blob: 911e94470fc21ac169b467eb695f9ef9224296c9 [file] [log] [blame]
Georg Brandlab6f2f62009-03-31 04:16:10 +00001+++++++++++
2Python News
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00003+++++++++++
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
Georg Brandlab6f2f62009-03-31 04:16:10 +000015- Fix a segfault when running test_exceptions with coverage, caused by
16 insufficient checks in accessors of Exception.__context__.
17
Guido van Rossum0ad59d42009-03-30 22:01:35 +000018- Issue #5604: non-ASCII characters in module name passed to
19 imp.find_module() were converted to UTF-8 while the path is
20 converted to the default filesystem encoding, causing nonsense.
21
Benjamin Peterson09832742009-03-26 17:15:46 +000022- Issue #5126: str.isprintable() returned False for space characters.
23
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +000024- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
25 the end sys.path, for compatibility with the system install of Python.
26
Antoine Pitrou3a652b12009-03-23 18:52:06 +000027- Issue #4688: Add a heuristic so that tuples and dicts containing only
28 untrackable objects are not tracked by the garbage collector. This can
29 reduce the size of collections and therefore the garbage collection overhead
30 on long-running programs, depending on their particular use of datatypes.
31
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000032- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
33 improve its performance. Long divisions and remainder operations
34 are now between 50% and 150% faster.
35
Mark Dickinsonbd792642009-03-18 20:06:12 +000036- Issue #4258: Make it possible to use base 2**30 instead of base
37 2**15 for the internal representation of integers, for performance
38 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
39 --enable-big-digits option to configure, which overrides the
40 default. Add sys.int_info structseq to provide information about
41 the internal format.
42
Mark Dickinson081dfee2009-03-18 14:47:41 +000043- Issue #4474: PyUnicode_FromWideChar now converts characters outside
44 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
45 and sizeof(Py_UNICODE) == 2.
46
Eric Smith8ec90442009-03-14 12:29:34 +000047- Issue #5237: Allow auto-numbered fields in str.format(). For
48 example: '{} {}'.format(1, 2) == '1 2'.
49
Antoine Pitrou652e7072009-03-13 19:25:20 +000050- Issue #5392: when a very low recursion limit was set, the interpreter would
51 abort with a fatal error after the recursion limit was hit twice.
52
Benjamin Petersond1735892009-03-07 18:46:21 +000053Library
54-------
55
Jesse Nollerf8d00852009-03-31 03:25:07 +000056- Issue #5261: Patch multiprocessing's semaphore.c to support context
57 manager use: "with multiprocessing.Lock()" works now.
58
Brett Cannon7f6b4f82009-03-30 21:30:26 +000059- Issue #5236: Change time.strptime() to only take strings. Didn't work with
60 bytes already but the failure was non-obvious.
61
Jesse Noller7af4ef82009-03-30 16:47:15 +000062- Issue #5177: Multiprocessing's SocketListener class now uses
63 socket.SO_REUSEADDR on all connections so that the user no longer needs
64 to wait 120 seconds for the socket to expire.
65
Benjamin Peterson48e24782009-03-29 13:02:52 +000066- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
67
Antoine Pitrou66994e12009-03-29 00:45:26 +000068- Issue #1174606: Calling read() without arguments of an unbounded file
69 (typically /dev/zero under Unix) could crash the interpreter.
70
Benjamin Peterson59406a92009-03-26 17:10:29 +000071- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
72 io.BufferedRandom have been deprecated for removal in Python 3.2.
73
Lars Gustäbel42e00912009-03-22 20:34:29 +000074- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
75 forever on incomplete input. That caused tarfile.open() to hang when used
76 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
77 partial bzip2 compressed data.
78
Mark Dickinson79f52032009-03-17 23:12:51 +000079- Issue #2110: Add support for thousands separator and 'n' type
80 specifier to Decimal.__format__
81
Mark Dickinson9c59fe02009-03-17 18:15:08 +000082- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
83 '>' alignment characters.
84
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +000085- The error detection code in FileIO.close() could fail to reflect the `errno`
86 value, and report it as -1 instead.
