blob: b02e7856841a19c39ae3e332c42c6e708b1de77d [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
Brett Cannon0759dd62009-04-01 18:13:07 +000015- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
16
Georg Brandlab6f2f62009-03-31 04:16:10 +000017- Fix a segfault when running test_exceptions with coverage, caused by
18 insufficient checks in accessors of Exception.__context__.
19
Guido van Rossum0ad59d42009-03-30 22:01:35 +000020- Issue #5604: non-ASCII characters in module name passed to
21 imp.find_module() were converted to UTF-8 while the path is
22 converted to the default filesystem encoding, causing nonsense.
23
Benjamin Peterson09832742009-03-26 17:15:46 +000024- Issue #5126: str.isprintable() returned False for space characters.
25
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +000026- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
27 the end sys.path, for compatibility with the system install of Python.
28
Antoine Pitrou3a652b12009-03-23 18:52:06 +000029- Issue #4688: Add a heuristic so that tuples and dicts containing only
30 untrackable objects are not tracked by the garbage collector. This can
31 reduce the size of collections and therefore the garbage collection overhead
32 on long-running programs, depending on their particular use of datatypes.
33
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000034- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
35 improve its performance. Long divisions and remainder operations
36 are now between 50% and 150% faster.
37
Mark Dickinsonbd792642009-03-18 20:06:12 +000038- Issue #4258: Make it possible to use base 2**30 instead of base
39 2**15 for the internal representation of integers, for performance
40 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
41 --enable-big-digits option to configure, which overrides the
42 default. Add sys.int_info structseq to provide information about
43 the internal format.
44
Mark Dickinson081dfee2009-03-18 14:47:41 +000045- Issue #4474: PyUnicode_FromWideChar now converts characters outside
46 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
47 and sizeof(Py_UNICODE) == 2.
48
Eric Smith8ec90442009-03-14 12:29:34 +000049- Issue #5237: Allow auto-numbered fields in str.format(). For
50 example: '{} {}'.format(1, 2) == '1 2'.
51
Antoine Pitrou652e7072009-03-13 19:25:20 +000052- Issue #5392: when a very low recursion limit was set, the interpreter would
53 abort with a fatal error after the recursion limit was hit twice.
54
Benjamin Petersond1735892009-03-07 18:46:21 +000055Library
56-------
57
Georg Brandl33c28812009-04-01 23:07:29 +000058- Issue #5656: Fix the coverage reporting when running the test suite with
59 the -T argument.
60
Raymond Hettinger3f10a952009-04-01 19:05:50 +000061- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
62
Georg Brandl4ed72ac2009-04-01 04:28:33 +000063- Issue #5624: Fix the _winreg module name still used in several modules.
64
Benjamin Petersona1b49012009-03-31 23:11:32 +000065- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
66
Jesse Nollera9314042009-03-31 22:36:44 +000067- Issue #5619: Multiprocessing children disobey the debug flag and causes
68 popups on windows buildbots. Patch applied to work around this issue.
69
Jesse Noller32d68c22009-03-31 18:48:42 +000070- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
71
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +000072- Issue #5387: Fixed mmap.move crash by integer overflow.
73
Jesse Nollerf8d00852009-03-31 03:25:07 +000074- Issue #5261: Patch multiprocessing's semaphore.c to support context
75 manager use: "with multiprocessing.Lock()" works now.
76
Brett Cannon7f6b4f82009-03-30 21:30:26 +000077- Issue #5236: Change time.strptime() to only take strings. Didn't work with
78 bytes already but the failure was non-obvious.
79
Jesse Noller7af4ef82009-03-30 16:47:15 +000080- Issue #5177: Multiprocessing's SocketListener class now uses
81 socket.SO_REUSEADDR on all connections so that the user no longer needs
82 to wait 120 seconds for the socket to expire.
83
Benjamin Peterson48e24782009-03-29 13:02:52 +000084- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
85
Antoine Pitrou66994e12009-03-29 00:45:26 +000086- Issue #1174606: Calling read() without arguments of an unbounded file
87 (typically /dev/zero under Unix) could crash the interpreter.
88
Benjamin Peterson59406a92009-03-26 17:10:29 +000089- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
90 io.BufferedRandom have been deprecated for removal in Python 3.2.
91
Lars Gustäbel42e00912009-03-22 20:34:29 +000092- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
93 forever on incomplete input. That caused tarfile.open() to hang when used
94 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
95 partial bzip2 compressed data.
