Patch #624325: urlparse.urlparse() and urlparse.urlsplit() results
1068 now sport attributes that provide access to the parts of the result.
1070 - Patch #1462498: sgmllib now handles entity and character references
1071 in attribute values.
1073 - Added the sqlite3 package. This is based on pysqlite2.1.3, and provides
1074 a DB-API interface in the standard library. You'll need sqlite 3.0.8 or
1075 later to build this - if you have an earlier version, the C extension
1076 module will not be built.
1078 - Bug #1460340: ``random.sample(dict)`` failed in various ways. Dicts
1079 aren't officially supported here, and trying to use them will probably
1080 raise an exception some day. But dicts have been allowed, and "mostly
1081 worked", so support for them won't go away without warning.
1083 - Bug #1445068: getpass.getpass() can now be given an explicit stream
1084 argument to specify where to write the prompt.
1086 - Patch #1462313, bug #1443328: the pickle modules now can handle classes
1087 that have __private names in their __slots__.
1089 - Bug #1250170: mimetools now handles socket.gethostname() failures gracefully.
1091 - patch #1457316: "setup.py upload" now supports --identity to select the
1092 key to be used for signing the uploaded code.
1094 - Queue.Queue objects now support .task_done() and .join() methods
1095 to make it easier to monitor when daemon threads have completed
1096 processing all enqueued tasks. Patch #1455676.
1098 - popen2.Popen objects now preserve the command in a .cmd attribute.
1100 - Added the ctypes ffi package.
1102 - email 4.0 package now integrated. This is largely the same as the email 3.0
1103 package that was included in Python 2.3, except that PEP 8 module names are
1104 now used (e.g. mail.message instead of email.Message). The MIME classes
1105 have been moved to a subpackage (e.g. email.mime.text instead of
1106 email.MIMEText). The old names are still supported for now. Several
1107 deprecated Message methods have been removed and lots of bugs have been
1108 fixed. More details can be found in the email package documentation.
1110 - Patches #1436130/#1443155: codecs.lookup() now returns a CodecInfo object
1111 (a subclass of tuple) that provides incremental decoders and encoders
1112 (a way to use stateful codecs without the stream API). Python functions
1113 codecs.getincrementaldecoder() and codecs.getincrementalencoder() as well
1114 as C functions PyCodec_IncrementalEncoder() and PyCodec_IncrementalDecoder()
1117 - Patch #1359365: Calling next() on a closed StringIO.String object raises
1118 a ValueError instead of a StopIteration now (like file and cString.String do).
1119 cStringIO.StringIO.isatty() will raise a ValueError now if close() has been
1120 called before (like file and StringIO.StringIO do).
1122 - A regrtest option -w was added to re-run failed tests in verbose mode.
1124 - Patch #1446372: quit and exit can now be called from the interactive
1125 interpreter to exit.
1127 - The function get_count() has been added to the gc module, and gc.collect()
1128 grew an optional 'generation' argument.
1130 - A library msilib to generate Windows Installer files, and a distutils
1131 command bdist_msi have been added.
1133 - PEP 343: new module contextlib.py defines decorator @contextmanager
1134 and helpful context managers nested() and closing().
1136 - The compiler package now supports future imports after the module docstring.
1138 - Bug #1413790: zipfile now sanitizes absolute archive names that are
1139 not allowed by the specs.
1141 - Patch #1215184: FileInput now can be given an opening hook which can
1142 be used to control how files are opened.
1144 - Patch #1212287: fileinput.input() now has a mode parameter for
1145 specifying the file mode input files should be opened with.
1147 - Patch #1215184: fileinput now has a fileno() function for getting the
1148 current file number.
1150 - Patch #1349274: gettext.install() now optionally installs additional
1151 translation functions other than _() in the builtin namespace.
1153 - Patch #1337756: fileinput now accepts Unicode filenames.
1155 - Patch #1373643: The chunk module can now read chunks larger than
1158 - Patch #1417555: SimpleHTTPServer now returns Last-Modified headers.
1160 - Bug #1430298: It is now possible to send a mail with an empty
1161 return address using smtplib.