87
Antoine Pitroua28fcfd2009-03-13 23:42:55 +000088- Issue #5016: FileIO.seekable() could return False if the file position
89 was negative when truncated to a C int. Patch by Victor Stinner.
90
Mark Dickinsonae681df2009-03-21 10:26:31 +000091Extension Modules
92-----------------
93
94- Issue #5463: In struct module, remove deprecated overflow wrapping
95 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +000096 struct.error instead of returning b'\xff\xff\xff\xff'. The
97 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
98 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +000099
Benjamin Petersond1735892009-03-07 18:46:21 +0000100
Benjamin Petersona58a6262009-03-07 16:34:40 +0000101What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000102================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000103
Benjamin Petersona58a6262009-03-07 16:34:40 +0000104*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000105
106Core and Builtins
107-----------------
108
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000109- The io module has been reimplemented in C for speed.
110
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000111- Give dict views an informative __repr__.
112
Eric Smith5e5c0db2009-02-20 14:25:03 +0000113- Issue #5247: Improve error message when unknown format codes are
114 used when using str.format() with str, int, and float arguments.
115
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000116- Issue #5249: time.strftime returned malformed string when format string
117 contained non ascii character on windows.
118
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000119- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
120 source has already been decoded into str.
121
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000122- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
123 rotating the object pointer by 4 bits to the right.
124
Mark Dickinson87ec0852009-02-09 17:15:59 +0000125- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
126 it now forces its argument to double before testing for infinity.
127
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000128- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
129 returns a non-number type.
130
Benjamin Peterson87618552009-02-08 15:00:52 +0000131- Issue #5182: Removed memoryview.__str__.
132
Mark Dickinsonc008a172009-02-01 13:59:22 +0000133- Issue #1717: Removed builtin cmp() function, dropped tp_compare
134 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000135 the type definition cmpfunc. The tp_compare slot has been renamed
136 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000137
Raymond Hettingere8364232009-02-02 22:55:09 +0000138- Issue 1242657: the __len__() and __length_hint__() calls in several tools
139 were suppressing all exceptions. These include list() and bytearray().
140
Mark Dickinson1124e712009-01-28 21:25:58 +0000141- Issue #4707: round(x, n) now returns an integer if x is an integer.
142 Previously it returned a float.
143
Antoine Pitroub52ec782009-01-25 16:34:23 +0000144- Issue #4753: By enabling a configure option named '--with-computed-gotos'
145 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
146 evaluation loop is compiled with a new dispatch mechanism which gives
147 speedups of up to 20%, depending on the system, on various benchmarks.
148
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000149- Issue #4874: Most builtin decoders now reject unicode input.
150
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000151- Issue #4842: Don't allow trailing 'L' when constructing an integer
152 from a string.
153
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000154- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
155
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000156- Issue #4838: When a module is deallocated, free the memory backing the
157 optional module state data.
158
Mark Dickinson8055afd2009-01-17 10:04:45 +0000159- Issue #4910: Rename nb_long slot to nb_reserved, and change its
160 type to (void *).
161
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000162- Issue #4935: The overflow checking code in the expandtabs() method common
163 to str, bytes and bytearray could be optimized away by the compiler, letting
164 the interpreter segfault instead of raising an error.
165
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000166- Issue #3720: Fix a crash when an iterator modifies its class and removes its
167 __next__ method.
168
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000169- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
170 function no longer attempt to call the __long__ slot to convert an object
171 to an integer. Only the __int__ and __trunc__ slots are examined.
172
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000173- Issue #4893: Use NT threading on CE.
174
Martin v. Löwisec59d042009-01-12 07:59:10 +0000175- Issue #4915: Port sysmodule to Windows CE.
176
Antoine Pitrouab868312009-01-10 15:40:25 +0000177- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
178 common cases are optimized thanks to a dedicated fast path and a moderate
179 amount of loop unrolling.
180
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000181- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
182 collecting the oldest generation) so that allocating lots of objects without
183 destroying them does not show quadratic performance. Based on a proposal by
184 Martin von Löwis at
185 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
186
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000187- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000188 having been closed (for instance, a read() call could return some
189 previously buffered data). Patch by Dmitry Vasiliev.