96
Mark Dickinson79f52032009-03-17 23:12:51 +000097- Issue #2110: Add support for thousands separator and 'n' type
98 specifier to Decimal.__format__
99
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000100- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
101 '>' alignment characters.
102
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000103- The error detection code in FileIO.close() could fail to reflect the `errno`
104 value, and report it as -1 instead.
105
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000106- Issue #5016: FileIO.seekable() could return False if the file position
107 was negative when truncated to a C int. Patch by Victor Stinner.
108
Mark Dickinsonae681df2009-03-21 10:26:31 +0000109Extension Modules
110-----------------
111
112- Issue #5463: In struct module, remove deprecated overflow wrapping
113 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000114 struct.error instead of returning b'\xff\xff\xff\xff'. The
115 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
116 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000117
Benjamin Petersond1735892009-03-07 18:46:21 +0000118
Benjamin Petersona58a6262009-03-07 16:34:40 +0000119What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000120================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000121
Benjamin Petersona58a6262009-03-07 16:34:40 +0000122*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000123
124Core and Builtins
125-----------------
126
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000127- The io module has been reimplemented in C for speed.
128
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000129- Give dict views an informative __repr__.
130
Eric Smith5e5c0db2009-02-20 14:25:03 +0000131- Issue #5247: Improve error message when unknown format codes are
132 used when using str.format() with str, int, and float arguments.
133
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000134- Issue #5249: time.strftime returned malformed string when format string
135 contained non ascii character on windows.
136
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000137- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
138 source has already been decoded into str.
139
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000140- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
141 rotating the object pointer by 4 bits to the right.
142
Mark Dickinson87ec0852009-02-09 17:15:59 +0000143- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
144 it now forces its argument to double before testing for infinity.
145
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000146- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
147 returns a non-number type.
148
Benjamin Peterson87618552009-02-08 15:00:52 +0000149- Issue #5182: Removed memoryview.__str__.
150
Mark Dickinsonc008a172009-02-01 13:59:22 +0000151- Issue #1717: Removed builtin cmp() function, dropped tp_compare
152 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000153 the type definition cmpfunc. The tp_compare slot has been renamed
154 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000155
Raymond Hettingere8364232009-02-02 22:55:09 +0000156- Issue 1242657: the __len__() and __length_hint__() calls in several tools
157 were suppressing all exceptions. These include list() and bytearray().
158
Mark Dickinson1124e712009-01-28 21:25:58 +0000159- Issue #4707: round(x, n) now returns an integer if x is an integer.
160 Previously it returned a float.
161
Antoine Pitroub52ec782009-01-25 16:34:23 +0000162- Issue #4753: By enabling a configure option named '--with-computed-gotos'
163 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
164 evaluation loop is compiled with a new dispatch mechanism which gives
165 speedups of up to 20%, depending on the system, on various benchmarks.
166
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000167- Issue #4874: Most builtin decoders now reject unicode input.
168
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000169- Issue #4842: Don't allow trailing 'L' when constructing an integer
170 from a string.
171
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000172- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
173
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000174- Issue #4838: When a module is deallocated, free the memory backing the
175 optional module state data.
176
Mark Dickinson8055afd2009-01-17 10:04:45 +0000177- Issue #4910: Rename nb_long slot to nb_reserved, and change its
178 type to (void *).
179
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000180- Issue #4935: The overflow checking code in the expandtabs() method common
181 to str, bytes and bytearray could be optimized away by the compiler, letting
182 the interpreter segfault instead of raising an error.
183
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000184- Issue #3720: Fix a crash when an iterator modifies its class and removes its
185 __next__ method.
186
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000187- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
188 function no longer attempt to call the __long__ slot to convert an object
189 to an integer. Only the __int__ and __trunc__ slots are examined.
190
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000191- Issue #4893: Use NT threading on CE.
192
Martin v. Löwisec59d042009-01-12 07:59:10 +0000193- Issue #4915: Port sysmodule to Windows CE.
194
Antoine Pitrouab868312009-01-10 15:40:25 +0000195- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
196 common cases are optimized thanks to a dedicated fast path and a moderate
197 amount of loop unrolling.
198
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000199- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
200 collecting the oldest generation) so that allocating lots of objects without
201 destroying them does not show quadratic performance. Based on a proposal by
202 Martin von Löwis at
203 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
204
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000205- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000206 having been closed (for instance, a read() call could return some
207 previously buffered data). Patch by Dmitry Vasiliev.
