blob: 8e9fbf455b7c47356a86dc3ca4a97a8a86ba2139 [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
Benjamin Peterson7fe98532009-04-02 00:33:55 +000015- Issue #5499: The 'c' code for argument parsing functions now only accepts a
16 byte, and the 'C' code only accepts a unicode character.
17
Brett Cannon0759dd62009-04-01 18:13:07 +000018- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
19
Georg Brandlab6f2f62009-03-31 04:16:10 +000020- Fix a segfault when running test_exceptions with coverage, caused by
21 insufficient checks in accessors of Exception.__context__.
22
Guido van Rossum0ad59d42009-03-30 22:01:35 +000023- Issue #5604: non-ASCII characters in module name passed to
24 imp.find_module() were converted to UTF-8 while the path is
25 converted to the default filesystem encoding, causing nonsense.
26
Benjamin Peterson09832742009-03-26 17:15:46 +000027- Issue #5126: str.isprintable() returned False for space characters.
28
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +000029- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
30 the end sys.path, for compatibility with the system install of Python.
31
Antoine Pitrou3a652b12009-03-23 18:52:06 +000032- Issue #4688: Add a heuristic so that tuples and dicts containing only
33 untrackable objects are not tracked by the garbage collector. This can
34 reduce the size of collections and therefore the garbage collection overhead
35 on long-running programs, depending on their particular use of datatypes.
36
Mark Dickinson17e4fdd2009-03-23 18:44:57 +000037- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
38 improve its performance. Long divisions and remainder operations
39 are now between 50% and 150% faster.
40
Mark Dickinsonbd792642009-03-18 20:06:12 +000041- Issue #4258: Make it possible to use base 2**30 instead of base
42 2**15 for the internal representation of integers, for performance
43 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
44 --enable-big-digits option to configure, which overrides the
45 default. Add sys.int_info structseq to provide information about
46 the internal format.
47
Mark Dickinson081dfee2009-03-18 14:47:41 +000048- Issue #4474: PyUnicode_FromWideChar now converts characters outside
49 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
50 and sizeof(Py_UNICODE) == 2.
51
Eric Smith8ec90442009-03-14 12:29:34 +000052- Issue #5237: Allow auto-numbered fields in str.format(). For
53 example: '{} {}'.format(1, 2) == '1 2'.
54
Antoine Pitrou652e7072009-03-13 19:25:20 +000055- Issue #5392: when a very low recursion limit was set, the interpreter would
56 abort with a fatal error after the recursion limit was hit twice.
57
Benjamin Petersond1735892009-03-07 18:46:21 +000058Library
59-------
60
Georg Brandl33c28812009-04-01 23:07:29 +000061- Issue #5656: Fix the coverage reporting when running the test suite with
62 the -T argument.
63
Raymond Hettinger3f10a952009-04-01 19:05:50 +000064- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
65
Georg Brandl4ed72ac2009-04-01 04:28:33 +000066- Issue #5624: Fix the _winreg module name still used in several modules.
67
Benjamin Petersona1b49012009-03-31 23:11:32 +000068- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
69
Jesse Nollera9314042009-03-31 22:36:44 +000070- Issue #5619: Multiprocessing children disobey the debug flag and causes
71 popups on windows buildbots. Patch applied to work around this issue.
72
Jesse Noller32d68c22009-03-31 18:48:42 +000073- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
74
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +000075- Issue #5387: Fixed mmap.move crash by integer overflow.
76
Jesse Nollerf8d00852009-03-31 03:25:07 +000077- Issue #5261: Patch multiprocessing's semaphore.c to support context
78 manager use: "with multiprocessing.Lock()" works now.
79
Brett Cannon7f6b4f82009-03-30 21:30:26 +000080- Issue #5236: Change time.strptime() to only take strings. Didn't work with
81 bytes already but the failure was non-obvious.