190
Antoine Pitrou05608432009-01-09 18:53:14 +0000191- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
192 flag to work properly. Furthermore, when specifying -u, the text stdout
193 and stderr streams have line-by-line buffering enabled (the default being
194 to buffer arbitrary chunks of data).
195
Raymond Hettinger35631532009-01-09 03:58:09 +0000196- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
197 instead of ints (reducing its size from 4 to 8 times thereby reducing
198 Python's overall memory).
199
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000200- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
201 an existing .py counterpart, override the co_filename attributes of all
202 code objects if the original filename is obsolete (which can happen if the
203 file has been renamed, moved, or if it is accessed through different paths).
204 Patch by Ziga Seilnacht and Jean-Paul Calderone.
205
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000206- Issue #4580: Fix slicing of memoryviews when the item size is greater than
207 one byte. Also fixes the meaning of len() so that it returns the number of
208 items, rather than the size in bytes.
209
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000210- Issue #4075: Use OutputDebugStringW in Py_FatalError.
211
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000212- Issue #4747: When the terminal does not use utf-8, executing a script with
213 non-ascii characters in its name could fail with a "SyntaxError: None" error.
214
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000215- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000216 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000217
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000218- Issue #3680: Reference cycles created through a dict, set or deque iterator
219 did not get collected.
220
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000221- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
222 where the tp_hash and tp_dict slots are both NULL.
223
Georg Brandlccc47b62008-12-28 11:44:14 +0000224- Issue #4759: None is now allowed as the first argument of
225 bytearray.translate(). It was always allowed for bytes.translate().
226
Skip Montanaro80072cb2008-12-23 03:51:14 +0000227- Added test case to ensure attempts to read from a file opened for writing
228 fail.
229
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000230- Issue #3106: Speedup some comparisons (str/str and int/int).
231
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000232- Issue #2183: Simplify and optimize bytecode for list, dict and set
233 comprehensions. Original patch for list comprehensions by Neal Norwitz.
234
Antoine Pitrou621601a2008-12-17 23:18:19 +0000235- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
236 print elapsed times, not only when some objects are uncollectable /
237 unreachable. Original patch by Neil Schemenauer.
238
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000239- Issue #3439: Add a bit_length method to int.
240
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000241- Issue #2173: When getting device encoding, check that return value of
242 nl_langinfo is not the empty string. This was causing silent build
243 failures on OS X.
244
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000245- Issue #4597: Fixed several opcodes that weren't always propagating
246 exceptions.
247
248- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000249 context manager returns a value that cannot be converted to a bool.
250
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000251- Issue #4445: Replace "sizeof(PyBytesObject)" with
252 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
253 bytes instances. On a typical machine this saves 3 bytes of memory
254 (on average) per allocation of a bytes instance.
255
Christian Heimesa872de52008-12-05 08:26:55 +0000256- Issue #4533: File read operation was dreadfully slow due to a slowly
257 growing read buffer. Fixed by using the same growth rate algorithm as
258 Python 2.x.
259
Antoine Pitrou5504e892008-12-06 21:27:53 +0000260- Issue #4509: Various issues surrounding resize of bytearray objects to
261 which there are buffer exports (e.g. memoryview instances).
262
Georg Brandlf9734072008-12-07 15:30:06 +0000263- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
264 method on file objects with closefd=False. The file descriptor is still
265 kept open but the file object behaves like a closed file. The ``FileIO``
266 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000267
Antoine Pitroubc420402008-12-07 20:14:49 +0000268- Issue #4569: Interpreter crash when mutating a memoryview with an item size
269 larger than 1.
270
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000271- Issue #4748: Lambda generators no longer return a value.
272
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000273- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
274
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000275Library
276-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000277
Antoine Pitrou350370c2009-03-14 00:13:13 +0000278- Issue #1222: locale.format() bug when the thousands separator is a space
279 character.
280
Tarek Ziadé516db942009-03-11 12:52:00 +0000281- Issue #5472: Fixed distutils.test_util tear down. Original patch by
282 Tim Golden.
283
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000284- collections.deque() objects now have a read-only attribute called maxlen.
285
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000286- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
287 it is has been populated and properly configured in order to prevent
288 window flashing.