208
Antoine Pitrou05608432009-01-09 18:53:14 +0000209- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
210 flag to work properly. Furthermore, when specifying -u, the text stdout
211 and stderr streams have line-by-line buffering enabled (the default being
212 to buffer arbitrary chunks of data).
213
Raymond Hettinger35631532009-01-09 03:58:09 +0000214- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
215 instead of ints (reducing its size from 4 to 8 times thereby reducing
216 Python's overall memory).
217
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000218- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
219 an existing .py counterpart, override the co_filename attributes of all
220 code objects if the original filename is obsolete (which can happen if the
221 file has been renamed, moved, or if it is accessed through different paths).
222 Patch by Ziga Seilnacht and Jean-Paul Calderone.
223
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000224- Issue #4580: Fix slicing of memoryviews when the item size is greater than
225 one byte. Also fixes the meaning of len() so that it returns the number of
226 items, rather than the size in bytes.
227
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000228- Issue #4075: Use OutputDebugStringW in Py_FatalError.
229
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000230- Issue #4747: When the terminal does not use utf-8, executing a script with
231 non-ascii characters in its name could fail with a "SyntaxError: None" error.
232
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000233- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000234 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000235
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000236- Issue #3680: Reference cycles created through a dict, set or deque iterator
237 did not get collected.
238
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000239- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
240 where the tp_hash and tp_dict slots are both NULL.
241
Georg Brandlccc47b62008-12-28 11:44:14 +0000242- Issue #4759: None is now allowed as the first argument of
243 bytearray.translate(). It was always allowed for bytes.translate().
244
Skip Montanaro80072cb2008-12-23 03:51:14 +0000245- Added test case to ensure attempts to read from a file opened for writing
246 fail.
247
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000248- Issue #3106: Speedup some comparisons (str/str and int/int).
249
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000250- Issue #2183: Simplify and optimize bytecode for list, dict and set
251 comprehensions. Original patch for list comprehensions by Neal Norwitz.
252
Antoine Pitrou621601a2008-12-17 23:18:19 +0000253- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
254 print elapsed times, not only when some objects are uncollectable /
255 unreachable. Original patch by Neil Schemenauer.
256
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000257- Issue #3439: Add a bit_length method to int.
258
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000259- Issue #2173: When getting device encoding, check that return value of
260 nl_langinfo is not the empty string. This was causing silent build
261 failures on OS X.
262
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000263- Issue #4597: Fixed several opcodes that weren't always propagating
264 exceptions.
265
266- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000267 context manager returns a value that cannot be converted to a bool.
268
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000269- Issue #4445: Replace "sizeof(PyBytesObject)" with
270 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
271 bytes instances. On a typical machine this saves 3 bytes of memory
272 (on average) per allocation of a bytes instance.
273
Christian Heimesa872de52008-12-05 08:26:55 +0000274- Issue #4533: File read operation was dreadfully slow due to a slowly
275 growing read buffer. Fixed by using the same growth rate algorithm as
276 Python 2.x.
277
Antoine Pitrou5504e892008-12-06 21:27:53 +0000278- Issue #4509: Various issues surrounding resize of bytearray objects to
279 which there are buffer exports (e.g. memoryview instances).
280
Georg Brandlf9734072008-12-07 15:30:06 +0000281- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
282 method on file objects with closefd=False. The file descriptor is still
283 kept open but the file object behaves like a closed file. The ``FileIO``
284 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000285
Antoine Pitroubc420402008-12-07 20:14:49 +0000286- Issue #4569: Interpreter crash when mutating a memoryview with an item size
287 larger than 1.
288
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000289- Issue #4748: Lambda generators no longer return a value.
290
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000291- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
292
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000293Library
294-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000295
Brett Cannonf47e84c2009-04-01 16:06:01 +0000296- Issue #1665206 (partially): Move imports in cgitb to the top of the module
297 instead of performing them in functions. Helps prevent import deadlocking in
298 threads.
299
R. David Murraye59482e2009-04-01 03:42:00 +0000300- Issue #2522: locale.format now checks its first argument to ensure it has
301 been passed only one pattern, avoiding mysterious errors where it appeared
302 that it was failing to do localization.
303
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000304- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
305 Brandl.
306
Antoine Pitrou350370c2009-03-14 00:13:13 +0000307- Issue #1222: locale.format() bug when the thousands separator is a space
308 character.
