5 (editors: check NEWS.help for information about editing NEWS using ReST.)
7 What's New in Python 2.7 alpha 3?
8 =================================
10 *Release date: XXXX-XX-XX*
15 - Issue #7622: Improve the split(), rsplit(), splitlines() and replace()
16 methods of bytes, bytearray and unicode objects by using a common
17 implementation based on stringlib's fast search. Patch by Florent Xicluna.
19 - Issue #7632: Fix a crash in dtoa.c that occurred in debug builds
20 when parsing certain long numeric strings corresponding to subnormal
21 values. Also fix a number of bugs in dtoa.c that could lead to
22 incorrectly rounded results when converting strings to floats.
24 - Issue #7319, #7770: Silence DeprecationWarning by default when -3 is not
27 - Issue #2335: Backport set literals syntax from Python 3.x.
29 - Issue #2333: Backport set and dict comprehensions syntax from Python 3.x.
31 - Issue #1967: Backport dictionary views from Python 3.x.
36 - Issue #7701: Fix crash in binascii.b2a_uu() in debug mode when given a
37 1-byte argument. Patch by Victor Stinner.
39 - Issue #3299: Fix possible crash in the _sre module when given bad
40 argument values in debug mode. Patch by Victor Stinner.
42 - Issue #7703: Add support for the new buffer API to functions of the
43 binascii module. Backported from py3k by Florent Xicluna, with some
46 - Issue #2846: Add support for gzip.GzipFile reading zero-padded files.
47 Patch by Brian Curtin.
49 - Issue #5827: Make sure that normpath preserves unicode. Initial patch
52 - Issue #5372: Drop the reuse of .o files in Distutils' ccompiler (since
53 Extension extra options may change the output without changing the .c
54 file). Initial patch by Collin Winter.
59 - Issue #7661: Allow ctypes to be built from a non-ASCII directory path.
60 Patch by Florent Xicluna.
63 What's New in Python 2.7 alpha 2?
64 =================================
66 *Release date: 2010-01-09*
71 - The __complex__ method is now looked up on the class of instances to make it
72 consistent with other special methods.
74 - Issue #7462: Implement the stringlib fast search algorithm for the `rfind`,
75 `rindex`, `rsplit` and `rpartition` methods. Patch by Florent Xicluna.
77 - Issue #5080: A number of functions and methods previously produced a
78 DeprecationWarning when passed a float argument where an integer was
79 expected. These functions and methods now raise TypeError instead.
80 The majority of the effects of this change are in the extension
81 modules, but some core functions and methods are affected: notably
82 the 'chr', 'range' and 'xrange' builtins, and many unicode/str
85 - Issue #7604: Deleting an unset slotted attribute did not raise an
88 - Issue #7534: Fix handling of IEEE specials (infinities, nans,
89 negative zero) in ** operator. The behaviour now conforms to that
90 described in C99 Annex F.
92 - Issue #7579: the msvcrt module now has docstrings for all its functions.
94 - Issue #7413: Passing '\0' as the separator to datetime.datetime.isoformat()
95 used to drop the time part of the result.
97 - Issue #1811: improve accuracy and cross-platform consistency for
98 true division of integers: the result of a/b is now correctly
99 rounded for ints a and b (at least on IEEE 754 platforms), and in
100 particular does not depend on the internal representation of a long.
102 - Issue #6108: unicode(exception) and str(exception) should return the same
103 message when only __str__ (and not __unicode__) is overridden in the subclass.
105 - Issue #6834: replace the implementation for the 'python' and 'pythonw'
108 These executables now work properly with the arch(1) command:
109 ``arch -ppc python`` will start a universal binary version of python
110 in PPC mode (unlike previous releases).
112 - Issue #1680159: unicode coercion during an 'in' operation no longer masks
113 the underlying error when the coercion fails for the left hand operand.
115 - Issue #7491: Metaclass's __cmp__ method was ignored.
117 - Issue #7466: segmentation fault when the garbage collector is called
118 in the middle of populating a tuple. Patch by Florent Xicluna.
124 - Issue #7617: Make sure distutils.unixccompiler.UnixCCompiler recognizes
125 gcc when it has a fully qualified configuration prefix. Initial patch
128 - Issue #7092: Remove py3k warning when importing cPickle. 2to3 handles
129 renaming of `cPickle` to `pickle`. The warning was annoying since there's
130 no alternative to cPickle if you care about performance. Patch by Florent
133 - Issue #7455: Fix possible crash in cPickle on invalid input. Patch by
136 - Issue #7092: Fix the DeprecationWarnings emitted by the standard library
137 when using the -3 flag. Patch by Florent Xicluna.
139 - Issue #7471: Improve the performance of GzipFile's buffering mechanism,
140 and make it implement the `io.BufferedIOBase` ABC to allow for further
141 speedups by wrapping it in an `io.BufferedReader`. Patch by Nir Aides.
143 - Issue #3972: httplib.HTTPConnection now accepts an optional source_address
144 parameter to allow specifying where your connections come from.
146 - socket.create_connection now accepts an optional source_address parameter.
148 - Issue #5511: now zipfile.ZipFile can be used as a context manager.
149 Initial patch by Brian Curtin.
151 - Distutils now correctly identifies the build architecture as "x86_64"
152 when building on OSX 10.6 without "-arch" flags.
154 - Issue #7556: Distutils' msvc9compiler now opens the MSVC Manifest
157 - Issue #7552: Removed line feed in the base64 Authorization header in
158 the Distutils upload command to avoid an error when PyPI reads it.
159 This occurs on long passwords. Initial patch by JP St. Pierre.
161 - Issue #7231: urllib2 cannot handle https with proxy requiring auth.
162 Patch by Tatsuhiro Tsujikawa.
164 - Issue #7349: Make methods of file objects in the io module accept None as an
165 argument where file-like objects (ie StringIO and BytesIO) accept them to mean
166 the same as passing no argument.
168 - Issue #7348: StringIO.StringIO.readline(-1) now acts as if it got no argument
169 like other file objects.
171 - Issue #7357: tarfile no longer suppresses fatal extraction errors by
174 - Issue #7470: logging: fix bug in Unicode encoding fallback.
176 - Issue #5949: fixed IMAP4_SSL hang when the IMAP server response is
177 missing proper end-of-line termination.
179 - Issue #7457: added a read_pkg_file method to
180 distutils.dist.DistributionMetadata.
182 - Issue #3745: Undo the 2.7a1 change to have hashlib to reject unicode and
183 non buffer-api supporting objects as input. That behavior is for 3.x only.
188 - Issue #5080: The argument parsing functions PyArg_ParseTuple,
189 PyArg_ParseTupleAndKeywords, PyArg_VaParse,
190 PyArg_VaParseTupleAndKeywords and PyArg_Parse no longer accept float
191 arguments for integer format codes (other than 'L'): previously an
192 attempt to pass a float resulted in a DeprecationWarning; now it
193 gives a TypeError. For the 'L' format code (which previously had no
194 warning) there is now a DeprecationWarning.
196 - Issue #7033: function ``PyErr_NewExceptionWithDoc()`` added.
201 - Issue #6491: Allow --with-dbmliborder to specify that no dbms will be built.
203 - Issue #6943: Use pkg-config to find the libffi headers when the
204 --with-system-ffi flag is used.
206 - Issue #7609: Add a --with-system-expat option that causes the system's expat
207 library to be used for the pyexpat module instead of the one included with
210 - Issue #7589: Only build the nis module when the correct header files are
213 - Switch to OpenSSL 0.9.8l and sqlite 3.6.21 on Windows.
215 - Issue #7541: when using ``python-config`` with a framework install the compiler might
216 use the wrong library.
221 - Issue #7376: instead of running a self-test (which was failing) when called
222 with no arguments, doctest.py now gives a usage message.
224 - Issue #7396: fix regrtest -s, which was broken by the -j enhancement.
226 - Issue #7498: test_multiprocessing now uses test_support.find_unused_port
227 instead of a hardcoded port number in test_rapid_restart.
231 What's New in Python 2.7 alpha 1
232 ================================
234 *Release date: 2009-12-05*
239 - Issue #7419: setlocale() could crash the interpreter on Windows when called
242 - Issue #3382: 'F' formatting for float and complex now convert the
243 result to upper case. This only affects 'inf' and 'nan', since 'f'
244 no longer converts to 'g' for large values.
246 - Remove switch from "%f" formatting to "%g" formatting for floats
247 larger than 1e50 in absolute value.
249 - Remove restrictions on precision when formatting floats. E.g.,
250 "%.120g" % 1e-100 used to raise OverflowError, but now gives the
251 requested 120 significant digits instead.
253 - Add Py3k warnings for parameter names in parenthesis.
255 - Issue #7362: Give a proper error message for def f((x)=3): pass.
257 - Issue #7085: Fix crash when importing some extensions in a thread
260 - Issue #7117: repr(x) for a float x returns a result based on the
261 shortest decimal string that's guaranteed to round back to x under
262 correct rounding (with round-half-to-even rounding mode).
263 Previously it gave a string based on rounding x to 17 decimal digits.
264 repr(x) for a complex number behaves similarly. On platforms where
265 the correctly-rounded strtod and dtoa code is not supported (see below),
268 - Issue #7117: On almost all platforms: float-to-string and
269 string-to-float conversions within Python are now correctly rounded.
270 Places these conversions occur include: str for floats and complex
271 numbers; the float and complex constructors; old-style and new-style
272 numeric formatting; serialization and deserialization of floats and
273 complex numbers using marshal, pickle and json; parsing of float and
274 imaginary literals in Python code; Decimal-to-float conversion.
276 The conversions use a Python-adapted version of David Gay's
277 well-known dtoa.c, providing correctly-rounded strtod and dtoa C
278 functions. This code is supported on Windows, and on Unix-like
279 platforms using gcc, icc or suncc as the C compiler. There may be a
280 small number of platforms on which correct operation of this code
281 cannot be guaranteed, so the code is not used: notably, this applies
282 to platforms where the C double format is not IEEE 754 binary64, and
283 to platforms on x86 hardware where the x87 FPU is set to 64-bit
284 precision and Python's configure script is unable to determine how
285 to change the FPU precision. On these platforms conversions use the
286 platform strtod and dtoa, as before.
288 - Issue #7117: Backport round implementation from Python 3.x. round
289 now uses the correctly-rounded string <-> float conversions
290 described above (when available), and so produces correctly rounded
291 results that will display nicely under the float repr. There are
292 two related small changes: (1) round now accepts any class with an
293 __index__ method for its second argument (but no longer accepts
294 floats for the second argument), and (2) an excessively large second
295 integer argument (e.g., round(1.234, 10**100)) no longer raises an
298 - Issue #1757126: Fix the cyrillic-asian alias for the ptcp154 encoding.
300 - Fix several issues with compile(). The input can now contain Windows and Mac
301 newlines and is no longer required to end in a newline.
303 - Remove length limitation when constructing a complex number from a
306 - Issue #7244: itertools.izip_longest() no longer ignores exceptions
307 raised during the formation of an output tuple.
309 - Issue #1087418: Boost performance of bitwise operations for longs.
311 - Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which
312 fixes the problem of some exceptions being thrown at shutdown when the
313 interpreter is killed. Patch by Adam Olsen.
315 - Issue #7168: Document PyFloat_AsString and PyFloat_AsReprString, and
316 note that they are unsafe and deprecated.
318 - Issue #7120: logging: Removed import of multiprocessing which is causing
321 - Issue #7140: The __dict__ of a module should not be cleared unless the module
322 is the only object holding a reference to it.
324 - Issue #1754094: Improve the stack depth calculation in the compiler.
325 There should be no other effect than a small decrease in memory use.
326 Patch by Christopher Tur Lesniewski-Laas.
328 - Issue #7084: Fix a (very unlikely) crash when printing a list from one
329 thread, and mutating it from another one. Patch by Scott Dial.
331 - Issue #1571184: The Unicode database contains properties for more characters.
332 The tables for code points representing numeric values, white spaces or line
333 breaks are now generated from the official Unicode Character Database files,
334 and include information from the Unihan.txt file.
336 - Issue #7050: Fix a SystemError when trying to use unpacking and augmented
339 - Issue #5329: Fix os.popen* regression from 2.5 with commands as a
340 sequence running through the shell. Patch by Jean-Paul Calderone
343 - Issue #7019: Raise ValueError when unmarshalling bad long data, instead
344 of producing internally inconsistent Python longs.
346 - Issue #6990: Fix threading.local subclasses leaving old state around
347 after a reference cycle GC which could be recycled by new locals.
349 - Issue #6300: unicode.encode, unicode.decode, str.decode, and str.encode now
350 take keyword arguments.
352 - Issue #6922: Fix an infinite loop when trying to decode an invalid
353 UTF-32 stream with a non-raising error handler like "replace" or "ignore".
355 - Issue #6713: Improve performance of base 10 int -> string and
356 long -> string conversions.
358 - Issue #1590864: Fix potential deadlock when mixing threads and fork().
360 - Issue #6844: Do not emit DeprecationWarnings when accessing a "message"
361 attribute on exceptions that was set explicitly.
363 - Issue #6846: Fix bug where bytearray.pop() returns negative integers.
365 - classmethod no longer checks if its argument is callable.
367 - Issue #6750: A text file opened with io.open() could duplicate its output
368 when writing from multiple threads at the same time.
370 - Issue #6704: Improve the col_offset in AST for "for" statements with
371 a target of tuple unpacking.
373 - Issue #6707: dir() on an uninitialized module caused a crash.
375 - Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
377 - Issue #6573: set.union() stopped processing inputs if an instance of self
378 occurred in the argument chain.
380 - Issue #1616979: Added the cp720 (Arabic DOS) encoding.
382 - Issue #6070: On posix platforms import no longer copies the execute bit
383 from the .py file to the .pyc file if it is set. Patch by Marco N.
385 - Issue #4618: When unicode arguments are passed to print(), the default
386 separator and end should be unicode also.
388 - Issue #6119: Fixed a incorrect Py3k warning about order comparisons of builtin
389 functions and methods.
391 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
392 This fixes a build failure on HP-UX: int32_t and uint32_t are
393 defined in inttypes.h instead of stdint.h on that platform.
395 - Issue #4856: Remove checks for win NT.
397 - Issue #2016: Fixed a crash in a corner case where the dictionary of keyword
398 arguments could be modified during the function call setup.
400 - Removed the ipaddr module.
402 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
403 because it wasn't recognized as a sequence).
405 - Issue #6289: Encoding errors from compile() were being masked.
407 - When no module is given in a relative import, the module field of the
408 ImportFrom AST node is now None instead of an empty string.
410 - Assignment to None using import statements now raises a SyntaxError.
412 - Issue #4547: When debugging a very large function, it was not always
413 possible to update the lineno attribute of the current frame.
415 - Issue #5330: C functions called with keyword arguments were not reported by
416 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
418 - Issue #5982: staticmethod and classmethod now expose the wrapped
419 function with __func__.
421 - Added support for multiple context managers in the same with-statement.
422 Deprecated contextlib.nested() which is no longer needed.
424 - Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with
425 statement and correctly lookup the __enter__ and __exit__ special methods.
427 - Issue #5829: complex("1e500") no longer raises OverflowError. This
428 makes it consistent with float("1e500") and interpretation of real
429 and imaginary literals.
431 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
433 - __instancecheck__ and __subclasscheck__ are now completely ignored on classic
434 classes and instances.
436 - Issue #5994: the marshal module now has docstrings.
438 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
439 (1) inf and nan strings with trailing whitespace were incorrectly
440 rejected; (2) parsing of strings representing infinities and nans
441 was locale aware; and (3) the interpretation of fromhex('-nan')
442 didn't match that of float('-nan').
444 - Issue #5920: For float.__format__, change the behavior with the
445 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
446 to be like 'g' but with at least one decimal point and with a
447 default precision of 12. Previously, the behavior the same but with
448 a default precision of 6. This more closely matches str(), and
449 reduces surprises when adding alignment flags to the empty
450 presentation type. This also affects the new complex.__format__ in
453 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
454 shadowed by classtype's, even if it was None. property now
455 inserts the __doc__ into the subclass instance __dict__.
457 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
458 sequences. Patch by Nick Barnes and Victor Stinner.
460 - Issue #1588: Add complex.__format__. For example,
461 format(complex(1, 2./3), '.5') now produces a sensible result.
463 - Issue #5864: Fix empty format code formatting for floats so that it
464 never gives more than the requested number of significant digits.
466 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
467 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
469 - Issue #4971: Fix titlecase for characters that are their own
470 titlecase, but not their own uppercase.
472 - Issue #5835: Deprecate PyOS_ascii_formatd and replace it with
473 _PyOS_double_to_string or PyOS_double_to_string.
475 - Issue #5283: Setting __class__ in __del__ caused a segfault.
477 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
478 z involves nans, infs or negative zeros.
480 - Implement PEP 378, Format Specifier for Thousands Separator, for
481 floats, ints, and longs.
483 - Issue #5515: 'n' formatting for ints, longs, and floats handles
484 leading zero formatting poorly.
486 - Issue #5772: For float.__format__, don't add a trailing ".0" if
487 we're using no type code and we have an exponent.
489 - Issue #3166: Make long -> float (and int -> float) conversions
492 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
495 - Issue #1869: fix a couple of minor round() issues. round(5e15+1)
496 was giving 5e15+2; round(-0.0) was losing the sign of the zero.
498 - Issue #5759: float() didn't call __float__ on str subclasses.
500 - Issue #5704: the "-3" command-line option now implies "-t".
502 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
503 its clarity and its speed.
505 - Issue #2396: the memoryview object was backported from Python 3.1.
507 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
508 when hitting the recursion limit under certain circumstances.
510 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
512 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
513 the end sys.path, for compatibility with the system install of Python.
515 - Issue #4688: Add a heuristic so that tuples and dicts containing only
516 untrackable objects are not tracked by the garbage collector. This can
517 reduce the size of collections and therefore the garbage collection overhead
518 on long-running programs, depending on their particular use of datatypes.
520 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
521 improve its performance. Long divisions and remainder operations
522 are now between 50% and 150% faster.
524 - Issue #4258: Make it possible to use base 2**30 instead of base
525 2**15 for the internal representation of integers, for performance
526 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
527 --enable-big-digits option to configure, which overrides the
528 default. Add sys.long_info structseq to provide information about
531 - Issue #4034: Fix weird attribute error messages of the traceback object. (As a
532 result traceback.__members__ no longer exists.)
534 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
535 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
536 and sizeof(Py_UNICODE) == 2.
538 - Issue #5237: Allow auto-numbered fields in str.format(). For
539 example: '{} {}'.format(1, 2) == '1 2'.
541 - Issue #3652: Make the 'line' argument for warnings.showwarning() a
542 requirement. Means the DeprecationWarning from Python 2.6 can go away.
544 - Issue #5247: Improve error message when unknown format codes are
545 used when using str.format() with str, unicode, long, int, and
548 - Running Python with the -3 option now also warns about classic division
551 - Issue #5260: Long integers now consume less memory: average
552 saving is 2 bytes per long on a 32-bit system and 6 bytes per long
555 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
556 rotating the object pointer by 4 bits to the right.
558 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
559 it now forces its argument to double before testing for infinity.
561 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
563 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
564 were suppressing all exceptions. These include list(), filter(), map(),
565 zip(), and bytearray().
567 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
570 - Issue #4991: Passing invalid file descriptors to io.FileIO now raises an
573 - Issue #4807: Port the _winreg module to Windows CE.
575 - Issue #4935: The overflow checking code in the expandtabs() method common
576 to str, bytes and bytearray could be optimized away by the compiler, letting
577 the interpreter segfault instead of raising an error.
579 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
582 - Issue #4893: Use NT threading on CE.
584 - Issue #4915: Port sysmodule to Windows CE.
586 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
587 collecting the oldest generation) so that allocating lots of objects without
588 destroying them does not show quadratic performance. Based on a proposal by
590 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
592 - Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
594 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
595 an existing .py counterpart, override the co_filename attributes of all
596 code objects if the original filename is obsolete (which can happen if the
597 file has been renamed, moved, or if it is accessed through different paths).
598 Patch by Ziga Seilnacht and Jean-Paul Calderone.
600 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
602 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
603 file with `str' filename on Windows.
605 - Issue #3680: Reference cycles created through a dict, set or deque iterator
606 did not get collected.
608 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
609 where the tp_hash and tp_dict slots are both NULL.
611 - Issue #4764: With io.open, IOError.filename is set when trying to open a
612 directory on POSIX systems.
614 - Issue #4764: IOError.filename is set when trying to open a directory on POSIX
617 - Issue #4759: None is now allowed as the first argument of
618 bytearray.translate(). It was always allowed for bytes.translate().
620 - Added test case to ensure attempts to read from a file opened for writing
623 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
624 print elapsed times, not only when some objects are uncollectable /
625 unreachable. Original patch by Neil Schemenauer.
627 - Issue #3439: Add a bit_length method to int and long.
629 - Issue #2183: Simplify and optimize bytecode for list comprehensions.