289
Guilherme Polo56f5be52009-03-07 01:54:57 +0000290- Issue #4792: Prevent a segfault in _tkinter by using the
291 guaranteed to be safe interp argument given to the PythonCmd in place of
292 the Tcl interpreter taken from a PythonCmd_ClientData.
293
294- Issue #5193: Guarantee that tkinter.Text.search returns a string.
295
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000296- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
297 Original patch by Akira Kitada.
298
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000299- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
300
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000301- Issue #5385: Fixed mmap crash after resize failure on windows.
302
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000303- Issue #5179: Fixed subprocess handle leak on failure on windows.
304
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000305- PEP 372: Added collections.OrderedDict().
306
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000307- The _asdict() for method for namedtuples now returns an OrderedDict().
308
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000309- configparser now defaults to using an ordered dictionary.
310
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000311- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
312 import guess_extension`` was used.
313
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000314- Issue #1733986: Fixed mmap crash in accessing elements of second map object
315 with same tagname but larger size than first map. (Windows)
316
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000317- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
318 overrun.
319
Tarek Ziadéf0721222009-02-28 10:16:43 +0000320- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
321 bdist_rpm command.
322
323- Issue #5378: added --quiet option to Distutils bdist_rpm command.
324
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000325- Issue #5052: make Distutils compatible with 2.3 again.
326
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000327- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
328 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000329
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000330- Issue #5287: Add exception handling around findCaller() call to help out
331 IronPython.
332
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000333- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
334 The file was resized to wrong size.
335
336- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
337
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000338- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000339 from the package_data and the data_files metadata.
340
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000341- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000342 support.TempdirManager, to avoid writing in the tests directory.
343
Tarek Ziadé68c50952009-02-13 23:04:17 +0000344- Issue #4524: distutils build_script command failed with --with-suffix=3.
345 Initial patch by Amaury Forgeot d'Arc.
346
Tarek Ziadé811d6242009-02-13 22:26:15 +0000347- Issue #2461: added tests for distutils.util
348
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000349- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
350 which inherited from numbers.py which did not have __slots__ defined. The
351 numbers hierarchy now has its own __slots__ declarations.
352
Antoine Pitroub353c122009-02-11 00:39:14 +0000353- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
354 encoding.
355
Thomas Heller465c8022009-02-10 18:59:04 +0000356- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
357 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
358
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000359- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
360 under NT and OS2. Patch by Philip Jenvey.
361
Brett Cannonbefb14f2009-02-10 02:10:16 +0000362- Issue #5128: Make compileall properly inspect bytecode to determine if needs
363 to be recreated. This avoids a timing hole thanks to the old reliance on the
364 ctime of the files involved.
365
Guilherme Polob681df42009-02-09 22:33:59 +0000366- Issue #5122: Synchronize tk load failure check to prevent a potential
367 deadlock.
368
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000369- Issue #1818: collections.namedtuple() now supports a keyword argument
370 'rename' which lets invalid fieldnames be automatically converted to
371 positional names in the form, _1, _2, ...
372
Guilherme Poloae098992009-02-09 16:44:24 +0000373- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
374
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000375- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
376 public documented method ``ZipImporter.get_filename()``.
377
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000378- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
379 the execution of packages by looking for and executing a ``__main__``
380 submodule when a package name is supplied. Initial patch by Andi
381 Vajda.
382
Guilherme Polo491aee22009-02-06 23:16:11 +0000383- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
384 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
385 Tkapp_Call when calling from a thread different than the one that created
386 the Tcl interpreter. Patch by Robert Hancock.
387
Eric Smith0e5b5622009-02-06 01:32:42 +0000388- Issue #4285: Change sys.version_info to be a named tuple. Patch by
389 Ross Light.
390
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000391- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000392 environment/Makefile. Patch by Douglas Greiman.
393
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000394- Issue #1276768: The verbose option was not used in the code of
395 distutils.file_util and distutils.dir_util.
396
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000397- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000398 --enabled-shared activated. Initial patch by Dave Peterson.
399
Guilherme Polo7f423952009-02-02 21:17:09 +0000400- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
401
Raymond Hettinger85602262009-02-03 04:19:10 +0000402- The shelve module now defaults to pickle protocol 3.
