blob: 21b4a9b993f904e059d20d1061bf56faac981825 [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 Pitrou652e7072009-03-13 19:25:20 +000015- Issue #5392: when a very low recursion limit was set, the interpreter would
16 abort with a fatal error after the recursion limit was hit twice.
17
Benjamin Petersond1735892009-03-07 18:46:21 +000018Library
19-------
20
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000021- The error detection code in FileIO.close() could fail to reflect the `errno`
22 value, and report it as -1 instead.
23
Benjamin Petersond1735892009-03-07 18:46:21 +000024
Benjamin Petersona58a6262009-03-07 16:34:40 +000025What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000026================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000027
Benjamin Petersona58a6262009-03-07 16:34:40 +000028*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000029
30Core and Builtins
31-----------------
32
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000033- The io module has been reimplemented in C for speed.
34
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000035- Give dict views an informative __repr__.
36
Eric Smith5e5c0db2009-02-20 14:25:03 +000037- Issue #5247: Improve error message when unknown format codes are
38 used when using str.format() with str, int, and float arguments.
39
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +000040- Issue #5249: time.strftime returned malformed string when format string
41 contained non ascii character on windows.
42
Benjamin Petersonf5b52242009-03-02 23:31:26 +000043- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
44 source has already been decoded into str.
45
Antoine Pitrou79eee6b2009-02-13 14:01:05 +000046- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
47 rotating the object pointer by 4 bits to the right.
48
Mark Dickinson87ec0852009-02-09 17:15:59 +000049- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
50 it now forces its argument to double before testing for infinity.
51
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +000052- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
53 returns a non-number type.
54
Benjamin Peterson87618552009-02-08 15:00:52 +000055- Issue #5182: Removed memoryview.__str__.
56
Mark Dickinsonc008a172009-02-01 13:59:22 +000057- Issue #1717: Removed builtin cmp() function, dropped tp_compare
58 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +000059 the type definition cmpfunc. The tp_compare slot has been renamed
60 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +000061
Raymond Hettingere8364232009-02-02 22:55:09 +000062- Issue 1242657: the __len__() and __length_hint__() calls in several tools
63 were suppressing all exceptions. These include list() and bytearray().
64
Mark Dickinson1124e712009-01-28 21:25:58 +000065- Issue #4707: round(x, n) now returns an integer if x is an integer.
66 Previously it returned a float.
67
Antoine Pitroub52ec782009-01-25 16:34:23 +000068- Issue #4753: By enabling a configure option named '--with-computed-gotos'
69 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
70 evaluation loop is compiled with a new dispatch mechanism which gives
71 speedups of up to 20%, depending on the system, on various benchmarks.
72
Antoine Pitrou81fabdb2009-01-22 10:11:36 +000073- Issue #4874: Most builtin decoders now reject unicode input.
74
Mark Dickinson9ffc0202009-01-20 20:45:53 +000075- Issue #4842: Don't allow trailing 'L' when constructing an integer
76 from a string.
77
Benjamin Peterson05e782f2009-01-19 15:15:02 +000078- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
79
Antoine Pitroue4bc7f62009-01-17 21:06:43 +000080- Issue #4838: When a module is deallocated, free the memory backing the
81 optional module state data.
82
Mark Dickinson8055afd2009-01-17 10:04:45 +000083- Issue #4910: Rename nb_long slot to nb_reserved, and change its
84 type to (void *).
85
Antoine Pitrou8d4e5052009-01-13 22:59:11 +000086- Issue #4935: The overflow checking code in the expandtabs() method common
87 to str, bytes and bytearray could be optimized away by the compiler, letting
88 the interpreter segfault instead of raising an error.
89
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +000090- Issue #3720: Fix a crash when an iterator modifies its class and removes its
91 __next__ method.
92
Mark Dickinsone5e298f2009-01-12 20:49:19 +000093- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
94 function no longer attempt to call the __long__ slot to convert an object
95 to an integer. Only the __int__ and __trunc__ slots are examined.
96
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +000097- Issue #4893: Use NT threading on CE.
98
Martin v. Löwisec59d042009-01-12 07:59:10 +000099- Issue #4915: Port sysmodule to Windows CE.