309
Tarek Ziadé516db942009-03-11 12:52:00 +0000310- Issue #5472: Fixed distutils.test_util tear down. Original patch by
311 Tim Golden.
312
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000313- collections.deque() objects now have a read-only attribute called maxlen.
314
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000315- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
316 it is has been populated and properly configured in order to prevent
317 window flashing.
318
Guilherme Polo56f5be52009-03-07 01:54:57 +0000319- Issue #4792: Prevent a segfault in _tkinter by using the
320 guaranteed to be safe interp argument given to the PythonCmd in place of
321 the Tcl interpreter taken from a PythonCmd_ClientData.
322
323- Issue #5193: Guarantee that tkinter.Text.search returns a string.
324
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000325- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
326 Original patch by Akira Kitada.
327
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000328- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
329
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000330- Issue #5385: Fixed mmap crash after resize failure on windows.
331
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000332- Issue #5179: Fixed subprocess handle leak on failure on windows.
333
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000334- PEP 372: Added collections.OrderedDict().
335
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000336- The _asdict() for method for namedtuples now returns an OrderedDict().
337
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000338- configparser now defaults to using an ordered dictionary.
339
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000340- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
341 import guess_extension`` was used.
342
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000343- Issue #1733986: Fixed mmap crash in accessing elements of second map object
344 with same tagname but larger size than first map. (Windows)
345
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000346- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
347 overrun.
348
Tarek Ziadéf0721222009-02-28 10:16:43 +0000349- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
350 bdist_rpm command.
351
352- Issue #5378: added --quiet option to Distutils bdist_rpm command.
353
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000354- Issue #5052: make Distutils compatible with 2.3 again.
355
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000356- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
357 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000358
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000359- Issue #5287: Add exception handling around findCaller() call to help out
360 IronPython.
361
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000362- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
363 The file was resized to wrong size.
364
365- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
366
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000367- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000368 from the package_data and the data_files metadata.
369
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000370- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000371 support.TempdirManager, to avoid writing in the tests directory.
372
Tarek Ziadé68c50952009-02-13 23:04:17 +0000373- Issue #4524: distutils build_script command failed with --with-suffix=3.
374 Initial patch by Amaury Forgeot d'Arc.
375
Tarek Ziadé811d6242009-02-13 22:26:15 +0000376- Issue #2461: added tests for distutils.util
377
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000378- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
379 which inherited from numbers.py which did not have __slots__ defined. The
380 numbers hierarchy now has its own __slots__ declarations.
381
Antoine Pitroub353c122009-02-11 00:39:14 +0000382- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
383 encoding.
384
Thomas Heller465c8022009-02-10 18:59:04 +0000385- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
386 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
387
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000388- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
389 under NT and OS2. Patch by Philip Jenvey.
390
Brett Cannonbefb14f2009-02-10 02:10:16 +0000391- Issue #5128: Make compileall properly inspect bytecode to determine if needs
392 to be recreated. This avoids a timing hole thanks to the old reliance on the
393 ctime of the files involved.
394
Guilherme Polob681df42009-02-09 22:33:59 +0000395- Issue #5122: Synchronize tk load failure check to prevent a potential
396 deadlock.
397
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000398- Issue #1818: collections.namedtuple() now supports a keyword argument
399 'rename' which lets invalid fieldnames be automatically converted to
400 positional names in the form, _1, _2, ...
401
Guilherme Poloae098992009-02-09 16:44:24 +0000402- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
403
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000404- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
405 public documented method ``ZipImporter.get_filename()``.
406
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000407- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
408 the execution of packages by looking for and executing a ``__main__``
409 submodule when a package name is supplied. Initial patch by Andi
410 Vajda.
411
Guilherme Polo491aee22009-02-06 23:16:11 +0000412- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
413 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
414 Tkapp_Call when calling from a thread different than the one that created
415 the Tcl interpreter. Patch by Robert Hancock.
416
Eric Smith0e5b5622009-02-06 01:32:42 +0000417- Issue #4285: Change sys.version_info to be a named tuple. Patch by
418 Ross Light.
419
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000420- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000421 environment/Makefile. Patch by Douglas Greiman.
422
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000423- Issue #1276768: The verbose option was not used in the code of
424 distutils.file_util and distutils.dir_util.