630 Original patch by Neal Norwitz.
632 - Issue #4597: Fixed exception handling when the __exit__ function of a
633 context manager returns a value that cannot be converted to a bool.
635 - Issue #4597: Fixed several opcodes that weren't always propagating
638 - Issue #4445: Replace "sizeof(PyStringObject)" with
639 "offsetof(PyStringObject, ob_sval) + 1" when allocating memory for
640 str instances. On a typical machine this saves 3 bytes of memory
641 (on average) per string allocation.
643 - Issue #3996: On Windows, the PyOS_CheckStack function would cause the
644 interpreter to abort ("Fatal Python error: Could not reset the stack!")
645 instead of throwing a MemoryError.
647 - Issue #3689: The list reversed iterator now supports __length_hint__
648 instead of __len__. Behavior now matches other reversed iterators.
650 - Issue #4367: Python would segfault during compiling when the unicodedata
651 module couldn't be imported and \N escapes were present.
653 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
654 method on file objects with closefd=False. The file descriptor is still
655 kept open but the file object behaves like a closed file. The ``FileIO``
656 object also got a new readonly attribute ``closefd``.
658 - Issue #4348: Some bytearray methods returned that didn't cause any change to
659 the bytearray, returned the same bytearray instead of a copy.
661 - Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
663 - Issue #4230: If ``__getattr__`` is a descriptor, it now functions correctly.
665 - Issue #4048: The parser module now correctly validates relative imports.
667 - Issue #4225: ``from __future__ import unicode_literals`` didn't work in an
670 - Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
671 method does not return iterators for the 4th and 5th items.
673 - Issue #4209: Enabling unicode_literals and the print_function in the same
674 __future__ import didn't work.
676 - Using ``nonlocal`` as a variable name will now raise a Py3k SyntaxWarning
677 because it is a reserved word in 3.x.
679 - On windows, os.chdir given unicode was not working if GetCurrentDirectoryW
680 returned a path longer than MAX_PATH. (But It's doubtful this code path is
681 really executed because I cannot move to such directory on win2k)
683 - Issue #4069: When set.remove(element) is used with a set element, the element
684 is temporarily replaced with an equivalent frozenset. But the eventual
685 KeyError would always report the empty frozenset([]) as the missing key. Now
686 it correctly refers to the initial element.
688 - Issue #4509: Various issues surrounding resize of bytearray objects to
689 which there are buffer exports.
691 - Issue #4748: Lambda generators no longer return a value.
693 - Issue #3582: Use native TLS functions on Windows
695 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
697 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
700 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
701 to avoid compiler warnings.
703 - Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam()
704 returned them on 64bit platforms.
706 - Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call
707 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
708 step. This avoids problems with counting UTF-8 bytes that ignores the effect
709 of using the replace error handler in PyUnicode_DecodeUTF8().
711 - Issue #3739: The unicode-internal encoder now reports the number of characters
712 consumed like any other encoder (instead of the number of bytes).
714 - Issue #2422: When compiled with the ``--with-valgrind`` option, the
715 pymalloc allocator will be automatically disabled when running under
716 Valgrind. This gives improved memory leak detection when running
717 under Valgrind, while taking advantage of pymalloc at other times.
722 - Add a reverse() method to collections.deque().
724 - Fix variations of extending deques: d.extend(d) d.extendleft(d) d+=d
726 - Issue #6986: Fix crash in the JSON C accelerator when called with the
727 wrong parameter types. Patch by Victor Stinner.
729 - logging: Added optional `secure` parameter to SMTPHandler, to enable use of
730 TLS with authentication credentials.
732 - Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is
733 generated in Distutils. Patch by Stephen Emslie.
735 - Issue #4120: Drop reference to CRT from manifest when building extensions with
738 - Issue #7333: The `posix` module gains an `initgroups()` function providing
739 access to the initgroups(3) C library call on Unix systems which implement
740 it. Patch by Jean-Paul Calderone.
742 - Issue #7408: Fixed distutils.tests.sdist so it doesn't check for group
743 ownership when the group is not forced, because the group may be different
744 from the user's group and inherit from its container when the test is run.
746 - Issue #1515: Enable use of deepcopy() with instance methods. Patch by
749 - Issue #7403: logging: Fixed possible race condition in lock creation.
751 - Issue #6845: Add restart support for binary upload in ftplib. The
752 `storbinary()` method of FTP and FTP_TLS objects gains an optional `rest`
753 argument. Patch by Pablo Mouzo.
755 - Issue #5788: `datetime.timedelta` objects get a new `total_seconds()`
756 method returning the total number of seconds in the duration. Patch by
759 - Issue #6615: logging: Used weakrefs in internal handler list.
761 - Issue #1488943: difflib.Differ() doesn't always add hints for tab characters
763 - Issue #6123: tarfile now opens empty archives correctly and consistently
764 raises ReadError on empty files.
766 - Issue #7354: distutils.tests.test_msvc9compiler - dragfullwindows can
769 - Issue #5037: Proxy the __unicode__ special method instead to __unicode__
772 - Issue #7341: Close the internal file object in the TarFile constructor in
775 - Issue #7293: distutils.test_msvc9compiler is fixed to work on any fresh
776 Windows box. Help provided by David Bolen.
778 - Issue #7328: pydoc no longer corrupts sys.path when run with the '-m' switch
780 - Issue #2054: ftplib now provides an FTP_TLS class to do secure FTP using
781 TLS or SSL. Patch by Giampaolo Rodola'.
783 - Issue #4969: The mimetypes module now reads the MIME database from
784 the registry under Windows. Patch by Gabriel Genellina.
786 - Issue #6816: runpy now provides a run_path function that allows Python code
787 to execute file paths that refer to source or compiled Python files as well
788 as zipfiles, directories and other valid sys.path entries that contain a
789 __main__.py file. This allows applications that run other Python scripts to
790 support the same flexibility as the CPython command line itself.
792 - Issue #7318: multiprocessing now uses a timeout when it fails to establish
793 a connection with another process, rather than looping endlessly. The
794 default timeout is 20 seconds, which should be amply sufficient for
797 - Issue #7197: Allow unittest.TextTestRunner objects to be pickled and
798 unpickled. This fixes crashes under Windows when trying to run
799 test_multiprocessing in verbose mode.
801 - Issue #7282: Fix a memory leak when an RLock was used in a thread other
802 than those started through `threading.Thread` (for example, using
803 `thread.start_new_thread()`.
805 - Issue #7264: Fix a possible deadlock when deallocating thread-local objects
806 which are part of a reference cycle.
808 - Issue #7211: Allow 64-bit values for the `ident` and `data` fields of kevent
809 objects on 64-bit systems. Patch by Michael Broghton.
811 - Issue #6896: mailbox.Maildir now invalidates its internal cache each time
812 a modification is done through it. This fixes inconsistencies and test
813 failures on systems with slightly bogus mtime behaviour.
815 - Issue #7246 & Issue #7208: getpass now properly flushes input before
816 reading from stdin so that existing input does not confuse it and
817 lead to incorrect entry or an IOError. It also properly flushes it
818 afterwards to avoid the terminal echoing the input afterwards on
819 OSes such as Solaris.
821 - Issue #7233: Fix a number of two-argument Decimal methods to make
822 sure that they accept an int or long as the second argument. Also
823 fix buggy handling of large arguments (those with coefficient longer
824 than the current precision) in shift and rotate.
826 - Issue #4750: Store the basename of the original filename in the gzip FNAME
827 header as required by RFC 1952.
829 - Issue #1180: Added a new global option to ignore ~/.pydistutils.cfg in
832 - Issue #7218: Fix test_site for win32, the directory comparison was done with
835 - Issue #7205: Fix a possible deadlock when using a BZ2File object from
836 several threads at once.
838 - Issue #7071: byte-compilation in Distutils is now done with respect to
839 sys.dont_write_bytecode.
841 - Issue #7066: archive_util.make_archive now restores the cwd if an error is
842 raised. Initial patch by Ezio Melotti.
844 - Issue #6218: io.StringIO and io.BytesIO instances are now picklable with
847 - Issue #7077: logging: SysLogHandler now treats Unicode as per RFC 5424.
849 - Issue #7099: Decimal.is_normal now returns True for numbers with exponent
852 - Issue #5833: Fix extra space character in readline completion with the
853 GNU readline library version 6.0.
855 - Issue #7133: SSL objects now support the new buffer API.
857 - Issue #7149: urllib fails on OSX in the proxy detection code
859 - Issue #7069: Make inspect.isabstract() return a boolean.
861 - Add support to the `ihooks` module for relative imports.
863 - Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment
865 - Issue #7086: Added TCP support to SysLogHandler, and tidied up some
866 anachronisms in the code which were a relic of 1.5.2 compatibility.
868 - Issue #7082: When falling back to the MIME 'name' parameter, the
869 correct place to look for it is the Content-Type header.
871 - Issue #7048: Force Decimal.logb to round its result when that result
872 is too large to fit in the current precision.
874 - Issue #6516: Added owner/group support when creating tar archives in
877 - Issue #7031: Add TestCase.assert(Not)IsInstance() methods.
879 - Issue #6790: Make it possible again to pass an `array.array` to
880 `httplib.HTTPConnection.send`. Patch by Kirk McDonald.
882 - Issue #6236, #6348: Fix various failures in the `io` module under AIX
883 and other platforms, when using a non-gcc compiler. Patch by egreen.
885 - Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils.
887 - Issue #6851: Fix urllib.urlopen crash on secondairy threads on OSX 10.6
889 - Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...)
890 does now always result in NULL.
892 - Issue #5042: ctypes Structure sub-subclass does now initialize
893 correctly with base class positional arguments.
895 - Issue #6938: Fix a TypeError in string formatting of a multiprocessing
898 - Issue #6635: Fix profiler printing usage message.
900 - Issue #6856: Add a filter keyword argument to TarFile.add().
902 - Issue #6163: Fixed HP-UX runtime library dir options in
903 distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and
904 Michael Haubenwallner.
906 - Issue #6857: Default format() alignment should be '>' for Decimal
909 - Issue #6795: int(Decimal('nan')) now raises ValueError instead of
910 returning NaN or raising InvalidContext. Also, fix infinite recursion
911 in long(Decimal('nan')).
913 - Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
914 with no type specifier.
916 - Issue #4937: plat-mac/bundlebuilder revers to non-existing version.plist
918 - Issue #6838: Use a list to accumulate the value instead of
919 repeatedly concatenating strings in httplib's
920 HTTPResponse._read_chunked providing a significant speed increase
921 when downloading large files servend with a Transfer-Encoding of 'chunked'.
923 - Issue #5275: In Cookie's Cookie.load(), properly handle non-string arguments
926 - Issue #2666: Handle BROWSER environment variable properly for unknown browser
927 names in the webbrowser module.
929 - Issue #6054: Do not normalize stored pathnames in tarfile.
931 - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
932 payloads are now ordered by integer value rather than lexicographically.
934 - Issue #6693: New functions in site.py to get user/global site packages paths.
936 - The thread.lock type now supports weak references.
938 - Issue #1356969: Add missing info methods in Tix.HList.
940 - Issue #1522587: New constants and methods for the Tix.Grid widget.
942 - Issue #1250469: Fix the return value of Tix.PanedWindow.panes.
944 - Issue #1119673: Do not override Tkinter.Text methods when creating a
947 - Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
949 - Issue #1135: Add the XView and YView mix-ins to avoid duplicating
950 the xview* and yview* methods.
952 - Issue #6629: Fix a data corruption issue in the new `io` package, which could
953 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
954 "wb+" mode) after having buffered a certain amount of data for reading. This
955 bug was not present in the pure Python implementation.
957 - Issue #4660: If a multiprocessing.JoinableQueue.put() was preempted, it was
958 possible to get a spurious 'task_done() called too many times' error.
960 - Issue #1628205: Socket file objects returned by socket.socket.makefile() now
961 properly handles EINTR within the read, readline, write & flush methods.
962 The socket.sendall() method now properly handles interrupted system calls.
964 - Issue #6595: The Decimal constructor now allows arbitrary Unicode
965 decimal digits in input, as recommended by the standard. Previously
966 it was restricted to accepting [0-9].
968 - Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
969 opening an empty or very small file.
971 - Issue #6553: Fixed a crash in cPickle.load(), when given a file-like object
972 containing incomplete data.
974 - Issue #6545: Removed assert statements in distutils.Extension, so the
975 behavior is similar when used with -O.
977 - unittest has been split up into a package. All old names should still work.
979 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
980 know how to handle a comparison without loss of precision. Also add
981 correct handling of infinities and nans for comparisons with float.
983 - Issue #6415: Fixed warnings.warn segfault on bad formatted string.
985 - Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
986 uses the same refactored function to get gcc/ld/dllwrap versions numbers.
987 It's `distutils.util.get_compiler_versions`. Added deprecation warnings
988 for the obsolete get_versions() functions.
990 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
992 - Issue #6314: logging: Extra checks on the "level" argument in more places.
994 - Issue #2622: Fixed an ImportError when importing email.messsage from a
995 standalone application built with py2exe or py2app.
997 - Issue #6455: Fixed test_build_ext under win32.
999 - Issue #6377: Enabled the compiler option, and deprecate its usage as an
1002 - Issue #6413: Fixed the log level in distutils.dist for announce.
1004 - Issue #3392: The subprocess communicate() method no longer fails in select()
1005 when file descriptors are large; communicate() now uses poll() when possible.
1007 - Issue #6403: Fixed package path usage in build_ext.
1009 - Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
1010 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
1013 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
1014 extension in a subdirectory if the extension name had dots.
1016 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
1018 - Issue #5230: pydoc would report no documentation found if a module generated
1019 a 'not found' import error when loaded; it now reports the import errors.
1020 Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
1022 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
1025 - Issue #6164: Added an AIX specific linker argument in Distutils
1026 unixcompiler. Original patch by Sridhar Ratnakumar.
1028 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
1030 - Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
1032 - Issue #6287: Added the license field in Distutils documentation.
1034 - Issue #6286: Now Distutils upload command is based on urllib2 instead of
1035 httplib, allowing the usage of http_proxy.
1037 - Issue #6271: mmap tried to close invalid file handle (-1) when annonymous.
1040 - Issue #6215: All bug fixes and enhancements from the Python 3.1 io library
1041 (including the fast C implementation) have been backported to the standard
1044 - Issue #6258: Support AMD64 in bdist_msi.
1046 - Issue #6252: Fixed bug in next rollover time computation in
1047 TimedRotatingFileHandler.
1049 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
1051 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
1052 in Makefiles. This prevents compile errors when using syntax like:
1053 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
1055 - Issue #5767: Removed sgmlop support from xmlrpclib.
1057 - Issue #6131: test_modulefinder leaked when run after test_distutils.
1058 Patch by Hirokazu Yamamoto.
1060 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
1062 - Issue #5150: IDLE's format menu now has an option to strip trailing
1065 - Issue #6121: pydoc now ignores leading and trailing spaces in the
1066 argument to the 'help' function.
1068 - In unittest, using a skipping decorator on a class is now equivalent to
1069 skipping every test on the class. The ClassTestSuite class has been removed.
1071 - Issue #6050: Don't fail extracting a directory from a zipfile if
1072 the directory already exists.
1074 - Issue #5311: bdist_msi can now build packages that do not depend on a
1075 specific Python version.
1077 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
1078 than an int, which makes some operations possible under 64-bit Linux (e.g.
1079 DN_MULTISHOT with F_NOTIFY).
1081 - Issue #1424152: Fix for httplib, urllib2 to support SSL while working through
1082 proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
1084 - Issue #1983: Fix functions taking or returning a process identifier to use
1085 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
1086 a process identifier type wider than the standard C integer type.
1088 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
1089 Patch by Farhan Ahmad, test by Marcin Bachry.
1091 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
1092 and tests on pywin32 by Tim Golden.
1094 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
1096 - Issue #6046: Fixed the library extension when distutils build_ext is used
1097 inplace. Initial patch by Roumen Petrov.
1099 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
1102 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
1105 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
1107 - Issue #5918: Fix a crash in the parser module.
1109 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
1111 - Issue #6022: a test file was created in the current working directory by
1112 test_get_outputs in Distutils.
1114 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
1115 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
1117 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
1118 inplace option. Initial patch by kxroberto.
1120 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
1121 for old-style extensions.
1123 - Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when
1124 trying to print a traceback.
1126 - Issue #5976: Fixed Distutils test_check_environ.
1128 - Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU
1129 ld is used. Original patch by Floris Bruynooghe.
1131 - Issue #5941: Distutils build_clib command was not working anymore because
1132 of an incomplete costumization of the archiver command. Added ARFLAGS in the
1133 Makefile besides AR and make Distutils use it. Original patch by David
1136 - Issue 5955: aifc's close method did not close the file it wrapped,
1137 now it does. This also means getfp method now returns the real fp.
1139 - Issue #4875: On win32, ctypes.util.find_library does no longer
1142 - Issue #5142: Add the ability to skip modules while stepping to pdb.
1144 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
1145 looking for files given by a relative filename.
1147 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
1148 extracting a file to the root directory.
1150 - Issue #5913: os.listdir() should fail for empty path on windows.
1152 - Issue #5084: unpickling now interns the attribute names of pickled objects,
1153 saving memory and avoiding growth in size of subsequent pickles. Proposal
1154 and original patch by Jake McGuire.
1156 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
1157 error when a named pipe is encountered, rather than blocking infinitely.
1159 - Issue #3959: The ipaddr module has been added to the standard library.
1160 Contributed by Google.
1162 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
1164 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
1167 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
1169 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
1170 string is already in normalized form, by performing a quick check beforehand.
1171 Original patch by Rauli Ruohonen.
1173 - Issue #5853: calling a function of the mimetypes module from several threads
1174 at once could hit the recursion limit if the mimetypes database hadn't been
1177 - Issue #5854: Updated __all__ to include some missing names and remove some
1178 names which should not be exported.
1180 - Issue #5810: Fixed Distutils test_build_scripts so it uses
1181 sysconfig.get_config_vars.
1183 - Issue #4951: Fixed failure in test_httpservers.
1185 - Issue #3102: All global symbols that the _ctypes extension defines
1186 are now prefixed with 'Py' or '_ctypes'.
1188 - Issue #5041: ctypes does now allow pickling wide character.
1190 - Issue #5812: For the two-argument form of the Fraction constructor,
1191 Fraction(m, n), m and n are permitted to be arbitrary Rational
1194 - Issue #5812: Fraction('1e6') is valid: more generally, any string
1195 that's valid for float() is now valid for Fraction(), with the
1196 exception of strings representing NaNs and infinities.
1198 - Issue #5795: Fixed test_distutils failure on Debian ppc.
1200 - Issue #5768: Fixed bug in Unicode output logic and test case for same.
1202 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
1203 results in a handle_expt_event call, not handle_read_event, and POLLERR
1204 and POLLNVAL now call handle_close, not handle_expt_event. Also,
1205 dispatcher now has an 'ignore_log_types' attribute for suppressing
1206 log messages, which is set to 'warning' by default.
1208 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
1210 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
1211 a value in SafeConfigParser.
1213 - Issue #5732: added a new command in Distutils: check.
1215 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
1216 platforms. Initial patch by Paul Moore.
1218 - Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are
1219 now collapsed within the url properly before looking in cgi_directories.
1221 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
1222 Initial fix by Steven Bethard.
1224 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
1225 Initial fix by Wayne Davison.
1227 - Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
1229 - Issue #5694: removed spurious test output in Distutils (test_clean).
1231 - Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
1233 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
1235 - Issue #1726172: fix IndexError in the case of and empty response in ftplib.
1237 - Issue #2625: added missing iteritems() call to the for loop in
1238 mailbox.MH.get_message().
1240 - Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager
1241 so that users can install custom handlers/etc.
1243 - Issue #3551: Patch multiprocessing to raise a proper exception if the size of the
1244 object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs
1245 to note the limitation
1247 - unittest.assertNotEqual() now uses the inequality operator (!=) instead
1248 of the equality operator.
1250 - Issue #6001: Test discovery for unittest. Implemented in
1251 unittest.TestLoader.discover and from the command line.
1253 - Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added.
1254 addCleanup allows you to add cleanup functions that will be called
1255 unconditionally (after setUp if setUp fails, otherwise after tearDown). This
1256 allows for much simpler resource allocation and deallocation during tests.
1258 - Issue #3379: unittest.main now takes an optional exit argument. If False main
1259 doesn't call sys.exit allowing it to be used from the interactive interpreter.
1261 - Issue #5995: unittest.main now takes an optional verbosity argument allowing
1262 test modules to be run with a higher than default verbosity.
1264 - Issue #5995: A fix to allow you to run "python -m unittest test_module" or
1265 "python -m unittest test_module.TestClass" from the command line.
1267 - Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods;
1268 called immediately before and after a test run.
1270 - Issue #5663: better failure messages for unittest asserts. Default assertTrue
1271 and assertFalse messages are now useful. TestCase has a longMessage attribute.
