blob: c690deaeae60af58cf92a3c300dcc2d70dc6014f [file] [log] [blame]
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001+++++++++++
2Python News
3+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Benjamin Petersond1735892009-03-07 18:46:21 +00007What's New in Python 3.1 alpha 2?
8=================================
9
10*Release date: XXX*
11
12Core and Builtins
13-----------------
14
Antoine Pitrou3a652b12009-03-23 18:52:06 +000015- Issue #4688: Add a heuristic so that tuples and dicts containing only
16 untrackable objects are not tracked by the garbage collector. This can
17 reduce the size of collections and therefore the garbage collection overhead
18 on long-running programs, depending on their particular use of datatypes.
19
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000020- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
21 improve its performance. Long divisions and remainder operations
22 are now between 50% and 150% faster.
23
Mark Dickinsonbd792642009-03-18 20:06:12 +000024- Issue #4258: Make it possible to use base 2**30 instead of base
25 2**15 for the internal representation of integers, for performance
26 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
27 --enable-big-digits option to configure, which overrides the
28 default. Add sys.int_info structseq to provide information about
29 the internal format.
30
Mark Dickinson081dfee2009-03-18 14:47:41 +000031- Issue #4474: PyUnicode_FromWideChar now converts characters outside
32 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
33 and sizeof(Py_UNICODE) == 2.
34
Eric Smith8ec90442009-03-14 12:29:34 +000035- Issue #5237: Allow auto-numbered fields in str.format(). For
36 example: '{} {}'.format(1, 2) == '1 2'.
37
Antoine Pitrou652e7072009-03-13 19:25:20 +000038- Issue #5392: when a very low recursion limit was set, the interpreter would
39 abort with a fatal error after the recursion limit was hit twice.
40
Benjamin Petersond1735892009-03-07 18:46:21 +000041Library
42-------
43
Lars Gustäbel42e00912009-03-22 20:34:29 +000044- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
45 forever on incomplete input. That caused tarfile.open() to hang when used
46 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
47 partial bzip2 compressed data.
48
Mark Dickinson79f52032009-03-17 23:12:51 +000049- Issue #2110: Add support for thousands separator and 'n' type
50 specifier to Decimal.__format__
51
Mark Dickinson9c59fe02009-03-17 18:15:08 +000052- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
53 '>' alignment characters.
54
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000055- The error detection code in FileIO.close() could fail to reflect the `errno`
56 value, and report it as -1 instead.
57
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000058- Issue #5016: FileIO.seekable() could return False if the file position
59 was negative when truncated to a C int. Patch by Victor Stinner.
60
Mark Dickinsonae681df2009-03-21 10:26:31 +000061Extension Modules
62-----------------
63
64- Issue #5463: In struct module, remove deprecated overflow wrapping
65 when packing an integer: struct.pack('=L', -1) now raises
66 struct.error instead of returning b'\xff\xff\xff\xff'.
67
Benjamin Petersond1735892009-03-07 18:46:21 +000068
Benjamin Petersona58a6262009-03-07 16:34:40 +000069What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000070================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000071
Benjamin Petersona58a6262009-03-07 16:34:40 +000072*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000073
74Core and Builtins
75-----------------
76
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000077- The io module has been reimplemented in C for speed.
78
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000079- Give dict views an informative __repr__.
80
Eric Smith5e5c0db2009-02-20 14:25:03 +000081- Issue #5247: Improve error message when unknown format codes are
82 used when using str.format() with str, int, and float arguments.
83
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +000084- Issue #5249: time.strftime returned malformed string when format string
85 contained non ascii character on windows.
86
Benjamin Petersonf5b52242009-03-02 23:31:26 +000087- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
88 source has already been decoded into str.
89
Antoine Pitrou79eee6b2009-02-13 14:01:05 +000090- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
91 rotating the object pointer by 4 bits to the right.
92
Mark Dickinson87ec0852009-02-09 17:15:59 +000093- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
94 it now forces its argument to double before testing for infinity.