1163 - Bug #1432260: The names of lambda functions are now properly displayed
1166 - Patch #1412872: zipfile now sets the creator system to 3 (Unix)
1167 unless the system is Win32.
1169 - Patch #1349118: urllib now supports user:pass@ style proxy
1170 specifications, raises IOErrors when proxies for unsupported protocols
1171 are defined, and uses the https proxy on https redirections.
1173 - Bug #902075: urllib2 now supports 'host:port' style proxy specifications.
1175 - Bug #1407902: Add support for sftp:// URIs to urlparse.
1177 - Bug #1371247: Update Windows locale identifiers in locale.py.
1179 - Bug #1394565: SimpleHTTPServer now doesn't choke on query parameters
1182 - Bug #1403410: The warnings module now doesn't get confused
1183 when it can't find out the module name it generates a warning for.
1185 - Patch #1177307: Added a new codec utf_8_sig for UTF-8 with a BOM signature.
1187 - Patch #1157027: cookielib mishandles RFC 2109 cookies in Netscape mode
1189 - Patch #1117398: cookielib.LWPCookieJar and .MozillaCookieJar now raise
1190 LoadError as documented, instead of IOError. For compatibility,
1191 LoadError subclasses IOError.
1193 - Added the hashlib module. It provides secure hash functions for MD5 and
1194 SHA1, 224, 256, 384, and 512. Note that recent developments make the
1195 historic MD5 and SHA1 unsuitable for cryptographic-strength applications.
1196 In <http://mail.python.org/pipermail/python-dev/2005-December/058850.html>
1197 Ronald L. Rivest offered this advice for Python:
1199 "The consensus of researchers in this area (at least as
1200 expressed at the NIST Hash Function Workshop 10/31/05),
1201 is that SHA-256 is a good choice for the time being, but
1202 that research should continue, and other alternatives may
1203 arise from this research. The larger SHA's also seem OK."
1205 - Added a subset of Fredrik Lundh's ElementTree package. Available
1206 modules are xml.etree.ElementTree, xml.etree.ElementPath, and
1207 xml.etree.ElementInclude, from ElementTree 1.2.6.
1209 - Patch #1162825: Support non-ASCII characters in IDLE window titles.
1211 - Bug #1365984: urllib now opens "data:" URLs again.
1213 - Patch #1314396: prevent deadlock for threading.Thread.join() when an exception
1214 is raised within the method itself on a previous call (e.g., passing in an
1217 - Bug #1340337: change time.strptime() to always return ValueError when there
1218 is an error in the format string.
1220 - Patch #754022: Greatly enhanced webbrowser.py (by Oleg Broytmann).
1222 - Bug #729103: pydoc.py: Fix docother() method to accept additional
1225 - Patch #1300515: xdrlib.py: Fix pack_fstring() to really use null bytes
1228 - Bug #1296004: httplib.py: Limit maximal amount of data read from the
1229 socket to avoid a MemoryError on Windows.
1231 - Patch #1166948: locale.py: Prefer LC_ALL, LC_CTYPE and LANG over LANGUAGE
1232 to get the correct encoding.
1234 - Patch #1166938: locale.py: Parse LANGUAGE as a colon separated list of
1237 - Patch #1268314: Cache lines in StreamReader.readlines for performance.
1239 - Bug #1290505: Fix clearing the regex cache for time.strptime().
1241 - Bug #1167128: Fix size of a symlink in a tarfile to be 0.
1243 - Patch #810023: Fix off-by-one bug in urllib.urlretrieve reporthook
1246 - Bug #1163178: Make IDNA return an empty string when the input is empty.
1248 - Patch #848017: Make Cookie more RFC-compliant. Use CRLF as default output
1249 separator and do not output trailing semicolon.
1251 - Patch #1062060: urllib.urlretrieve() now raises a new exception, named
1252 ContentTooShortException, when the actually downloaded size does not
1253 match the Content-Length header.
1255 - Bug #1121494: distutils.dir_utils.mkpath now accepts Unicode strings.