1272 This defaults to False, but if set to True useful error messages are shown in
1273 addition to explicit messages passed to assert methods.
1275 - Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing
1277 - In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on
1278 printing out values.
1280 - Issue #4572: added SEEK_* symbolic constants to io module.
1282 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
1283 instead of performing them in functions. Helps prevent import deadlocking in
1286 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
1288 - Actually make the SimpleXMLRPCServer CGI handler work.
1290 - Issue #2522: locale.format now checks its first argument to ensure it has
1291 been passed only one pattern, avoiding mysterious errors where it appeared
1292 that it was failing to do localization.
1294 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
1297 - Issue #5619: Multiprocessing children disobey the debug flag and causes
1298 popups on windows buildbots. Patch applied to work around this issue.
1300 - Issue #5632: Thread.ident was None for the main thread and threads not created
1301 with the threading module.
1303 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
1305 - Issue #5387: Fixed mmap.move crash by integer overflow.
1307 - Issue #5261: Patch multiprocessing's semaphore.c to support context
1308 manager use: "with multiprocessing.Lock()" works now.
1310 - Issue #5177: Multiprocessing's SocketListener class now uses
1311 socket.SO_REUSEADDR on all connections so that the user no longer needs
1312 to wait 120 seconds for the socket to expire.
1314 - Adjusted _tkinter to compile without warnings when WITH_THREAD is not
1315 defined (part of issue #5035).
1317 - Issue #5561: Removed the sys.version_info shortcuts from platform's
1318 python_version() and python_version_tuple() since they produced different
1319 output compared to previous Python versions.
1321 - Issue #1034053: unittest now supports skipping tests and expected failures.
1323 - The unittest.TestCase.assertRaises() method now returns a context manager when
1324 not given a callable so that code to be tested can be written inline using
1327 - The unittest.TestCase.assertEqual() now displays the differences in lists,
1328 tuples, dicts and sets on failure. Many new handy type and comparison
1329 specific assert* methods have been added that fail with error messages
1330 actually useful for debugging. Contributed in part by Google. [Issue #2578]
1332 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
1333 forever on incomplete input. That caused tarfile.open() to hang when used
1334 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
1335 partial bzip2 compressed data.
1337 - Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to
1338 even if an exception occurs.
1340 - Issue #5381: Added object_pairs_hook to the json module. This allows
1341 OrderedDicts to be built by the decoder.
1343 - Issue #2110: Add support for thousands separator and 'n' type
1344 specifier to Decimal.__format__
1346 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
1347 '>' alignment characters.
1349 - Issue #1222: locale.format() bug when the thousands separator is a space
1352 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
1355 - collections.deque() objects now have a read-only attribute called maxlen.
1357 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
1358 it is has been populated and properly configured in order to prevent
1361 - Issue #4792: Prevent a segfault in _tkinter by using the
1362 guaranteed to be safe interp argument given to the PythonCmd in place of
1363 the Tcl interpreter taken from a PythonCmd_ClientData.
1365 - Issue #5193: Guarantee that Tkinter.Text.search returns a string.
1367 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
1368 Original patch by Akira Kitada.
1370 - Issue #5385: Fixed mmap crash after resize failure on windows.
1372 - Issue #5179: Fixed subprocess handle leak on failure on windows.
1374 - PEP 372: Added collections.OrderedDict().
1376 - The _asdict() for method for namedtuples now returns an OrderedDict().
1378 - The configparser module now defaults to using an ordered dictionary.
1380 - Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all
1383 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
1384 import guess_extension`` was used.
1386 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
1387 with same tagname but larger size than first map. (Windows)
1389 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
1392 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
1395 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
1397 - Issue #5052: make Distutils compatible with 2.3 again.
1399 - Deprecated methods of symtable.Symbol have been removed: is_keywordarg(),
1400 is_vararg(), and is_in_tuple().
1402 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
1405 - Issue #5287: Add exception handling around findCaller() call to help out
1408 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
1409 The file was resized to wrong size.
1411 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
1413 - Issue #2279: distutils.sdist.add_defaults now add files
1414 from the package_data and the data_files metadata.
1416 - Issue #5257: refactored all tests in distutils, so they use
1417 support.TempdirManager, to avoid writing in the tests directory.
1419 - Issue #4524: distutils build_script command failed with --with-suffix=3.
1420 Initial patch by Amaury Forgeot d'Arc.
1422 - Issue #2461: added tests for distutils.util
1424 - Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on
1425 LP64 platforms (most 64-bit Linux, bsd, unix systems).
1427 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
1428 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
1430 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
1431 under NT and OS2. Patch by Philip Jenvey.
1433 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
1434 to be recreated. This avoids a timing hole thanks to the old reliance on the
1435 ctime of the files involved.
1437 - Issue #5122: Synchronize tk load failure check to prevent a potential
1440 - Issue #1818: collections.namedtuple() now supports a keyword argument
1441 'rename' which lets invalid fieldnames be automatically converted to
1442 positional names in the form, _1, _2, ...
1444 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
1446 - Issue #5170: Fixed Unicode output bug in logging and added test case.
1447 This is a regression which did not occur in 2.5.
1449 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
1450 public documented method ``ZipImporter.get_filename()``.
1452 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
1453 the execution of packages by looking for and executing a ``__main__``
1454 submodule when a package name is supplied. Initial patch by Andi
1457 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
1458 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
1459 Tkapp_Call when calling from a thread different than the one that created
1460 the Tcl interpreter. Patch by Robert Hancock.
1462 - Issue #1520877: Now distutils.sysconfig reads $AR from the
1463 environment/Makefile. Patch by Douglas Greiman.
1465 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
1468 - Issue #1276768: The verbose option was not used in the code of
1469 distutils.file_util and distutils.dir_util.
1471 - Issue #5132: Fixed trouble building extensions under Solaris with
1472 --enabled-shared activated. Initial patch by Dave Peterson.
1474 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
1476 - Issue #2047: shutil.move() could believe that its destination path was
1477 inside its source path if it began with the same letters (e.g. "src" vs.
1480 - Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for
1481 Iterator and MutableSet.
1483 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
1485 - Issue #5021: doctest.testfile() did not create __name__ and
1486 collections.namedtuple() relied on __name__ being defined.
1488 - Backport importlib from Python 3.1. Only the import_module() function has
1489 been backported to help facilitate transitions from 2.7 to 3.1.
1491 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
1492 the tar file was overriden by the gztar one.
1494 - Issue #4863: distutils.mwerkscompiler has been removed.
1496 - Added a new itertools functions: combinations_with_replacement()
1499 - Issue #5032: added a step argument to itertools.count() and
1500 allowed non-integer arguments.
1502 - Fix and properly document the multiprocessing module's logging
1503 support, expose the internal levels and provide proper usage
1506 - Issue #1672332: fix unpickling of subnormal floats, which was
1507 producing a ValueError on some platforms.
1509 - Issue #3881: Help Tcl to load even when started through the
1510 unreadable local symlink to "Program Files" on Vista.
1512 - Issue #4710: Extract directories properly in the zipfile module;
1513 allow adding directories to a zipfile.
1515 - Issue #3807: _multiprocessing build fails when configure is passed
1516 --without-threads argument. When this occurs, _multiprocessing will
1517 be disabled, and not compiled.
1519 - Issue #5008: When a file is opened in append mode with the new IO library,
1520 do an explicit seek to the end of file (so that e.g. tell() returns the
1521 file size rather than 0). This is consistent with the behaviour of the
1522 traditional 2.x file object.
1524 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
1527 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
1528 which inherited from numbers.py which did not have __slots__ defined. The
1529 numbers hierarchy now has its own __slots__ declarations.
1531 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
1532 for *nix machines for negative handles and large int handles. Without this check
1533 it is possible to segfault the interpreter.
1535 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
1538 - Issue #1225107: inspect.isclass() returned True for instances with a custom
1541 - Issue #3997: zipfiles generated with more than 65536 files could not be
1542 opened with other applications.
1544 - Issue #1162154: inspect.getmembers() now skips attributes that raise
1545 AttributeError, e.g. a __slots__ attribute which has not been set.
1547 - Issue #1696199: Add collections.Counter() for rapid and convenient
1550 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
1552 - Issue #4272: Add an optional argument to the GzipFile constructor to override
1553 the timestamp in the gzip stream. The default value remains the current time.
1554 The information can be used by e.g. gunzip when decompressing. Patch by
1557 - Restore Python 2.3 compatibility for decimal.py.
1559 - Issue #1702551: distutils sdist was not excluding VCS directories under
1560 Windows. Inital solution by Guy Dalberto.
1562 - The _tkinter module functions "createfilehandler", "deletefilehandler",
1563 "createtimerhandler", "mainloop", "dooneevent" and "quit" have been
1564 deprecated for removal in 3.x
1566 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
1567 to the decimal module.
1569 - Issue #4812: add missing underscore prefix to some internal-use-only
1570 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
1572 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
1573 the function is not a generator.
1575 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
1576 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
1578 - Issue #4646: distutils was choking on empty options arg in the setup
1579 function. Original patch by Thomas Heller.
1581 - Fractions.from_float() no longer loses precision for integers too big to
1584 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
1585 did unnecessary work in the common case where no key function was specified.
1587 - Issue #3767: Convert Tk object to string in tkColorChooser.
1589 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
1591 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
1592 the code under test can be written inline if more practical.
1594 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
1595 works as expected in the interactive environment.
1597 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
1600 - Issue #4400: .pypirc default generated file was broken in distutils.
1602 - Issue #4736: io.BufferedRWPair's closed property now functions properly.
1604 - Issue #3954: Fix a potential SystemError in _hotshot.logreader error
1607 - Issue #4574: fix a crash in io.IncrementalNewlineDecoder when a carriage
1608 return encodes to more than one byte in the source encoding (e.g. UTF-16)
1609 and gets split on a chunk boundary.
1611 - Issue #4223: inspect.getsource() will now correctly display source code
1612 for packages loaded via zipimport (or any other conformant PEP 302
1613 loader). Original patch by Alexander Belopolsky.
1615 - Issue #4201: pdb can now access and display source code loaded via
1616 zipimport (or any other conformant PEP 302 loader). Original patch by
1617 Alexander Belopolsky.
1619 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
1620 302 conformant loader) will now work correctly in most cases (they
1621 are still subject to the constraints that exist for all code running
1622 from inside a module loaded via a PEP 302 loader and attempting to
1623 perform IO operations based on __file__). Original patch by
1624 Alexander Belopolsky.
1626 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
1627 allows backporting to maintenance branches. Original patch by
1628 Alexander Belopolsky.
1630 - Issue #4163: Use unicode-friendly word splitting in the textwrap functions
1631 when given an unicode string.
1633 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
1635 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1636 give correct results in the case where one argument is a quiet NaN
1637 and the other is a finite number that requires rounding.
1639 - Issue #1030250: Distutils created directories even when run with the
1642 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1645 - Issue #4529: fix the parser module's validation of try-except-finally
1648 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1649 not a malformed option.
1651 - Added the subprocess.check_output() convenience function to get output
1652 from a subprocess on success or raise an exception on error.
1654 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1655 support unusual filenames (such as those containing semi-colons) in
1656 Content-Disposition headers.
1658 - Issue #4384: Added logging integration with warnings module using
1659 captureWarnings(). This change includes a NullHandler which does nothing;
1660 it will be of use to library developers who want to avoid the "No handlers
1661 could be found for logger XXX" message which can appear if the library user
1662 doesn't configure logging.
1664 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1667 - Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
1668 the ctypes module is not present.
1670 - FileIO's mode attribute now always includes ``"b"``.
1672 - Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
1674 - httplib.HTTPConnection.putheader() now accepts an arbitrary number of values
1675 for any header, matching what the documentation has claimed for a while.
1677 - Issue #3774: Fixed an error when create a Tkinter menu item without command
1680 - Fixed a modulefinder crash on certain relative imports.
1682 - Issue #4150: Pdb's "up" command now works for generator frames in post-mortem
1685 - Issue #4092: Return ArgInfo as promised in the documentation from
1686 inspect.getargvalues.
1688 - Issue #3935: Properly support list subclasses in bisect's C implementation.
1690 - Issue #4014: Don't claim that Python has an Alpha release status, in addition
1691 to claiming it is Mature.
1693 - Issue #4730: Fixed the cPickle module to handle correctly astral characters
1694 when protocol 0 is used.
1696 - Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result,
1697 to be consistent with Apple tools.
1699 - Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing
1702 - Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
1704 - Issue #1737832 : plat-mac/EasyDialog.py no longer uses the broken aepack
1707 - Issue #1149804: macostools.mkdirs now even works when another process
1708 creates one of the needed subdirectories.
1710 - Issue #900506: added --no-zipimport flag to the bundlebuilder script
1712 - Issue #841800: bundlebuilder now works with 'python -O'
1714 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1715 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1717 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
1718 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1719 and getservbyport().
1721 - Issue #999042: The Python compiler now handles explict global statements
1722 correctly (should be assigned using STORE_GLOBAL opcode).
1724 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1725 new arguments introduced in 2.5.
1727 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1728 makeunicodedata.py and regenerated the Unicode database (This fixes
1729 u'\u1d79'.lower() == '\x00').
1731 - Windows locale mapping updated to Vista.
1736 - Ttk demos added in Demo/tkinter/ttk/
1738 - Issue #4677: add two list comprehension tests to pybench.
1743 - Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it
1744 compiles correctly under gcc on x86-64. This fixes a reported
1745 problem with the --with-tsc build on x86-64.
1747 - Add 2 new options to ``--with-universal-archs`` on MacOSX:
1748 ``intel`` builds a distribution with ``i386`` and ``x86_64`` architectures,
1749 while ``3-way`` builds a distribution with the ``ppc``, ``i386``
1750 and ``x86_64`` architectures.
1752 - Issue #6802: Fix build issues on MacOSX 10.6
1754 - Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
1756 - Issue 5390: Add uninstall icon independent of whether file
1757 extensions are installed.
1759 - Issue 5809: Specifying both --enable-framework and --enable-shared is
1760 an error. Configure now explicity tells you about this.
1762 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1763 and a python.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1766 - Issue #6094: Build correctly with Subversion 1.7.
1768 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1770 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1771 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1773 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1774 the order that backends for the dbm extension are checked.
1776 - Link the shared python library with $(MODLIBS).
1778 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1780 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1782 - Issue #4895: Use _strdup on Windows CE.
1784 - Issue #4472: "configure --enable-shared" now works on OSX
1786 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1788 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1790 - Issue #4289: Remove Cancel button from AdvancedDlg.
1792 - Issue #1656675: Register a drop handler for .py* files on Windows.
1794 - Issue #4120: Exclude manifest from extension modules in VS2008.
1796 - Issue #4091: Install pythonxy.dll in system32 again.
1798 - Issue #4018: Disable "for me" installations on Vista.
1800 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
1802 - Issue #4204: Fixed module build errors on FreeBSD 4.
1807 - Issue #6556: Fixed the Distutils configuration files location explanation
1810 - Issue #6801 : symmetric_difference_update also accepts |.
1811 Thanks to Carl Chenet.
1816 - Issue #7528: Add PyLong_AsLongAndOverflow (backported from py3k).
1818 - Issue #7228: Add '%lld' and '%llu' support to PyString_FromFormat(V)
1819 and PyErr_Format, on machines with HAVE_LONG_LONG defined.
1821 - Add new C-API function PyOS_string_to_double, and deprecated
1822 PyOS_ascii_atof and PyOS_ascii_strtod.
1824 - Removed _PyOS_double_to_string. Use PyOS_double_to_string
1825 instead. This is in preparation for (but not strictly related to)
1826 issue #7117, short float repr.
1828 - Issue #6624: PyArg_ParseTuple with "s" format when parsing argument with
1829 NULL: Bogus TypeError detail string.
1831 - Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
1834 - Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
1835 object at a specified file, function, and line number.
1837 - Issue #1419652: Change the first argument to PyImport_AppendInittab() to
1838 ``const char *`` as the string is stored beyond the call.
1840 - Some PyBytes_* aliases have been removed because they don't exist in 3.x.
1842 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1843 for negative arguments. Previously, it raised TypeError.
1845 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1847 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1848 the GIL is released, or owned by another thread.
1850 - Issue #4122: On Windows, fix a compilation error when using the
1851 Py_UNICODE_ISSPACE macro in an extension module.
1853 - Issue #4293: Py_AddPendingCall is now thread safe and can be used for
1854 asynchronous notifications to python from any thread. Documentation added.
1859 - Issue #6508: Add posix.{getresuid,getresgid,setresuid,setresgid}.
1861 - Issue #7078: Set struct.__doc__ from _struct.__doc__.
1863 - Issue #3366: Add erf, erfc, expm1, gamma, lgamma functions to math
1866 - Issue #6823: Allow time.strftime() to accept a tuple with a isdst field
1867 outside of the range of [-1, 1] by normalizing the value to within that
1870 - Issue #6877: Make it possible to link the readline extension to libedit
1873 - Issue #6944: Fix a SystemError when socket.getnameinfo() was called
1874 with something other than a tuple as first argument.
1876 - Issue #6865: Fix reference counting issue in the initialization of the pwd
1879 - Issue #6848: Fix curses module build failure on OS X 10.6.
1881 - Fix a segfault in expat when given a specially crafted input lead to the
1882 tokenizer not stopping.
1884 - Issue #6561: '\d' in a regex now matches only characters with
1885 Unicode category 'Nd' (Number, Decimal Digit). Previously it also
1886 matched characters with category 'No'.
1888 - Issue #1523: Remove deprecated overflow wrapping for struct.pack
1889 with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range
1890 integer now consistently raises struct.error.
1892 - Issues #1530559, #1741130: Fix various struct.pack inconsistencies
1893 for the integer formats ('bBhHiIlLqQ'). In the following, '*'
1894 represents any of '=', '<', '>'.
1896 - Packing a float now always gives a Deprecation Warning.
1897 Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
1899 - If x is not an int, long or float, then packing x will always
1900 result in struct.error. Previously an x with an __int__ method
1901 could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h'
1902 ,'*i', '*l', and an x with a __long__ method could be packed by
1903 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__,
1904 TypeError used to be raised (with a confusing error message) for
1905 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
1907 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1909 - Issue #4751: For hashlib algorithms provided by OpenSSL, the Python
1910 GIL is now released during computation on data lengths >= 2048 bytes.
1912 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1913 supporting objects as input no matter how it was compiled (built in
1914 implementations or external openssl library). NOTE: Undone in 2.7a2.
1916 - Issue #4397: Fix occasional test_socket failure on OS X.
1918 - Issue #4279: Fix build of parsermodule under Cygwin.
1920 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1922 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1924 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1926 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1929 - Issue #4365: Add crtassem.h constants to the msvcrt module.
1931 - Issue #4396: The parser module now correctly validates the with statement.
1933 - Issue #5228: Make functools.partial objects can now be pickled.
1938 - Issue #7431: use TESTFN in test_linecache instead of trying to create a
1939 file in the Lib/test directory, which might be read-only for the
1940 user running the tests.
1942 - Issue #7324: add a sanity check to regrtest argument parsing to
1943 catch the case of an option with no handler.
1945 - Issue #7312: Add a -F flag to run the selected tests in a loop until
1946 a test fails. Can be combined with -j.
1948 - Issue #7295: Do not use a hardcoded file name in test_tarfile.
1950 - Issue #7270: Add some dedicated unit tests for multi-thread synchronization
1951 primitives such as Lock, RLock, Condition, Event and Semaphore.
1953 - Issue #7222: Make thread "reaping" more reliable so that reference
1954 leak-chasing test runs give sensible results. The previous method of
1955 reaping threads could return successfully while some Thread objects were
1956 still referenced. This also introduces a new private function:
1957 :func:`thread._count()`.
1959 - Issue #7151: fixed regrtest -j so that output to stderr from a test no
1960 longer runs the risk of causing the worker thread to fail.
1962 - Issue #7055: test___all__ now greedily detects all modules which have an
1963 __all__ attribute, rather than using a hardcoded and incomplete list.
1965 - Issue #7058: Added save/restore for things like sys.argv and cwd to
1966 runtest_inner in regrtest, with warnings if the called test modifies them,
1967 and a new section in the summary report at the end.
1969 - Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6.
1971 - Issue #6806: test_platform failed under OS X 10.6.0 because ``sw_ver`` leaves
1972 off the trailing 0 in the version number.
1974 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
1975 Lib/lib-tk/test/test_tkinter/test_loadtk. With this, these tests demonstrate
1976 the same behaviour as test_ttkguionly (and now also test_tk) which is to
1977 skip the tests if DISPLAY is defined but can't be used.
1979 - Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
1980 regression tests in parallel, shortening the total runtime.
1982 - Issue #5354: New test support function import_fresh_module() makes
1983 it easy to import both normal and optimised versions of modules.
1984 test_heapq and test_warnings have been adjusted to use it, tests for
1985 other modules with both C and Python implementations in the stdlib
1986 can be adjusted to use it over time.
1988 - Fix test_warnings to no longer reset the warnings filter.
1990 - Fix test_logging to no longer reset the warnings filter.
