blob: f2888be1f3b1191ed7b4ca452b3da88658baacb3 [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
Benjamin Peterson09832742009-03-26 17:15:46 +000015- Issue #5126: str.isprintable() returned False for space characters.
16
Antoine Pitrou3a652b12009-03-23 18:52:06 +000017- Issue #4688: Add a heuristic so that tuples and dicts containing only
18 untrackable objects are not tracked by the garbage collector. This can
19 reduce the size of collections and therefore the garbage collection overhead
20 on long-running programs, depending on their particular use of datatypes.
21
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000022- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
23 improve its performance. Long divisions and remainder operations
24 are now between 50% and 150% faster.
25
Mark Dickinsonbd792642009-03-18 20:06:12 +000026- Issue #4258: Make it possible to use base 2**30 instead of base
27 2**15 for the internal representation of integers, for performance
28 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
29 --enable-big-digits option to configure, which overrides the
30 default. Add sys.int_info structseq to provide information about
31 the internal format.
32
Mark Dickinson081dfee2009-03-18 14:47:41 +000033- Issue #4474: PyUnicode_FromWideChar now converts characters outside
34 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
35 and sizeof(Py_UNICODE) == 2.
36
Eric Smith8ec90442009-03-14 12:29:34 +000037- Issue #5237: Allow auto-numbered fields in str.format(). For
38 example: '{} {}'.format(1, 2) == '1 2'.
39
Antoine Pitrou652e7072009-03-13 19:25:20 +000040- Issue #5392: when a very low recursion limit was set, the interpreter would
41 abort with a fatal error after the recursion limit was hit twice.
42
Benjamin Petersond1735892009-03-07 18:46:21 +000043Library
44-------
45
Brett Cannon7f6b4f82009-03-30 21:30:26 +000046- Issue #5236: Change time.strptime() to only take strings. Didn't work with
47 bytes already but the failure was non-obvious.
48
Jesse Noller7af4ef82009-03-30 16:47:15 +000049- Issue #5177: Multiprocessing's SocketListener class now uses
50 socket.SO_REUSEADDR on all connections so that the user no longer needs
51 to wait 120 seconds for the socket to expire.
52
Benjamin Peterson48e24782009-03-29 13:02:52 +000053- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
54
Antoine Pitrou66994e12009-03-29 00:45:26 +000055- Issue #1174606: Calling read() without arguments of an unbounded file
56 (typically /dev/zero under Unix) could crash the interpreter.
57
Benjamin Peterson59406a92009-03-26 17:10:29 +000058- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
59 io.BufferedRandom have been deprecated for removal in Python 3.2.
60
Lars Gustäbel42e00912009-03-22 20:34:29 +000061- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
62 forever on incomplete input. That caused tarfile.open() to hang when used
63 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
64 partial bzip2 compressed data.
65
Mark Dickinson79f52032009-03-17 23:12:51 +000066- Issue #2110: Add support for thousands separator and 'n' type
67 specifier to Decimal.__format__
68
Mark Dickinson9c59fe02009-03-17 18:15:08 +000069- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
70 '>' alignment characters.
71
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000072- The error detection code in FileIO.close() could fail to reflect the `errno`
73 value, and report it as -1 instead.
74
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000075- Issue #5016: FileIO.seekable() could return False if the file position
76 was negative when truncated to a C int. Patch by Victor Stinner.
77
Mark Dickinsonae681df2009-03-21 10:26:31 +000078Extension Modules
79-----------------
80
81- Issue #5463: In struct module, remove deprecated overflow wrapping
82 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +000083 struct.error instead of returning b'\xff\xff\xff\xff'. The
84 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
85 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +000086
Benjamin Petersond1735892009-03-07 18:46:21 +000087
Benjamin Petersona58a6262009-03-07 16:34:40 +000088What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +000089================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000090
Benjamin Petersona58a6262009-03-07 16:34:40 +000091*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000092
93Core and Builtins
94-----------------
95
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +000096- The io module has been reimplemented in C for speed.