100
Antoine Pitrouab868312009-01-10 15:40:25 +0000101- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
102 common cases are optimized thanks to a dedicated fast path and a moderate
103 amount of loop unrolling.
104
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000105- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
106 collecting the oldest generation) so that allocating lots of objects without
107 destroying them does not show quadratic performance. Based on a proposal by
108 Martin von Löwis at
109 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
110
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000111- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000112 having been closed (for instance, a read() call could return some
113 previously buffered data). Patch by Dmitry Vasiliev.
114
Antoine Pitrou05608432009-01-09 18:53:14 +0000115- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
116 flag to work properly. Furthermore, when specifying -u, the text stdout
117 and stderr streams have line-by-line buffering enabled (the default being
118 to buffer arbitrary chunks of data).
119
Raymond Hettinger35631532009-01-09 03:58:09 +0000120- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
121 instead of ints (reducing its size from 4 to 8 times thereby reducing
122 Python's overall memory).
123
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000124- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
125 an existing .py counterpart, override the co_filename attributes of all
126 code objects if the original filename is obsolete (which can happen if the
127 file has been renamed, moved, or if it is accessed through different paths).
128 Patch by Ziga Seilnacht and Jean-Paul Calderone.
129
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000130- Issue #4580: Fix slicing of memoryviews when the item size is greater than
131 one byte. Also fixes the meaning of len() so that it returns the number of
132 items, rather than the size in bytes.
133
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000134- Issue #4075: Use OutputDebugStringW in Py_FatalError.
135
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000136- Issue #4747: When the terminal does not use utf-8, executing a script with
137 non-ascii characters in its name could fail with a "SyntaxError: None" error.
138
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000139- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000140 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000141
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000142- Issue #3680: Reference cycles created through a dict, set or deque iterator
143 did not get collected.
144
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000145- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
146 where the tp_hash and tp_dict slots are both NULL.
147
Georg Brandlccc47b62008-12-28 11:44:14 +0000148- Issue #4759: None is now allowed as the first argument of
149 bytearray.translate(). It was always allowed for bytes.translate().
150
Skip Montanaro80072cb2008-12-23 03:51:14 +0000151- Added test case to ensure attempts to read from a file opened for writing
152 fail.
153
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000154- Issue #3106: Speedup some comparisons (str/str and int/int).
155
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000156- Issue #2183: Simplify and optimize bytecode for list, dict and set
157 comprehensions. Original patch for list comprehensions by Neal Norwitz.
158
Antoine Pitrou621601a2008-12-17 23:18:19 +0000159- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
160 print elapsed times, not only when some objects are uncollectable /
161 unreachable. Original patch by Neil Schemenauer.
162
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000163- Issue #3439: Add a bit_length method to int.
164
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000165- Issue #2173: When getting device encoding, check that return value of
166 nl_langinfo is not the empty string. This was causing silent build
167 failures on OS X.
168
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000169- Issue #4597: Fixed several opcodes that weren't always propagating
170 exceptions.
171
172- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000173 context manager returns a value that cannot be converted to a bool.
174
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000175- Issue #4445: Replace "sizeof(PyBytesObject)" with
176 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
177 bytes instances. On a typical machine this saves 3 bytes of memory
178 (on average) per allocation of a bytes instance.
179
Christian Heimesa872de52008-12-05 08:26:55 +0000180- Issue #4533: File read operation was dreadfully slow due to a slowly
181 growing read buffer. Fixed by using the same growth rate algorithm as
182 Python 2.x.
183
Antoine Pitrou5504e892008-12-06 21:27:53 +0000184- Issue #4509: Various issues surrounding resize of bytearray objects to
185 which there are buffer exports (e.g. memoryview instances).
186
Georg Brandlf9734072008-12-07 15:30:06 +0000187- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
188 method on file objects with closefd=False. The file descriptor is still
189 kept open but the file object behaves like a closed file. The ``FileIO``
190 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000191
Antoine Pitroubc420402008-12-07 20:14:49 +0000192- Issue #4569: Interpreter crash when mutating a memoryview with an item size
193 larger than 1.
194
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000195- Issue #4748: Lambda generators no longer return a value.
196
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000197- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
198
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000199Library
200-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000201
Tarek Ziadé516db942009-03-11 12:52:00 +0000202- Issue #5472: Fixed distutils.test_util tear down. Original patch by
203 Tim Golden.
204
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000205- collections.deque() objects now have a read-only attribute called maxlen.