1992 - Issue #5635: Fix running test_sys with tracing enabled.
1994 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
1995 that should cause a test to be skipped are now done using import_module
1996 from test support, which does the conversion.
1998 - Issue #5083: New 'gui' resource for regrtest.
2000 - Issue #5837: Certain sequences of calls to set() and unset() for
2001 support.EnvironmentVarGuard objects restored the environment variables
2002 incorrectly on __exit__.
2004 - Issue #2389: Array objects are now pickled in a portable manner.
2009 - Issue #5611: Auto-detect whether a C file uses tabs or spaces in Vim.
2012 What's New in Python 2.6 final
2013 ==============================
2015 *Release date: 01-Oct-2008*
2020 - Issue #3967: Fixed a crash in the count() and find() methods of string-like
2021 objects, when the "start" parameter is a huge value.
2023 - Issue #3965: Fixed a crash on Windows when open() is given an invalid
2024 filename or mode, and the filename is a unicode string.
2026 - Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
2031 - Issue #3965: Allow repeated calls to turtle.Screen, by making it a
2032 true singleton object.
2034 - Issue #3895: It was possible to crash the interpreter when an external timer
2035 was used with cProfile that returned an object that could not be converted
2038 - Issue #3950: Made turtle respect scale factors.
2040 - Issue #3547: Fixed ctypes structures bitfields of varying integer
2043 - Issue #3879: A regression in urllib.getproxies_enviroment was fixed.
2045 - Issue #3863: Disabled a unit test of fork being called from a thread
2046 when running on platforms known to exhibit OS bugs when attempting that.
2051 - Bug #3989: Package the 2to3 script (as 2to3.py) in the Windows
2054 - Bug #3887: Package x64 version of CRT for AMD64 Windows binaries.
2057 What's New in Python 2.6 release candidate 2?
2058 =============================================
2060 *Release date: 17-Sep-2008*
2068 - Security Issue #2: imageop did not validate arguments correctly and could
2069 segfault as a result.
2071 - Issue #3886: Possible integer overflows in the _hashopenssl module were
2077 - Issue #3850: recursion tests in Tools/scripts/find_recursion_limit.py can raise
2078 AttributeError instead of RuntimeError, depending in which C API call
2079 exactly the recursion limit is exceeded. Consequently, both exception types
2080 are caught and silenced.
2085 - Issue #3617: Include a licensing statement regarding the Microsoft
2086 C runtime in the Windows installer.
2089 What's New in Python 2.6 release candidate 1?
2090 =============================================
2092 *Release date: 12-Sep-2008*
2097 - Issue #3642: Suppress warning in obmalloc when size_t is larger than uint.
2099 - Issue #3743: In a few places, PY_FORMAT_SIZE_T was incorrectly used with
2100 PyString_FromFormat or PyErr_Format to display size_t values. The macro
2101 PY_FORMAT_SIZE_T is designed to select the correct format for the OS
2102 ``printf`` function, whereas PyString_FromFormat has an independent
2103 implementation and uses "%zd" on all platforms for size_t values.
2104 This makes a difference on win64, where ``printf`` needs "%Id" to display
2107 - Issue #3634: _weakref.ref(Exception).__init__() gave invalid return value on
2110 - Issue #3777: long() applied to a float object now always return a long
2111 object; previously an int would be returned for small values. the __long__
2112 method is allowed to return either an int or a long, but the behaviour of
2113 float objects should not change to respect backward compatibility.
2115 - Issue #3751: str.rpartition would perform a left-partition when called with
2118 - Issue #3683: Fix compilation when --without-threads is given.
2120 - Issue #3668: Fix a memory leak with the "s*" argument parser in
2121 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
2122 was correctly parsed but parsing of subsequent arguments failed.
2124 - Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
2125 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
2126 mechanism. In the process, fix a bug where isinstance() and issubclass(),
2127 when given a tuple of classes as second argument, were looking up
2128 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
2131 - Fix crashes on memory allocation failure found with failmalloc.
2133 - Fix memory leaks found with valgrind and update suppressions file.
2135 - Fix compiler warnings in opt mode which would lead to invalid memory reads.
2137 - Fix problem using wrong name in decimal module reported by pychecker.
2139 - Silenced another compiler warning about a used but not defined
2140 function 'stringlib_contains_obj'.
2142 - Added warnings on the use of ``__getslice__``, ``__setslice__``, or
2145 - Issue #3678: Correctly pass LDFLAGS and LDLAST to the linker on shared
2146 library targets in the Makefile.
2148 - Issue #1204: The configure script now tests for additional libraries
2149 that may be required when linking against readline. This fixes issues
2150 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
2155 - Aliased PyObject_Bytes to PyObject_Str.
2160 - Issue #3640: Pickling a list or a dict uses less local variables, to reduce
2161 stack usage in the case of deeply nested objects.
2163 - Issue #3629: Fix sre "bytecode" validator for an end case.
2165 - Issue #3811: The Unicode database was updated to 5.1.
2167 - Issue #3781: Further warnings.catch_warnings() cleanup to prevent
2168 silent misbehaviour when a single instance is nested in multiple
2169 with statements, or when the methods are invoked in the wrong order.
2171 - Issue #3809: Fixed spurious 'test.blah' file left behind by test_logging.
2173 - Issue #3781: Clean up the API for warnings.catch_warnings() by having it
2174 return a list or None rather than a custom object.
2176 - Issue #1638033: Cookie.Morsel gained the httponly attribute.
2178 - Issue #3535: zipfile couldn't read some zip files larger than 2GB.
2180 - Issue #3776: Deprecate the bsddb package for removal in 3.0.
2182 - Issue #3762: platform.architecture() fails if python is lanched via
2185 - Issue #3772: Fixed regression problem in StreamHandler.emit().
2187 - Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
2188 to the urlparse one. Added a PendingDeprecationWarning in the old
2189 module, it will be deprecated in the future.
2191 - Issue #2562: Fix distutils PKG-INFO writing logic to allow having
2192 non-ascii characters and Unicode in setup.py meta-data.
2194 - Issue #3726: Allow spaces in separators in logging configuration files.
2196 - Issue #3719: platform.architecture() fails if there are spaces in the
2197 path to the Python binary.
2199 - Issue 3602: Moved test.test_support.catch_warning() to
2200 warnings.catch_warnings() along with some API cleanup. Expanding the tests
2201 for catch_warnings() also led to an improvement in the raising of a
2202 DeprecationWarning related to warnings.warn_explicit().
2204 - The deprecation warnings for the old camelCase threading API were removed.
2206 - logging: fixed lack of use of encoding attribute specified on a stream.
2208 - Silenced a trivial compiler warning in the sqlite module.
2210 - Fixed two format strings in the _collections module.
2212 - Issue #3703: _fileio.FileIO gave unhelpful error message when trying to open a
2215 - Issue #3708: os.urandom no longer goes into an infinite loop when passed a
2216 non-integer floating point number.
2218 - Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
2224 - Issue #4301: Patch the logging module to add processName support, remove
2225 _check_logger_class from multiprocessing.
2227 - Issue #2975: When compiling several extension modules with Visual Studio 2008
2228 from the same python interpreter, some environment variables would grow
2231 - Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
2232 exploitation of poor argument checking.
2234 - sqlite3: Changed docstring of iterdump() to mark method as "Non-standard".
2236 - Issue #3103: Reduced globals symbols used by sqlite3 module and made sure all
2237 remaining ones have "pysqlite_" prefix.
2239 - Issue #3846: Release the GIL during sqlite3_prepare calls. This improves
2240 concurrent access to the same SQLite database from multiple
2246 - Issue #3781: Add test.test_support.check_warnings() as a convenience
2247 wrapper for warnings.catch_warnings() that makes it easier to check
2248 that expected warning messages are being reported.
2250 - Issue #3796: Some tests functions were not enabled in test_float.
2252 - Issue #3768: Move test_py3kwarn over to the new API for catch_warnings().
2257 - Issue #3833: Use a different upgrade code for Win64 installers.
2259 - Issue #2271: Set SecureCustomProperties so that installation will properly
2260 use the TARGETDIR even for unprivileged users.
2262 - Allow passing the MSI file name to merge.py.
2264 - Issue #3758: Rename the 'check' target to 'patchcheck' so as to not clash
2265 with GNU build target guidelines.
2268 What's New in Python 2.6 beta 3?
2269 ================================
2271 *Release date: 20-Aug-2008*
2276 - Issue #1878: Remove Py_TPFLAGS_HAVE_VERSION_TAG from
2277 Py_TPFLAGS_DEFAULT when not building the core. This means 3rd party
2278 extensions do not automatically benefit from the class attribute
2279 cache; they will have to explicitly add Py_TPFLAGS_HAVE_VERSION_TAG
2280 to their tp_flags field if they care. This is a backwards
2281 compatibility feature; in 3.0, all types will use the cache by
2284 - Keyword arguments can now follow starred arguments. (``f(a, *args,
2285 keyword=23)`` is now valid syntax.)
2287 - ctypes function pointers that are COM methods have a boolean True
2290 - Issue #3139: Make buffer-interface thread-safe wrt. PyArg_ParseTuple,
2291 by denying s# to parse objects that have a releasebuffer procedure,
2294 - Issue #3537: Fix an assertion failure when an empty but presized dict
2295 object was stored in the freelist.
2297 - Issue #1481296: Make long(float('nan')) and int(float('nan')) raise
2298 ValueError consistently across platforms.
2300 - Issue #3479: On platforms where sizeof(int) is smaller than sizeof(long)
2301 (64bit Unix, for example), unichr() would truncate its argument and return
2302 u'\x00' for unichr(2**32). Now it properly raises an OverflowError.
2304 - Apply security patches from Apple.
2306 - Issue #2542: Now that issubclass() may call arbitrary code, ensure that
2307 PyErr_ExceptionMatches returns 0 when an exception occurs there.
2309 - Issue #1819: function calls with several named parameters are now on
2310 average 35% faster (as measured by pybench).
2312 - Issue #2378: An unexpected UnboundLocalError or NameError could appear when
2313 the python debugger steps into a class statement: the free variables (local
2314 variables defined in an outer scope) would be deleted from the outer scope.
2316 - Issue #2620: Overflow checking when allocating or reallocating memory
2317 was not always being done properly in some python types and extension
2318 modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have
2319 all been updated to perform better checks and places in the code that
2320 would previously leak memory on the error path when such an allocation
2321 failed have been fixed.
2326 - Issue #3612: Added some missing basic types in ctypes.wintypes.
2328 - The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
2329 symtable.Symbol have been deprecated for removal in 3.0 and the next release.
2331 - Issue #2234: distutils failed for some versions of the cygwin compiler. The
2332 version reported by these tools does not necessarily follow the python
2333 version numbering scheme, so the module is less strict when parsing it.
2335 - Issue #2235: Added Py3k warnings for types which will become unhashable
2336 under the stricter __hash__ inheritance rules in 3.0. Several types
2337 which did not meet the rules for hash invariants and were already
2338 unhashable in 3.0 have now been explicitly flagged as unhashable in
2339 2.6 as well (collections.Mapping, collections.Set, unittest.TestSuite,
2340 xml.dom.minidom.NamedNodeMap, numbers.Number, UserList.UserList)
2342 - Update __all__ for cookielib, csv, os, urllib2, and weakref to include things
2343 imported into the module but exposed as part of the module's API.
2345 - Remove an unneeded import of abc.ABCMeta from 'inspect'.
2347 - Remove unneeded imports of 'sys' and 'warnings' from 'io'.
2349 - Remove unneeded imports of 'warnings' from shelve, filecmp, and dummy_thread.
2351 - Issue #3575: Incremental decoder's decode function now takes bytearray
2352 by using 's*' instead of 't#'.
2354 - Issue #2222: Fixed reference leak when occurred os.rename()
2355 fails unicode conversion on 2nd parameter. (windows only)
2357 - Issue 2464. urllib2 now supports a malformation in the URL received
2360 - Silence the DeprecationWarning raised when importing mimetools in
2361 BaseHTTPServer, cgi (and rfc822), httplib.
2363 - Issue #2776: fixed small issue when handling an URL with double slash
2364 after a 302 response in the case of not going through a proxy.
2366 - Issue #2676: in the email package, content-type parsing was hanging on
2367 pathological input because of quadratic or exponential behaviour of a
2370 - Issue #3476: binary buffered reading through the new "io" library is now
2373 - Silence the DeprecationWarning of rfc822 when it is imported by mimetools
2374 since mimetools itself is deprecated. Because modules are cached, all
2375 subsequent imports of rfc822 will not raise a visible DeprecationWarning.
2377 - Issue #3134: shutil referenced undefined WindowsError symbol.
2379 - Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
2380 menu entries were not deleted.
2382 - Copied the implementation of reduce() to _functools.reduce() to have a
2383 version that did not raise a DeprecationWarning under -3.
2385 - Issue #3205: When iterating over a BZ2File fails allocating memory, raise
2386 a MemoryError rather than silently stop the iteration.
2388 - Issue #3487: sre "bytecode" validator. Passing invalid "re-bytecode"
2389 to _sre.compile() will now be rejected. This should not affect anybody
2390 since the re.compile() function never generates invalid re-bytecode.
2392 - Issue #3436: Make csv.DictReader's fieldnames attribute a property so that
2393 upon first access it can be automatically initialized from the csv file if
2394 it wasn't initialized during instantiation.
2396 - Issue #2338: Create imp.reload() to help with transitioning to Python 3.0 as
2397 the reload() built-in has been removed.
2399 - Changed code in the following modules/packages to remove warnings raised
2400 while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
2401 ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
2402 filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
2403 pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
2404 subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
2405 threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
2407 - Issue #3039: Fix tarfile.TarFileCompat.writestr() which always
2408 raised an AttributeError.
2410 - Issue #2523: Fix quadratic behaviour when read()ing a binary file without
2411 asking for a specific length. This problem only affected files opened
2412 using the new "io" module, not the built-in open() function.
2414 - Issue #3449: Update decimal module to use most recent specification
2415 (v. 1.68) and tests (v. 2.58) from IBM.
2417 - Issue 3437: Bug fix in robotparser parsing of Allow: lines.
2419 - Issue 1592: Improve error reporting when operations are attempted
2422 - Deprecate the "ast" parser function aliases.
2424 - Issue #3120: On 64-bit Windows the subprocess module was truncating handles.
2426 - Issue #3303: Fix a crash in locale.strcoll() when calling it with
2429 - Issue #3302: Fix several crashes when calling locale's gettext functions
2430 with None arguments.
2432 - Issue #3389: Allow resolving dotted names for handlers in logging
2433 configuration files.
2435 - Deprecate the sunaudio module for removal in Python 3.0.
2437 - Issue #3394: zipfile.writestr sets external attributes when passed a
2438 file name rather than a ZipInfo instance, so files are extracted with
2439 mode 0600 rather than 000 under Unix.
2441 - Issue #1857: subprocess.Popen.poll gained an additional _deadstate keyword
2442 argument in python 2.5, this broke code that subclassed Popen to include its
2443 own poll method. Fixed my moving _deadstate to an _internal_poll method.
2448 - Generate the PatternGrammar pickle during "make install".
2453 - Issue #2235: the C API function PyObject_HashNotImplemented and its
2454 interaction with the tp_hash slot (added in 2.6b2) are now documented
2456 - Issue #643841: The language reference now provides more detailed
2457 coverage of the lookup process for special methods. The disclaimers
2458 regarding lack of coverage of new-style classes have also been
2459 removed, since the coverage is now fairly reasonable.
2462 What's New in Python 2.6 beta 2?
2463 ================================
2465 *Release date: 17-Jul-2008*
2470 - Issue #3156: Fix inconsistent behavior of the bytearray type: all
2471 its methods now allow for items objects that can be converted to
2472 an integer using operator.index().
2474 - Issue #3360: Fix incorrect parsing of '020000000000.0', which
2475 produced a ValueError instead of giving the correct float.
2477 - Issue #3083: Add alternate (#) formatting for bin, oct, hex output
2478 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
2480 - Issue #3008: the float type has a new instance method 'float.hex'
2481 and a new class method 'float.fromhex' to convert floating-point
2482 numbers to and from hexadecimal strings, respectively.
2484 - Issue #2235: __hash__ is once again inherited by default. To allow
2485 collections.Hashable to remain meaningful in the presence of the
2486 default hash implementation (object.__hash__), it is now possible
2487 to explicit block inheritance of hash by setting __hash__=None at
2488 the Python level, or tp_hash=PyObject_HashNotImplemented at the C
2491 - Issue #3221: Issue a RuntimeWarning instead of raising SystemError if
2492 the parent module cannot be found while performing an absolute import.
2493 This means that an incorrectly defined __package__ attribute will
2494 now only prevent relative imports in that module rather than causing
2495 all imports from that module to fail.
2497 - Issue #2517: Allow unicode messages in Exceptions again by correctly
2498 bypassing the instance dictionary when looking up __unicode__ on
2501 - Issue #3242: Fix a crash inside the print statement, if sys.stdout is
2502 set to a custom object whose write() method happens to install
2503 another file in sys.stdout.
2505 - Issue #3088: Corrected a race condition in classes derived from
2506 threading.local: the first member set by a thread could be saved in
2507 another thread's dictionary.
2509 - Issue #3004: Minor change to slice.indices(): the start and stop
2510 arguments are now treated identically, making the behaviour easier
2511 to describe and understand. For example, slice(None, -10,
2512 1).indices(9) now returns (0, 0, 1) instead of (0, -1, 1), and
2513 slice(None, 10, -1).indices(10) returns (9, 9, -1) instead of (9,
2516 - Issue #3219: Calling a function with repeated keyword arguments,
2517 f(a=2, a=23), would not cause a syntax error. This was a regression
2518 from 2.4 caused by the switch to the new compiler.
2520 - Issue #2862: Make int and float freelist management consistent with
2521 other freelists. Changes their CompactFreeList apis into
2522 ClearFreeList apis and calls them via gc.collect().
2527 - Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
2528 api functions without holding the GIL, which could lead to a fatal
2529 error when they failed.
2531 - Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
2533 - Issue #3395: fix reference in test_multiprocessing to old debugInfo method
2535 - Issue #3312: Fix two crashes in sqlite3.
2537 - Issue #1608818: Fix misbehavior in os.listdir() if readdir() fails.
2539 - Issue #3125: Remove copy_reg in multiprocessing and replace it with
2540 ForkingPickler.register() to resolve conflict with ctypes.
2542 - Issue #3090: Fixed ARCHFLAGS parsing on OS/X
2544 - Issue #3313: Fixed a crash when a failed dlopen() call does not set
2545 a valid dlerror() message.
2547 - Issue #3258: Fixed a crash when a ctypes POINTER type to an
2548 incomplete structure was created.
2550 - Issue #3339: dummy_thread.acquire() should not return None.
2552 - Issue #3285: Fractions from_float() and from_decimal() accept Integral arguments.
2554 - Issue #3301: Bisect module behaved badly when lo was negative.
2556 - Issue #839496: SimpleHTTPServer used to open text files in text mode. This is
2557 both unnecessary (HTTP allows text content to be sent in several forms) and
2558 wrong because the actual transmitted size could differ from the
2559 content-length. The problem had been corrected in the 2.4 branch, but never
2562 - Issue #2663: add filtering capability to shutil.copytree().
2564 - Issue #1622: Correct interpretation of various ZIP header fields.
2566 - Issue #1526: Allow more than 64k files to be added to Zip64 file.
2568 - Issue #1746: Correct handling of zipfile archive comments (previously
2569 archives with comments over 4k were flagged as invalid). Allow writing
2570 Zip files with archives by setting the 'comment' attribute of a ZipFile.
2572 - Issue #449227: The rlcompleter module now adds "(" to callable objects
2575 - Issue #3190: Pydoc now hides the automatic module attribute __package__ (the
2576 handling is now the same as that of other special attributes like __name__).
2578 - Issue #2885 (partial): The urllib.urlopen() function has been deprecated for
2579 removal in Python 3.0 in favor of urllib2.urlopen().
2581 - Issue #2113: Fix error in subprocess.Popen if the select system call is
2582 interrupted by a signal.
2584 - Issue #3309: Fix bz2.BZFile iterator to release its internal lock
2585 properly when raising an exception due to the bz2file being closed.
2586 Prevents a deadlock.
2588 - Issue #3094: httplib.HTTPSConnection Host: headers no longer include the
2589 redundant ":443" port number designation when the connection is using the
2590 default https port (443).
2592 - Issue #874900: after an os.fork() call the threading module state is cleaned
2593 up in the child process to prevent deadlock and report proper thread counts
2594 if the new process uses the threading module.
2599 - test.test_support.catch_warning now keeps track of all warnings it sees
2600 and is now better documented. Explicit unit tests for this context manager
2601 have been added to test_warnings.
2606 - Issue #3215: Build sqlite3 as sqlite3.dll, not sqlite3.pyd.
2612 - Document that robotparser has been renamed to urllib.robotparser in
2615 - Document that urlparse has been renamed to urllib.parse in Python 3.0.