97
Raymond Hettingerb0d56af2009-03-03 10:52:49 +000098- Give dict views an informative __repr__.
99
Eric Smith5e5c0db2009-02-20 14:25:03 +0000100- Issue #5247: Improve error message when unknown format codes are
101 used when using str.format() with str, int, and float arguments.
102
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000103- Issue #5249: time.strftime returned malformed string when format string
104 contained non ascii character on windows.
105
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000106- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
107 source has already been decoded into str.
108
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000109- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
110 rotating the object pointer by 4 bits to the right.
111
Mark Dickinson87ec0852009-02-09 17:15:59 +0000112- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
113 it now forces its argument to double before testing for infinity.
114
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000115- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
116 returns a non-number type.
117
Benjamin Peterson87618552009-02-08 15:00:52 +0000118- Issue #5182: Removed memoryview.__str__.
119
Mark Dickinsonc008a172009-02-01 13:59:22 +0000120- Issue #1717: Removed builtin cmp() function, dropped tp_compare
121 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000122 the type definition cmpfunc. The tp_compare slot has been renamed
123 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000124
Raymond Hettingere8364232009-02-02 22:55:09 +0000125- Issue 1242657: the __len__() and __length_hint__() calls in several tools
126 were suppressing all exceptions. These include list() and bytearray().
127
Mark Dickinson1124e712009-01-28 21:25:58 +0000128- Issue #4707: round(x, n) now returns an integer if x is an integer.
129 Previously it returned a float.
130
Antoine Pitroub52ec782009-01-25 16:34:23 +0000131- Issue #4753: By enabling a configure option named '--with-computed-gotos'
132 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
133 evaluation loop is compiled with a new dispatch mechanism which gives
134 speedups of up to 20%, depending on the system, on various benchmarks.
135
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000136- Issue #4874: Most builtin decoders now reject unicode input.
137
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000138- Issue #4842: Don't allow trailing 'L' when constructing an integer
139 from a string.
140
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000141- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
142
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000143- Issue #4838: When a module is deallocated, free the memory backing the
144 optional module state data.
145
Mark Dickinson8055afd2009-01-17 10:04:45 +0000146- Issue #4910: Rename nb_long slot to nb_reserved, and change its
147 type to (void *).
148
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000149- Issue #4935: The overflow checking code in the expandtabs() method common
150 to str, bytes and bytearray could be optimized away by the compiler, letting
151 the interpreter segfault instead of raising an error.
152
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000153- Issue #3720: Fix a crash when an iterator modifies its class and removes its
154 __next__ method.
155
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000156- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
157 function no longer attempt to call the __long__ slot to convert an object
158 to an integer. Only the __int__ and __trunc__ slots are examined.
159
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000160- Issue #4893: Use NT threading on CE.
161
Martin v. Löwisec59d042009-01-12 07:59:10 +0000162- Issue #4915: Port sysmodule to Windows CE.
163
Antoine Pitrouab868312009-01-10 15:40:25 +0000164- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
165 common cases are optimized thanks to a dedicated fast path and a moderate
166 amount of loop unrolling.
167
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000168- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
169 collecting the oldest generation) so that allocating lots of objects without
170 destroying them does not show quadratic performance. Based on a proposal by
171 Martin von Löwis at
172 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
173
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000174- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000175 having been closed (for instance, a read() call could return some
176 previously buffered data). Patch by Dmitry Vasiliev.
177
Antoine Pitrou05608432009-01-09 18:53:14 +0000178- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
179 flag to work properly. Furthermore, when specifying -u, the text stdout
180 and stderr streams have line-by-line buffering enabled (the default being
181 to buffer arbitrary chunks of data).
182
Raymond Hettinger35631532009-01-09 03:58:09 +0000183- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
184 instead of ints (reducing its size from 4 to 8 times thereby reducing
185 Python's overall memory).
186
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000187- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
188 an existing .py counterpart, override the co_filename attributes of all
189 code objects if the original filename is obsolete (which can happen if the
190 file has been renamed, moved, or if it is accessed through different paths).