95
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +000096- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
97 returns a non-number type.
98
Benjamin Peterson87618552009-02-08 15:00:52 +000099- Issue #5182: Removed memoryview.__str__.
100
Mark Dickinsonc008a172009-02-01 13:59:22 +0000101- Issue #1717: Removed builtin cmp() function, dropped tp_compare
102 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000103 the type definition cmpfunc. The tp_compare slot has been renamed
104 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000105
Raymond Hettingere8364232009-02-02 22:55:09 +0000106- Issue 1242657: the __len__() and __length_hint__() calls in several tools
107 were suppressing all exceptions. These include list() and bytearray().
108
Mark Dickinson1124e712009-01-28 21:25:58 +0000109- Issue #4707: round(x, n) now returns an integer if x is an integer.
110 Previously it returned a float.
111
Antoine Pitroub52ec782009-01-25 16:34:23 +0000112- Issue #4753: By enabling a configure option named '--with-computed-gotos'
113 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
114 evaluation loop is compiled with a new dispatch mechanism which gives
115 speedups of up to 20%, depending on the system, on various benchmarks.
116
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000117- Issue #4874: Most builtin decoders now reject unicode input.
118
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000119- Issue #4842: Don't allow trailing 'L' when constructing an integer
120 from a string.
121
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000122- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
123
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000124- Issue #4838: When a module is deallocated, free the memory backing the
125 optional module state data.
126
Mark Dickinson8055afd2009-01-17 10:04:45 +0000127- Issue #4910: Rename nb_long slot to nb_reserved, and change its
128 type to (void *).
129
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000130- Issue #4935: The overflow checking code in the expandtabs() method common
131 to str, bytes and bytearray could be optimized away by the compiler, letting
132 the interpreter segfault instead of raising an error.
133
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000134- Issue #3720: Fix a crash when an iterator modifies its class and removes its
135 __next__ method.
136
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000137- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
138 function no longer attempt to call the __long__ slot to convert an object
139 to an integer. Only the __int__ and __trunc__ slots are examined.
140
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000141- Issue #4893: Use NT threading on CE.
142
Martin v. Löwisec59d042009-01-12 07:59:10 +0000143- Issue #4915: Port sysmodule to Windows CE.
144
Antoine Pitrouab868312009-01-10 15:40:25 +0000145- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
146 common cases are optimized thanks to a dedicated fast path and a moderate
147 amount of loop unrolling.
148
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000149- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
150 collecting the oldest generation) so that allocating lots of objects without
151 destroying them does not show quadratic performance. Based on a proposal by
152 Martin von Löwis at
153 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
154
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000155- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000156 having been closed (for instance, a read() call could return some
157 previously buffered data). Patch by Dmitry Vasiliev.
158
Antoine Pitrou05608432009-01-09 18:53:14 +0000159- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
160 flag to work properly. Furthermore, when specifying -u, the text stdout
161 and stderr streams have line-by-line buffering enabled (the default being
162 to buffer arbitrary chunks of data).
163
Raymond Hettinger35631532009-01-09 03:58:09 +0000164- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
165 instead of ints (reducing its size from 4 to 8 times thereby reducing
166 Python's overall memory).
167
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000168- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
169 an existing .py counterpart, override the co_filename attributes of all
170 code objects if the original filename is obsolete (which can happen if the
171 file has been renamed, moved, or if it is accessed through different paths).
172 Patch by Ziga Seilnacht and Jean-Paul Calderone.
173
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000174- Issue #4580: Fix slicing of memoryviews when the item size is greater than
175 one byte. Also fixes the meaning of len() so that it returns the number of
176 items, rather than the size in bytes.
177
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000178- Issue #4075: Use OutputDebugStringW in Py_FatalError.
179
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000180- Issue #4747: When the terminal does not use utf-8, executing a script with
181 non-ascii characters in its name could fail with a "SyntaxError: None" error.