2617 - Document that urllib2 is split across multiple modules and renamed in
2620 - Document that urllib is split across multiple modules and renamed in
2624 What's New in Python 2.6 beta 1?
2625 ================================
2627 *Release date: 18-June-2008*
2632 - Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
2633 argument being anything other than a dict or None. Also fixed a bug in error
2634 handling when 'message' and 'category' were both set to None, triggering a
2637 - Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
2638 holds the last (strong) reference to its referent.
2640 - Add future_builtins.ascii().
2642 - Several set methods now accept multiple arguments: update(), union(),
2643 intersection(), intersection_update(), difference(), and difference_update().
2645 - Issue #2898: Added sys.getsizeof() to retrieve size of objects in bytes.
2647 - New environment variable PYTHONIOENCODING.
2649 - Patch #2488: Add sys.maxsize.
2651 - Issue #2353: file.xreadlines() now emits a Py3k warning.
2653 - Issue #2863: generators now have a ``gen.__name__`` attribute that
2654 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
2655 ``func.func_code.co_name``. The repr() of a generator now also
2658 - Issue #2831: enumerate() now has a ``start`` argument.
2660 - Issue #2801: fix bug in the float.is_integer method where a
2661 ValueError was sometimes incorrectly raised.
2663 - Issue #2790: sys.flags was not properly exposing its bytes_warning
2666 - Issue #2196: hasattr() now lets exceptions which do not inherit
2667 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
2670 - Added checks for integer overflows, contributed by Google. Some are
2671 only available if asserts are left in the code, in cases where they
2672 can't be triggered from Python code.
2677 - Issue #1179: [CVE-2007-4965] Integer overflow in imageop module.
2679 - Issue #3116: marshal.dumps() had quadratic behavior for strings > 32Mb.
2681 - Issue #2138: Add factorial() to the math module.
2683 - The heapq module does comparisons using LT instead of LE. This
2684 makes its implementation match that used by list.sort().
2686 - Issue #2819: add full-precision summation function to math module,
2687 based on Hettinger's ASPN Python Cookbook recipe.
2689 - Issue #2592: delegate nb_index and the floor/truediv slots in
2692 - Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
2695 - Support for Windows 9x has been removed from the winsound module.
2697 - bsddb module updated to version 4.7.3.
2698 http://www.jcea.es/programacion/pybsddb.htm#bsddb3-4.7.3. This
2699 code should be compatible with Python 3.0.
2701 - Issue #2858: Fix potential memory corruption when
2702 bsddb.db.DBEnv.lock_get and other bsddb.db object constructors
2703 raised an exception.
2705 - Issue #2669: bsddb/__init__.py iteration no longer silently fails when
2706 the database has changed size during iteration. It now raises a
2707 RuntimeError in the same manner as a dictionary.
2709 - Issue #2870: cmathmodule.c compile error.
2711 - Added a threading.Thread.ident property.
2716 - logging.config: Removed out-of-date comment in _install_handlers and
2717 used issubclass in place of equality comparison of classes.
2719 - Issue #2722: Now the os.getcwd() supports very long path names.
2721 - Issue #2888: Fixed the behaviour of pprint when working with nested
2722 structures, to match the behaviour of 2.5 and 3.0 (now follows the common
2725 - Issue #1817: cgi now correctly handles the querystring on POST requests
2727 - Issue #3136: fileConfig()'s disabling of old loggers is now conditional via
2728 an optional disable_existing_loggers parameter, but the default value is
2729 such that the old behaviour is preserved. Thanks to Leandro Lucarella for
2732 - Issue #3126: StreamHandler and FileHandler check before calling "flush" and
2733 "close" that the stream object has these, using hasattr (thanks to bobf for
2736 - Issue #2912: platform.uname now tries to determine unknown information even if
2739 - The rfc822 module has been deprecated for removal in 3.0.
2741 - The mimetools module has been deprecated for removal in 3.0.
2743 - The ctypes.byref function now takes an optional second parameter
2744 which allows to specify an offset in bytes for the constructed
2745 pointer-like object.
2747 - Added the ast module.
2749 - Added the multiprocessing module, PEP 371.
2751 - Factored out the indentation cleaning from inspect.getdoc() into
2752 inspect.cleandoc() to ease standalone use.
2754 - Issue #1798: Add ctypes calling convention that allows safe access
2757 - Issue #2404: ctypes objects support the new pep3118 buffer interface.
2759 - Patch #2125: Add GetInteger and GetString methods for
2760 msilib.Record objects.
2762 - Issue #2782: The datetime module's strftime methods now accept
2763 unicode format strings just as time.strftime always has.
2765 - The sgmllib and htmllib modules have been deprecated for removal
2768 - Issue #3011: locale module alias table was updated to the latest
2769 version from the X.org locale.alias file.
2771 - Issue #1797 (partial fix): ctypes NULL function pointers have a
2772 False boolean value now.
2774 - Issue #2985: Allow 64-bit integer responses (``<i8>``) in XMLRPC
2777 - Issue #2877: The UserString.MutableString class has been removed in
2780 - Do not close external file objects passed to tarfile.open(mode='w:bz2')
2781 when the TarFile is closed.
2783 - Issue #2959: For consistency with other file-like objects, gzip's
2784 GzipFile.close() can now be called multiple times without raising
2787 - Issue #1390: Raise ValueError in toxml when an invalid comment would
2788 otherwise be produced.
2790 - Issue #2914: TimedRotatingFileHandler now takes an optional keyword
2791 argument "utc" to use UTC time rather than local time.
2793 - Issue #2929: TimedRotatingFileHandler was using the wrong path when
2794 deleting old log files (filename only instead of full path).
2796 - Issue #1775025: You can now specify zipfile members to open(),
2797 read() or extract() via a ZipInfo instance. This allows handling
2798 duplicate filenames in zipfiles.
2800 - Issue #961805: Fix Text.edit_modified() in Tkinter.
2802 - Issue #1793: Function ctypes.util.find_msvcrt() added that returns
2803 the name of the C runtime library that Python uses.
2804 ctypes.util.find_library(name) now call this function when name is
2807 - The statvfs module has been deprecated for removal in Python 3.0.
2809 - The sunaudiodev and SUNAUDIODEV modules have been deprecated for
2810 removal in Python 3.0.
2812 - The WAIT module from IRIX has been deprecated for removal in Python
2815 - The torgb module from IRIX has been deprecated for removal in Python
2818 - The SV module from IRIX has been deprecated for removal in Python
2821 - The readcd module from IRIX has been deprecated for removal in
2824 - The panelparser module from IRIX has been deprecated for removal in
2827 - The panel module from IRIX has been deprecated for removal in Python
2830 - The jpeg module from IRIX has been deprecated for removal in Python
2833 - The IOCTL module from IRIX has been deprecated for removal in Python
2836 - The IN module from IRIX has been deprecated for removal in Python
2839 - The imgfile module from IRIX has been deprecated for removal in
2842 - The GLWS module from IRIX has been deprecated for removal in Python
2845 - The GET module from IRIX has been deprecated for removal in Python
2848 - The fm module from IRIX has been deprecated for removal in Python
2851 - The FL, flp, and fl modules from IRIX have been deprecated for
2852 removal in Python 3.0.
2854 - The FILE module on IRIX has been deprecated for removal in Python
2857 - The ERRNO module on IRIX has been deprecated for removal in Python
2860 - The DEVICE, GL, gl, and cgen modules (which indirectly includes
2861 cgensupport) have been deprecated for removal in Python 3.0.
2863 - The CL, CL_old, and cl modules for IRIX have been deprecated for
2864 removal in Python 3.0.
2866 - The cdplayer module for IRIX has been deprecated for removal in
2869 - The cddb module for IRIX has been deprecated for removal in Python
2872 - The cd and CD modules for IRIX have been deprecated for removal in
2875 - The al and AL modules for IRIX have been deprecated for removal in
2878 - Issue #1713041: fix pprint's handling of maximum depth.
2880 - The timing module has been deprecated for removal in Python 3.0.
2882 - The sv module has been deprecated for removal in Python 3.0.
2884 - The multifile module has been deprecated as per PEP 4.
2886 - The imageop module has been deprecated for removal in Python 3.0.
2888 - Issue #2250: Exceptions raised during evaluation of names in
2889 rlcompleter's ``Completer.complete()`` method are now caught and
2892 - Issue #2659: Added ``break_on_hyphens`` option to textwrap
2895 - The mhlib module has been deprecated for removal in Python 3.0.
2897 - The linuxaudiodev module has been deprecated for removal in Python
2900 - The ihooks module has been deprecated for removal in Python 3.0.
2902 - The fpformat module has been deprecated for removal in Python 3.0.
2904 - The dl module has been deprecated for removal in Python 3.0.
2906 - The Canvas module has been deprecated for removal in Python 3.0.
2908 - The compiler package has been deprecated for removal in Python 3.0.
2910 - The Bastion and rexec modules have been deprecated for removal in
2913 - The bsddb185 module has been deprecated for removal in Python 3.0.
2915 - The pure module has been deprecated for removal in Python 3.0.
2917 - Issue #2487: change the semantics of math.ldexp(x, n) when n is too
2918 large to fit in a C long. ldexp(x, n) now returns a zero (with
2919 suitable sign) if n is large and negative; previously, it raised
2922 - The toaiff module has been deprecated for removal in Python 3.0.
2924 - The test.testall module has been deprecated for removal in Python
2927 - The new module has been deprecated for removal in Python 3.0.
2929 - The user module has been deprecated for removal in Python 3.0.
2931 - The stringold module has been deprecated for removal in Python 3.0.
2933 - The mutex module has been deprecated for removal in Python 3.0.
2935 - The imputil module has been deprecated for removal in Python 3.0.
2937 - test.test_support.catch_warning() gained a 'record' argument.
2939 - os.path.walk is deprecated in favor of os.walk.
2941 - pdb gained the "until" command.
2943 - The Mac Modules (including Carbon) have been deprecated for removal
2946 - Library: on MacOS X you can now set ``ARCHFLAGS`` in the shell
2947 environment to control the '-arch' flags that are used to build
2948 an extension. This was added for compatibility with Apple's build
2951 - The bundled OSX-specific copy of libbffi is now in sync with the version
2952 shipped with PyObjC 2.0 and includes support for x86_64 and ppc64 platforms.
2954 - The threading module gained aliases for names that will be removed in the
2960 - The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
2962 - Patch #1722225: Support QNX 6.
2964 - ``Lib/lib-old`` is now added to sys.path.
2966 - On MacOS X it is now possible to install the framework in 64-bit
2967 mode or even as a 4-way universal binary (that is, PPC, i386,
2968 PPC64 and x86_64 support in one binary).
2970 This is controlled by the configure argument ``--with-universal-archs``:
2972 - ``--with-universal-archs=all``: install 4-way universal
2974 - ``--with-universal-archs=32-bit``: install 2-way universal, 32-bit (the default)
2976 - ``--with-universal-archs=64-bit``: install 2-way universal, 64-bit
2978 This option should be used in combination with ``--enable-universalsdk=``.
2980 NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
2986 - Add ``PyType_Modified()`` as a public API to clear the type cache.
2988 - The PyBytes functions have been renamed to PyByteArray.
2990 - The PyString functions have been renamed to PyBytes. A batch of
2991 defines were added so that the linker still sees the original
2995 What's New in Python 2.6 alpha 3?
2996 =================================
2998 *Release date: 08-May-2008*
3003 - Issue #2719: backported the ``next()`` builtin from Python 3.
3005 - Issue #2681: The octal literal ``0o8`` was incorrecly acctepted. Now
3006 it properly raises a SyntaxError.
3008 - Issue #2617: Reserved -J and -X arguments for Jython, IronPython and
3009 other implementations of Python.
3011 - Implemented PEP 370: Per user site-packages directory.
3016 - Issue #2670: Fix a failure in urllib2.build_opener(), when passed
3017 two handlers that derive the same default base class.
3019 - Added kill, terminate and send_signal(sig) to subprocess.Popen.
3021 - Added phase(z) -> phi, polar(z) -> r, phi and rect(r, phi) -> z to
3024 - Four new methods were added to the math and cmath modules: acosh,
3025 asinh, atanh and log1p.
3027 - zlib.decompressobj().flush(value) no longer crashes the interpreter
3028 when passed a value less than or equal to zero.
3030 - Issue #1631171: Re-implement the 'warnings' module in C (the
3031 original Python code has been kept as backup). This will allow for
3032 using the 'warning's machinery in such places as the parser where
3033 use of pure Python code is not possible. Both the ``showarning()``
3034 and ``formatwarning()`` gain an optional 'line' argument which is
3035 not called by default for backwards-compatibility reasons. Setting
3036 ``warnings.showwarning()`` to an implementation that lacks support
3037 for the ``line`` argument will raise a DeprecationWarning.
3042 - The audiodev module has been deprecated for removal in Python 3.0.
3044 - Issue #2750: Add the 'json' package. Based on simplejson 1.9 and
3045 contributed by Bob Ippolito.
3047 - Issue #1734346: Support Unicode file names for zipfiles.
3049 - Issue #2581: distutils: Vista UAC/elevation support for
3052 - Issue #2635: Fix bug in 'fix_sentence_endings' textwrap.fill option,
3053 where an extra space was added after a word containing (but not
3054 ending in) '.', '!' or '?'.
3056 - Add from_buffer() and from_buffer_copy() class methods to ctypes
3059 - Issue #2682: ctypes callback functions no longer contain a cyclic
3060 reference to themselves.
3062 - The getpass module has been improved on Unix. It now uses /dev/tty
3063 by default and uses stderr instead of stdout. A GetPassWarning is
3064 issued when input echo cannot be controlled.
3066 - Issue #2014: Allow XML-RPC datetime objects to have dates before
3069 - Issue #2439: Added new function pkgutil.get_data(), which is a
3070 convenience wrapper for the PEP 302 get_data() API.
3072 - Issue #2616: The ctypes.pointer() and ctypes.POINTER() functions are
3073 now implemented in C for better performance.
3075 - Issue #2408: The ``_types`` module, which was used as in
3076 implementation detail of the public ``types`` module, has been
3077 removed and replaced by pure python code.
3079 - Issue #2513: distutils on Windows is now capable of cross-compiling
3080 extension modules between 32 and 64 bit platforms. See the distutls
3081 build documentation for more information.
3083 - Issue #815646: Individual file objects may now be used from multiple
3084 threads at once without fear of crashing the Python interpreter. If
3085 file.close() is called while an object is in use by another thread
3086 an IOError exception will be raised and the file will not be closed.
3088 - The bundled libffi copy is now in sync with the recently released
3089 libffi3.0.5 version, apart from some small changes to
3090 Modules/_ctypes/libffi/configure.ac.
3092 - Issue #2385: distutils.core.run_script() makes __file__ available,
3093 so the controlled environment will more closely mirror the typical
3094 script environment. This supports setup.py scripts that refer to
3100 - Issue #2550: The approach used by client/server code for obtaining
3101 ports to listen on in network-oriented tests has been refined in an
3102 effort to facilitate running multiple instances of the entire
3103 regression test suite in parallel without issue.
3104 test_support.bind_port() has been fixed such that it will always
3105 return a unique port -- which wasn't always the case with the
3106 previous implementation, especially if socket options had been set
3107 that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The
3108 new implementation of bind_port() will actually raise an exception
3109 if it is passed an AF_INET/SOCK_STREAM socket with either the
3110 SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if
3111 available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on
3112 the socket it's been passed. This currently only applies to
3113 Windows. This option prevents any other sockets from binding to the
3114 host/port we've bound to, thus removing the possibility of the
3115 'non-deterministic' behaviour, as Microsoft puts it, that occurs
3116 when a second SOCK_STREAM socket binds and accepts to a host/port
3117 that's already been bound by another socket. The optional preferred
3118 port parameter to bind_port() has been removed. Under no
3119 circumstances should tests be hard coding ports!
3121 test_support.find_unused_port() has also been introduced, which will
3122 pass a temporary socket object to bind_port() in order to obtain an
3123 unused port. The temporary socket object is then closed and
3124 deleted, and the port is returned. This method should only be used
3125 for obtaining an unused port in order to pass to an external program
3126 (i.e. the -accept [port] argument to openssl's s_server mode) or as
3127 a parameter to a server-oriented class that doesn't give you direct
3128 access to the underlying socket used.
3130 Finally, test_support.HOST has been introduced, which should be used
3131 for the host argument of any relevant socket calls (i.e. bind and
3134 The following tests were updated to following the new conventions:
3135 test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib,
3136 test_poplib, test_ftplib, test_telnetlib, test_socketserver,
3137 test_asynchat and test_socket_ssl.
3139 It is now possible for multiple instances of the regression test
3140 suite to run in parallel without issue.
3145 - Issue #1496032: On alpha, use -mieee when gcc is the compiler.
3147 - Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
3148 gcc is used as compiler.
3150 - Issue #2573: On MacOS X it is now possible to install the framework
3151 with a different name using --with-framework-name=NAME.
3156 - Added implementation of copysign, acosh, asinh, atanh and log1p to
3157 the new files Include/pymath.h and Python/pymath.h for platforms
3158 which provide the functions through their libm. The files also
3159 contains several helpers and constants for math.
3161 - Added a new convenience macro, PyErr_WarnPy3k, for issuing Py3k warnings.
3164 What's New in Python 2.6 alpha 2?
3165 =================================
3167 *Release date: 02-Apr-2008*
3172 - Issue #1733757: The interpreter would hang on shutdown if the
3173 tracing function set by sys.settrace is still active and happens to
3174 call threading.currentThread().
3176 - Patch #1442: properly report exceptions when the PYTHONSTARTUP file
3179 - The compilation of a class nested in another class used to leak one
3180 reference on the outer class name.
3182 - Patch #1810: compile() can now compile _ast trees as returned by
3183 ``compile(..., PyCF_ONLY_AST)``.
3185 - Patch #2426: Added sqlite3.Connection.iterdump method to allow easy
3186 dumping of databases. Contributed by Paul Kippes at PyCon 2008.
3188 - Patch #2477: Added from __future__ import unicode_literals.
3190 - Added backport of bytearray type.
3192 - Issue #2355: add Py3k warning for buffer().
3194 - Issue #1477: With narrow Unicode builds, the unicode escape sequence
3195 \Uxxxxxxxx did not accept values outside the Basic Multilingual
3196 Plane. This affected raw unicode literals and the
3197 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in
3198 this case, like normal unicode literals and the 'unicode-escape'
3201 - Issue #2348: add Py3k warning for file.softspace.
3203 - Issue #2346/#2347: add Py3k warnings for __methods__ and
3206 - Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
3208 - Issue #2400: Allow relative imports to "import *".
3210 - Issue #1745: Backport print function with ``from __future__ import
3213 - Issue #2332: add new attribute names for instance method objects.
3214 The two changes are: im_self -> __self__ and im_func -> __func__
3216 - Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on
3217 exception instances.
3219 - Issue #2371: Add a Py3k warning when catching an exception that
3220 doesn't derive from BaseException.
3222 - Issue #2341: Add a Py3k warning when raising an exception that
3223 doesn't derive from BaseException.
3225 - Issue #2321: use pymalloc for unicode object string data to reduce
3226 memory usage in some circumstances.
3228 - PEP 3127: octal literals now start with "0o". Old-style octal
3229 literals are still valid. There are binary literals with a prefix of
3230 "0b". This also affects int(x, 0).
3232 - Issue #2359: Adding deprecation warnings for array.{read,write}.
3234 - Issue #1779871: GNU gcc can now build Python on OS X because the
3235 flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no
3238 - Add a warning when asserting a non-empty tuple which is always true.
3240 - Issue #2179: speed up with statement execution by storing the exit
3241 method on the stack instead of in a temporary variable (patch by
3244 - Issue #2238: Some syntax errors in *args and **kwargs expressions
3245 could give bogus error messages.
3247 - Issue #2143: Fix embedded readline() hang on SSL socket EOF.
3252 - Patch #2240: Implement signal.setitimer and signal.getitimer.
3257 - Issue #2315: logging.handlers: TimedRotatingFileHandler now accounts
3258 for daylight savings time in calculating the next rollover.
3260 - Issue #2316: logging.handlers: TimedRotatingFileHandler now
3261 calculates rollovers correctly even when nothing is logged for a
3264 - Issue #2317: logging.handlers: TimedRotatingFileHandler now uses
3265 improved logic for removing old files.
3267 - Issue #2495: tokenize.untokenize now inserts a space between two
3268 consecutive string literals; previously, ["" ""] was rendered as
3269 [""""], which is incorrect python code.
3271 - Issue #2248: return the result of the QUIT command. from
3274 - Backport of Python 3.0's io module.
3276 - Issue #2482: Make sure that the coefficient of a Decimal is always
3277 stored as a str instance, not as a unicode instance. This ensures
3278 that str(Decimal) is always an instance of str.
3280 - Issue #2478: fix failure of decimal.Decimal(0).sqrt()
3282 - Issue #2432: give DictReader the dialect and line_num attributes
3283 advertised in the docs.