191 Patch by Ziga Seilnacht and Jean-Paul Calderone.
192
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000193- Issue #4580: Fix slicing of memoryviews when the item size is greater than
194 one byte. Also fixes the meaning of len() so that it returns the number of
195 items, rather than the size in bytes.
196
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000197- Issue #4075: Use OutputDebugStringW in Py_FatalError.
198
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000199- Issue #4747: When the terminal does not use utf-8, executing a script with
200 non-ascii characters in its name could fail with a "SyntaxError: None" error.
201
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000202- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000203 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000204
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000205- Issue #3680: Reference cycles created through a dict, set or deque iterator
206 did not get collected.
207
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000208- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
209 where the tp_hash and tp_dict slots are both NULL.
210
Georg Brandlccc47b62008-12-28 11:44:14 +0000211- Issue #4759: None is now allowed as the first argument of
212 bytearray.translate(). It was always allowed for bytes.translate().
213
Skip Montanaro80072cb2008-12-23 03:51:14 +0000214- Added test case to ensure attempts to read from a file opened for writing
215 fail.
216
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000217- Issue #3106: Speedup some comparisons (str/str and int/int).
218
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000219- Issue #2183: Simplify and optimize bytecode for list, dict and set
220 comprehensions. Original patch for list comprehensions by Neal Norwitz.
221
Antoine Pitrou621601a2008-12-17 23:18:19 +0000222- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
223 print elapsed times, not only when some objects are uncollectable /
224 unreachable. Original patch by Neil Schemenauer.
225
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000226- Issue #3439: Add a bit_length method to int.
227
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000228- Issue #2173: When getting device encoding, check that return value of
229 nl_langinfo is not the empty string. This was causing silent build
230 failures on OS X.
231
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000232- Issue #4597: Fixed several opcodes that weren't always propagating
233 exceptions.
234
235- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000236 context manager returns a value that cannot be converted to a bool.
237
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000238- Issue #4445: Replace "sizeof(PyBytesObject)" with
239 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
240 bytes instances. On a typical machine this saves 3 bytes of memory
241 (on average) per allocation of a bytes instance.
242
Christian Heimesa872de52008-12-05 08:26:55 +0000243- Issue #4533: File read operation was dreadfully slow due to a slowly
244 growing read buffer. Fixed by using the same growth rate algorithm as
245 Python 2.x.
246
Antoine Pitrou5504e892008-12-06 21:27:53 +0000247- Issue #4509: Various issues surrounding resize of bytearray objects to
248 which there are buffer exports (e.g. memoryview instances).
249
Georg Brandlf9734072008-12-07 15:30:06 +0000250- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
251 method on file objects with closefd=False. The file descriptor is still
252 kept open but the file object behaves like a closed file. The ``FileIO``
253 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000254
Antoine Pitroubc420402008-12-07 20:14:49 +0000255- Issue #4569: Interpreter crash when mutating a memoryview with an item size
256 larger than 1.
257
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000258- Issue #4748: Lambda generators no longer return a value.
259
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000260- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
261
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000262Library
263-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000264
Antoine Pitrou350370c2009-03-14 00:13:13 +0000265- Issue #1222: locale.format() bug when the thousands separator is a space
266 character.
267
Tarek Ziadé516db942009-03-11 12:52:00 +0000268- Issue #5472: Fixed distutils.test_util tear down. Original patch by
269 Tim Golden.
270
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000271- collections.deque() objects now have a read-only attribute called maxlen.
272
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000273- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
274 it is has been populated and properly configured in order to prevent
275 window flashing.
276
Guilherme Polo56f5be52009-03-07 01:54:57 +0000277- Issue #4792: Prevent a segfault in _tkinter by using the
278 guaranteed to be safe interp argument given to the PythonCmd in place of
279 the Tcl interpreter taken from a PythonCmd_ClientData.
280
281- Issue #5193: Guarantee that tkinter.Text.search returns a string.
282
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000283- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
284 Original patch by Akira Kitada.
285
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000286- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
287
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000288- Issue #5385: Fixed mmap crash after resize failure on windows.