1257 - Bug #1178484: Return complete lines from codec stream readers
1258 even if there is an exception in later lines, resulting in
1259 correct line numbers for decoding errors in source code.
1261 - Bug #1192315: Disallow negative arguments to clear() in pdb.
1263 - Patch #827386: Support absolute source paths in msvccompiler.py.
1265 - Patch #1105730: Apply the new implementation of commonprefix in posixpath
1266 to ntpath, macpath, os2emxpath and riscospath.
1268 - Fix a problem in Tkinter introduced by SF patch #869468: delete bogus
1269 __hasattr__ and __delattr__ methods on class Tk that were breaking
1272 - Bug #1015140: disambiguated the term "article id" in nntplib docs and
1273 docstrings to either "article number" or "message id".
1275 - Bug #1238170: threading.Thread.__init__ no longer has "kwargs={}" as a
1276 parameter, but uses the usual "kwargs=None".
1278 - textwrap now processes text chunks at O(n) speed instead of O(n**2).
1279 Patch #1209527 (Contributed by Connelly).
1281 - urllib2 has now an attribute 'httpresponses' mapping from HTTP status code
1282 to W3C name (404 -> 'Not Found'). RFE #1216944.
1284 - Bug #1177468: Don't cache the /dev/urandom file descriptor for os.urandom,
1285 as this can cause problems with apps closing all file descriptors.
1287 - Bug #839151: Fix an attempt to access sys.argv in the warnings module;
1288 it can be missing in embedded interpreters
1290 - Bug #1155638: Fix a bug which affected HTTP 0.9 responses in httplib.
1292 - Bug #1100201: Cross-site scripting was possible on BaseHTTPServer via
1295 - Bug #1108948: Cookie.py produced invalid JavaScript code.
1297 - The tokenize module now detects and reports indentation errors.
1300 - The tokenize module has a new untokenize() function to support a full
1301 roundtrip from lexed tokens back to Python source code. In addition,
1302 the generate_tokens() function now accepts a callable argument that
1303 terminates by raising StopIteration.
1305 - Bug #1196315: fix weakref.WeakValueDictionary constructor.
1307 - Bug #1213894: os.path.realpath didn't resolve symlinks that were the first
1308 component of the path.
1310 - Patch #1120353: The xmlrpclib module provides better, more transparent,
1311 support for datetime.{datetime,date,time} objects. With use_datetime set
1312 to True, applications shouldn't have to fiddle with the DateTime wrapper
1315 - distutils.commands.upload was added to support uploading distribution
1318 - distutils.commands.register now encodes the data as UTF-8 before posting
1321 - decimal operator and comparison methods now return NotImplemented
1322 instead of raising a TypeError when interacting with other types. This
1323 allows other classes to implement __radd__ style methods and have them
1326 - Bug #1163325: Decimal infinities failed to hash. Attempting to
1327 hash a NaN raised an InvalidOperation instead of a TypeError.
1329 - Patch #918101: Add tarfile open mode r|* for auto-detection of the
1330 stream compression; add, for symmetry reasons, r:* as a synonym of r.
1332 - Patch #1043890: Add extractall method to tarfile.
1334 - Patch #1075887: Don't require MSVC in distutils if there is nothing
1337 - Patch #1103407: Properly deal with tarfile iterators when untarring
1338 symbolic links on Windows.
1340 - Patch #645894: Use getrusage for computing the time consumption in
1341 profile.py if available.
1343 - Patch #1046831: Use get_python_version where appropriate in sysconfig.py.
1345 - Patch #1117454: Remove code to special-case cookies without values
1348 - Patch #1117339: Add cookielib special name tests.
1350 - Patch #1112812: Make bsddb/__init__.py more friendly for modulefinder.
1352 - Patch #1110248: SYNC_FLUSH the zlib buffer for GZipFile.flush.
1354 - Patch #1107973: Allow to iterate over the lines of a tarfile.ExFileObject.
1356 - Patch #1104111: Alter setup.py --help and --help-commands.
1358 - Patch #1121234: Properly cleanup _exit and tkerror commands.
1360 - Patch #1049151: xdrlib now unpacks booleans as True or False.