3285 - Issue #2460: Make Ellipsis object copyable.
3287 - Issue #1681432: Add triangular distribution to the random module
3289 - Issue #2136: urllib2's auth handler now allows single-quoted realms
3290 in the WWW-Authenticate header.
3292 - Issue #2434: Enhanced platform.win32_ver() to also work on Python
3293 installation which do not have the win32all package installed.
3295 - Added support to platform.uname() to also report the machine and
3296 processor information on Windows XP and later. As a result,
3297 platform.machine() and platform.processor() will report this
3298 information as well.
3300 - The library implementing the 2to3 conversion, lib2to3, was added to
3301 the standard distribution.
3303 - Issue #1747858: Fix chown to work with large uid's and gid's on
3306 - Issue #1202: zlib.crc32 and zlib.adler32 no longer return different
3307 values on 32-bit vs. 64-bit python interpreters. Both were correct,
3308 but they now both return a signed integer object for consistency.
3310 - Issue #1158: add %f format (fractions of a second represented as
3311 microseconds) to datetime objects. Understood by both strptime and
3314 - Issue #705836: struct.pack(">f", x) now raises OverflowError on all
3315 platforms when x is too large to fit into an IEEE 754 float;
3316 previously it only raised OverflowError on non IEEE 754 platforms.
3318 - Issues #2166, #1741 and #1531505: now distutils deals with HOME
3319 correctly under win32
3321 - Patch #1858: distutils: added multiple server support in .pypirc
3323 - Issue #1106316: pdb.post_mortem()'s parameter, "traceback", is now
3324 optional: it defaults to the traceback of the exception that is
3325 currently being handled (is mandatory to be in the middle of an
3326 exception, otherwise it raises ValueError).
3328 - Issue #1193577: A .shutdown() method has been added to SocketServers
3329 which terminates the .serve_forever() loop.
3331 - Issue #2220: handle rlcompleter attribute match failure more
3334 - Issue #2225: py_compile, when executed as a script, now returns a
3335 non- zero status code if not all files could be compiled
3338 - Bug #1725737: In distutils' sdist, exclude RCS, CVS etc. also in the
3339 root directory, and also exclude .hg, .git, .bzr, and _darcs.
3341 - Issue #1872: The struct module typecode for _Bool has been changed
3344 - The bundled libffi copy is now in sync with the recently released
3345 libffi3.0.4 version, apart from some small changes to
3346 Modules/_ctypes/libffi/configure.ac. On OS X, preconfigured libffi
3347 files are used. On all linux systems the --with-system-ffi
3348 configure option defaults to "yes".
3350 - Issue #1577: shutil.move() now calls os.rename() if the destination
3351 is a directory instead of copying-then-remove-source.
3356 - test_nis no longer fails when test.test_support.verbose is true and
3357 NIS is not set up on the testing machine.
3359 - Output comparison tests are no longer supported.
3361 - Rewrite test_errno to use unittest and no longer be a no-op.
3363 - GHOP 234: Convert test_extcall to doctest.
3365 - GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
3367 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to
3370 - Issue #2055: Convert test_fcntl to unittest.
3372 - Issue 1960: Convert test_gdbm to unittest.
3374 - GHOP 294: Convert test_contains, test_crypt, and test_select to
3377 - GHOP 238: Convert test_tokenize to use doctest.
3379 - GHOP 237: Rewrite test_thread using unittest.
3381 - Patch #2232: os.tmpfile might fail on Windows if the user has no
3382 permission to create files in the root directory.
3387 - A new script 2to3 is now installed, to run the 2.x to 3.x converter.
3389 - Python/memmove.c and Python/strerror.c have been removed; both
3390 functions are in the C89 standard library.
3392 - Patch #2284: Add -x64 option to rt.bat.
3397 - Patch #2477: Added PyParser_ParseFileFlagsEx() and
3398 PyParser_ParseStringFlagsFilenameEx().
3401 What's New in Python 2.6 alpha 1?
3402 =================================
3404 *Release date: 29-Feb-2008*
3409 - Issue #2051: pyc and pyo files are no longer created with permission
3410 644. The mode is now inherited from the py file.
3412 - Issue #2067: file.__exit__() now calls subclasses' close() method.
3414 - Patch #1759: Backport of PEP 3129 class decorators.
3416 - Issue #1881: An internal parser limit has been increased. Also see
3417 issue 215555 for a discussion.
3419 - Added the future_builtins module, which contains hex() and oct().
3420 These are the PEP 3127 version of these functions, designed to be
3421 compatible with the hex() and oct() builtins from Python 3.0. They
3422 differ slightly in their output formats from the existing, unchanged
3423 Python 2.6 builtins. The expected usage of the future_builtins
3425 from future_builtins import hex, oct
3427 - Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit
3428 exponents for exponents with absolute value < 100. Follows C99
3429 standard. This is a change on Windows, which would use 3 digits.
3430 Also, added 'n' to the formats that PyOS_ascii_formatd understands,
3431 so that any alterations it does to the resulting string will be
3432 available in stringlib/formatter.h (for float.__format__).
3434 - Implemented PEP 3101, Advanced String Formatting. This adds a new
3435 builtin format(); a format() method for str and unicode; a
3436 __format__() method to object, str, unicode, int, long, float, and
3437 datetime; the class string.Formatter; and the C API
3440 - Fixed several potential crashes, all caused by specially crafted
3441 __del__ methods exploiting objects in temporarily inconsistent
3444 - Issue #2115: Important speedup in setting __slot__ attributes. Also
3445 prevent a possible crash: an Abstract Base Class would try to access
3446 a slot on a registered virtual subclass.
3448 - Fixed repr() and str() of complex numbers with infinity or nan as
3449 real or imaginary part.
3451 - Clear all free lists during a gc.collect() of the highest generation
3452 in order to allow pymalloc to free more arenas. Python may give back
3453 memory to the OS earlier.
3455 - Issue #2045: Fix an infinite recursion triggered when printing a
3456 subclass of collections.defaultdict, if its default_factory is set
3459 - Fixed a minor memory leak in dictobject.c. The content of the free
3460 list was not freed on interpreter shutdown.
3462 - Limit free list of method and builtin function objects to 256
3465 - Patch #1953: Added ``sys._compact_freelists()`` and the C API
3466 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
3467 to compact the internal free lists of pre-allocted ints and floats.
3469 - Issue #1983: Fixed return type of fork(), fork1() and forkpty()
3470 calls. Python expected the return type int but the fork familie
3473 - Issue #1678380: Fix a bug that identifies 0j and -0j when they
3474 appear in the same code unit.
3476 - Issue #2025: Add tuple.count() and tuple.index() methods to comply
3477 with the collections.Sequence API.
3479 - Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and
3482 - Added ``PyType_ClearCache()`` and ``sys._clear_type_cache`` to clear
3483 the internal lookup cache for ref leak tests.
3485 - Patch #1473257: generator objects gain a gi_code attribute. This is
3486 the same object as the func_code attribute of the function that
3487 produced the generator.
3489 - Issue #1920: "while 0" statements were completely removed by the
3490 compiler, even in the presence of an "else" clause, which is
3491 supposed to be run when the condition is false. Now the compiler
3492 correctly emits bytecode for the "else" suite.
3494 - A few crashers fixed: weakref_in_del.py (issue #1377858);
3495 loosing_dict_ref.py (issue #1303614, test67.py);
3496 borrowed_ref_[34].py (not in tracker).
3498 - Issue #1069410: The "can't load dll" message box on Windows is
3499 suppressed while an extension is loaded by calling SetErrorMode in
3500 dynload_win.c. The error is still reported properly.
3502 - Issue #1915: Python compiles with --enable-unicode=no again. However
3503 several extension methods and modules do not work without unicode
3506 - Issue #1882: when compiling code from a string, encoding cookies in the
3507 second line of code were not always recognized correctly.
3509 - Issue #1679: "0x" was taken as a valid integer literal.
3511 - Issue #1865: ``bytes`` as an alias for ``str`` and b"" as an alias "" were
3514 - sys.float_info / PyFloat_GetInfo: The floating point information
3515 object was converted from a dict to a specialized structseq object.
3517 - Patch #1816: Added sys.flags structseq. It exposes the status of
3518 most command line arguments and PYTHON* environment variables.
3520 - Objects/structseq.c: Implemented new structseq representation. The
3521 patch makes structseqs (e.g. the return value of os.stat) more
3524 - Patch #1700288: added a type attribute cache that caches method
3525 accesses, resulting in speedups in heavily object-oriented code.
3527 - Bug #1776: __import__() no longer accepts filenames on any platform.
3528 The first parameter to __import__() must be a valid module name.
3530 - Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
3532 - Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE
3533 envvar and sys.dont_write_bytecode attribute. All these can be set
3534 to forbid Python to attempt to write compiled bytecode files.
3536 - Improve some exception messages when Windows fails to load an
3537 extension module. Now we get for example '%1 is not a valid Win32
3538 application' instead of 'error code 193'.
3540 - Bug #1481296: Fixed long(float('nan')) != 0L.
3542 - Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x,
3545 - Issue #1635: Platform independent creation and representation of NaN
3546 and INF. float("nan"), float("inf") and float("-inf") now work on
3547 every platform with IEEE 754 semantics.
3549 - Compiler now generates simpler and faster code for dictionary
3550 literals. The oparg for BUILD_MAP now indicates an estimated
3551 dictionary size. There is a new opcode, STORE_MAP, for adding
3552 entries to the dictionary.
3554 - Issue #1638: %zd configure test fails on Linux.
3556 - Issue #1620: New property decorator syntax was modifying the
3557 decorator in place instead of creating a new decorator object.
3559 - Issue #1538: Avoid copying string in split/rsplit if the split char
3562 - Issue #1553: An erroneous __length_hint__ can make list() raise a
3565 - PEP 366: Allow explicit relative imports when executing modules
3566 inside packages with the -m switch via a new module level
3567 __package__ attribute.
3569 - Issue #1402: Fix a crash on exit, when another thread is still
3570 running, and if the deallocation of its frames somehow calls the
3571 PyGILState_Ensure() / PyGILState_Release() functions.
3573 - Expose the Py_Py3kWarningFlag as sys.py3kwarning.
3575 - Issue #1445: Fix a SystemError when accessing the ``cell_contents``
3576 attribute of an empty cell object.
3578 - Issue #1460: The utf-7 incremental decoder did not accept truncated
3579 input. It now correctly saves its state between chunks of data.
3581 - Patch #1739468: Directories and zipfiles containing a __main__.py
3582 file can now be directly executed by passing their name to the
3583 interpreter. The directory/zipfile is automatically inserted as the
3584 first entry in sys.path.
3586 - Issue #1265: Fix a problem with sys.settrace, if the tracing
3587 function uses a generator expression when at the same time the
3588 executed code is closing a paused generator.
3590 - sets and frozensets now have an isdisjoint() method.
3592 - optimize the performance of builtin.sum().
3594 - Fix warnings found by the new version of the Coverity checker.
3596 - The enumerate() builtin function is no longer bounded to sequences
3597 smaller than LONG_MAX. Formerly, it raised an OverflowError. Now,
3598 automatically shifts from ints to longs.
3600 - Issue #1686386: Tuple's tp_repr did not take into account the
3601 possibility of having a self-referential tuple, which is possible
3602 from C code. Nor did object's tp_str consider that a type's tp_str
3603 could do something that could lead to an inifinite recursion.
3604 Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the
3607 - Issue #1164: It was possible to trigger deadlock when using the
3608 'print' statement to write to a file since the GIL was not released
3609 as needed. Now PyObject_Print() does the right thing along with
3610 various tp_print implementations of the built-in types and those in
3611 the collections module.
3613 - Issue #1147: Exceptions were directly allowing string exceptions in
3614 their throw() method even though string exceptions no longer
3617 - Issue #1096: Prevent a segfault from getting the repr of a very
3618 deeply nested list by using the recursion counter.
3620 - Issue #1202533: Fix infinite recursion calls triggered by calls to
3621 PyObject_Call() never calling back out to Python code to trigger
3622 recursion depth updates/checks. Required the creation of a static
3623 RuntimeError instance in case normalizing an exception put the
3624 recursion check value past its limit. Fixes crashers
3625 infinite_rec_(1|2|4|5).py.
3627 - Patch #1031213: Decode source line in SyntaxErrors back to its
3628 original source encoding.
3630 - Patch #1673759: add a missing overflow check when formatting floats
3633 - Prevent expandtabs() on string and unicode objects from causing a
3634 segfault when a large width is passed on 32-bit platforms.
3636 - Issue #1733488: Fix compilation of bufferobject.c on AIX.
3638 - Issue #1722485: remove docstrings again when running with -OO.
3640 - Add new attribute names for function objects. All the func_* become
3641 __*__ attributes. (Some already existed, e.g., __doc__ and
3644 - Add -3 option to the interpreter to warn about features that are
3645 deprecated and will be changed/removed in Python 3.0.
3647 - Patch #1686487: you can now pass any mapping after '**' in function
3650 - except clauses may now be spelled either "except E, target:" or
3651 "except E as target:". This is to provide forwards compatibility
3654 - Deprecate BaseException.message as per PEP 352.
3656 - Issue #1303614: don't expose object's __dict__ when the dict is
3657 inherited from a builtin base.
3659 - When __slots__ are set to a unicode string, make it work the same as
3660 setting a plain string, ie don't expand to single letter identifiers.
3662 - Request #1191699: Slices can now be pickled.
3664 - Request #1193128: str.translate() now allows a None argument for
3665 translations that only remove characters without re-mapping the
3666 remaining characters.
3668 - Patch #1682205: a TypeError while unpacking an iterable is no longer
3669 masked by a generic one with the message "unpack non-sequence".
3671 - Remove unused file Python/fmod.c.
3673 - Bug #1683368: The object.__init__() and object.__new__() methods are
3674 now stricter in rejecting excess arguments. The only time when
3675 either allows excess arguments is when it is not overridden and the
3676 other one is. For backwards compatibility, when both are
3677 overridden, it is a deprecation warning (for now; maybe a Py3k
3678 warning later). Also, type.__init__() insists on the same signature
3679 as supported by type.__new__().
3681 - Patch #1675423: PyComplex_AsCComplex() now tries to convert an
3682 object to complex using its __complex__() method before falling back
3683 to the __float__() method. Therefore, the functions in the cmath
3684 module now can operate on objects that define a __complex__()
3687 - Patch #1623563: allow __class__ assignment for classes with
3688 __slots__. The old and the new class are still required to have the
3691 - Patch #1642547: Fix an error/crash when encountering syntax errors
3692 in complex if statements.
3694 - Patch #1462488: Python no longer segfaults when
3695 ``object.__reduce_ex__()`` is called with an object that is faking
3698 - Patch #1680015: Don't modify __slots__ tuple if it contains an
3701 - Patch #1444529: the builtin compile() now accepts keyword arguments.
3703 - Bug #1678647: write a newline after printing an exception in any
3704 case, even when converting the value to a string failed.
3706 - The dir() function has been extended to call the __dir__() method on
3707 its argument, if it exists. If not, it will work like before. This
3708 allows customizing the output of dir() in the presence of a
3711 - Patch #922167: Python no longer segfaults when faced with infinitely
3712 self-recursive reload() calls (as reported by bug #742342).
3714 - Patch #1675981: remove unreachable code from ``type.__new__()``
3717 - Patch #1491866: change the complex() constructor to allow
3718 parthensized forms. This means complex(repr(x)) now works instead of
3719 raising a ValueError.
3721 - Patch #703779: unset __file__ in __main__ after running a file. This
3722 makes the filenames the warning module prints much more sensible
3723 when a PYTHONSTARTUP file is used.
3725 - Variant of patch #697613: don't exit the interpreter on a SystemExit
3726 exception if the -i command line option or PYTHONINSPECT environment
3727 variable is given, but break into the interactive interpreter just
3728 like on other exceptions or normal program exit.
3730 - Patch #1638879: don't accept strings with embedded NUL bytes in
3733 - Bug #1674503: close the file opened by execfile() in an error
3736 - Patch #1674228: when assigning a slice (old-style), check for the
3737 sq_ass_slice instead of the sq_slice slot.
3739 - When printing an unraisable error, don't print exceptions. before
3740 the name. This duplicates the behavior whening normally printing
3743 - Bug #1653736: Properly discard third argument to
3744 slot_nb_inplace_power.
3746 - PEP 352: Raising a string exception now triggers a TypeError.
3747 Attempting to catch a string exception raises DeprecationWarning.
3749 - Bug #1377858: Fix the segfaulting of the interpreter when an object
3750 created a weakref on itself during a __del__ call for new-style
3751 classes (classic classes still have the bug).
3753 - Bug #1579370: Make PyTraceBack_Here use the current thread, not the
3754 frame's thread state.
3756 - patch #1630975: Fix crash when replacing sys.stdout in
3759 - Prevent seg fault on shutdown which could occur if an object raised
3762 - Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to
3763 avoid relying on atexit.
3765 - Bug #1590891: random.randrange don't return correct value for big
3768 - Patch #1586791: Better exception messages for some operations on
3769 strings, tuples and lists.
3771 - Bug #1067760: Deprecate passing floats to file.seek.
3773 - Bug #1591996: Correctly forward exception in instance_contains().
3775 - Bug #1588287: fix invalid assertion for `1,2` in debug builds.
3777 - Bug #1576657: when setting a KeyError for a tuple key, make sure
3778 that the tuple isn't used as the "exception arguments tuple".
3780 - Bug #1565514: SystemError not raised on too many nested blocks.
3782 - Bug #1576174: WindowsError now displays the windows error code
3783 again, no longer the posix error code.
3785 - Patch #1549049: Support long values in structmember, issue warnings
3786 if the assigned value for structmember fields gets truncated.
3788 - Update the peephole optimizer to remove more dead code (jumps after
3789 returns) and inline unconditional jumps to returns.
3791 - Bug #1545497: when given an explicit base, int() did ignore NULs
3792 embedded in the string to convert.
3794 - Bug #1569998: break inside a try statement (outside a loop) is now
3795 recognized and rejected.
3797 - list.pop(x) accepts any object x following the __index__ protocol.
3799 - A number of places, including integer negation and absolute value,
3800 were fixed to not rely on undefined behaviour of the C compiler
3803 - Bug #1566800: make sure that EnvironmentError can be called with any
3804 number of arguments, as was the case in Python 2.4.
3806 - Patch #1567691: super() and new.instancemethod() now don't accept
3807 keyword arguments any more (previously they accepted them, but
3810 - Fix a bug in the parser's future statement handling that led to
3811 "with" not being recognized as a keyword after, e.g., this
3812 statement: from __future__ import division, with_statement
3814 - Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
3816 - Fix %zd string formatting on Mac OS X so it prints negative numbers.
3818 - Allow exception instances to be directly sliced again.
3820 - Bug #1551432: Exceptions do not define an explicit __unicode__
3821 method. This allows calling unicode() on exceptions classes
3822 directly to succeed.
3824 - Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
3825 Also make sure that every exception class has __module__ set to
3828 - Bug #1550983: emit better error messages for erroneous relative
3829 imports (if not in package and if beyond toplevel package).
3831 - Overflow checking code in integer division ran afoul of new gcc
3832 optimizations. Changed to be more standard-conforming.
3834 - Patch #1542451: disallow continue anywhere under a finally.
3836 - Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
3838 - The return tuple from str.rpartition(sep) is (tail, sep, head) where
3839 head is the original string if sep was not found.
3841 - Bug #1520864: unpacking singleton tuples in list comprehensions and
3842 generator expressions (x for x, in ... ) works again. Fixing this
3843 problem required changing the .pyc magic number. This means that
3844 .pyc files generated before 2.5c2 will be regenerated.
3846 - ``with`` and ``as`` are now keywords.
3848 - Bug #1664966: Fix crash in exec if Unicode filename can't be
3851 - Issue #1537: Changed GeneratorExit's base class from Exception to
3854 - Issue #1703448: A joined thread could show up in the
3855 threading.enumerate() list after the join() for a brief period until
3862 - Patch #2274: Add heapq.heappushpop().
3864 - Add inspect.isabstract(object) to fix bug #2223
3866 - Add a __format__ method to Decimal, to support PEP 3101.
3868 - Add a timing parameter when using trace.Trace to print out
3871 - Issue #1627: httplib now ignores negative Content-Length headers.
3873 - Issue #900744: If an invalid chunked-encoding header is sent by a
3874 server, httplib will now raise IncompleteRead and close the
3875 connection instead of raising ValueError.
3877 - Issue #1492: The content type of BaseHTTPServer error messages can
3880 - Issue #1781: ConfigParser now does not let you add the "default" section
3883 - Removed uses of dict.has_key() from distutils, and uses of
3884 callable() from copy_reg.py, so the interpreter now starts up
3885 without warnings when '-3' is given. More work like this needs to
3886 be done in the rest of the stdlib.