289
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000290- Issue #5179: Fixed subprocess handle leak on failure on windows.
291
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000292- PEP 372: Added collections.OrderedDict().
293
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000294- The _asdict() for method for namedtuples now returns an OrderedDict().
295
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000296- configparser now defaults to using an ordered dictionary.
297
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000298- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
299 import guess_extension`` was used.
300
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000301- Issue #1733986: Fixed mmap crash in accessing elements of second map object
302 with same tagname but larger size than first map. (Windows)
303
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000304- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
305 overrun.
306
Tarek Ziadéf0721222009-02-28 10:16:43 +0000307- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
308 bdist_rpm command.
309
310- Issue #5378: added --quiet option to Distutils bdist_rpm command.
311
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000312- Issue #5052: make Distutils compatible with 2.3 again.
313
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000314- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
315 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000316
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000317- Issue #5287: Add exception handling around findCaller() call to help out
318 IronPython.
319
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000320- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
321 The file was resized to wrong size.
322
323- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
324
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000325- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000326 from the package_data and the data_files metadata.
327
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000328- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000329 support.TempdirManager, to avoid writing in the tests directory.
330
Tarek Ziadé68c50952009-02-13 23:04:17 +0000331- Issue #4524: distutils build_script command failed with --with-suffix=3.
332 Initial patch by Amaury Forgeot d'Arc.
333
Tarek Ziadé811d6242009-02-13 22:26:15 +0000334- Issue #2461: added tests for distutils.util
335
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000336- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
337 which inherited from numbers.py which did not have __slots__ defined. The
338 numbers hierarchy now has its own __slots__ declarations.
339
Antoine Pitroub353c122009-02-11 00:39:14 +0000340- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
341 encoding.
342
Thomas Heller465c8022009-02-10 18:59:04 +0000343- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
344 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
345
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000346- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
347 under NT and OS2. Patch by Philip Jenvey.
348
Brett Cannonbefb14f2009-02-10 02:10:16 +0000349- Issue #5128: Make compileall properly inspect bytecode to determine if needs
350 to be recreated. This avoids a timing hole thanks to the old reliance on the
351 ctime of the files involved.
352
Guilherme Polob681df42009-02-09 22:33:59 +0000353- Issue #5122: Synchronize tk load failure check to prevent a potential
354 deadlock.
355
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000356- Issue #1818: collections.namedtuple() now supports a keyword argument
357 'rename' which lets invalid fieldnames be automatically converted to
358 positional names in the form, _1, _2, ...
359
Guilherme Poloae098992009-02-09 16:44:24 +0000360- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
361
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000362- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
363 public documented method ``ZipImporter.get_filename()``.
364
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000365- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
366 the execution of packages by looking for and executing a ``__main__``
367 submodule when a package name is supplied. Initial patch by Andi
368 Vajda.
369
Guilherme Polo491aee22009-02-06 23:16:11 +0000370- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
371 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
372 Tkapp_Call when calling from a thread different than the one that created
373 the Tcl interpreter. Patch by Robert Hancock.
374
Eric Smith0e5b5622009-02-06 01:32:42 +0000375- Issue #4285: Change sys.version_info to be a named tuple. Patch by
376 Ross Light.
377
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000378- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000379 environment/Makefile. Patch by Douglas Greiman.
380
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000381- Issue #1276768: The verbose option was not used in the code of
382 distutils.file_util and distutils.dir_util.
383
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000384- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000385 --enabled-shared activated. Initial patch by Dave Peterson.
386
Guilherme Polo7f423952009-02-02 21:17:09 +0000387- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
388
Raymond Hettinger85602262009-02-03 04:19:10 +0000389- The shelve module now defaults to pickle protocol 3.
390
Brett Cannone61426e2009-01-30 01:31:34 +0000391- Fix a bug in the trace module where a bytes object from co_lnotab had its
392 items being passed through ord().
393
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000394- Issue #2047: shutil.move() could believe that its destination path was
395 inside its source path if it began with the same letters (e.g. "src" vs.
396 "src.new").