82
Jesse Noller7af4ef82009-03-30 16:47:15 +000083- Issue #5177: Multiprocessing's SocketListener class now uses
84 socket.SO_REUSEADDR on all connections so that the user no longer needs
85 to wait 120 seconds for the socket to expire.
86
Benjamin Peterson48e24782009-03-29 13:02:52 +000087- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
88
Antoine Pitrou66994e12009-03-29 00:45:26 +000089- Issue #1174606: Calling read() without arguments of an unbounded file
90 (typically /dev/zero under Unix) could crash the interpreter.
91
Benjamin Peterson59406a92009-03-26 17:10:29 +000092- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
93 io.BufferedRandom have been deprecated for removal in Python 3.2.
94
Lars Gustäbel42e00912009-03-22 20:34:29 +000095- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
96 forever on incomplete input. That caused tarfile.open() to hang when used
97 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
98 partial bzip2 compressed data.
99
Mark Dickinson79f52032009-03-17 23:12:51 +0000100- Issue #2110: Add support for thousands separator and 'n' type
101 specifier to Decimal.__format__
102
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000103- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
104 '>' alignment characters.
105
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000106- The error detection code in FileIO.close() could fail to reflect the `errno`
107 value, and report it as -1 instead.
108
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000109- Issue #5016: FileIO.seekable() could return False if the file position
110 was negative when truncated to a C int. Patch by Victor Stinner.
111
Mark Dickinsonae681df2009-03-21 10:26:31 +0000112Extension Modules
113-----------------
114
115- Issue #5463: In struct module, remove deprecated overflow wrapping
116 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000117 struct.error instead of returning b'\xff\xff\xff\xff'. The
118 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
119 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000120
Benjamin Petersond1735892009-03-07 18:46:21 +0000121
Benjamin Petersona58a6262009-03-07 16:34:40 +0000122What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000123================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000124
Benjamin Petersona58a6262009-03-07 16:34:40 +0000125*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000126
127Core and Builtins
128-----------------
129
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000130- The io module has been reimplemented in C for speed.
131
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000132- Give dict views an informative __repr__.
133
Eric Smith5e5c0db2009-02-20 14:25:03 +0000134- Issue #5247: Improve error message when unknown format codes are
135 used when using str.format() with str, int, and float arguments.
136
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000137- Issue #5249: time.strftime returned malformed string when format string
138 contained non ascii character on windows.
139
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000140- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
141 source has already been decoded into str.
142
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000143- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
144 rotating the object pointer by 4 bits to the right.
145
Mark Dickinson87ec0852009-02-09 17:15:59 +0000146- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
147 it now forces its argument to double before testing for infinity.
148
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000149- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
150 returns a non-number type.
151
Benjamin Peterson87618552009-02-08 15:00:52 +0000152- Issue #5182: Removed memoryview.__str__.
153
Mark Dickinsonc008a172009-02-01 13:59:22 +0000154- Issue #1717: Removed builtin cmp() function, dropped tp_compare
155 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000156 the type definition cmpfunc. The tp_compare slot has been renamed
157 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000158
Raymond Hettingere8364232009-02-02 22:55:09 +0000159- Issue 1242657: the __len__() and __length_hint__() calls in several tools
160 were suppressing all exceptions. These include list() and bytearray().
161
Mark Dickinson1124e712009-01-28 21:25:58 +0000162- Issue #4707: round(x, n) now returns an integer if x is an integer.
163 Previously it returned a float.
164
Antoine Pitroub52ec782009-01-25 16:34:23 +0000165- Issue #4753: By enabling a configure option named '--with-computed-gotos'
166 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
167 evaluation loop is compiled with a new dispatch mechanism which gives
168 speedups of up to 20%, depending on the system, on various benchmarks.
169
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000170- Issue #4874: Most builtin decoders now reject unicode input.
171
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000172- Issue #4842: Don't allow trailing 'L' when constructing an integer
173 from a string.