206
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000207- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
208 it is has been populated and properly configured in order to prevent
209 window flashing.
210
Guilherme Polo56f5be52009-03-07 01:54:57 +0000211- Issue #4792: Prevent a segfault in _tkinter by using the
212 guaranteed to be safe interp argument given to the PythonCmd in place of
213 the Tcl interpreter taken from a PythonCmd_ClientData.
214
215- Issue #5193: Guarantee that tkinter.Text.search returns a string.
216
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000217- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
218 Original patch by Akira Kitada.
219
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000220- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
221
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000222- Issue #5385: Fixed mmap crash after resize failure on windows.
223
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000224- Issue #5179: Fixed subprocess handle leak on failure on windows.
225
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000226- PEP 372: Added collections.OrderedDict().
227
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000228- The _asdict() for method for namedtuples now returns an OrderedDict().
229
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000230- configparser now defaults to using an ordered dictionary.
231
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000232- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
233 import guess_extension`` was used.
234
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000235- Issue #1733986: Fixed mmap crash in accessing elements of second map object
236 with same tagname but larger size than first map. (Windows)
237
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000238- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
239 overrun.
240
Tarek Ziadéf0721222009-02-28 10:16:43 +0000241- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
242 bdist_rpm command.
243
244- Issue #5378: added --quiet option to Distutils bdist_rpm command.
245
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000246- Issue #5052: make Distutils compatible with 2.3 again.
247
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000248- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
249 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000250
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000251- Issue #5287: Add exception handling around findCaller() call to help out
252 IronPython.
253
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000254- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
255 The file was resized to wrong size.
256
257- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
258
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000259- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000260 from the package_data and the data_files metadata.
261
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000262- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000263 support.TempdirManager, to avoid writing in the tests directory.
264
Tarek Ziadé68c50952009-02-13 23:04:17 +0000265- Issue #4524: distutils build_script command failed with --with-suffix=3.
266 Initial patch by Amaury Forgeot d'Arc.
267
Tarek Ziadé811d6242009-02-13 22:26:15 +0000268- Issue #2461: added tests for distutils.util
269
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000270- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
271 which inherited from numbers.py which did not have __slots__ defined. The
272 numbers hierarchy now has its own __slots__ declarations.
273
Antoine Pitroub353c122009-02-11 00:39:14 +0000274- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
275 encoding.
276
Thomas Heller465c8022009-02-10 18:59:04 +0000277- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
278 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
279
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000280- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
281 under NT and OS2. Patch by Philip Jenvey.
282
Brett Cannonbefb14f2009-02-10 02:10:16 +0000283- Issue #5128: Make compileall properly inspect bytecode to determine if needs
284 to be recreated. This avoids a timing hole thanks to the old reliance on the
285 ctime of the files involved.
286
Guilherme Polob681df42009-02-09 22:33:59 +0000287- Issue #5122: Synchronize tk load failure check to prevent a potential
288 deadlock.
289
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000290- Issue #1818: collections.namedtuple() now supports a keyword argument
291 'rename' which lets invalid fieldnames be automatically converted to
292 positional names in the form, _1, _2, ...
293
Guilherme Poloae098992009-02-09 16:44:24 +0000294- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
295
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000296- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
297 public documented method ``ZipImporter.get_filename()``.
298
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000299- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
300 the execution of packages by looking for and executing a ``__main__``
301 submodule when a package name is supplied. Initial patch by Andi
302 Vajda.
303
Guilherme Polo491aee22009-02-06 23:16:11 +0000304- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
305 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
306 Tkapp_Call when calling from a thread different than the one that created
307 the Tcl interpreter. Patch by Robert Hancock.
308
Eric Smith0e5b5622009-02-06 01:32:42 +0000309- Issue #4285: Change sys.version_info to be a named tuple. Patch by
310 Ross Light.
311
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000312- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000313 environment/Makefile. Patch by Douglas Greiman.
314
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000315- Issue #1276768: The verbose option was not used in the code of
316 distutils.file_util and distutils.dir_util.
317
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000318- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000319 --enabled-shared activated. Initial patch by Dave Peterson.