425
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000426- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000427 --enabled-shared activated. Initial patch by Dave Peterson.
428
Guilherme Polo7f423952009-02-02 21:17:09 +0000429- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
430
Raymond Hettinger85602262009-02-03 04:19:10 +0000431- The shelve module now defaults to pickle protocol 3.
432
Brett Cannone61426e2009-01-30 01:31:34 +0000433- Fix a bug in the trace module where a bytes object from co_lnotab had its
434 items being passed through ord().
435
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000436- Issue #2047: shutil.move() could believe that its destination path was
437 inside its source path if it began with the same letters (e.g. "src" vs.
438 "src.new").
439
Guilherme Polo5f238482009-01-28 14:41:10 +0000440- Added the ttk module. See issue #2983: Ttk support for Tkinter.
441
Raymond Hettinger89e12962009-01-26 02:09:03 +0000442- Removed isSequenceType(), isMappingType, and isNumberType() from the
443 operator module; use the abstract base classes instead. Also removed
444 the repeat() function; use mul() instead.
445
Raymond Hettinger0f055172009-01-27 10:06:09 +0000446- Issue 5021: doctest.testfile() did not create __name__ and
447 collections.namedtuple() relied on __name__ being defined.
448
449- Backport importlib from Python 3.1. Only the import_module() function has
450 been backported to help facilitate transitions from 2.7 to 3.1.
451
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000452- Issue #1885: distutils. When running sdist with --formats=tar,gztar
453 the tar file was overriden by the gztar one.
454
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000455- Issue #4863: distutils.mwerkscompiler has been removed.
456
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000457- Added a new itertools functions: combinations_with_replacement()
458 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000459
Raymond Hettinger30729212009-02-12 06:28:27 +0000460- Issue 5032: added a step argument to itertools.count() and
461 allowed non-integer arguments.
462
Jesse Noller41faa542009-01-25 03:45:53 +0000463- Fix and properly document the multiprocessing module's logging
464 support, expose the internal levels and provide proper usage
465 examples.
466
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000467- Issue #1672332: fix unpickling of subnormal floats, which was
468 producing a ValueError on some platforms.
469
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000470- Issue #3881: Help Tcl to load even when started through the
471 unreadable local symlink to "Program Files" on Vista.
472
Martin v. Löwis59e47792009-01-24 14:10:07 +0000473- Issue #4710: Extract directories properly in the zipfile module;
474 allow adding directories to a zipfile.
475
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000476- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000477 --without-threads argument. When this occurs, _multiprocessing will
478 be disabled, and not compiled.
479
Antoine Pitrou08838b62009-01-21 00:55:13 +0000480- Issue #5008: When a file is opened in append mode with the new IO library,
481 do an explicit seek to the end of file (so that e.g. tell() returns the
482 file size rather than 0). This is consistent with the behaviour of the
483 traditional 2.x file object.
484
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000485- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
486 parameter was set.
487
Mark Dickinson8dd05142009-01-20 20:43:58 +0000488- Issue #4842: Always append a trailing 'L' when pickling longs using
489 pickle protocol 0. When reading, the 'L' is optional.
490
Brett Cannonafccd632009-01-20 02:21:27 +0000491- Add the importlib package.
492
Jesse Noller9a0fc972009-01-18 21:12:58 +0000493- Issue #4301: Patch the logging module to add processName support, remove
494 _check_logger_class from multiprocessing.
495
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000496- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000497 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000498
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000499- Issue #4959: inspect.formatargspec now works for keyword only arguments
500 without defaults.
501
Jesse Noller6214edd2009-01-19 16:23:53 +0000502- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
503 for *nix machines for negative handles and large int handles. Without this check
504 it is possible to segfault the interpreter.
505
Jesse Nollerb0516a62009-01-18 03:11:38 +0000506- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
507 in sharedctypes.py.
508
509- Issue #1225107: inspect.isclass() returned True for instances with a custom
510 __getattr__.
511
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000512- Issue #3826 and #4791: The socket module now closes the underlying socket
513 appropriately when it is being used via socket.makefile() objects
514 rather than delaying the close by waiting for garbage collection to do it.
515
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000516- Issue #1696199: Add collections.Counter() for rapid and convenient
517 counting.
518
Antoine Pitrou308705e2009-01-10 16:22:51 +0000519- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
520
Thomas Heller5e4e4272009-01-08 09:34:20 +0000521- Issue #4867: Fixed a crash in ctypes when passing a string to a
522 function without defining argtypes.