174
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000175- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
176
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000177- Issue #4838: When a module is deallocated, free the memory backing the
178 optional module state data.
179
Mark Dickinson8055afd2009-01-17 10:04:45 +0000180- Issue #4910: Rename nb_long slot to nb_reserved, and change its
181 type to (void *).
182
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000183- Issue #4935: The overflow checking code in the expandtabs() method common
184 to str, bytes and bytearray could be optimized away by the compiler, letting
185 the interpreter segfault instead of raising an error.
186
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000187- Issue #3720: Fix a crash when an iterator modifies its class and removes its
188 __next__ method.
189
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000190- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
191 function no longer attempt to call the __long__ slot to convert an object
192 to an integer. Only the __int__ and __trunc__ slots are examined.
193
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000194- Issue #4893: Use NT threading on CE.
195
Martin v. Löwisec59d042009-01-12 07:59:10 +0000196- Issue #4915: Port sysmodule to Windows CE.
197
Antoine Pitrouab868312009-01-10 15:40:25 +0000198- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
199 common cases are optimized thanks to a dedicated fast path and a moderate
200 amount of loop unrolling.
201
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000202- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
203 collecting the oldest generation) so that allocating lots of objects without
204 destroying them does not show quadratic performance. Based on a proposal by
205 Martin von Löwis at
206 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
207
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000208- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000209 having been closed (for instance, a read() call could return some
210 previously buffered data). Patch by Dmitry Vasiliev.
211
Antoine Pitrou05608432009-01-09 18:53:14 +0000212- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
213 flag to work properly. Furthermore, when specifying -u, the text stdout
214 and stderr streams have line-by-line buffering enabled (the default being
215 to buffer arbitrary chunks of data).
216
Raymond Hettinger35631532009-01-09 03:58:09 +0000217- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
218 instead of ints (reducing its size from 4 to 8 times thereby reducing
219 Python's overall memory).
220
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000221- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
222 an existing .py counterpart, override the co_filename attributes of all
223 code objects if the original filename is obsolete (which can happen if the
224 file has been renamed, moved, or if it is accessed through different paths).
225 Patch by Ziga Seilnacht and Jean-Paul Calderone.
226
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000227- Issue #4580: Fix slicing of memoryviews when the item size is greater than
228 one byte. Also fixes the meaning of len() so that it returns the number of
229 items, rather than the size in bytes.
230
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000231- Issue #4075: Use OutputDebugStringW in Py_FatalError.
232
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000233- Issue #4747: When the terminal does not use utf-8, executing a script with
234 non-ascii characters in its name could fail with a "SyntaxError: None" error.
235
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000236- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000237 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000238
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000239- Issue #3680: Reference cycles created through a dict, set or deque iterator
240 did not get collected.
241
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000242- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
243 where the tp_hash and tp_dict slots are both NULL.
244
Georg Brandlccc47b62008-12-28 11:44:14 +0000245- Issue #4759: None is now allowed as the first argument of
246 bytearray.translate(). It was always allowed for bytes.translate().
247
Skip Montanaro80072cb2008-12-23 03:51:14 +0000248- Added test case to ensure attempts to read from a file opened for writing
249 fail.
250
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000251- Issue #3106: Speedup some comparisons (str/str and int/int).
252
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000253- Issue #2183: Simplify and optimize bytecode for list, dict and set
254 comprehensions. Original patch for list comprehensions by Neal Norwitz.
255
Antoine Pitrou621601a2008-12-17 23:18:19 +0000256- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
257 print elapsed times, not only when some objects are uncollectable /
258 unreachable. Original patch by Neil Schemenauer.
259
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000260- Issue #3439: Add a bit_length method to int.
261
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000262- Issue #2173: When getting device encoding, check that return value of
263 nl_langinfo is not the empty string. This was causing silent build
264 failures on OS X.
265
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000266- Issue #4597: Fixed several opcodes that weren't always propagating
267 exceptions.