182
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000183- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000184 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000185
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000186- Issue #3680: Reference cycles created through a dict, set or deque iterator
187 did not get collected.
188
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000189- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
190 where the tp_hash and tp_dict slots are both NULL.
191
Georg Brandlccc47b62008-12-28 11:44:14 +0000192- Issue #4759: None is now allowed as the first argument of
193 bytearray.translate(). It was always allowed for bytes.translate().
194
Skip Montanaro80072cb2008-12-23 03:51:14 +0000195- Added test case to ensure attempts to read from a file opened for writing
196 fail.
197
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000198- Issue #3106: Speedup some comparisons (str/str and int/int).
199
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000200- Issue #2183: Simplify and optimize bytecode for list, dict and set
201 comprehensions. Original patch for list comprehensions by Neal Norwitz.
202
Antoine Pitrou621601a2008-12-17 23:18:19 +0000203- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
204 print elapsed times, not only when some objects are uncollectable /
205 unreachable. Original patch by Neil Schemenauer.
206
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000207- Issue #3439: Add a bit_length method to int.
208
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000209- Issue #2173: When getting device encoding, check that return value of
210 nl_langinfo is not the empty string. This was causing silent build
211 failures on OS X.
212
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000213- Issue #4597: Fixed several opcodes that weren't always propagating
214 exceptions.
215
216- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000217 context manager returns a value that cannot be converted to a bool.
218
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000219- Issue #4445: Replace "sizeof(PyBytesObject)" with
220 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
221 bytes instances. On a typical machine this saves 3 bytes of memory
222 (on average) per allocation of a bytes instance.
223
Christian Heimesa872de52008-12-05 08:26:55 +0000224- Issue #4533: File read operation was dreadfully slow due to a slowly
225 growing read buffer. Fixed by using the same growth rate algorithm as
226 Python 2.x.
227
Antoine Pitrou5504e892008-12-06 21:27:53 +0000228- Issue #4509: Various issues surrounding resize of bytearray objects to
229 which there are buffer exports (e.g. memoryview instances).
230
Georg Brandlf9734072008-12-07 15:30:06 +0000231- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
232 method on file objects with closefd=False. The file descriptor is still
233 kept open but the file object behaves like a closed file. The ``FileIO``
234 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000235
Antoine Pitroubc420402008-12-07 20:14:49 +0000236- Issue #4569: Interpreter crash when mutating a memoryview with an item size
237 larger than 1.
238
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000239- Issue #4748: Lambda generators no longer return a value.
240
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000241- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
242
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000243Library
244-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000245
Antoine Pitrou350370c2009-03-14 00:13:13 +0000246- Issue #1222: locale.format() bug when the thousands separator is a space
247 character.
248
Tarek Ziadé516db942009-03-11 12:52:00 +0000249- Issue #5472: Fixed distutils.test_util tear down. Original patch by
250 Tim Golden.
251
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000252- collections.deque() objects now have a read-only attribute called maxlen.
253
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000254- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
255 it is has been populated and properly configured in order to prevent
256 window flashing.
257
Guilherme Polo56f5be52009-03-07 01:54:57 +0000258- Issue #4792: Prevent a segfault in _tkinter by using the
259 guaranteed to be safe interp argument given to the PythonCmd in place of
260 the Tcl interpreter taken from a PythonCmd_ClientData.
261
262- Issue #5193: Guarantee that tkinter.Text.search returns a string.
263
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000264- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
265 Original patch by Akira Kitada.
266
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000267- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
268
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000269- Issue #5385: Fixed mmap crash after resize failure on windows.
270
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000271- Issue #5179: Fixed subprocess handle leak on failure on windows.
272
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000273- PEP 372: Added collections.OrderedDict().
274
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000275- The _asdict() for method for namedtuples now returns an OrderedDict().
276
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000277- configparser now defaults to using an ordered dictionary.
278
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000279- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
280 import guess_extension`` was used.