403
Brett Cannone61426e2009-01-30 01:31:34 +0000404- Fix a bug in the trace module where a bytes object from co_lnotab had its
405 items being passed through ord().
406
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000407- Issue #2047: shutil.move() could believe that its destination path was
408 inside its source path if it began with the same letters (e.g. "src" vs.
409 "src.new").
410
Guilherme Polo5f238482009-01-28 14:41:10 +0000411- Added the ttk module. See issue #2983: Ttk support for Tkinter.
412
Raymond Hettinger89e12962009-01-26 02:09:03 +0000413- Removed isSequenceType(), isMappingType, and isNumberType() from the
414 operator module; use the abstract base classes instead. Also removed
415 the repeat() function; use mul() instead.
416
Raymond Hettinger0f055172009-01-27 10:06:09 +0000417- Issue 5021: doctest.testfile() did not create __name__ and
418 collections.namedtuple() relied on __name__ being defined.
419
420- Backport importlib from Python 3.1. Only the import_module() function has
421 been backported to help facilitate transitions from 2.7 to 3.1.
422
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000423- Issue #1885: distutils. When running sdist with --formats=tar,gztar
424 the tar file was overriden by the gztar one.
425
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000426- Issue #4863: distutils.mwerkscompiler has been removed.
427
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000428- Added a new itertools functions: combinations_with_replacement()
429 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000430
Raymond Hettinger30729212009-02-12 06:28:27 +0000431- Issue 5032: added a step argument to itertools.count() and
432 allowed non-integer arguments.
433
Jesse Noller41faa542009-01-25 03:45:53 +0000434- Fix and properly document the multiprocessing module's logging
435 support, expose the internal levels and provide proper usage
436 examples.
437
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000438- Issue #1672332: fix unpickling of subnormal floats, which was
439 producing a ValueError on some platforms.
440
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000441- Issue #3881: Help Tcl to load even when started through the
442 unreadable local symlink to "Program Files" on Vista.
443
Martin v. Löwis59e47792009-01-24 14:10:07 +0000444- Issue #4710: Extract directories properly in the zipfile module;
445 allow adding directories to a zipfile.
446
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000447- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000448 --without-threads argument. When this occurs, _multiprocessing will
449 be disabled, and not compiled.
450
Antoine Pitrou08838b62009-01-21 00:55:13 +0000451- Issue #5008: When a file is opened in append mode with the new IO library,
452 do an explicit seek to the end of file (so that e.g. tell() returns the
453 file size rather than 0). This is consistent with the behaviour of the
454 traditional 2.x file object.
455
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000456- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
457 parameter was set.
458
Mark Dickinson8dd05142009-01-20 20:43:58 +0000459- Issue #4842: Always append a trailing 'L' when pickling longs using
460 pickle protocol 0. When reading, the 'L' is optional.
461
Brett Cannonafccd632009-01-20 02:21:27 +0000462- Add the importlib package.
463
Jesse Noller9a0fc972009-01-18 21:12:58 +0000464- Issue #4301: Patch the logging module to add processName support, remove
465 _check_logger_class from multiprocessing.
466
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000467- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000468 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000469
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000470- Issue #4959: inspect.formatargspec now works for keyword only arguments
471 without defaults.
472
Jesse Noller6214edd2009-01-19 16:23:53 +0000473- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
474 for *nix machines for negative handles and large int handles. Without this check
475 it is possible to segfault the interpreter.
476
Jesse Nollerb0516a62009-01-18 03:11:38 +0000477- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
478 in sharedctypes.py.
479
480- Issue #1225107: inspect.isclass() returned True for instances with a custom
481 __getattr__.
482
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000483- Issue #3826 and #4791: The socket module now closes the underlying socket
484 appropriately when it is being used via socket.makefile() objects
485 rather than delaying the close by waiting for garbage collection to do it.
486
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000487- Issue #1696199: Add collections.Counter() for rapid and convenient
488 counting.
489
Antoine Pitrou308705e2009-01-10 16:22:51 +0000490- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
491
Thomas Heller5e4e4272009-01-08 09:34:20 +0000492- Issue #4867: Fixed a crash in ctypes when passing a string to a
493 function without defining argtypes.