268
269- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000270 context manager returns a value that cannot be converted to a bool.
271
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000272- Issue #4445: Replace "sizeof(PyBytesObject)" with
273 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
274 bytes instances. On a typical machine this saves 3 bytes of memory
275 (on average) per allocation of a bytes instance.
276
Christian Heimesa872de52008-12-05 08:26:55 +0000277- Issue #4533: File read operation was dreadfully slow due to a slowly
278 growing read buffer. Fixed by using the same growth rate algorithm as
279 Python 2.x.
280
Antoine Pitrou5504e892008-12-06 21:27:53 +0000281- Issue #4509: Various issues surrounding resize of bytearray objects to
282 which there are buffer exports (e.g. memoryview instances).
283
Georg Brandlf9734072008-12-07 15:30:06 +0000284- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
285 method on file objects with closefd=False. The file descriptor is still
286 kept open but the file object behaves like a closed file. The ``FileIO``
287 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000288
Antoine Pitroubc420402008-12-07 20:14:49 +0000289- Issue #4569: Interpreter crash when mutating a memoryview with an item size
290 larger than 1.
291
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000292- Issue #4748: Lambda generators no longer return a value.
293
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000294- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
295
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000296Library
297-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000298
Brett Cannonf47e84c2009-04-01 16:06:01 +0000299- Issue #1665206 (partially): Move imports in cgitb to the top of the module
300 instead of performing them in functions. Helps prevent import deadlocking in
301 threads.
302
R. David Murraye59482e2009-04-01 03:42:00 +0000303- Issue #2522: locale.format now checks its first argument to ensure it has
304 been passed only one pattern, avoiding mysterious errors where it appeared
305 that it was failing to do localization.
306
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000307- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
308 Brandl.
309
Antoine Pitrou350370c2009-03-14 00:13:13 +0000310- Issue #1222: locale.format() bug when the thousands separator is a space
311 character.
312
Tarek Ziadé516db942009-03-11 12:52:00 +0000313- Issue #5472: Fixed distutils.test_util tear down. Original patch by
314 Tim Golden.
315
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000316- collections.deque() objects now have a read-only attribute called maxlen.
317
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000318- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
319 it is has been populated and properly configured in order to prevent
320 window flashing.
321
Guilherme Polo56f5be52009-03-07 01:54:57 +0000322- Issue #4792: Prevent a segfault in _tkinter by using the
323 guaranteed to be safe interp argument given to the PythonCmd in place of
324 the Tcl interpreter taken from a PythonCmd_ClientData.
325
326- Issue #5193: Guarantee that tkinter.Text.search returns a string.
327
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000328- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
329 Original patch by Akira Kitada.
330
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000331- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
332
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000333- Issue #5385: Fixed mmap crash after resize failure on windows.
334
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000335- Issue #5179: Fixed subprocess handle leak on failure on windows.
336
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000337- PEP 372: Added collections.OrderedDict().
338
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000339- The _asdict() for method for namedtuples now returns an OrderedDict().
340
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000341- configparser now defaults to using an ordered dictionary.
342
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000343- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
344 import guess_extension`` was used.
345
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000346- Issue #1733986: Fixed mmap crash in accessing elements of second map object
347 with same tagname but larger size than first map. (Windows)
348
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000349- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
350 overrun.
351
Tarek Ziadéf0721222009-02-28 10:16:43 +0000352- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
353 bdist_rpm command.
354
355- Issue #5378: added --quiet option to Distutils bdist_rpm command.
356
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000357- Issue #5052: make Distutils compatible with 2.3 again.
358
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000359- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
360 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000361
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000362- Issue #5287: Add exception handling around findCaller() call to help out
363 IronPython.
364
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000365- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
366 The file was resized to wrong size.
367
368- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
369
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000370- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000371 from the package_data and the data_files metadata.
372
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000373- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000374 support.TempdirManager, to avoid writing in the tests directory.
