blob: 9d190ff8890ee3cdeb72a24338185c68b516e841 [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
Mark Dickinson4eb88b32009-05-11 16:41:34 +00007What's New in Python 3.1 release candidate 1?
8=============================================
Benjamin Petersonaccdca52009-05-06 23:26:59 +00009
10*Release date: XXXX-XX-XX*
11
12Core and Builtins
13-----------------
14
Eric Smith41669ca2009-05-23 14:23:22 +000015- Issue #6089: Fixed str.format with certain invalid field specifiers
16 that would raise SystemError.
17
Mark Dickinson6b1e43b2009-05-20 18:41:04 +000018- Issue #5829: complex("1e500") no longer raises OverflowError. This
19 makes it consistent with float("1e500") and interpretation of real
20 and imaginary literals.
21
Hirokazu Yamamoto8223c242009-05-17 04:21:53 +000022- Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
23
R. David Murraydd226ea2009-05-13 12:27:21 +000024- Issue #5994: the marshal module now has docstrings.
25
Mark Dickinsond1ec8b22009-05-11 15:45:15 +000026- Issue #5981: Fix three minor inf/nan issues in float.fromhex:
27 (1) inf and nan strings with trailing whitespace were incorrectly
28 rejected; (2) parsing of strings representing infinities and nans
29 was locale aware; and (3) the interpretation of fromhex('-nan')
30 didn't match that of float('-nan').
31
Benjamin Petersonaccdca52009-05-06 23:26:59 +000032Library
33-------
34
R. David Murray87e20742009-05-23 01:30:26 +000035- Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
36 Patch by Farhan Ahmad, test by Marcin Bachry.
37
Antoine Pitrou6e610062009-05-15 17:04:50 +000038- Issue #2116: Weak references and weak dictionaries now support copy()ing and
39 deepcopy()ing.
40
Antoine Pitrouc1d09362009-05-15 12:15:51 +000041- Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
42
Antoine Pitrou37d1c182009-05-14 21:54:00 +000043- Issue #5918: Fix a crash in the parser module.
44
Antoine Pitrou2ca24f02009-05-14 21:30:46 +000045- Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
46
Antoine Pitroue4501852009-05-14 18:55:55 +000047- Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
48 library. This means, for example, that opening an UTF-16 text file in
49 append mode doesn't add a BOM at the end of the file if the file isn't
50 empty.
51
R. David Murray74b89242009-05-13 17:33:03 +000052- Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
53 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
54 corrects a pydoc regression.
55
R. David Murray99352742009-05-07 18:24:38 +000056- Issue 5955: aifc's close method did not close the file it wrapped,
57 now it does. This also means getfp method now returns the real fp.
58
Benjamin Petersonaccdca52009-05-06 23:26:59 +000059
Martin v. Löwisdb1c3992009-05-23 10:38:26 +000060Extension Modules
61-----------------
62
63- Issue #6093: Fix off-by-one error in locale.strxfrm.
64
Brett Cannon1262e7c2009-05-11 01:47:11 +000065Tests
66-----
67
68- Issue 5442: Tests for importlib were not properly skipping case-sensitivity
69 tests on darwin even when the OS was installed on a case-sensitive
70 filesystem. Also fixed tests that should not be run when
71 sys.dont_write_bytecode is true.
72
73
Benjamin Petersonbd35b032009-04-04 23:16:41 +000074What's New in Python 3.1 beta 1?
75================================
76
Benjamin Peterson5c5f3de2009-05-06 20:43:28 +000077*Release date: 2009-05-06*
Benjamin Petersonbd35b032009-04-04 23:16:41 +000078
79Core and Builtins
80-----------------
81
Mark Dickinson865e01a2009-05-07 16:37:01 +000082- Issue #5914: Add new C API function PyOS_string_to_double, and
83 deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
84
Eric Smith741191f2009-05-06 13:08:15 +000085- Issue #3382: float.__format__, complex.__format__, and %-formatting
86 no longer map 'F' to 'f'. Because of issue #5859 (below), this only
87 affects nan -> NAN and inf -> INF.
88
Mark Hammond5a607a32009-05-06 08:04:54 +000089- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
90 in all operations, including splitdrive, split, etc. splitunc() now issues
91 a PendingDeprecation warning.