1362 - Fixed bug in a NameError bug in cookielib. Patch #1116583.
1364 - Applied a security fix to SimpleXMLRPCserver (PSF-2005-001). This
1365 disables recursive traversal through instance attributes, which can
1366 be exploited in various ways.
1368 - Bug #1222790: in SimpleXMLRPCServer, set the reuse-address and close-on-exec
1369 flags on the HTTP listening socket.
1371 - Bug #792570: SimpleXMLRPCServer had problems if the request grew too large.
1372 Fixed by reading the HTTP body in chunks instead of one big socket.read().
1374 - Patches #893642, #1039083: add allow_none, encoding arguments to constructors of
1375 SimpleXMLRPCServer and CGIXMLRPCRequestHandler.
1377 - Bug #1110478: Revert os.environ.update to do putenv again.
1379 - Bug #1103844: fix distutils.install.dump_dirs() with negated options.
1381 - os.{SEEK_SET, SEEK_CUR, SEEK_END} have been added for convenience.
1383 - Enhancements to the csv module:
1385 + Dialects are now validated by the underlying C code, better
1386 reflecting its capabilities, and improving its compliance with
1388 + Dialect parameter parsing has been re-implemented to improve error
1390 + quotechar=None and quoting=QUOTE_NONE now work the way PEP 305
1392 + the parser now removes the escapechar prefix from escaped characters.
1393 + when quoting=QUOTE_NONNUMERIC, the writer now tests for numeric
1394 types, rather than any object that can be represented as a numeric.
1395 + when quoting=QUOTE_NONNUMERIC, the reader now casts unquoted fields
1397 + reader now allows \r characters to be quoted (previously it only allowed
1399 + writer doublequote handling improved.
1400 + Dialect classes passed to the module are no longer instantiated by
1401 the module before being parsed (the former validation scheme required
1402 this, but the mechanism was unreliable).
1403 + The dialect registry now contains instances of the internal
1404 C-coded dialect type, rather than references to python objects.
1405 + the internal c-coded dialect type is now immutable.
1406 + register_dialect now accepts the same keyword dialect specifications
1407 as the reader and writer, allowing the user to register dialects
1408 without first creating a dialect class.
1409 + a configurable limit to the size of parsed fields has been added -
1410 previously, an unmatched quote character could result in the entire
1411 file being read into the field buffer before an error was reported.
1412 + A new module method csv.field_size_limit() has been added that sets
1413 the parser field size limit (returning the former limit). The initial
1415 + A line_num attribute has been added to the reader object, which tracks
1416 the number of lines read from the source iterator. This is not
1417 the same as the number of records returned, as records can span
1419 + reader and writer objects were not being registered with the cyclic-GC.
1420 This has been fixed.
1422 - _DummyThread objects in the threading module now delete self.__block that is
1423 inherited from _Thread since it uses up a lock allocated by 'thread'. The
1424 lock primitives tend to be limited in number and thus should not be wasted on
1425 a _DummyThread object. Fixes bug #1089632.
1427 - The imghdr module now detects Exif files.
1429 - StringIO.truncate() now correctly adjusts the size attribute.
1432 - locale.py now uses an updated locale alias table (built using
1433 Tools/i18n/makelocalealias.py, a tool to parse the X11 locale
1434 alias file); the encoding lookup was enhanced to use Python's
1435 encoding alias table.
1437 - moved deprecated modules to Lib/lib-old: whrandom, tzparse, statcache.
1439 - the pickle module no longer accepts the deprecated None option in the
1440 args tuple returned by __reduce__().
1442 - optparse now optionally imports gettext. This allows its use in setup.py.
1444 - the pickle module no longer uses the deprecated bin parameter.
1446 - the shelve module no longer uses the deprecated binary parameter.
1448 - the pstats module no longer uses the deprecated ignore() method.
1450 - the filecmp module no longer uses the deprecated use_statcache argument.
1452 - unittest.TestCase.run() and unittest.TestSuite.run() can now be successfully
1453 extended or overridden by subclasses. Formerly, the subclassed method would
1454 be ignored by the rest of the module. (Bug #1078905).