375
Tarek Ziadé68c50952009-02-13 23:04:17 +0000376- Issue #4524: distutils build_script command failed with --with-suffix=3.
377 Initial patch by Amaury Forgeot d'Arc.
378
Tarek Ziadé811d6242009-02-13 22:26:15 +0000379- Issue #2461: added tests for distutils.util
380
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000381- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
382 which inherited from numbers.py which did not have __slots__ defined. The
383 numbers hierarchy now has its own __slots__ declarations.
384
Antoine Pitroub353c122009-02-11 00:39:14 +0000385- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
386 encoding.
387
Thomas Heller465c8022009-02-10 18:59:04 +0000388- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
389 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
390
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000391- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
392 under NT and OS2. Patch by Philip Jenvey.
393
Brett Cannonbefb14f2009-02-10 02:10:16 +0000394- Issue #5128: Make compileall properly inspect bytecode to determine if needs
395 to be recreated. This avoids a timing hole thanks to the old reliance on the
396 ctime of the files involved.
397
Guilherme Polob681df42009-02-09 22:33:59 +0000398- Issue #5122: Synchronize tk load failure check to prevent a potential
399 deadlock.
400
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000401- Issue #1818: collections.namedtuple() now supports a keyword argument
402 'rename' which lets invalid fieldnames be automatically converted to
403 positional names in the form, _1, _2, ...
404
Guilherme Poloae098992009-02-09 16:44:24 +0000405- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
406
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000407- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
408 public documented method ``ZipImporter.get_filename()``.
409
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000410- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
411 the execution of packages by looking for and executing a ``__main__``
412 submodule when a package name is supplied. Initial patch by Andi
413 Vajda.
414
Guilherme Polo491aee22009-02-06 23:16:11 +0000415- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
416 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
417 Tkapp_Call when calling from a thread different than the one that created
418 the Tcl interpreter. Patch by Robert Hancock.
419
Eric Smith0e5b5622009-02-06 01:32:42 +0000420- Issue #4285: Change sys.version_info to be a named tuple. Patch by
421 Ross Light.
422
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000423- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000424 environment/Makefile. Patch by Douglas Greiman.
425
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000426- Issue #1276768: The verbose option was not used in the code of
427 distutils.file_util and distutils.dir_util.
428
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000429- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000430 --enabled-shared activated. Initial patch by Dave Peterson.
431
Guilherme Polo7f423952009-02-02 21:17:09 +0000432- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
433
Raymond Hettinger85602262009-02-03 04:19:10 +0000434- The shelve module now defaults to pickle protocol 3.
435
Brett Cannone61426e2009-01-30 01:31:34 +0000436- Fix a bug in the trace module where a bytes object from co_lnotab had its
437 items being passed through ord().
438
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000439- Issue #2047: shutil.move() could believe that its destination path was
440 inside its source path if it began with the same letters (e.g. "src" vs.
441 "src.new").
442
Guilherme Polo5f238482009-01-28 14:41:10 +0000443- Added the ttk module. See issue #2983: Ttk support for Tkinter.
444
Raymond Hettinger89e12962009-01-26 02:09:03 +0000445- Removed isSequenceType(), isMappingType, and isNumberType() from the
446 operator module; use the abstract base classes instead. Also removed
447 the repeat() function; use mul() instead.
448
Raymond Hettinger0f055172009-01-27 10:06:09 +0000449- Issue 5021: doctest.testfile() did not create __name__ and
450 collections.namedtuple() relied on __name__ being defined.
451
452- Backport importlib from Python 3.1. Only the import_module() function has
453 been backported to help facilitate transitions from 2.7 to 3.1.
454
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000455- Issue #1885: distutils. When running sdist with --formats=tar,gztar
456 the tar file was overriden by the gztar one.
457
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000458- Issue #4863: distutils.mwerkscompiler has been removed.