320
Guilherme Polo7f423952009-02-02 21:17:09 +0000321- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
322
Raymond Hettinger85602262009-02-03 04:19:10 +0000323- The shelve module now defaults to pickle protocol 3.
324
Brett Cannone61426e2009-01-30 01:31:34 +0000325- Fix a bug in the trace module where a bytes object from co_lnotab had its
326 items being passed through ord().
327
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000328- Issue #2047: shutil.move() could believe that its destination path was
329 inside its source path if it began with the same letters (e.g. "src" vs.
330 "src.new").
331
Guilherme Polo5f238482009-01-28 14:41:10 +0000332- Added the ttk module. See issue #2983: Ttk support for Tkinter.
333
Raymond Hettinger89e12962009-01-26 02:09:03 +0000334- Removed isSequenceType(), isMappingType, and isNumberType() from the
335 operator module; use the abstract base classes instead. Also removed
336 the repeat() function; use mul() instead.
337
Raymond Hettinger0f055172009-01-27 10:06:09 +0000338- Issue 5021: doctest.testfile() did not create __name__ and
339 collections.namedtuple() relied on __name__ being defined.
340
341- Backport importlib from Python 3.1. Only the import_module() function has
342 been backported to help facilitate transitions from 2.7 to 3.1.
343
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000344- Issue #1885: distutils. When running sdist with --formats=tar,gztar
345 the tar file was overriden by the gztar one.
346
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000347- Issue #4863: distutils.mwerkscompiler has been removed.
348
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000349- Added a new itertools functions: combinations_with_replacement()
350 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000351
Raymond Hettinger30729212009-02-12 06:28:27 +0000352- Issue 5032: added a step argument to itertools.count() and
353 allowed non-integer arguments.
354
Jesse Noller41faa542009-01-25 03:45:53 +0000355- Fix and properly document the multiprocessing module's logging
356 support, expose the internal levels and provide proper usage
357 examples.
358
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000359- Issue #1672332: fix unpickling of subnormal floats, which was
360 producing a ValueError on some platforms.
361
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000362- Issue #3881: Help Tcl to load even when started through the
363 unreadable local symlink to "Program Files" on Vista.
364
Martin v. Löwis59e47792009-01-24 14:10:07 +0000365- Issue #4710: Extract directories properly in the zipfile module;
366 allow adding directories to a zipfile.
367
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000368- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000369 --without-threads argument. When this occurs, _multiprocessing will
370 be disabled, and not compiled.
371
Antoine Pitrou08838b62009-01-21 00:55:13 +0000372- Issue #5008: When a file is opened in append mode with the new IO library,
373 do an explicit seek to the end of file (so that e.g. tell() returns the
374 file size rather than 0). This is consistent with the behaviour of the
375 traditional 2.x file object.
376
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000377- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
378 parameter was set.
379
Mark Dickinson8dd05142009-01-20 20:43:58 +0000380- Issue #4842: Always append a trailing 'L' when pickling longs using
381 pickle protocol 0. When reading, the 'L' is optional.
382
Brett Cannonafccd632009-01-20 02:21:27 +0000383- Add the importlib package.
384
Jesse Noller9a0fc972009-01-18 21:12:58 +0000385- Issue #4301: Patch the logging module to add processName support, remove
386 _check_logger_class from multiprocessing.
387
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000388- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000389 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000390
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000391- Issue #4959: inspect.formatargspec now works for keyword only arguments
392 without defaults.
393
Jesse Noller6214edd2009-01-19 16:23:53 +0000394- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
395 for *nix machines for negative handles and large int handles. Without this check
396 it is possible to segfault the interpreter.
397
Jesse Nollerb0516a62009-01-18 03:11:38 +0000398- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
399 in sharedctypes.py.
400
401- Issue #1225107: inspect.isclass() returned True for instances with a custom
402 __getattr__.
403
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000404- Issue #3826 and #4791: The socket module now closes the underlying socket
405 appropriately when it is being used via socket.makefile() objects
406 rather than delaying the close by waiting for garbage collection to do it.
407
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000408- Issue #1696199: Add collections.Counter() for rapid and convenient
409 counting.