1456 - heapq.nsmallest() and heapq.nlargest() now support key= arguments with
1457 the same meaning as in list.sort().
1459 - Bug #1076985: ``codecs.StreamReader.readline()`` now calls ``read()`` only
1460 once when a size argument is given. This prevents a buffer overflow in the
1461 tokenizer with very long source lines.
1463 - Bug #1083110: ``zlib.decompress.flush()`` would segfault if called
1464 immediately after creating the object, without any intervening
1465 ``.decompress()`` calls.
1467 - The reconvert.quote function can now emit triple-quoted strings. The
1468 reconvert module now has some simple documentation.
1470 - ``UserString.MutableString`` now supports negative indices in
1471 ``__setitem__`` and ``__delitem__``
1473 - Bug #1149508: ``textwrap`` now handles hyphenated numbers (eg. "2004-03-05")
1476 - Partial fixes for SF bugs #1163244 and #1175396: If a chunk read by
1477 ``codecs.StreamReader.readline()`` has a trailing "\r", read one more
1478 character even if the user has passed a size parameter to get a proper
1479 line ending. Remove the special handling of a "\r\n" that has been split
1482 - Bug #1251300: On UCS-4 builds the "unicode-internal" codec will now complain
1483 about illegal code points. The codec now supports PEP 293 style error
1486 - Bug #1235646: ``codecs.StreamRecoder.next()`` now reencodes the data it reads
1487 from the input stream, so that the output is a byte string in the correct
1488 encoding instead of a unicode string.
1490 - Bug #1202493: Fixing SRE parser to handle '{}' as perl does, rather than
1491 considering it exactly like a '*'.
1493 - Bug #1245379: Add "unicode-1-1-utf-7" as an alias for "utf-7" to
1494 ``encodings.aliases``.
1496 - ` uu.encode()`` and ``uu.decode()`` now support unicode filenames.
1498 - Patch #1413711: Certain patterns of differences were making difflib
1499 touch the recursion limit.
1501 - Bug #947906: An object oriented interface has been added to the calendar
1502 module. It's possible to generate HTML calendar now and the module can be
1503 called as a script (e.g. via ``python -mcalendar``). Localized month and
1504 weekday names can be ouput (even if an exotic encoding is used) using
1505 special classes that use unicode.
1510 - Fix test_float, test_long, and test_struct failures on Tru64 with gcc
1511 by using -mieee gcc option.
1513 - Patch #1432345: Make python compile on DragonFly.
1515 - Build support for Win64-AMD64 was added.
1517 - Patch #1428494: Prefer linking against ncursesw over ncurses library.
1519 - Patch #881820: look for openpty and forkpty also in libbsd.
1521 - The sources of zlib are now part of the Python distribution (zlib 1.2.3).
1522 The zlib module is now builtin on Windows.
1524 - Use -xcode=pic32 for CCSHARED on Solaris with SunPro.
1526 - Bug #1189330: configure did not correctly determine the necessary
1527 value of LINKCC if python was built with GCC 4.0.
1529 - Upgrade Windows build to zlib 1.2.3 which eliminates a potential security
1530 vulnerability in zlib 1.2.1 and 1.2.2.
1532 - EXTRA_CFLAGS has been introduced as an environment variable to hold compiler
1533 flags that change binary compatibility. Changes were also made to
1534 distutils.sysconfig to also use the environment variable when used during
1535 compilation of the interpreter and of C extensions through distutils.
1537 - SF patch 1171735: Darwin 8's headers are anal about POSIX compliance,
1538 and linking has changed (prebinding is now deprecated, and libcc_dynamic
1539 no longer exists). This configure patch makes things right.
1541 - Bug #1158607: Build with --disable-unicode again.
1543 - spwdmodule.c is built only if either HAVE_GETSPNAM or HAVE_HAVE_GETSPENT is
1544 defined. Discovered as a result of not being able to build on OS X.