459
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000460- Added a new itertools functions: combinations_with_replacement()
461 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000462
Raymond Hettinger30729212009-02-12 06:28:27 +0000463- Issue 5032: added a step argument to itertools.count() and
464 allowed non-integer arguments.
465
Jesse Noller41faa542009-01-25 03:45:53 +0000466- Fix and properly document the multiprocessing module's logging
467 support, expose the internal levels and provide proper usage
468 examples.
469
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000470- Issue #1672332: fix unpickling of subnormal floats, which was
471 producing a ValueError on some platforms.
472
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000473- Issue #3881: Help Tcl to load even when started through the
474 unreadable local symlink to "Program Files" on Vista.
475
Martin v. Löwis59e47792009-01-24 14:10:07 +0000476- Issue #4710: Extract directories properly in the zipfile module;
477 allow adding directories to a zipfile.
478
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000479- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000480 --without-threads argument. When this occurs, _multiprocessing will
481 be disabled, and not compiled.
482
Antoine Pitrou08838b62009-01-21 00:55:13 +0000483- Issue #5008: When a file is opened in append mode with the new IO library,
484 do an explicit seek to the end of file (so that e.g. tell() returns the
485 file size rather than 0). This is consistent with the behaviour of the
486 traditional 2.x file object.
487
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000488- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
489 parameter was set.
490
Mark Dickinson8dd05142009-01-20 20:43:58 +0000491- Issue #4842: Always append a trailing 'L' when pickling longs using
492 pickle protocol 0. When reading, the 'L' is optional.
493
Brett Cannonafccd632009-01-20 02:21:27 +0000494- Add the importlib package.
495
Jesse Noller9a0fc972009-01-18 21:12:58 +0000496- Issue #4301: Patch the logging module to add processName support, remove
497 _check_logger_class from multiprocessing.
498
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000499- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000500 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000501
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000502- Issue #4959: inspect.formatargspec now works for keyword only arguments
503 without defaults.
504
Jesse Noller6214edd2009-01-19 16:23:53 +0000505- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
506 for *nix machines for negative handles and large int handles. Without this check
507 it is possible to segfault the interpreter.
508
Jesse Nollerb0516a62009-01-18 03:11:38 +0000509- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
510 in sharedctypes.py.
511
512- Issue #1225107: inspect.isclass() returned True for instances with a custom
513 __getattr__.
514
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000515- Issue #3826 and #4791: The socket module now closes the underlying socket
516 appropriately when it is being used via socket.makefile() objects
517 rather than delaying the close by waiting for garbage collection to do it.
518
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000519- Issue #1696199: Add collections.Counter() for rapid and convenient
520 counting.
521
Antoine Pitrou308705e2009-01-10 16:22:51 +0000522- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
523
Thomas Heller5e4e4272009-01-08 09:34:20 +0000524- Issue #4867: Fixed a crash in ctypes when passing a string to a
525 function without defining argtypes.
526
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000527- Issue #4272: Add an optional argument to the GzipFile constructor to override
528 the timestamp in the gzip stream. The default value remains the current time.
529 The information can be used by e.g. gunzip when decompressing. Patch by
530 Jacques Frechet.
531
Mark Dickinson315a20a2009-01-04 21:34:18 +0000532- Restore Python 2.3 compatibility for decimal.py.
533
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000534- Issue #3638: Remove functions from _tkinter module level that depend on
535 TkappObject to work with multiple threads.
536
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000537- Issue #4718: Adapt the wsgiref package so that it actually works with
538 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000539 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
540
Raymond Hettinger771ed762009-01-03 19:20:32 +0000541- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
542 to the decimal module.
543
Georg Brandl3a9b0622009-01-03 22:07:57 +0000544- Fractions.from_float() no longer loses precision for integers too big to
545 cast as floats.