3888 - Issue #1916: added isgenerator() and isgeneratorfunction() to
3891 - Issue #1224: Fixed bad url parsing when path begins with double
3894 - ctypes instances that are not or do not contain pointers can now be
3897 - Patch #1966: Break infinite loop in httplib when the servers
3898 implements the chunked encoding incorrectly.
3900 - Rename rational.py to fractions.py and the rational.Rational class
3901 to fractions.Fraction, to avoid the name clash with the abstract
3902 base class numbers.Rational. See discussion in issue #1682.
3904 - The pickletools module now provides an optimize() function that
3905 eliminates unused PUT opcodes from a pickle string.
3907 - Patch #2021: Allow tempfile.NamedTemporaryFile and
3908 SpooledTemporaryFile to be used in with statements by correctly
3909 supporting the context management protocol.
3911 - Patch #1979: Add rich comparisons to Decimal, and make Decimal
3912 comparisons involving a NaN follow the IEEE 754 standard.
3914 - Issue #2004: tarfile.py: Use mode 0700 for temporary directories and
3915 default permissions for missing directories.
3917 - Issue #175006: The debugger used to skip the condition of a "while"
3918 statement after the first iteration. Now it correctly steps on the
3919 expression, and breakpoints on the "while" statement are honored on
3922 - Issue #1765140: add an optional delay argument to FileHandler and
3923 its subclasses. Defaults to false (existing behaviour), but if true,
3924 defers opening the file until the first call to emit().
3926 - The pprint module now supports sets and frozensets.
3928 - Issue #1221598: add optional callbacks to ftplib.FTP's storbinary()
3929 and storlines() methods. (Contributed by Phil Schwartz)
3931 - Issue #1715: include sub-extension modules in pydoc's text output.
3933 - Issue #1836: fix an off-by-one bug in TimedRotatingHandler's
3934 rollover time calculation.
3936 - Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a
3939 - Issue #932563: add LoggerAdapter convenience class to make it easier
3940 to add contextual information in logging output.
3942 - Issue #1760556: fix a bug to avoid FileHandler throwing an exception
3945 - Bug #1530959: distutils' build command now uses different build
3946 directory when building extension modules against versions of Python
3947 compiled with ``--with-pydebug``.
3949 - Issue #1555501: move plistlib from plat-mac directory to general
3952 - Issue #1269: fix a bug in pstats.add_callers() and add a unit test
3955 - Issue #1669: don't allow shutil.rmtree() to be called on a symlink
3958 - Issue #1664522: in urllib, don't read non-existing directories in
3959 ftp mode, returning a 0-byte file -- raise an IOError instead.
3961 - Issue #856047: respect the ``no_proxy`` environment variable when
3962 using the ``http_proxy`` etc. environment variables in urllib.
3964 - Issue #1178141: add a getcode() method to the addinfourls that
3965 urllib.open() returns so that you can retrieve the HTTP status code.
3967 - Issue #1003: Fix zipfile decryption check, it would fail zip files
3968 with extended local headers.
3970 - Issue #1189216: Fix the zipfile module to work on archives with
3971 headers past the 2**31 byte boundary.
3973 - Issue #1336: fix a race condition in subprocess.Popen if the garbage
3974 collector kicked in at the wrong time that would cause the process
3975 to hang when the child wrote to stderr.
3977 - Issue #1146: fix how textwrap breaks a long word that would start in
3978 the last column of a line.
3980 - Issue #1693149: trace.py --ignore-module - accept multiple
3981 comma-separated modules to be given.
3983 - Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a
3984 just-created (and empty) instance. Thanks Jonathan Share.
3986 - Issue #1861: Added an attribute to the sched module which returns an
3987 ordered list of upcoming events (displayed as named tuples).
3989 - Issue #1837: The queue module now also supports a LIFO queue and a
3992 - Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
3993 (patch by Stefan Wehr). Also, fix an off-by-one bug in
3996 - Issue #1831: ctypes now raises a TypeError if conflicting positional
3997 and named arguments are passed to a Structure or Union initializer.
3998 When too many positional arguments are passed, also a TypeError is
3999 raised instead of a ValueError.
4001 - Convert the internal ctypes array type cache to a WeakValueDict so
4002 that array types do not live longer than needed.
4004 - Issue #1786: pdb should use its own stdin/stdout around an exec call
4005 and when creating a recursive instance.
4007 - Issue #1698398: ZipFile.printdir() crashed because the format string
4008 expected a tuple type of length six instead of time.struct_time
4011 - Issue #1780: The Decimal constructor now accepts arbitrary leading
4012 and trailing whitespace when constructing from a string.
4013 Context.create_decimal no longer accepts trailing newlines.
4015 - Decimal.as_tuple(), difflib.find_longest_match() and inspect
4016 functions that returned a tuple now return a named tuple.
4018 - Doctest now returns results as a named tuple for readability:
4019 (0, 7) --> TestResults(failed=0, attempted=7)
4021 - Issue #846388:q re.match is interruptible now, which is particularly
4022 good for long regular expression matches.
4024 - Patch #1137: allow setting buffer_size attribute on pyexpat Parser
4025 objects to set the character data buffer size.
4027 - Issue #1757: The hash of a Decimal instance is no longer affected by
4028 the current context.
4030 - Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
4033 - Issue #1646: Make socket support the TIPC protocol.
4035 - Bug #1742: return os.curdir from os.path.relpath() if both arguments
4036 are equal instead of raising an exception.
4038 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
4040 - Patch #1698: allow '@' in username parsed by urlparse.py.
4042 - Issue #1735: TarFile.extractall() now correctly sets directory
4043 permissions and times.
4045 - Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
4047 - Bug #1687: Fxed plistlib.py restricts <integer> to Python int when
4050 - Issue #1700: Regular expression inline flags incorrectly handle
4051 certain unicode characters.
4053 - Issue #1689: PEP 3141, numeric abstract base classes.
4055 - Tk issue #1851526: Return results from Python callbacks to Tcl as
4058 - Issue #1642: Fix segfault in ctypes when trying to delete attributes.
4060 - Issue #1727780: Support loading pickles of random.Random objects
4061 created on 32-bit systems on 64-bit systems, and vice versa. As a
4062 consequence of the change, Random pickles created by Python 2.6
4063 cannot be loaded in Python 2.5.
4065 - Issue #1455: The distutils package now supports VS 2005 and VS 2008
4066 for both the msvccompiler and cygwincompiler.
4068 - Issue #1531: tarfile.py: Read fileobj from the current offset, do
4069 not seek to the start.
4071 - Issue #1534: Added a dictionary sys.float_info with information
4072 about the internal floating point type to the sys module.
4074 - Issue #1429818: patch for trace and doctest modules so they play
4077 - doctest made a bad assumption that a package's __loader__.get_data()
4078 method used universal newlines.
4080 - Issue #1705170: contextlib.contextmanager was still swallowing
4081 StopIteration in some cases. This should no longer happen.
4083 - Issue #1292: On alpha, arm, ppc, and s390 linux systems the
4084 --with-system-ffi configure option defaults to "yes".
4086 - IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
4089 - Issues #1181, #1287: unsetenv() is now called when the
4090 os.environ.pop() and os.environ.clear() methods are used.
4092 - ctypes will now work correctly on 32-bit systems when Python is
4093 configured with --with-system-ffi.
4095 - Patch #1203: ctypes now does work on OS X when Python is built with
4096 --disable-toolbox-glue.
4098 - collections.deque() now supports a "maxlen" argument.
4100 - itertools.count() is no longer bounded to LONG_MAX. Formerly, it
4101 raised an OverflowError. Now, automatically shifts from ints to
4104 - Added itertools.product() which forms the Cartesian product of the
4107 - Added itertools.combinations() and itertools.permutations().
4109 - Patch #1541463: optimize performance of cgi.FieldStorage operations.
4111 - Decimal is fully updated to the latest Decimal Specification
4114 - Bug #1153: repr.repr() now doesn't require set and dictionary items
4115 to be orderable to properly represent them.
4117 - A 'c_longdouble' type was added to the ctypes module.
4119 - Bug #1709599: Run test_1565150 only if the file system is NTFS.
4121 - When encountering a password-protected robots.txt file the
4122 RobotFileParser no longer prompts interactively for a username and
4123 password (bug 813986).
4125 - TarFile.__init__() no longer fails if no name argument is passed and
4126 the fileobj argument has no usable name attribute (e.g. StringIO).
4128 - The functools module now provides 'reduce', for forward
4129 compatibility with Python 3000.
4131 - Server-side SSL support and cert verification added, by Bill
4134 - socket.ssl deprecated; use new ssl module instead.
4136 - uuid creation is now threadsafe.
4138 - EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
4141 - GB18030 codec now can encode additional two-byte characters that are
4144 - Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
4146 - Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
4147 represent the result in a single character.
4149 - Bug #978833: Close https sockets by releasing the _ssl object.
4151 - Change location of the package index to pypi.python.org/pypi
4153 - Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
4154 ctypes.c_wchar_p when they point to an invalid location. As a
4155 sideeffect the representation of these instances has changed.
4157 - tarfile.py: Added "exclude" keyword argument to TarFile.add().
4159 - Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple
4162 - The urlopen function of urllib2 now has an optional timeout
4163 parameter (note that it actually works with HTTP, HTTPS, FTP and
4166 - In ftplib, the FTP.ntransfercmd method, when in passive mode, now
4167 uses the socket.create_connection function, using the timeout
4168 specified at connection time.
4170 - Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
4171 reads a file that ends with incomplete sequence and sizehint
4172 argument for .read() is specified.
4174 - Bug #1730389: Change time.strptime() to use ``\s+`` instead of
4175 ``\s*`` when matching spaces in the specified format argument.
4177 - Bugs #1668596/#1720897: distutils now copies data files even if
4178 package_dir is empty.
4180 - sha now raises a DeprecationWarning upon import.
4182 - md5 now raises a DeprecationWarning upon import.
4184 - Issue #1385: The hmac module now computes the correct hmac when
4185 using hashes with a block size other than 64 bytes (such as sha384
4188 - mimify now raises a DeprecationWarning upon import.
4190 - MimeWriter now raises a DeprecationWarning upon import.
4192 - tarfile.py: Improved unicode support. Unicode input names are now
4193 officially supported. Added "errors" argument to the TarFile class.
4195 - urllib.ftpwrapper class now accepts an optional timeout.
4197 - shlex.split() now has an optional "posix" parameter.
4199 - The posixfile module now raises a DeprecationWarning.
4201 - Remove the gopherlib module. This also leads to the removal of
4202 gopher support in urllib/urllib2.
4204 - Fix bug in marshal where bad data would cause a segfault due to lack
4205 of an infinite recursion check.
4207 - Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
4210 - HTML-escape the plain traceback in cgitb's HTML output, to prevent
4211 the traceback inadvertently or maliciously closing the comment and
4212 injecting HTML into the error page.
4214 - The popen2 module and os.popen* are deprecated. Use the subprocess
4217 - Added an optional credentials argument to SMTPHandler, for use with
4218 SMTP servers which require authentication.
4220 - Patch #1695948: Added optional timeout parameter to SocketHandler.
4222 - Bug #1652788: Minor fix for currentframe.
4224 - Patch #1598415: Added WatchedFileHandler to better support external
4225 log file rotation using e.g. newsyslog or logrotate. This handler is
4226 only useful in Unix/Linux environments.
4228 - Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
4229 (as opposed to the command line) will now write file names ending in
4232 - As specified in RFC 2616, an HTTP response like 2xx indicates that
4233 the client's request was successfully received, understood, and
4234 accepted. Now in these cases no error is raised in urllib (issue
4237 - Bug #1290505: time.strptime's internal cache of locale information
4238 is now properly recreated when the locale is changed.
4240 - Patch #1685563: remove (don't add) duplicate paths in
4241 distutils.MSVCCompiler.
4243 - Added a timeout parameter to the constructor of other protocols
4244 (telnetlib, ftplib, smtplib and poplib). This is second part of the
4245 work started with create_connection() and timeout in httplib, and
4246 closes patch #723312.
4248 - Patch #1676823: Added create_connection() to socket.py, which may be
4249 called with a timeout, and use it from httplib (whose HTTPConnection
4250 and HTTPSConnection now accept an optional timeout).
4252 - Bug #978833: Revert r50844, as it broke _socketobject.dup.
4254 - Bug #1675967: re patterns pickled with Python 2.4 and earlier can
4255 now be unpickled with Python 2.5 and newer.
4257 - Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
4259 - Patch #1273829: os.walk() now has a "followlinks" parameter. If set
4260 to True (which is not the default), it visits symlinks pointing to
4263 - Bug #1681228: the webbrowser module now correctly uses the default
4264 GNOME or KDE browser, depending on whether there is a session of one
4265 of those present. Also, it tries the Windows default browser before
4266 trying Mozilla variants.
4268 - Patch #1339796: add a relpath() function to os.path.
4270 - Patch #1681153: the wave module now closes a file object it opened if
4271 initialization failed.
4273 - Bug #767111: fix long-standing bug in urllib which caused an
4274 AttributeError instead of an IOError when the server's response
4275 didn't contain a valid HTTP status line.
4277 - Patch #957650: "%var%" environment variable references are now
4278 properly expanded in ntpath.expandvars(), also "~user" home
4279 directory references are recognized and handled on Windows.
4281 - Patch #1429539: pdb now correctly initializes the __main__ module
4282 for the debugged script, which means that imports from __main__ work
4285 - The nonobvious commands.getstatus() function is now deprecated.
4287 - Patch #1393667: pdb now has a "run" command which restarts the
4288 debugged Python program, optionally with different arguments.
4290 - Patch #1649190: Adding support for _Bool to ctypes as c_bool.
4292 - Patch #1530482: add pydoc.render_doc() which returns the
4293 documentation for a thing instead of paging it to stdout, which
4296 - Patch #1533909: the timeit module now accepts callables in addition
4297 to strings for the code to time and the setup code. Also added two
4298 convenience functions for instantiating a Timer and calling its
4301 - Patch #1537850: tempfile.NamedTemporaryFile now has a "delete"
4302 parameter which can be set to False to prevent the default
4303 delete-on-close behavior.
4305 - Patch #1581073: add a flag to textwrap that prevents the dropping of
4306 whitespace while wrapping.
4308 - Patch #1603688: ConfigParser.SafeConfigParser now checks values that
4309 are set for invalid interpolation sequences that would lead to
4310 errors on reading back those values.
4312 - Added support for the POSIX.1-2001 (pax) format to
4313 tarfile.py. Extended and cleaned up the test suite. Added a new
4316 - Patch #1449244: Support Unicode strings in
4317 email.message.Message.{set_charset,get_content_charset}.
4319 - Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS"
4320 to pydoc's help keywords.
4322 - Patch #1555098: use str.join() instead of repeated string
4323 concatenation in robotparser.
4325 - Patch #1635454: the csv.DictWriter class now includes the offending
4326 field names in its exception message if you try to write a record
4327 with a dictionary containing fields not in the CSV field names list.
4329 - Patch #1668100: urllib2 now correctly raises URLError instead of
4330 OSError if accessing a local file via the file:// protocol fails.
4332 - Patch #1677862: Require a space or tab after import in .pth files.
4334 - Patch #1192590: Fix pdb's "ignore" and "condition" commands so they
4335 trap the IndexError caused by passing in an invalid breakpoint
4338 - Patch #1599845: Add an option to disable the implicit calls to
4339 server_bind() and server_activate() in the constructors for
4340 TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
4342 - Bug #1531963: Make SocketServer.TCPServer's server_address always be
4343 equal to calling getsockname() on the server's socket. Fixed by
4346 - Patch #742598: Add .timeout attribute to SocketServer that calls
4347 .handle_timeout() when no requests are received.
4349 - Bug #1651235: When a tuple was passed to a ctypes function call,
4350 Python would crash instead of raising an error.
4352 - Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
4353 returned string up to the first NUL character.
4355 - Patch #957003: Implement smtplib.LMTP.
4357 - Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
4359 - Patch #1675424: Added tests for uncovered code in the zipfile
4360 module. The KeyError raised by Zipfile.getinfo for nonexistent
4361 names now has a descriptive message.
4363 - Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
4365 - unittest now verifies more of its assumptions. In particular,
4366 TestCase and TestSuite subclasses (not instances) are no longer
4367 accepted in TestSuite.addTest(). This should cause no
4368 incompatibility since it never made sense with ordinary subclasses
4369 -- the failure just occurred later, with a more cumbersome
4372 - Patch #787789: allow to pass custom TestRunner instances to
4373 unittest's main() function.
4375 - Patches #1550273, #1550272: fix a few bugs in unittest and add a
4376 comprehensive test suite for the module.
4378 - Patch #1001604: glob.glob() now returns unicode filenames if it was
4379 given a unicode argument and os.listdir() returns unicode filenames.
4381 - Patch #1673619: setup.py identifies extension modules it doesn't
4382 know how to build and those it knows how to build but that fail to
4385 - Patch #912410: Replace HTML entity references for attribute values
4388 - Patch #1663234: you can now run doctest on test files and modules
4389 using "python -m doctest [-v] filename ...".
4391 - Patch #1121142: Implement ZipFile.open.
4393 - Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
4395 - Added heapq.merge() for merging sorted input streams.
4397 - Added collections.namedtuple() for assigning field names to tuples.
4399 - Added itertools.izip_longest().
4401 - Have the encoding package's search function dynamically import using
4402 absolute import semantics.
4404 - Patch #1647484: Renamed GzipFile's filename attribute to name.
4406 - Patch #1517891: Mode 'a' for ZipFile now creates the file if it
4409 - Patch #698833: Support file decryption in zipfile.
4411 - Patch #685268: Consider a package's __path__ in imputil.
4413 - Patch #1463026: Support default namespace in XMLGenerator.
4415 - Patch #1571379: Make trace's --ignore-dir facility work in the face
4416 of relative directory names.
4418 - Bug #1600860: Search for shared python library in LIBDIR, not
4419 lib/python/config, on "linux" and "gnu" systems.
4421 - Patch #1652681: tarfile.py: create nonexistent files in append mode
4422 and allow appending to empty files.
4424 - Bug #1124861: Automatically create pipes if GetStdHandle fails in
4427 - Patch #1634778: add missing encoding aliases for iso8859_15 and
4430 - Patch #1638243: the compiler package is now able to correctly
4431 compile a with statement; previously, executing code containing a
4432 with statement compiled by the compiler package crashed the
4435 - Bug #1643943: Fix time.strptime's support for the %U directive.
4437 - Patch #1507247: tarfile.py: use current umask for intermediate
4440 - Patch #1627441: close sockets properly in urllib2.
4442 - Bug #494589: make ntpath.expandvars behave according to its
4445 - Changed platform module API python_version_tuple() to actually
4446 return a tuple (it used to return a list).
4448 - Added new platform module APIs python_branch(), python_revision(),
4449 python_implementation() and linux_distribution().
4451 - Added support for IronPython and Jython to the platform module.
4453 - The sets module has been deprecated. Use the built-in set/frozenset
4456 - Bug #1610795: make ctypes.util.find_library work on BSD systems.
4458 - Fixes for 64-bit Windows: In ctypes.wintypes, correct the
4459 definitions of HANDLE, WPARAM, LPARAM data types. Make
4460 parameterless foreign function calls work.
4462 - The version number of the ctypes package changed to "1.1.0".
4464 - Bug #1627575: logging: Added _open() method to FileHandler which can
4465 be used to reopen files. The FileHandler instance now saves the
4466 encoding (which can be None) in an attribute called "encoding".
4468 - Bug #411881: logging.handlers: bare except clause removed from
4469 SMTPHandler.emit. Now, only ImportError is trapped.
4471 - Bug #411881: logging.handlers: bare except clause removed from
4472 SocketHandler.createSocket. Now, only socket.error is trapped.
4474 - Bug #411881: logging: bare except clause removed from
4475 LogRecord.__init__. Now, only ValueError, TypeError and
4476 AttributeError are trapped.
4478 - Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj
4481 - Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
4483 - Patch #1262036: Prevent TarFiles from being added to themselves
4484 under certain conditions.
4486 - Patch #1230446: tarfile.py: fix ExFileObject so that read() and
4487 tell() work correctly together with readline().
4489 - Patch #1484695: The tarfile module now raises a HeaderError
4490 exception if a buffer given to frombuf() is invalid.
4492 - Bug #1503765: Fix a problem in logging.config with spaces in comma-
4493 separated lists read from logging config files.
4495 - Patch #1604907: Fix problems in logging.handlers caused at logging
4496 shutdown when syslog handlers fail to initialize because of syslogd
4499 - Patch #1608267: fix a race condition in os.makedirs() if the
4500 directory to be created is already there.
4502 - Patch #1610437: fix a tarfile bug with long filename headers.
4504 - Patch #1371075: Make ConfigParser accept optional dict type for
4505 ordering, sorting, etc.
4507 - Bug #1563807: _ctypes built on AIX fails with ld ffi error.
4509 - Bug #1598620: A ctypes Structure cannot contain itself.