494
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000495- Issue #4272: Add an optional argument to the GzipFile constructor to override
496 the timestamp in the gzip stream. The default value remains the current time.
497 The information can be used by e.g. gunzip when decompressing. Patch by
498 Jacques Frechet.
499
Mark Dickinson315a20a2009-01-04 21:34:18 +0000500- Restore Python 2.3 compatibility for decimal.py.
501
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000502- Issue #3638: Remove functions from _tkinter module level that depend on
503 TkappObject to work with multiple threads.
504
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000505- Issue #4718: Adapt the wsgiref package so that it actually works with
506 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000507 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
508
Raymond Hettinger771ed762009-01-03 19:20:32 +0000509- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
510 to the decimal module.
511
Georg Brandl3a9b0622009-01-03 22:07:57 +0000512- Fractions.from_float() no longer loses precision for integers too big to
513 cast as floats.
514
Mark Dickinsonf9236412009-01-02 23:23:21 +0000515- Issue #4812: add missing underscore prefix to some internal-use-only
516 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
517
Georg Brandl3a9b0622009-01-03 22:07:57 +0000518- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
519 did unnecessary work in the common case where no key function was specified.
520
Georg Brandlb1441c72009-01-03 22:33:39 +0000521- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
522 the function is not a generator.
523
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000524- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
525 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000526
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000527- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000528 function. Original patch by Thomas Heller.
529
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000530- Issue #3767: Convert Tk object to string in tkColorChooser.
531
Martin v. Löwise354d782008-12-29 16:03:04 +0000532- Issue #3248: Allow placing ScrolledText in a PanedWindow.
533
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000534- Issue #4444: Allow assertRaises() to be used as a context handler, so that
535 the code under test can be written inline if more practical.
536
Georg Brandldb7b6b92009-01-01 15:53:14 +0000537- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
538 works as expected in the interactive environment.
539
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000540- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
541 Gabriel Genellina.
542
Antoine Pitrou180a3362008-12-14 16:36:46 +0000543- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
544 boundary.
545
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000546- Issue #4223: inspect.getsource() will now correctly display source code
547 for packages loaded via zipimport (or any other conformant PEP 302
548 loader). Original patch by Alexander Belopolsky.
549
550- Issue #4201: pdb can now access and display source code loaded via
551 zipimport (or any other conformant PEP 302 loader). Original patch by
552 Alexander Belopolsky.
553
554- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
555 302 conformant loader) will now work correctly in most cases (they
556 are still subject to the constraints that exist for all code running
557 from inside a module loaded via a PEP 302 loader and attempting to
558 perform IO operations based on __file__). Original patch by
559 Alexander Belopolsky.
560
561- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
562 allows backporting to maintenance branches. Original patch by
563 Alexander Belopolsky.
564
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000565- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
566 a non-ASCII letter.
567
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000568- Issue #4616: TarFile.utime(): Restore directory times on Windows.
569
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000570- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
571 codec cannot be found. This is for compatibility with the builtin behavior.
572
Facundo Batista708d5812008-12-11 04:20:07 +0000573- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
574 give correct results in the case where one argument is a quiet NaN
575 and the other is a finite number that requires rounding.
576
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000577- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
578 libs.
579
Georg Brandlf9734072008-12-07 15:30:06 +0000580- Added the subprocess.check_call_output() convenience function to get output
581 from a subprocess on success or raise an exception on error.
582
583- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
584 support unusual filenames (such as those containing semi-colons) in
585 Content-Disposition headers.
586
587- Issue #4384: Added logging integration with warnings module using
588 captureWarnings(). This change includes a NullHandler which does nothing;
589 it will be of use to library developers who want to avoid the "No handlers
590 could be found for logger XXX" message which can appear if the library user
591 doesn't configure logging.
592
593- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
594 exception.
595
Georg Brandleee31162008-12-07 15:15:22 +0000596- Issue #4529: fix the parser module's validation of try-except-finally
597 statements.
598
599- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
600 not a malformed option.
601
602- Added the subprocess.check_output() convenience function to get output
603 from a subprocess on success or raise an exception on error.
604
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000605- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
606 the corresponding tests now pass.