546
Mark Dickinsonf9236412009-01-02 23:23:21 +0000547- Issue #4812: add missing underscore prefix to some internal-use-only
548 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
549
Georg Brandl3a9b0622009-01-03 22:07:57 +0000550- Issue 4790: The nsmallest() and nlargest() functions in the heapq module
551 did unnecessary work in the common case where no key function was specified.
552
Georg Brandlb1441c72009-01-03 22:33:39 +0000553- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
554 the function is not a generator.
555
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000556- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
557 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000558
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000559- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000560 function. Original patch by Thomas Heller.
561
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000562- Issue #3767: Convert Tk object to string in tkColorChooser.
563
Martin v. Löwise354d782008-12-29 16:03:04 +0000564- Issue #3248: Allow placing ScrolledText in a PanedWindow.
565
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000566- Issue #4444: Allow assertRaises() to be used as a context handler, so that
567 the code under test can be written inline if more practical.
568
Georg Brandldb7b6b92009-01-01 15:53:14 +0000569- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
570 works as expected in the interactive environment.
571
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000572- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
573 Gabriel Genellina.
574
Antoine Pitrou180a3362008-12-14 16:36:46 +0000575- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
576 boundary.
577
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000578- Issue #4223: inspect.getsource() will now correctly display source code
579 for packages loaded via zipimport (or any other conformant PEP 302
580 loader). Original patch by Alexander Belopolsky.
581
582- Issue #4201: pdb can now access and display source code loaded via
583 zipimport (or any other conformant PEP 302 loader). Original patch by
584 Alexander Belopolsky.
585
586- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
587 302 conformant loader) will now work correctly in most cases (they
588 are still subject to the constraints that exist for all code running
589 from inside a module loaded via a PEP 302 loader and attempting to
590 perform IO operations based on __file__). Original patch by
591 Alexander Belopolsky.
592
593- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
594 allows backporting to maintenance branches. Original patch by
595 Alexander Belopolsky.
596
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000597- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
598 a non-ASCII letter.
599
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000600- Issue #4616: TarFile.utime(): Restore directory times on Windows.
601
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000602- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
603 codec cannot be found. This is for compatibility with the builtin behavior.
604
Facundo Batista708d5812008-12-11 04:20:07 +0000605- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
606 give correct results in the case where one argument is a quiet NaN
607 and the other is a finite number that requires rounding.
608
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000609- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
610 libs.
611
Georg Brandlf9734072008-12-07 15:30:06 +0000612- Added the subprocess.check_call_output() convenience function to get output
613 from a subprocess on success or raise an exception on error.
614
615- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
616 support unusual filenames (such as those containing semi-colons) in
617 Content-Disposition headers.
618
619- Issue #4384: Added logging integration with warnings module using
620 captureWarnings(). This change includes a NullHandler which does nothing;
621 it will be of use to library developers who want to avoid the "No handlers
622 could be found for logger XXX" message which can appear if the library user
623 doesn't configure logging.
624
625- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
626 exception.
627
Georg Brandleee31162008-12-07 15:15:22 +0000628- Issue #4529: fix the parser module's validation of try-except-finally
629 statements.
630
631- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
632 not a malformed option.
633
634- Added the subprocess.check_output() convenience function to get output
635 from a subprocess on success or raise an exception on error.
636
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000637- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
638 the corresponding tests now pass.
639
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000640- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
641 it was calling the wrong open() function.
642
Fred Drake9a0a65b2008-12-04 19:24:50 +0000643- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
644 support unusual filenames (such as those containing semi-colons) in
645 Content-Disposition headers.
646
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000647- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
648 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
649
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000650- Issue #5104: The socket module now raises OverflowError when 16-bit port and
651 protocol numbers are supplied outside the allowed 0-65536 range on bind()
652 and getservbyport().
653
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000654Tools/Demos
655-----------
656
Antoine Pitrou8a681222009-02-07 17:13:31 +0000657- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
658 and make it 2.6-compatible.