523
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000524- Issue #4272: Add an optional argument to the GzipFile constructor to override
525 the timestamp in the gzip stream. The default value remains the current time.
526 The information can be used by e.g. gunzip when decompressing. Patch by
527 Jacques Frechet.
528
Mark Dickinson315a20a2009-01-04 21:34:18 +0000529- Restore Python 2.3 compatibility for decimal.py.
530
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000531- Issue #3638: Remove functions from _tkinter module level that depend on
532 TkappObject to work with multiple threads.
533
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000534- Issue #4718: Adapt the wsgiref package so that it actually works with
535 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000536 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
537
Raymond Hettinger771ed762009-01-03 19:20:32 +0000538- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
539 to the decimal module.
540
Georg Brandl3a9b0622009-01-03 22:07:57 +0000541- Fractions.from_float() no longer loses precision for integers too big to
542 cast as floats.
543
Mark Dickinsonf9236412009-01-02 23:23:21 +0000544- Issue #4812: add missing underscore prefix to some internal-use-only
545 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
546
Georg Brandl3a9b0622009-01-03 22:07:57 +0000547- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
548 did unnecessary work in the common case where no key function was specified.
549
Georg Brandlb1441c72009-01-03 22:33:39 +0000550- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
551 the function is not a generator.
552
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000553- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
554 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000555
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000556- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000557 function. Original patch by Thomas Heller.
558
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000559- Issue #3767: Convert Tk object to string in tkColorChooser.
560
Martin v. Löwise354d782008-12-29 16:03:04 +0000561- Issue #3248: Allow placing ScrolledText in a PanedWindow.
562
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000563- Issue #4444: Allow assertRaises() to be used as a context handler, so that
564 the code under test can be written inline if more practical.
565
Georg Brandldb7b6b92009-01-01 15:53:14 +0000566- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
567 works as expected in the interactive environment.
568
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000569- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
570 Gabriel Genellina.
571
Antoine Pitrou180a3362008-12-14 16:36:46 +0000572- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
573 boundary.
574
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000575- Issue #4223: inspect.getsource() will now correctly display source code
576 for packages loaded via zipimport (or any other conformant PEP 302
577 loader). Original patch by Alexander Belopolsky.
578
579- Issue #4201: pdb can now access and display source code loaded via
580 zipimport (or any other conformant PEP 302 loader). Original patch by
581 Alexander Belopolsky.
582
583- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
584 302 conformant loader) will now work correctly in most cases (they
585 are still subject to the constraints that exist for all code running
586 from inside a module loaded via a PEP 302 loader and attempting to
587 perform IO operations based on __file__). Original patch by
588 Alexander Belopolsky.
589
590- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
591 allows backporting to maintenance branches. Original patch by
592 Alexander Belopolsky.
593
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000594- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
595 a non-ASCII letter.
596
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000597- Issue #4616: TarFile.utime(): Restore directory times on Windows.
598
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000599- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
600 codec cannot be found. This is for compatibility with the builtin behavior.
601
Facundo Batista708d5812008-12-11 04:20:07 +0000602- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
603 give correct results in the case where one argument is a quiet NaN
604 and the other is a finite number that requires rounding.
605
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000606- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
607 libs.
608
Georg Brandlf9734072008-12-07 15:30:06 +0000609- Added the subprocess.check_call_output() convenience function to get output
610 from a subprocess on success or raise an exception on error.
611
612- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
613 support unusual filenames (such as those containing semi-colons) in
614 Content-Disposition headers.
615
616- Issue #4384: Added logging integration with warnings module using
617 captureWarnings(). This change includes a NullHandler which does nothing;
618 it will be of use to library developers who want to avoid the "No handlers
619 could be found for logger XXX" message which can appear if the library user
620 doesn't configure logging.
621
622- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
623 exception.
624
Georg Brandleee31162008-12-07 15:15:22 +0000625- Issue #4529: fix the parser module's validation of try-except-finally
626 statements.
627
628- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
629 not a malformed option.
630
631- Added the subprocess.check_output() convenience function to get output
632 from a subprocess on success or raise an exception on error.
633
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000634- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
635 the corresponding tests now pass.
636
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000637- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
638 it was calling the wrong open() function.