397
Guilherme Polo5f238482009-01-28 14:41:10 +0000398- Added the ttk module. See issue #2983: Ttk support for Tkinter.
399
Raymond Hettinger89e12962009-01-26 02:09:03 +0000400- Removed isSequenceType(), isMappingType, and isNumberType() from the
401 operator module; use the abstract base classes instead. Also removed
402 the repeat() function; use mul() instead.
403
Raymond Hettinger0f055172009-01-27 10:06:09 +0000404- Issue 5021: doctest.testfile() did not create __name__ and
405 collections.namedtuple() relied on __name__ being defined.
406
407- Backport importlib from Python 3.1. Only the import_module() function has
408 been backported to help facilitate transitions from 2.7 to 3.1.
409
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000410- Issue #1885: distutils. When running sdist with --formats=tar,gztar
411 the tar file was overriden by the gztar one.
412
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000413- Issue #4863: distutils.mwerkscompiler has been removed.
414
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000415- Added a new itertools functions: combinations_with_replacement()
416 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000417
Raymond Hettinger30729212009-02-12 06:28:27 +0000418- Issue 5032: added a step argument to itertools.count() and
419 allowed non-integer arguments.
420
Jesse Noller41faa542009-01-25 03:45:53 +0000421- Fix and properly document the multiprocessing module's logging
422 support, expose the internal levels and provide proper usage
423 examples.
424
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000425- Issue #1672332: fix unpickling of subnormal floats, which was
426 producing a ValueError on some platforms.
427
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000428- Issue #3881: Help Tcl to load even when started through the
429 unreadable local symlink to "Program Files" on Vista.
430
Martin v. Löwis59e47792009-01-24 14:10:07 +0000431- Issue #4710: Extract directories properly in the zipfile module;
432 allow adding directories to a zipfile.
433
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000434- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000435 --without-threads argument. When this occurs, _multiprocessing will
436 be disabled, and not compiled.
437
Antoine Pitrou08838b62009-01-21 00:55:13 +0000438- Issue #5008: When a file is opened in append mode with the new IO library,
439 do an explicit seek to the end of file (so that e.g. tell() returns the
440 file size rather than 0). This is consistent with the behaviour of the
441 traditional 2.x file object.
442
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000443- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
444 parameter was set.
445
Mark Dickinson8dd05142009-01-20 20:43:58 +0000446- Issue #4842: Always append a trailing 'L' when pickling longs using
447 pickle protocol 0. When reading, the 'L' is optional.
448
Brett Cannonafccd632009-01-20 02:21:27 +0000449- Add the importlib package.
450
Jesse Noller9a0fc972009-01-18 21:12:58 +0000451- Issue #4301: Patch the logging module to add processName support, remove
452 _check_logger_class from multiprocessing.
453
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000454- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000455 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000456
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000457- Issue #4959: inspect.formatargspec now works for keyword only arguments
458 without defaults.
459
Jesse Noller6214edd2009-01-19 16:23:53 +0000460- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
461 for *nix machines for negative handles and large int handles. Without this check
462 it is possible to segfault the interpreter.
463
Jesse Nollerb0516a62009-01-18 03:11:38 +0000464- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
465 in sharedctypes.py.
466
467- Issue #1225107: inspect.isclass() returned True for instances with a custom
468 __getattr__.
469
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000470- Issue #3826 and #4791: The socket module now closes the underlying socket
471 appropriately when it is being used via socket.makefile() objects
472 rather than delaying the close by waiting for garbage collection to do it.
473
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000474- Issue #1696199: Add collections.Counter() for rapid and convenient
475 counting.
476
Antoine Pitrou308705e2009-01-10 16:22:51 +0000477- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
478
Thomas Heller5e4e4272009-01-08 09:34:20 +0000479- Issue #4867: Fixed a crash in ctypes when passing a string to a
480 function without defining argtypes.
481
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000482- Issue #4272: Add an optional argument to the GzipFile constructor to override
483 the timestamp in the gzip stream. The default value remains the current time.