4511 - Patch #1070046: Marshal new-style objects like InstanceType in
4514 - cStringIO.truncate(-1) now raises an IOError, like StringIO and
4517 - Patch #1472877: Fix Tix subwidget name resolution.
4519 - Patch #1594554: Always close a tkSimpleDialog on ok(), even if an
4522 - Patch #1538878: Don't make tkSimpleDialog dialogs transient if the
4523 parent window is withdrawn.
4525 - Bug #1597824: return the registered function from atexit.register()
4526 to facilitate usage as a decorator.
4528 - Patch #1360200: Use unmangled_version RPM spec field to deal with
4531 - Patch #1359217: Process 2xx response in an ftplib transfer that
4532 precedes an 1xx response.
4534 - Patch #1355023: support whence argument for GzipFile.seek.
4536 - Patch #1065257: Support passing open files as body in
4537 HTTPConnection.request().
4539 - Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
4540 weren't passing the message factory on to newly created Maildir/MH
4543 - Patch #1514543: mailbox.py: In the Maildir class, report errors if
4544 there's a filename clash instead of possibly losing a message.
4545 (Patch by David Watson.)
4547 - Patch #1514544: Try to ensure that messages/indexes have been
4548 physically written to disk after calling .flush() or
4549 .close(). (Patch by David Watson.)
4551 - Patch #1592250: Add elide argument to Tkinter.Text.search.
4553 - Patch #838546: Make terminal become controlling in pty.fork().
4555 - Patch #1351744: Add askyesnocancel helper for tkMessageBox.
4557 - Patch #1060577: Extract list of RPM files from spec file in
4560 - Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
4562 - Patch #1583880: fix tarfile's problems with long names and posix/
4565 - Bug #1586448: the compiler module now emits the same bytecode for
4566 list comprehensions as the builtin compiler, using the LIST_APPEND
4569 - Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
4570 fix all codecs file wrappers to work correctly with the "with"
4571 statement (bug #1586513).
4573 - Lib/modulefinder.py now handles absolute and relative imports
4576 - Patch #1567274: Support SMTP over TLS.
4578 - Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes
4579 isn't considered as requiring executable stacks.
4581 - ctypes callback functions only support 'fundamental' data types as
4582 result type. Raise an error when something else is used. This is a
4583 partial fix for Bug #1574584.
4585 - Fix turtle so that time.sleep is imported for the entire library.
4586 Allows the demo2 function to be executed on its own instead of only
4587 when the module is run as a script.
4589 - Bug #813342: Start the IDLE subprocess with -Qnew if the parent is
4590 started with that option.
4592 - Bug #1565150: Fix subsecond processing for os.utime on Windows.
4594 - Support for MSVC 8 was added to bdist_wininst.
4596 - Bug #1446043: correctly raise a LookupError if an encoding name
4597 given to encodings.search_function() contains a dot.
4599 - Bug #1560617: in pyclbr, return full module name not only for
4600 classes, but also for functions.
4602 - Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
4603 keep_blank_values and strict_parsing keyword arguments.
4605 - Bug #1566602: correct failure of posixpath unittest when $HOME ends
4608 - Bug #1565661: in webbrowser, split() the command for the default
4609 GNOME browser in case it is a command with args.
4611 - Made the error message for time.strptime when the data and
4612 format do match be more clear.
4614 - Fix a bug in traceback.format_exception_only() that led to an error
4615 being raised when print_exc() was called without an exception set.
4616 In version 2.4, this printed "None", restored that behavior.
4618 - Make webbrowser.BackgroundBrowser usable in Windows (it wasn't
4619 because the close_fds arg to subprocess.Popen is not supported).
4621 - Reverted patch #1504333 to sgmllib because it introduced an infinite
4624 - Patch #1553314: Fix the inspect.py slowdown that was hurting IPython
4625 & SAGE by adding smarter caching in inspect.getmodule()
4627 - Fix missing import of the types module in logging.config.
4629 - Patch #1550886: Fix decimal module context management implementation
4630 to match the localcontext() example from PEP 343.
4632 - Bug #1545341: The 'classifier' keyword argument to the Distutils
4633 setup() function now accepts tuples as well as lists.
4635 - Bug #1541863: uuid.uuid1 failed to generate unique identifiers on
4636 systems with low clock resolution.
4638 - Bug #1531862: Do not close standard file descriptors in subprocess.
4640 - idle: Honor the "Cancel" action in the save dialog (Debian bug
4643 - Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
4644 the first chunk fed to the decoder started with a BOM, but was
4645 longer than 3 bytes.
4647 - The implementation of UnicodeError objects has been simplified
4648 (start and end attributes are now stored directly as Py_ssize_t
4651 - Issue #829951: In the smtplib module, SMTP.starttls() now complies
4652 with RFC 3207 and forgets any knowledge obtained from the server not
4653 obtained from the TLS negotiation itself. Patch contributed by Bill
4656 - Issue #1339: The smtplib.SMTP class has been refactored a bit such
4657 that the SMTP.starttls() caller no longer needs to call ehlo()
4658 beforehand. SMTP.starttls() now raises an exception of the server
4659 does not claim to support starttls. Adds the
4660 SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill
4663 - Patch #1089358: Add signal.siginterrupt, a wrapper around
4669 - Patch #1657: added select.epoll and select.kqueue.
4671 - Patch #1506171: added operator.methodcaller().
4673 - Patch #1826: operator.attrgetter() now supports dotted attribute paths.
4675 - Patch #1957: syslogmodule: Release GIL when calling syslog(3).
4677 - Bug #2112: mmap.error is now a subclass of EnvironmentError and not
4678 a direct EnvironmentError.
4680 - Bug #2111: mmap segfaults when trying to write a block opened with
4683 - Bug #2063: correct order of utime and stime in os.times() result on
4686 - Patch #1736: Fix file name handling of _msi.FCICreate.
4688 - Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
4690 - Issue #1940: make it possible to use curses.filter() before
4691 curses.initscr() as the documentation says.
4693 - Backport of _fileio module from Python 3.0.
4695 - Patch #1087741: mmap.mmap is now a class, not a factory function. It
4696 is also subclassable now.
4698 - Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
4700 - Patch #1663329: added ``os.closerange()`` function to quickly close
4701 a range of file descriptors without considering errors.
4703 - Patch #976880: ``mmap`` objects now have an ``rfind`` method that
4704 works as expected. ``mmap.find`` also takes an optional ``end``
4707 - _winreg's HKEY object has gained __enter__ and __exit__ methods to
4708 support the context manager protocol. The _winreg module also
4709 gained a new function ``ExpandEnvironmentStrings`` to expand
4712 - itertools.starmap() now accepts any iterable input. Previously, it
4713 required the function inputs to be tuples.
4715 - itertools.chain() now has an alternate constructor,
4716 chain.from_iterable().
4718 - Issue #1646: Make socket support TIPC. The socket module now has
4719 support for TIPC under Linux, see http://tipc.sf.net/ for more
4722 - Added interface for Windows' WSAIoctl to socket object and added an
4723 example for a simple network sniffer.
4725 - Bug #1301: Bad assert in _tkinter fixed.
4727 - Added bdist_wininst executable for VS 2008.
4729 - Bug #1604: collections.deque.__init__(iterable) now clears any prior
4730 contents before adding elements from the iterable. This fix brings
4731 the behavior into line with that for list.__init__().
4733 - Added wide char functions to msvcrt module: getwch, getwche, putwch
4734 and ungetwch. The functions accept or return unicode.
4736 - os.access now returns True on Windows for any existing directory.
4738 - Added warnpy3k function to the warnings module.
4740 - Marshal.dumps() now expects exact type matches for int, long, float,
4741 complex, tuple, list, dict, set, and frozenset. Formerly, it would
4742 silently miscode subclasses of those types. Now, it raises a
4745 - Patch #1388440: Add set_completion_display_matches_hook and
4746 get_completion_type to readline.
4748 - Bug #1649098: Avoid declaration of zero-sized array declaration in
4751 - Removed the rgbimg module; been deprecated since Python 2.5.
4753 - Bug #1721309: prevent bsddb module from freeing random memory.
4755 - Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
4756 intended for RECNO databases.
4758 - pybsddb.sf.net Bug #477182: Load the database flags at database open
4759 time so that opening a database previously created with the DB_DUP
4760 or DB_DUPSORT flag set will keep the proper behavior on subsequent
4761 opens. Specifically: dictionary assignment to a DB object will
4762 replace all values for a given key when the database allows
4763 duplicate values. DB users should use DB.put(k, v) when they want
4764 to store duplicates; not DB[k] = v.
4766 - Add the bsddb.db.DBEnv.lock_id_free method.
4768 - Bug #1686475: Support stat'ing open files on Windows again.
4770 - Patch #1185447: binascii.b2a_qp() now correctly quotes binary
4771 characters with ASCII value less than 32. Also, it correctly quotes
4772 dots only if they occur on a single line, as opposed to the previous
4773 behavior of quoting dots if they are the second character of any
4776 - Bug #1622896: fix a rare corner case where the bz2 module raised an
4777 error in spite of a succesful compression.
4779 - Patch #1654417: make operator.{get,set,del}slice use the full range
4782 - Patch #1646728: datetime.fromtimestamp fails with negative
4783 fractional times. With unittest.
4785 - Patch #1490190: posixmodule now includes os.chflags() and
4786 os.lchflags() functions on platforms where the underlying system
4787 calls are available.
4789 - Patch #1494140: Add documentation for the new struct.Struct object.
4791 - Patch #1432399: Support the HCI protocol for bluetooth sockets
4793 - Patch #1657276: Make NETLINK_DNRTMSG conditional.
4795 - Bug #1653736: Complain about keyword arguments to time.isoformat.
4797 - Bug #1486663: don't reject keyword arguments for subclasses of
4800 - Patch #1610575: The struct module now supports the 't' code, for C99
4803 - Patch #1635058: ensure that htonl and friends never accept or return
4804 negative numbers, per the underlying C implementation.
4806 - Patch #1544279: Improve thread-safety of the socket module by moving
4807 the sock_addr_t storage out of the socket object.
4809 - Patch #1019808: fix bug that causes an incorrect error to be
4810 returned when a socket timeout is set and a connection attempt
4813 - Speed up function calls into the math module.
4815 - Bug #1588217: don't parse "= " as a soft line break in binascii's
4816 a2b_qp() function, instead leave it in the string as quopri.decode()
4819 - Bug #1599782: Fix segfault on bsddb.db.DB().type().
4821 - Bug #1567666: Emulate GetFileAttributesExA for Win95.
4823 - Patch #1576166: Support os.utime for directories on Windows NT+.
4825 - Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
4827 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
4828 when encoding non-BMP unicode characters.
4830 - Bug #1556784: allow format strings longer than 127 characters in
4831 datetime's strftime function.
4833 - Fix itertools.count(n) to work with negative numbers again.
4835 - RLIMIT_SBSIZE was added to the resource module where available.
4837 - Bug #1551427: fix a wrong NULL pointer check in the win32 version of
4840 - Bug #1548092: fix curses.tparm seg fault on invalid input.
4842 - Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
4843 other 64-bit LP64 platforms where attr_t is not the same size as a
4844 long. (Contributed by Luke Mewburn.)
4846 - Bug #1550714: fix SystemError from itertools.tee on negative value
4849 - Fixed a few bugs on cjkcodecs:
4850 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
4852 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
4853 codepoints to conform the standard.
4854 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
4857 - Bug #1552726: in readline.c, avoid repeatedly polling in interactive
4858 mode by only placing a timeout on the select() if an input hook has
4859 been defined. This prevents an interactive Python from waking up 10
4860 times per second. Patch by Richard Boulton.
4862 - fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
4865 - Added support for linking the bsddb module against BerkeleyDB 4.5.x,
4868 - Bug #1633621: if curses.resizeterm() or curses.resize_term() is
4869 called, update _curses.LINES, _curses.COLS, curses.LINES and
4872 - Fix an off-by-one bug in locale.strxfrm().
4874 - Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
4876 - Build using system ffi library on arm*-linux*.
4878 - Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
4880 - bsddb module: Fix memory leak when using database cursors on
4881 databases without a DBEnv.
4883 - The sqlite3 module was updated to pysqlite 2.4.1.
4888 - Refactor test_logging to use unittest.
4890 - Refactor test_profile and test_cprofile to use the same code to
4893 - Make test_runpy reentrant by fixing _check_module to clear out any
4894 module being tested. Was causing an error by __import__ doing a
4895 reload on the second run and thus suppressing bytecode recreation.
4897 - Capture socket connection resets and timeouts in test_socket_ssl and
4898 test_urllib2net and raise test.test_support.ResourceDenied.
4900 - Patch #1559413: Fix test_cmd_line if sys.executable contains a
4903 - Added test.test_support.TransientResource which is a context manager
4904 to surround calls to resources that are not guaranteed to work even
4905 if test.test_support.requires says that the resource should exist.
4907 - Added a test for slicing of an exception.
4909 - Added test.test_support.EnvironmentVarGuard. It's a class that
4910 provides a context manager so that one can temporarily set or unset
4911 environment variables.
4913 - Added some tests for modulefinder.
4915 - Converted test_imp to use unittest.
4917 - Fix bsddb test_basics.test06_Transactions to check the version
4920 - test.test_support.catch_warning is a new context manager that can be
4921 used to catch the warnings issued by the warning framework.
4926 - Tools/scripts/reindent.py now creates the backup file using
4927 shutil.copy to preserve user/group and permissions. Added also a
4928 --nobackup option to not create the backup if the user is concerned
4929 regarding this. Check issue 1050828 for more details.
4931 - Tools/scripts/win_add2path.py was added. The simple script modifes
4932 the PATH environment var of the HKCU tree and adds the python bin
4933 and script directory.
4935 - Tools/18n/pygettext.py was added to the list of scripts installed by
4936 Tools/scripts/setup.py (tracker item 642309).
4938 - Added IronPython and Jython support to pybench (part of which was
4941 - Made some minor changes to pybench output to allow the user to see
4942 which Python version is running pybench.
4944 - Added support for the new platform module feature
4945 platform.python_implementation(); this will now be saved in the
4952 - RFE #1765140: Updated documentation on FileHandler and subclasses to
4953 include new optional delay argument.
4955 - Bug #932563: Added section on getting contextual information into
4956 logging output, and added documentation for the new LoggerAdapter
4959 - Bug #1295: Added information about caching of formatted exception
4960 information in the LogRecord by Formatter.format().
4962 - Bug #1637365: add subsection about "__name__ == __main__" to the
4965 - Patch #1698768: updated the "using Python on the Mac" intro.
4967 - Bug #1569057: Document that calling file.next() when the file is
4968 open for writing is undefined.
4970 - Patch #1489771: the syntax rules in Python Reference Manual were
4971 updated to reflect the current Python syntax.
4973 - Patch #1686451: Fix return type for
4974 PySequence_{Count,Index,Fast_GET_SIZE}.
4976 - Patch #1679379: add documentation for fnmatch.translate().
4978 - Bug #1629566: clarify the docs on the return values of parsedate()
4979 and parsedate_tz() in email.utils and rfc822.
4981 - Patch #1671450: add a section about subclassing builtin types to the
4982 "extending and embedding" tutorial.
4984 - Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
4987 - Bug #1565919: document set types in the Language Reference.
4989 - Bug #1546052: clarify that PyString_FromString(AndSize) copies the
4990 string pointed to by its parameter.
4992 - Bug #1566663: remove obsolete example from datetime docs.
4994 - Bug #1541682: Fix example in the "Refcount details" API docs.
4995 Additionally, remove a faulty example showing PySequence_SetItem
4996 applied to a newly created list object and add notes that this isn't
5003 - Patch #1552024: add decorator support to unparse.py demo script.
5005 - Make auto-generated python.vim file list built-ins and exceptions in
5006 alphatbetical order. Makes output more deterministic and easier to
5007 tell if the file is stale or not.
5009 - Bug #1546372: Fixed small bugglet in pybench that caused a missing
5010 file not to get reported properly.
5016 - Have the search path for building extensions follow the declared
5017 order in $CPPFLAGS and $LDFLAGS when adding directories from those
5018 environment variables.
5020 - Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
5021 smaller or equal sizeof(long).
5023 - Bug #1234: Fixed semaphore errors on AIX 5.2
5025 - Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj.
5027 - Removed PCbuild8/ directory and added a new build directory for VS
5028 2005 based on the VS 2008 build directory to PC/VS8.0. The script
5029 PCbuild/vs8to9.py was added to sync changes from PCbuild to
5032 - Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed
5033 PCBuild9/ directory to PCBuild/.
5035 - Bug #1699: Define _BSD_SOURCE only on OpenBSD.
5037 - Bug #1608: use -fwrapv when GCC supports it. This is important,
5038 newer GCC versions may optimize away overflow buffer overflow checks
5039 without this option!
5041 - Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
5043 - Add a FAST_LOOPS build option that speeds-up looping by trading away
5044 periodic threadstate and signal checking in tight loops. By
5045 default, this option is turned-off. It should only be enabled in
5046 debugged, performance critical applications.
5048 - Patch #786737: Allow building in a tree of symlinks pointing to a
5051 - Bug #1737210: Change Manufacturer of Windows installer to PSF.
5053 - Bug #1746880: Correctly install DLLs into system32 folder on Win64.
5055 - Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD
5058 - Stop supporting AtheOS and cause a build error in configure for the
5061 - Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
5062 returned by python-config if Python was built with --enable-shared
5063 because that prevented the shared library from being used.
5065 - Patch #1569798: fix a bug in distutils when building Python from a
5066 directory within sys.exec_prefix.
5068 - Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
5070 - Disable _XOPEN_SOURCE on NetBSD 1.x.
5072 - configure now checks whether gcc supports the PyArg_ParseTuple
5075 - Bug #1578513: Cross compilation was broken by a change to configure.
5076 Repair so that it's back to how it was in 2.4.3.
5078 - Patch #1576954: Update VC6 build directory; remove redundant files
5081 - Bug #1568842: Fix test for uintptr_t.
5083 - Patch #1540470: for OpenBSD 4.0.
5085 - Fix build failure on kfreebsd and on the hurd.
5087 - Fix the build of the library reference in info format.
5089 - Allow Emacs 22 for building the documentation in info format.
5091 - Makefile.pre.in(buildbottest): Run an optional script
5092 pybuildbot.identify to include some information about the build
5099 - Unified naming convention for free lists and their limits. All free
5100 lists in Object/ are named ``free_list``, the counter ``numfree``
5101 and the upper limit is a macro ``PyName_MAXFREELIST`` inside an
5104 - ``PySet_Add()`` can now modify a newly created frozenset. Similarly
5105 to ``PyTuple_SetItem``, it can be used to populate a brand new
5106 frozenset; but it does not steal a reference to the added item.
5108 - Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
5110 - Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format
5111 and _FormatV from Python 3.0. Made PyLong_AsSsize_t and
5112 PyLong_FromSsize_t public functions.
5114 - Patch #1720595: add T_BOOL to the range of structmember types.
5116 - Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
5117 ``PyFloat_GetInfo()`` to the float API.
5119 - Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t#
5120 of w# format code incorrectly truncated the length to an int, even
5121 when PY_SSIZE_T_CLEAN is set. The str.decode method used to return
5122 incorrect results with huge strings.
5124 - Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
5125 Py_TYPE and Py_REFCNT.
5127 - PEP 3123: Provide forward compatibility with Python 3.0, while
5128 keeping backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size,
5129 and PyVarObject_HEAD_INIT.
5131 - Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not
5134 - Patch #1733960: Allow T_LONGLONG to accept ints.
5136 - T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
5138 - Added a new API function ``PyImport_ImportModuleNoBlock``.
5140 - Bug #1637022: Prefix AST symbols with _Py_.
5142 - Fix some leftovers from the conversion from int to Py_ssize_t
5143 (relevant to strings and sequences of more than 2**31 items).
5145 - Make _PyGILState_NoteThreadState() static, it was not used anywhere
5146 outside of pystate.c and should not be necessary.
5148 - ``PyImport_Import`` and ``PyImport_ImportModule`` now always do
5149 absolute imports. In earlier versions they might have used relative
5150 imports under some conditions.
5152 - Added case insensitive comparison methods ``PyOS_stricmp(char*,
5153 char*)`` and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
5155 - Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx
5156 macro so it can be used as an expression.
5162 - Patch #1706: Drop support for Win9x, WinME and NT4. Python now
5163 requires Windows 2000 or greater. The _WINVER and NTDDI_VERSION
5164 macros are set to Win2k for x86/32bit builds and WinXP for AMD64
5167 - Conditionalize definition of _CRT_SECURE_NO_DEPRECATE and
5168 _CRT_NONSTDC_NO_DEPRECATE.
5170 - Bug #1216: Restore support for Visual Studio 2002.
5176 - cfmfile now raises a DeprecationWarning.
5178 - buildtools now raises a DeprecationWarning.
5180 - Removed the macfs module. It had been deprecated since Python 2.5.
5181 This lead to the deprecation of macostools.touched() as it relied
5182 solely on macfs and was a no-op under OS X.
5186 **(For information about older versions, consult the HISTORY file.)**