281
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000282- Issue #1733986: Fixed mmap crash in accessing elements of second map object
283 with same tagname but larger size than first map. (Windows)
284
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000285- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
286 overrun.
287
Tarek Ziadéf0721222009-02-28 10:16:43 +0000288- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
289 bdist_rpm command.
290
291- Issue #5378: added --quiet option to Distutils bdist_rpm command.
292
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000293- Issue #5052: make Distutils compatible with 2.3 again.
294
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000295- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
296 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000297
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000298- Issue #5287: Add exception handling around findCaller() call to help out
299 IronPython.
300
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000301- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
302 The file was resized to wrong size.
303
304- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
305
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000306- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000307 from the package_data and the data_files metadata.
308
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000309- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000310 support.TempdirManager, to avoid writing in the tests directory.
311
Tarek Ziadé68c50952009-02-13 23:04:17 +0000312- Issue #4524: distutils build_script command failed with --with-suffix=3.
313 Initial patch by Amaury Forgeot d'Arc.
314
Tarek Ziadé811d6242009-02-13 22:26:15 +0000315- Issue #2461: added tests for distutils.util
316
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000317- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
318 which inherited from numbers.py which did not have __slots__ defined. The
319 numbers hierarchy now has its own __slots__ declarations.
320
Antoine Pitroub353c122009-02-11 00:39:14 +0000321- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
322 encoding.
323
Thomas Heller465c8022009-02-10 18:59:04 +0000324- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
325 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
326
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000327- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
328 under NT and OS2. Patch by Philip Jenvey.
329
Brett Cannonbefb14f2009-02-10 02:10:16 +0000330- Issue #5128: Make compileall properly inspect bytecode to determine if needs
331 to be recreated. This avoids a timing hole thanks to the old reliance on the
332 ctime of the files involved.
333
Guilherme Polob681df42009-02-09 22:33:59 +0000334- Issue #5122: Synchronize tk load failure check to prevent a potential
335 deadlock.
336
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000337- Issue #1818: collections.namedtuple() now supports a keyword argument
338 'rename' which lets invalid fieldnames be automatically converted to
339 positional names in the form, _1, _2, ...
340
Guilherme Poloae098992009-02-09 16:44:24 +0000341- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
342
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000343- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
344 public documented method ``ZipImporter.get_filename()``.
345
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000346- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
347 the execution of packages by looking for and executing a ``__main__``
348 submodule when a package name is supplied. Initial patch by Andi
349 Vajda.
350
Guilherme Polo491aee22009-02-06 23:16:11 +0000351- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
352 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
353 Tkapp_Call when calling from a thread different than the one that created
354 the Tcl interpreter. Patch by Robert Hancock.
355
Eric Smith0e5b5622009-02-06 01:32:42 +0000356- Issue #4285: Change sys.version_info to be a named tuple. Patch by
357 Ross Light.
358
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000359- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000360 environment/Makefile. Patch by Douglas Greiman.
361
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000362- Issue #1276768: The verbose option was not used in the code of
363 distutils.file_util and distutils.dir_util.
364
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000365- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000366 --enabled-shared activated. Initial patch by Dave Peterson.
367
Guilherme Polo7f423952009-02-02 21:17:09 +0000368- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
369
Raymond Hettinger85602262009-02-03 04:19:10 +0000370- The shelve module now defaults to pickle protocol 3.
371
Brett Cannone61426e2009-01-30 01:31:34 +0000372- Fix a bug in the trace module where a bytes object from co_lnotab had its
373 items being passed through ord().
374
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000375- Issue #2047: shutil.move() could believe that its destination path was
376 inside its source path if it began with the same letters (e.g. "src" vs.
377 "src.new").
378
Guilherme Polo5f238482009-01-28 14:41:10 +0000379- Added the ttk module. See issue #2983: Ttk support for Tkinter.
380
Raymond Hettinger89e12962009-01-26 02:09:03 +0000381- Removed isSequenceType(), isMappingType, and isNumberType() from the
382 operator module; use the abstract base classes instead. Also removed
383 the repeat() function; use mul() instead.