484 The information can be used by e.g. gunzip when decompressing. Patch by
485 Jacques Frechet.
486
Mark Dickinson315a20a2009-01-04 21:34:18 +0000487- Restore Python 2.3 compatibility for decimal.py.
488
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000489- Issue #3638: Remove functions from _tkinter module level that depend on
490 TkappObject to work with multiple threads.
491
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000492- Issue #4718: Adapt the wsgiref package so that it actually works with
493 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000494 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
495
Raymond Hettinger771ed762009-01-03 19:20:32 +0000496- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
497 to the decimal module.
498
Georg Brandl3a9b0622009-01-03 22:07:57 +0000499- Fractions.from_float() no longer loses precision for integers too big to
500 cast as floats.
501
Mark Dickinsonf9236412009-01-02 23:23:21 +0000502- Issue #4812: add missing underscore prefix to some internal-use-only
503 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
504
Georg Brandl3a9b0622009-01-03 22:07:57 +0000505- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
506 did unnecessary work in the common case where no key function was specified.
507
Georg Brandlb1441c72009-01-03 22:33:39 +0000508- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
509 the function is not a generator.
510
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000511- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
512 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000513
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000514- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000515 function. Original patch by Thomas Heller.
516
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000517- Issue #3767: Convert Tk object to string in tkColorChooser.
518
Martin v. Löwise354d782008-12-29 16:03:04 +0000519- Issue #3248: Allow placing ScrolledText in a PanedWindow.
520
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000521- Issue #4444: Allow assertRaises() to be used as a context handler, so that
522 the code under test can be written inline if more practical.
523
Georg Brandldb7b6b92009-01-01 15:53:14 +0000524- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
525 works as expected in the interactive environment.
526
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000527- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
528 Gabriel Genellina.
529
Antoine Pitrou180a3362008-12-14 16:36:46 +0000530- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
531 boundary.
532
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000533- Issue #4223: inspect.getsource() will now correctly display source code
534 for packages loaded via zipimport (or any other conformant PEP 302
535 loader). Original patch by Alexander Belopolsky.
536
537- Issue #4201: pdb can now access and display source code loaded via
538 zipimport (or any other conformant PEP 302 loader). Original patch by
539 Alexander Belopolsky.
540
541- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
542 302 conformant loader) will now work correctly in most cases (they
543 are still subject to the constraints that exist for all code running
544 from inside a module loaded via a PEP 302 loader and attempting to
545 perform IO operations based on __file__). Original patch by
546 Alexander Belopolsky.
547
548- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
549 allows backporting to maintenance branches. Original patch by
550 Alexander Belopolsky.
551
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000552- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
553 a non-ASCII letter.
554
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000555- Issue #4616: TarFile.utime(): Restore directory times on Windows.
556
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000557- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
558 codec cannot be found. This is for compatibility with the builtin behavior.
559
Facundo Batista708d5812008-12-11 04:20:07 +0000560- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
561 give correct results in the case where one argument is a quiet NaN
562 and the other is a finite number that requires rounding.
563
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000564- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
565 libs.
566
Georg Brandlf9734072008-12-07 15:30:06 +0000567- Added the subprocess.check_call_output() convenience function to get output
568 from a subprocess on success or raise an exception on error.
569
570- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
571 support unusual filenames (such as those containing semi-colons) in
572 Content-Disposition headers.
573
574- Issue #4384: Added logging integration with warnings module using
575 captureWarnings(). This change includes a NullHandler which does nothing;
576 it will be of use to library developers who want to avoid the "No handlers
577 could be found for logger XXX" message which can appear if the library user
578 doesn't configure logging.
579
580- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
581 exception.
582
Georg Brandleee31162008-12-07 15:15:22 +0000583- Issue #4529: fix the parser module's validation of try-except-finally
584 statements.
585
586- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
587 not a malformed option.
588
589- Added the subprocess.check_output() convenience function to get output
590 from a subprocess on success or raise an exception on error.
591
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000592- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
593 the corresponding tests now pass.
594
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000595- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
596 it was calling the wrong open() function.