659
Guilherme Poloa7d27972009-01-28 16:06:51 +0000660- Ttk demos added in Demo/tkinter/ttk/
661
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000662- Issue #4677: add two list comprehension tests to pybench.
663
Georg Brandlb1441c72009-01-03 22:33:39 +0000664
665Build
666-----
667
Matthias Klose906785c2009-02-22 23:18:38 +0000668- Link the shared python library with $(MODLIBS).
669
Martin v. Löwis11f72102009-02-10 13:13:30 +0000670- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
671
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000672- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
673
Martin v. Löwise97637d2009-01-11 09:45:11 +0000674- Issue #4895: Use _strdup on Windows CE.
675
Georg Brandlb1441c72009-01-03 22:33:39 +0000676- Issue #4472: "configure --enable-shared" now works on OSX
677
678- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
679
680- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
681
682- Issue #4289: Remove Cancel button from AdvancedDlg.
683
684- Issue #1656675: Register a drop handler for .py* files on Windows.
685
686- Issue #4120: Exclude manifest from extension modules in VS2008.
687
688- Issue #4091: Install pythonxy.dll in system32 again.
689
690- Issue #4018: Disable "for me" installations on Vista.
691
692- Issue #3758: Add ``patchcheck`` build target to .PHONY.
693
694- Issue #4204: Fixed module build errors on FreeBSD 4.
695
696
697C-API
698-----
699
Mark Dickinson21776072009-02-10 16:13:25 +0000700- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
701 for negative arguments. Previously, it raised TypeError.
702
Georg Brandlb1441c72009-01-03 22:33:39 +0000703- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
704
705- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
706 the GIL is released, or owned by another thread.
707
708- Issue #4122: On Windows, fix a compilation error when using the
709 Py_UNICODE_ISSPACE macro in an extension module.
710
711
Mark Dickinsone675f082008-12-11 21:56:00 +0000712Extension Modules
713-----------------
714
Gregory P. Smith365a1862009-02-12 07:35:29 +0000715- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
716 supporting objects as input no matter how it was compiled (built in
717 implementations or external openssl library).
718
Mark Dickinson29500f62009-01-15 15:36:10 +0000719- Issue #4397: Fix occasional test_socket failure on OS X.
720
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000721- Issue #4279: Fix build of parsermodule under Cygwin.
722
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000723- Issue #4751: hashlib now releases the GIL when hashing large buffers
724 (with a hardwired threshold of 2048 bytes), allowing better parallelization
725 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
726
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000727- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
728
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000729- Issue #4738: Each zlib object now has a separate lock, allowing to compress
730 or decompress several streams at once on multi-CPU systems. Also, the GIL
731 is now released when computing the CRC of a large buffer. Patch by ebfe.
732
Georg Brandlb1441c72009-01-03 22:33:39 +0000733- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
734
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000735- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
736
Mark Dickinsone675f082008-12-11 21:56:00 +0000737- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
738 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000739
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000740- Issue #4583: array.array would not always prohibit resizing when a buffer
741 has been exported, resulting in an interpreter crash when accessing the
742 buffer.
743
Martin v. Löwis841edad2008-11-30 10:36:49 +0000744
Jack Diederiche0cbd692009-04-01 04:27:09 +0000745- Issue #5228: Make functools.partial objects can now be pickled.
746
Guilherme Polo9de29af2009-01-28 20:40:48 +0000747Tests
748-----
749
R. David Murraya21e4ca2009-03-31 23:16:50 +0000750- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
751 that should cause a test to be skipped are now done using import_module
752 from test support, which does the conversion.
753
Guilherme Polo9de29af2009-01-28 20:40:48 +0000754- Issue #5083: New 'gui' resource for regrtest.
755
756
Brett Cannon7317c1e2008-11-25 19:19:17 +0000757Docs
758----
759
Georg Brandl52b92cc2008-05-25 09:43:03 +0000760
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000761**(For information about older versions, consult the HISTORY file.)**