384
Raymond Hettinger0f055172009-01-27 10:06:09 +0000385- Issue 5021: doctest.testfile() did not create __name__ and
386 collections.namedtuple() relied on __name__ being defined.
387
388- Backport importlib from Python 3.1. Only the import_module() function has
389 been backported to help facilitate transitions from 2.7 to 3.1.
390
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000391- Issue #1885: distutils. When running sdist with --formats=tar,gztar
392 the tar file was overriden by the gztar one.
393
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000394- Issue #4863: distutils.mwerkscompiler has been removed.
395
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000396- Added a new itertools functions: combinations_with_replacement()
397 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000398
Raymond Hettinger30729212009-02-12 06:28:27 +0000399- Issue 5032: added a step argument to itertools.count() and
400 allowed non-integer arguments.
401
Jesse Noller41faa542009-01-25 03:45:53 +0000402- Fix and properly document the multiprocessing module's logging
403 support, expose the internal levels and provide proper usage
404 examples.
405
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000406- Issue #1672332: fix unpickling of subnormal floats, which was
407 producing a ValueError on some platforms.
408
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000409- Issue #3881: Help Tcl to load even when started through the
410 unreadable local symlink to "Program Files" on Vista.
411
Martin v. Löwis59e47792009-01-24 14:10:07 +0000412- Issue #4710: Extract directories properly in the zipfile module;
413 allow adding directories to a zipfile.
414
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000415- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000416 --without-threads argument. When this occurs, _multiprocessing will
417 be disabled, and not compiled.
418
Antoine Pitrou08838b62009-01-21 00:55:13 +0000419- Issue #5008: When a file is opened in append mode with the new IO library,
420 do an explicit seek to the end of file (so that e.g. tell() returns the
421 file size rather than 0). This is consistent with the behaviour of the
422 traditional 2.x file object.
423
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000424- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
425 parameter was set.
426
Mark Dickinson8dd05142009-01-20 20:43:58 +0000427- Issue #4842: Always append a trailing 'L' when pickling longs using
428 pickle protocol 0. When reading, the 'L' is optional.
429
Brett Cannonafccd632009-01-20 02:21:27 +0000430- Add the importlib package.
431
Jesse Noller9a0fc972009-01-18 21:12:58 +0000432- Issue #4301: Patch the logging module to add processName support, remove
433 _check_logger_class from multiprocessing.
434
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000435- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000436 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000437
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000438- Issue #4959: inspect.formatargspec now works for keyword only arguments
439 without defaults.
440
Jesse Noller6214edd2009-01-19 16:23:53 +0000441- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
442 for *nix machines for negative handles and large int handles. Without this check
443 it is possible to segfault the interpreter.
444
Jesse Nollerb0516a62009-01-18 03:11:38 +0000445- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
446 in sharedctypes.py.
447
448- Issue #1225107: inspect.isclass() returned True for instances with a custom
449 __getattr__.
450
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000451- Issue #3826 and #4791: The socket module now closes the underlying socket
452 appropriately when it is being used via socket.makefile() objects
453 rather than delaying the close by waiting for garbage collection to do it.
454
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000455- Issue #1696199: Add collections.Counter() for rapid and convenient
456 counting.
457
Antoine Pitrou308705e2009-01-10 16:22:51 +0000458- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
459
Thomas Heller5e4e4272009-01-08 09:34:20 +0000460- Issue #4867: Fixed a crash in ctypes when passing a string to a
461 function without defining argtypes.
462
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000463- Issue #4272: Add an optional argument to the GzipFile constructor to override
464 the timestamp in the gzip stream. The default value remains the current time.
465 The information can be used by e.g. gunzip when decompressing. Patch by
466 Jacques Frechet.
467
Mark Dickinson315a20a2009-01-04 21:34:18 +0000468- Restore Python 2.3 compatibility for decimal.py.