410
Antoine Pitrou308705e2009-01-10 16:22:51 +0000411- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
412
Thomas Heller5e4e4272009-01-08 09:34:20 +0000413- Issue #4867: Fixed a crash in ctypes when passing a string to a
414 function without defining argtypes.
415
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000416- Issue #4272: Add an optional argument to the GzipFile constructor to override
417 the timestamp in the gzip stream. The default value remains the current time.
418 The information can be used by e.g. gunzip when decompressing. Patch by
419 Jacques Frechet.
420
Mark Dickinson315a20a2009-01-04 21:34:18 +0000421- Restore Python 2.3 compatibility for decimal.py.
422
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000423- Issue #3638: Remove functions from _tkinter module level that depend on
424 TkappObject to work with multiple threads.
425
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000426- Issue #4718: Adapt the wsgiref package so that it actually works with
427 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000428 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
429
Raymond Hettinger771ed762009-01-03 19:20:32 +0000430- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
431 to the decimal module.
432
Georg Brandl3a9b0622009-01-03 22:07:57 +0000433- Fractions.from_float() no longer loses precision for integers too big to
434 cast as floats.
435
Mark Dickinsonf9236412009-01-02 23:23:21 +0000436- Issue #4812: add missing underscore prefix to some internal-use-only
437 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
438
Georg Brandl3a9b0622009-01-03 22:07:57 +0000439- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
440 did unnecessary work in the common case where no key function was specified.
441
Georg Brandlb1441c72009-01-03 22:33:39 +0000442- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
443 the function is not a generator.
444
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000445- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
446 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000447
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000448- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000449 function. Original patch by Thomas Heller.
450
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000451- Issue #3767: Convert Tk object to string in tkColorChooser.
452
Martin v. Löwise354d782008-12-29 16:03:04 +0000453- Issue #3248: Allow placing ScrolledText in a PanedWindow.
454
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000455- Issue #4444: Allow assertRaises() to be used as a context handler, so that
456 the code under test can be written inline if more practical.
457
Georg Brandldb7b6b92009-01-01 15:53:14 +0000458- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
459 works as expected in the interactive environment.
460
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000461- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
462 Gabriel Genellina.
463
Antoine Pitrou180a3362008-12-14 16:36:46 +0000464- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
465 boundary.
466
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000467- Issue #4223: inspect.getsource() will now correctly display source code
468 for packages loaded via zipimport (or any other conformant PEP 302
469 loader). Original patch by Alexander Belopolsky.
470
471- Issue #4201: pdb can now access and display source code loaded via
472 zipimport (or any other conformant PEP 302 loader). Original patch by
473 Alexander Belopolsky.
474
475- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
476 302 conformant loader) will now work correctly in most cases (they
477 are still subject to the constraints that exist for all code running
478 from inside a module loaded via a PEP 302 loader and attempting to
479 perform IO operations based on __file__). Original patch by
480 Alexander Belopolsky.
481
482- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
483 allows backporting to maintenance branches. Original patch by
484 Alexander Belopolsky.
485
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000486- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
487 a non-ASCII letter.
488
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000489- Issue #4616: TarFile.utime(): Restore directory times on Windows.
490
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000491- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
492 codec cannot be found. This is for compatibility with the builtin behavior.
493
Facundo Batista708d5812008-12-11 04:20:07 +0000494- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
495 give correct results in the case where one argument is a quiet NaN
496 and the other is a finite number that requires rounding.
497
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000498- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
499 libs.
500
Georg Brandlf9734072008-12-07 15:30:06 +0000501- Added the subprocess.check_call_output() convenience function to get output
502 from a subprocess on success or raise an exception on error.
503
504- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
505 support unusual filenames (such as those containing semi-colons) in
506 Content-Disposition headers.
507
508- Issue #4384: Added logging integration with warnings module using
509 captureWarnings(). This change includes a NullHandler which does nothing;
510 it will be of use to library developers who want to avoid the "No handlers
511 could be found for logger XXX" message which can appear if the library user
512 doesn't configure logging.
513
514- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
515 exception.
516
Georg Brandleee31162008-12-07 15:15:22 +0000517- Issue #4529: fix the parser module's validation of try-except-finally
518 statements.
519
520- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
521 not a malformed option.
522
523- Added the subprocess.check_output() convenience function to get output
524 from a subprocess on success or raise an exception on error.