639
Fred Drake9a0a65b2008-12-04 19:24:50 +0000640- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
641 support unusual filenames (such as those containing semi-colons) in
642 Content-Disposition headers.
643
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000644- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
645 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
646
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000647- Issue #5104: The socket module now raises OverflowError when 16-bit port and
648 protocol numbers are supplied outside the allowed 0-65536 range on bind()
649 and getservbyport().
650
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000651Tools/Demos
652-----------
653
Antoine Pitrou8a681222009-02-07 17:13:31 +0000654- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
655 and make it 2.6-compatible.
656
Guilherme Poloa7d27972009-01-28 16:06:51 +0000657- Ttk demos added in Demo/tkinter/ttk/
658
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000659- Issue #4677: add two list comprehension tests to pybench.
660
Georg Brandlb1441c72009-01-03 22:33:39 +0000661
662Build
663-----
664
Matthias Klose906785c2009-02-22 23:18:38 +0000665- Link the shared python library with $(MODLIBS).
666
Martin v. Löwis11f72102009-02-10 13:13:30 +0000667- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
668
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000669- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
670
Martin v. Löwise97637d2009-01-11 09:45:11 +0000671- Issue #4895: Use _strdup on Windows CE.
672
Georg Brandlb1441c72009-01-03 22:33:39 +0000673- Issue #4472: "configure --enable-shared" now works on OSX
674
675- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
676
677- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
678
679- Issue #4289: Remove Cancel button from AdvancedDlg.
680
681- Issue #1656675: Register a drop handler for .py* files on Windows.
682
683- Issue #4120: Exclude manifest from extension modules in VS2008.
684
685- Issue #4091: Install pythonxy.dll in system32 again.
686
687- Issue #4018: Disable "for me" installations on Vista.
688
689- Issue #3758: Add ``patchcheck`` build target to .PHONY.
690
691- Issue #4204: Fixed module build errors on FreeBSD 4.
692
693
694C-API
695-----
696
Mark Dickinson21776072009-02-10 16:13:25 +0000697- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
698 for negative arguments. Previously, it raised TypeError.
699
Georg Brandlb1441c72009-01-03 22:33:39 +0000700- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
701
702- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
703 the GIL is released, or owned by another thread.
704
705- Issue #4122: On Windows, fix a compilation error when using the
706 Py_UNICODE_ISSPACE macro in an extension module.
707
708
Mark Dickinsone675f082008-12-11 21:56:00 +0000709Extension Modules
710-----------------
711
Gregory P. Smith365a1862009-02-12 07:35:29 +0000712- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
713 supporting objects as input no matter how it was compiled (built in
714 implementations or external openssl library).
715
Mark Dickinson29500f62009-01-15 15:36:10 +0000716- Issue #4397: Fix occasional test_socket failure on OS X.
717
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000718- Issue #4279: Fix build of parsermodule under Cygwin.
719
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000720- Issue #4751: hashlib now releases the GIL when hashing large buffers
721 (with a hardwired threshold of 2048 bytes), allowing better parallelization
722 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
723
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000724- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
725
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000726- Issue #4738: Each zlib object now has a separate lock, allowing to compress
727 or decompress several streams at once on multi-CPU systems. Also, the GIL
728 is now released when computing the CRC of a large buffer. Patch by ebfe.
729
Georg Brandlb1441c72009-01-03 22:33:39 +0000730- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
731
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000732- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
733
Mark Dickinsone675f082008-12-11 21:56:00 +0000734- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
735 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000736
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000737- Issue #4583: array.array would not always prohibit resizing when a buffer
738 has been exported, resulting in an interpreter crash when accessing the
739 buffer.
740
Martin v. Löwis841edad2008-11-30 10:36:49 +0000741
Jack Diederiche0cbd692009-04-01 04:27:09 +0000742- Issue #5228: Make functools.partial objects can now be pickled.
743
Guilherme Polo9de29af2009-01-28 20:40:48 +0000744Tests
745-----
746
R. David Murraya21e4ca2009-03-31 23:16:50 +0000747- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
748 that should cause a test to be skipped are now done using import_module
749 from test support, which does the conversion.
750
Guilherme Polo9de29af2009-01-28 20:40:48 +0000751- Issue #5083: New 'gui' resource for regrtest.
752
753
Brett Cannon7317c1e2008-11-25 19:19:17 +0000754Docs
755----
756
Georg Brandl52b92cc2008-05-25 09:43:03 +0000757
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000758**(For information about older versions, consult the HISTORY file.)**