469
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000470- Issue #3638: Remove functions from _tkinter module level that depend on
471 TkappObject to work with multiple threads.
472
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000473- Issue #4718: Adapt the wsgiref package so that it actually works with
474 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000475 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
476
Raymond Hettinger771ed762009-01-03 19:20:32 +0000477- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
478 to the decimal module.
479
Georg Brandl3a9b0622009-01-03 22:07:57 +0000480- Fractions.from_float() no longer loses precision for integers too big to
481 cast as floats.
482
Mark Dickinsonf9236412009-01-02 23:23:21 +0000483- Issue #4812: add missing underscore prefix to some internal-use-only
484 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
485
Georg Brandl3a9b0622009-01-03 22:07:57 +0000486- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
487 did unnecessary work in the common case where no key function was specified.
488
Georg Brandlb1441c72009-01-03 22:33:39 +0000489- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
490 the function is not a generator.
491
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000492- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
493 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000494
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000495- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000496 function. Original patch by Thomas Heller.
497
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000498- Issue #3767: Convert Tk object to string in tkColorChooser.
499
Martin v. Löwise354d782008-12-29 16:03:04 +0000500- Issue #3248: Allow placing ScrolledText in a PanedWindow.
501
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000502- Issue #4444: Allow assertRaises() to be used as a context handler, so that
503 the code under test can be written inline if more practical.
504
Georg Brandldb7b6b92009-01-01 15:53:14 +0000505- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
506 works as expected in the interactive environment.
507
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000508- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
509 Gabriel Genellina.
510
Antoine Pitrou180a3362008-12-14 16:36:46 +0000511- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
512 boundary.
513
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000514- Issue #4223: inspect.getsource() will now correctly display source code
515 for packages loaded via zipimport (or any other conformant PEP 302
516 loader). Original patch by Alexander Belopolsky.
517
518- Issue #4201: pdb can now access and display source code loaded via
519 zipimport (or any other conformant PEP 302 loader). Original patch by
520 Alexander Belopolsky.
521
522- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
523 302 conformant loader) will now work correctly in most cases (they
524 are still subject to the constraints that exist for all code running
525 from inside a module loaded via a PEP 302 loader and attempting to
526 perform IO operations based on __file__). Original patch by
527 Alexander Belopolsky.
528
529- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
530 allows backporting to maintenance branches. Original patch by
531 Alexander Belopolsky.
532
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000533- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
534 a non-ASCII letter.
535
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000536- Issue #4616: TarFile.utime(): Restore directory times on Windows.
537
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000538- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
539 codec cannot be found. This is for compatibility with the builtin behavior.
540
Facundo Batista708d5812008-12-11 04:20:07 +0000541- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
542 give correct results in the case where one argument is a quiet NaN
543 and the other is a finite number that requires rounding.
544
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000545- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
546 libs.
547
Georg Brandlf9734072008-12-07 15:30:06 +0000548- Added the subprocess.check_call_output() convenience function to get output
549 from a subprocess on success or raise an exception on error.
550
551- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
552 support unusual filenames (such as those containing semi-colons) in
553 Content-Disposition headers.
554
555- Issue #4384: Added logging integration with warnings module using
556 captureWarnings(). This change includes a NullHandler which does nothing;
557 it will be of use to library developers who want to avoid the "No handlers
558 could be found for logger XXX" message which can appear if the library user
559 doesn't configure logging.
560
561- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
562 exception.
563
Georg Brandleee31162008-12-07 15:15:22 +0000564- Issue #4529: fix the parser module's validation of try-except-finally
565 statements.
566
567- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
568 not a malformed option.
569
570- Added the subprocess.check_output() convenience function to get output
571 from a subprocess on success or raise an exception on error.
572
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000573- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
574 the corresponding tests now pass.
575
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000576- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
577 it was calling the wrong open() function.