525
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000526- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
527 the corresponding tests now pass.
528
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000529- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
530 it was calling the wrong open() function.
531
Fred Drake9a0a65b2008-12-04 19:24:50 +0000532- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
533 support unusual filenames (such as those containing semi-colons) in
534 Content-Disposition headers.
535
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000536- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
537 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
538
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000539- Issue #5104: The socket module now raises OverflowError when 16-bit port and
540 protocol numbers are supplied outside the allowed 0-65536 range on bind()
541 and getservbyport().
542
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000543Tools/Demos
544-----------
545
Antoine Pitrou8a681222009-02-07 17:13:31 +0000546- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
547 and make it 2.6-compatible.
548
Guilherme Poloa7d27972009-01-28 16:06:51 +0000549- Ttk demos added in Demo/tkinter/ttk/
550
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000551- Issue #4677: add two list comprehension tests to pybench.
552
Georg Brandlb1441c72009-01-03 22:33:39 +0000553
554Build
555-----
556
Matthias Klose906785c2009-02-22 23:18:38 +0000557- Link the shared python library with $(MODLIBS).
558
Martin v. Löwis11f72102009-02-10 13:13:30 +0000559- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
560
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000561- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
562
Martin v. Löwise97637d2009-01-11 09:45:11 +0000563- Issue #4895: Use _strdup on Windows CE.
564
Georg Brandlb1441c72009-01-03 22:33:39 +0000565- Issue #4472: "configure --enable-shared" now works on OSX
566
567- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
568
569- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
570
571- Issue #4289: Remove Cancel button from AdvancedDlg.
572
573- Issue #1656675: Register a drop handler for .py* files on Windows.
574
575- Issue #4120: Exclude manifest from extension modules in VS2008.
576
577- Issue #4091: Install pythonxy.dll in system32 again.
578
579- Issue #4018: Disable "for me" installations on Vista.
580
581- Issue #3758: Add ``patchcheck`` build target to .PHONY.
582
583- Issue #4204: Fixed module build errors on FreeBSD 4.
584
585
586C-API
587-----
588
Mark Dickinson21776072009-02-10 16:13:25 +0000589- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
590 for negative arguments. Previously, it raised TypeError.
591
Georg Brandlb1441c72009-01-03 22:33:39 +0000592- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
593
594- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
595 the GIL is released, or owned by another thread.
596
597- Issue #4122: On Windows, fix a compilation error when using the
598 Py_UNICODE_ISSPACE macro in an extension module.
599
600
Mark Dickinsone675f082008-12-11 21:56:00 +0000601Extension Modules
602-----------------
603
Gregory P. Smith365a1862009-02-12 07:35:29 +0000604- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
605 supporting objects as input no matter how it was compiled (built in
606 implementations or external openssl library).
607
Mark Dickinson29500f62009-01-15 15:36:10 +0000608- Issue #4397: Fix occasional test_socket failure on OS X.
609
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000610- Issue #4279: Fix build of parsermodule under Cygwin.
611
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000612- Issue #4751: hashlib now releases the GIL when hashing large buffers
613 (with a hardwired threshold of 2048 bytes), allowing better parallelization
614 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
615
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000616- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
617
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000618- Issue #4738: Each zlib object now has a separate lock, allowing to compress
619 or decompress several streams at once on multi-CPU systems. Also, the GIL
620 is now released when computing the CRC of a large buffer. Patch by ebfe.
621
Georg Brandlb1441c72009-01-03 22:33:39 +0000622- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
623
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000624- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
625
Mark Dickinsone675f082008-12-11 21:56:00 +0000626- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
627 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000628
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000629- Issue #4583: array.array would not always prohibit resizing when a buffer
630 has been exported, resulting in an interpreter crash when accessing the
631 buffer.
632
Martin v. Löwis841edad2008-11-30 10:36:49 +0000633
Guilherme Polo9de29af2009-01-28 20:40:48 +0000634Tests
635-----
636
637- Issue #5083: New 'gui' resource for regrtest.
638
639
Brett Cannon7317c1e2008-11-25 19:19:17 +0000640Docs
641----
642
Georg Brandl52b92cc2008-05-25 09:43:03 +0000643
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000644**(For information about older versions, consult the HISTORY file.)**