597
Fred Drake9a0a65b2008-12-04 19:24:50 +0000598- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
599 support unusual filenames (such as those containing semi-colons) in
600 Content-Disposition headers.
601
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000602- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
603 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
604
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000605- Issue #5104: The socket module now raises OverflowError when 16-bit port and
606 protocol numbers are supplied outside the allowed 0-65536 range on bind()
607 and getservbyport().
608
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000609Tools/Demos
610-----------
611
Antoine Pitrou8a681222009-02-07 17:13:31 +0000612- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
613 and make it 2.6-compatible.
614
Guilherme Poloa7d27972009-01-28 16:06:51 +0000615- Ttk demos added in Demo/tkinter/ttk/
616
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000617- Issue #4677: add two list comprehension tests to pybench.
618
Georg Brandlb1441c72009-01-03 22:33:39 +0000619
620Build
621-----
622
Matthias Klose906785c2009-02-22 23:18:38 +0000623- Link the shared python library with $(MODLIBS).
624
Martin v. Löwis11f72102009-02-10 13:13:30 +0000625- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
626
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000627- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
628
Martin v. Löwise97637d2009-01-11 09:45:11 +0000629- Issue #4895: Use _strdup on Windows CE.
630
Georg Brandlb1441c72009-01-03 22:33:39 +0000631- Issue #4472: "configure --enable-shared" now works on OSX
632
633- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
634
635- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
636
637- Issue #4289: Remove Cancel button from AdvancedDlg.
638
639- Issue #1656675: Register a drop handler for .py* files on Windows.
640
641- Issue #4120: Exclude manifest from extension modules in VS2008.
642
643- Issue #4091: Install pythonxy.dll in system32 again.
644
645- Issue #4018: Disable "for me" installations on Vista.
646
647- Issue #3758: Add ``patchcheck`` build target to .PHONY.
648
649- Issue #4204: Fixed module build errors on FreeBSD 4.
650
651
652C-API
653-----
654
Mark Dickinson21776072009-02-10 16:13:25 +0000655- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
656 for negative arguments. Previously, it raised TypeError.
657
Georg Brandlb1441c72009-01-03 22:33:39 +0000658- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
659
660- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
661 the GIL is released, or owned by another thread.
662
663- Issue #4122: On Windows, fix a compilation error when using the
664 Py_UNICODE_ISSPACE macro in an extension module.
665
666
Mark Dickinsone675f082008-12-11 21:56:00 +0000667Extension Modules
668-----------------
669
Gregory P. Smith365a1862009-02-12 07:35:29 +0000670- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
671 supporting objects as input no matter how it was compiled (built in
672 implementations or external openssl library).
673
Mark Dickinson29500f62009-01-15 15:36:10 +0000674- Issue #4397: Fix occasional test_socket failure on OS X.
675
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000676- Issue #4279: Fix build of parsermodule under Cygwin.
677
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000678- Issue #4751: hashlib now releases the GIL when hashing large buffers
679 (with a hardwired threshold of 2048 bytes), allowing better parallelization
680 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
681
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000682- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
683
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000684- Issue #4738: Each zlib object now has a separate lock, allowing to compress
685 or decompress several streams at once on multi-CPU systems. Also, the GIL
686 is now released when computing the CRC of a large buffer. Patch by ebfe.
687
Georg Brandlb1441c72009-01-03 22:33:39 +0000688- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
689
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000690- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
691
Mark Dickinsone675f082008-12-11 21:56:00 +0000692- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
693 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000694
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000695- Issue #4583: array.array would not always prohibit resizing when a buffer
696 has been exported, resulting in an interpreter crash when accessing the
697 buffer.
698
Martin v. Löwis841edad2008-11-30 10:36:49 +0000699
Guilherme Polo9de29af2009-01-28 20:40:48 +0000700Tests
701-----
702
703- Issue #5083: New 'gui' resource for regrtest.
704
705
Brett Cannon7317c1e2008-11-25 19:19:17 +0000706Docs
707----
708
Georg Brandl52b92cc2008-05-25 09:43:03 +0000709
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000710**(For information about older versions, consult the HISTORY file.)**