578
Fred Drake9a0a65b2008-12-04 19:24:50 +0000579- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
580 support unusual filenames (such as those containing semi-colons) in
581 Content-Disposition headers.
582
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000583- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
584 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
585
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000586- Issue #5104: The socket module now raises OverflowError when 16-bit port and
587 protocol numbers are supplied outside the allowed 0-65536 range on bind()
588 and getservbyport().
589
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000590Tools/Demos
591-----------
592
Antoine Pitrou8a681222009-02-07 17:13:31 +0000593- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
594 and make it 2.6-compatible.
595
Guilherme Poloa7d27972009-01-28 16:06:51 +0000596- Ttk demos added in Demo/tkinter/ttk/
597
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000598- Issue #4677: add two list comprehension tests to pybench.
599
Georg Brandlb1441c72009-01-03 22:33:39 +0000600
601Build
602-----
603
Matthias Klose906785c2009-02-22 23:18:38 +0000604- Link the shared python library with $(MODLIBS).
605
Martin v. Löwis11f72102009-02-10 13:13:30 +0000606- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
607
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000608- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
609
Martin v. Löwise97637d2009-01-11 09:45:11 +0000610- Issue #4895: Use _strdup on Windows CE.
611
Georg Brandlb1441c72009-01-03 22:33:39 +0000612- Issue #4472: "configure --enable-shared" now works on OSX
613
614- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
615
616- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
617
618- Issue #4289: Remove Cancel button from AdvancedDlg.
619
620- Issue #1656675: Register a drop handler for .py* files on Windows.
621
622- Issue #4120: Exclude manifest from extension modules in VS2008.
623
624- Issue #4091: Install pythonxy.dll in system32 again.
625
626- Issue #4018: Disable "for me" installations on Vista.
627
628- Issue #3758: Add ``patchcheck`` build target to .PHONY.
629
630- Issue #4204: Fixed module build errors on FreeBSD 4.
631
632
633C-API
634-----
635
Mark Dickinson21776072009-02-10 16:13:25 +0000636- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
637 for negative arguments. Previously, it raised TypeError.
638
Georg Brandlb1441c72009-01-03 22:33:39 +0000639- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
640
641- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
642 the GIL is released, or owned by another thread.
643
644- Issue #4122: On Windows, fix a compilation error when using the
645 Py_UNICODE_ISSPACE macro in an extension module.
646
647
Mark Dickinsone675f082008-12-11 21:56:00 +0000648Extension Modules
649-----------------
650
Gregory P. Smith365a1862009-02-12 07:35:29 +0000651- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
652 supporting objects as input no matter how it was compiled (built in
653 implementations or external openssl library).
654
Mark Dickinson29500f62009-01-15 15:36:10 +0000655- Issue #4397: Fix occasional test_socket failure on OS X.
656
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000657- Issue #4279: Fix build of parsermodule under Cygwin.
658
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000659- Issue #4751: hashlib now releases the GIL when hashing large buffers
660 (with a hardwired threshold of 2048 bytes), allowing better parallelization
661 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
662
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000663- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
664
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000665- Issue #4738: Each zlib object now has a separate lock, allowing to compress
666 or decompress several streams at once on multi-CPU systems. Also, the GIL
667 is now released when computing the CRC of a large buffer. Patch by ebfe.
668
Georg Brandlb1441c72009-01-03 22:33:39 +0000669- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
670
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000671- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
672
Mark Dickinsone675f082008-12-11 21:56:00 +0000673- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
674 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000675
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000676- Issue #4583: array.array would not always prohibit resizing when a buffer
677 has been exported, resulting in an interpreter crash when accessing the
678 buffer.
679
Martin v. Löwis841edad2008-11-30 10:36:49 +0000680
Guilherme Polo9de29af2009-01-28 20:40:48 +0000681Tests
682-----
683
684- Issue #5083: New 'gui' resource for regrtest.
685
686
Brett Cannon7317c1e2008-11-25 19:19:17 +0000687Docs
688----
689
Georg Brandl52b92cc2008-05-25 09:43:03 +0000690
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000691**(For information about older versions, consult the HISTORY file.)**