1546 - setup.py now uses the directories specified in LDFLAGS using the -L option
1547 and in CPPFLAGS using the -I option for adding library and include
1548 directories, respectively, for compiling extension modules against. This has
1549 led to the core being compiled using the values in CPPFLAGS. It also removes
1550 the need for the special-casing of both DarwinPorts and Fink for darwin since
1551 the proper directories can be specified in LDFLAGS (``-L/sw/lib`` for Fink,
1552 ``-L/opt/local/lib`` for DarwinPorts) and CPPFLAGS (``-I/sw/include`` for
1553 Fink, ``-I/opt/local/include`` for DarwinPorts).
1555 - Test in configure.in that checks for tzset no longer dependent on tm->tm_zone
1556 to exist in the struct (not required by either ISO C nor the UNIX 2 spec).
1557 Tests for sanity in tzname when HAVE_TZNAME defined were also defined.
1558 Closes bug #1096244. Thanks Gregory Bond.
1563 - ``PyMem_{Del, DEL}`` and ``PyMem_{Free, FREE}`` no longer map to
1564 ``PyObject_{Free, FREE}``. They map to the system ``free()`` now. If memory
1565 is obtained via the ``PyObject_`` family, it must be released via the
1566 ``PyObject_`` family, and likewise for the ``PyMem_`` family. This has
1567 always been officially true, but when Python's small-object allocator was
1568 introduced, an attempt was made to cater to a few extension modules
1569 discovered at the time that obtained memory via ``PyObject_New`` but
1570 released it via ``PyMem_DEL``. It's years later, and if such code still
1571 exists it will fail now (probably with segfaults, but calling wrong
1572 low-level memory management functions can yield many symptoms).
1574 - Added a C API for set and frozenset objects.
1576 - Removed PyRange_New().
1578 - Patch #1313939: PyUnicode_DecodeCharmap() accepts a unicode string as the
1579 mapping argument now. This string is used as a mapping table. Byte values
1580 greater than the length of the string and 0xFFFE are treated as undefined
1587 - In test_os, st_?time is now truncated before comparing it with ST_?TIME.
1589 - Patch #1276356: New resource "urlfetch" is implemented. This enables
1590 even impatient people to run tests that require remote files.
1596 - Bug #1402224: Add warning to dl docs about crashes.
1598 - Bug #1396471: Document that Windows' ftell() can return invalid
1599 values for text files with UNIX-style line endings.
1601 - Bug #1274828: Document os.path.splitunc().
1603 - Bug #1190204: Clarify which directories are searched by site.py.
1605 - Bug #1193849: Clarify os.path.expanduser() documentation.
1607 - Bug #1243192: re.UNICODE and re.LOCALE affect \d, \D, \s and \S.
1609 - Bug #755617: Document the effects of os.chown() on Windows.
1611 - Patch #1180012: The documentation for modulefinder is now in the library reference.
1613 - Patch #1213031: Document that os.chown() accepts argument values of -1.
1615 - Bug #1190563: Document os.waitpid() return value with WNOHANG flag.
1617 - Bug #1175022: Correct the example code for property().
1619 - Document the IterableUserDict class in the UserDict module.
1620 Closes bug #1166582.
1622 - Remove all latent references for "Macintosh" that referred to semantics for
1623 Mac OS 9 and change to reflect the state for OS X.
1624 Closes patch #1095802. Thanks Jack Jansen.
1633 - FreeBSD 7 support is added.
1639 - Created Misc/Vim/vim_syntax.py to auto-generate a python.vim file in that
1640 directory for syntax highlighting in Vim. Vim directory was added and placed
1641 vimrc to it (was previous up a level).
1643 - Added two new files to Tools/scripts: pysource.py, which recursively
1644 finds Python source files, and findnocoding.py, which finds Python
1645 source files that need an encoding declaration.
1646 Patch #784089, credits to Oleg Broytmann.
1648 - Bug #1072853: pindent.py used an uninitialized variable.
1650 - Patch #1177597: Correct Complex.__init__.
1652 - Fixed a display glitch in Pynche, which could cause the right arrow to
1653 wiggle over by a pixel.
1657 **(For information about older versions, consult the HISTORY file.)**