607
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000608- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
609 it was calling the wrong open() function.
610
Fred Drake9a0a65b2008-12-04 19:24:50 +0000611- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
612 support unusual filenames (such as those containing semi-colons) in
613 Content-Disposition headers.
614
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000615- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
616 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
617
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000618- Issue #5104: The socket module now raises OverflowError when 16-bit port and
619 protocol numbers are supplied outside the allowed 0-65536 range on bind()
620 and getservbyport().
621
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000622Tools/Demos
623-----------
624
Antoine Pitrou8a681222009-02-07 17:13:31 +0000625- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
626 and make it 2.6-compatible.
627
Guilherme Poloa7d27972009-01-28 16:06:51 +0000628- Ttk demos added in Demo/tkinter/ttk/
629
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000630- Issue #4677: add two list comprehension tests to pybench.
631
Georg Brandlb1441c72009-01-03 22:33:39 +0000632
633Build
634-----
635
Matthias Klose906785c2009-02-22 23:18:38 +0000636- Link the shared python library with $(MODLIBS).
637
Martin v. Löwis11f72102009-02-10 13:13:30 +0000638- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
639
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000640- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
641
Martin v. Löwise97637d2009-01-11 09:45:11 +0000642- Issue #4895: Use _strdup on Windows CE.
643
Georg Brandlb1441c72009-01-03 22:33:39 +0000644- Issue #4472: "configure --enable-shared" now works on OSX
645
646- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
647
648- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
649
650- Issue #4289: Remove Cancel button from AdvancedDlg.
651
652- Issue #1656675: Register a drop handler for .py* files on Windows.
653
654- Issue #4120: Exclude manifest from extension modules in VS2008.
655
656- Issue #4091: Install pythonxy.dll in system32 again.
657
658- Issue #4018: Disable "for me" installations on Vista.
659
660- Issue #3758: Add ``patchcheck`` build target to .PHONY.
661
662- Issue #4204: Fixed module build errors on FreeBSD 4.
663
664
665C-API
666-----
667
Mark Dickinson21776072009-02-10 16:13:25 +0000668- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
669 for negative arguments. Previously, it raised TypeError.
670
Georg Brandlb1441c72009-01-03 22:33:39 +0000671- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
672
673- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
674 the GIL is released, or owned by another thread.
675
676- Issue #4122: On Windows, fix a compilation error when using the
677 Py_UNICODE_ISSPACE macro in an extension module.
678
679
Mark Dickinsone675f082008-12-11 21:56:00 +0000680Extension Modules
681-----------------
682
Gregory P. Smith365a1862009-02-12 07:35:29 +0000683- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
684 supporting objects as input no matter how it was compiled (built in
685 implementations or external openssl library).
686
Mark Dickinson29500f62009-01-15 15:36:10 +0000687- Issue #4397: Fix occasional test_socket failure on OS X.
688
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000689- Issue #4279: Fix build of parsermodule under Cygwin.
690
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000691- Issue #4751: hashlib now releases the GIL when hashing large buffers
692 (with a hardwired threshold of 2048 bytes), allowing better parallelization
693 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
694
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000695- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
696
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000697- Issue #4738: Each zlib object now has a separate lock, allowing to compress
698 or decompress several streams at once on multi-CPU systems. Also, the GIL
699 is now released when computing the CRC of a large buffer. Patch by ebfe.
700
Georg Brandlb1441c72009-01-03 22:33:39 +0000701- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
702
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000703- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
704
Mark Dickinsone675f082008-12-11 21:56:00 +0000705- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
706 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000707
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000708- Issue #4583: array.array would not always prohibit resizing when a buffer
709 has been exported, resulting in an interpreter crash when accessing the
710 buffer.
711
Martin v. Löwis841edad2008-11-30 10:36:49 +0000712
Guilherme Polo9de29af2009-01-28 20:40:48 +0000713Tests
714-----
715
716- Issue #5083: New 'gui' resource for regrtest.
717
718
Brett Cannon7317c1e2008-11-25 19:19:17 +0000719Docs
720----
721
Georg Brandl52b92cc2008-05-25 09:43:03 +0000722
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000723**(For information about older versions, consult the HISTORY file.)**