92
Eric Smith63376222009-05-05 14:04:18 +000093- Issue #5920: For float.__format__, change the behavior with the
94 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
95 to be like 'g' but with at least one decimal point and with a
96 default precision of 12. Previously, the behavior the same but with
97 a default precision of 6. This more closely matches str(), and
98 reduces surprises when adding alignment flags to the empty
99 presentation type. This also affects the new complex.__format__ in
100 the same way.
101
Martin v. Löwis011e8422009-05-05 04:43:17 +0000102- Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
103
R. David Murrayb18500d2009-05-04 22:59:07 +0000104- Issue #5890: in subclasses of 'property' the __doc__ attribute was
105 shadowed by classtype's, even if it was None. property now
106 inserts the __doc__ into the subclass instance __dict__.
107
Antoine Pitrou244651a2009-05-04 18:56:13 +0000108- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
109 sequences. Patch by Nick Barnes and Victor Stinner.
110
Martin v. Löwise0a2b722009-05-10 08:08:56 +0000111- Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
Martin v. Löwisdb12d452009-05-02 18:52:14 +0000112
Benjamin Petersond2e0c792009-05-01 20:40:59 +0000113- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
114 received a new method, detach(). detach() disconnects the underlying stream
115 from the buffer or text IO and returns it.
116
Mark Dickinson33841c32009-05-01 15:37:04 +0000117- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
118 floats with absolute value over 1e50. Also remove length
119 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
120 12.34 no longer raise an exception.
Mark Dickinsonf489caf2009-05-01 11:42:00 +0000121
Eric Smith741191f2009-05-06 13:08:15 +0000122- Issue #1588: Add complex.__format__. For example,
Eric Smith58a42242009-04-30 01:00:33 +0000123 format(complex(1, 2./3), '.5') now produces a sensible result.
124
Mark Dickinsond3ca5572009-04-29 18:47:07 +0000125- Issue #5864: Fix empty format code formatting for floats so that it
126 never gives more than the requested number of significant digits.
127
Eric Smith6dc46f52009-04-27 20:39:49 +0000128- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
129 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
130
Eric Smithcc32a112009-04-26 21:35:14 +0000131- Issue #5835: Deprecate PyOS_ascii_formatd.
132
Martin v. Löwis71efeb72009-04-26 01:02:07 +0000133- Issue #4971: Fix titlecase for characters that are their own
134 titlecase, but not their own uppercase.
135
Benjamin Peterson193152c2009-04-25 01:08:45 +0000136- Issue #5283: Setting __class__ in __del__ caused a segfault.
137
Mark Dickinsonad476da2009-04-23 19:14:16 +0000138- Issue #5816: complex(repr(z)) now recovers z exactly, even when
139 z involves nans, infs or negative zeros.
140
Mark Dickinson4a16e3a2009-04-23 19:15:48 +0000141- Issue #3166: Make int -> float conversions correctly rounded.
Mark Dickinsonc6300392009-04-20 21:38:00 +0000142
Mark Dickinsone6a076d2009-04-18 11:48:33 +0000143- Issue #1869 (and many duplicates): make round(x, n) correctly
144 rounded for a float x, by using the decimal <-> binary conversions
145 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
146 consistently agrees with format(x, '.2f').
147
Benjamin Petersonae937c02009-04-18 20:54:08 +0000148- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
149 some builtin types.
150
Eric Smith0923d1d2009-04-16 20:16:10 +0000151- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
152
Eric Smith35e84722009-04-16 20:21:28 +0000153- Issue #5515: str.format() type 'n' combined with commas and leading
154 zeros no longer gives odd results with ints and floats.
Eric Smith0923d1d2009-04-16 20:16:10 +0000155
156- Implement PEP 378, Format Specifier for Thousands Separator, for
157 floats.
158
Mark Dickinson3370cce2009-04-17 22:40:53 +0000159- The str function switches to exponential notation at
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000160 1e11, not 1e12. This avoids printing 13 significant digits in
161 situations where only 12 of them are correct. Example problem
162 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
163 long time.)
164
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000165- Issue #1580: On most platforms, use a 'short' float repr: for a
166 finite float x, repr(x) now outputs a string based on the shortest
167 sequence of decimal digits that rounds to x. Previous behaviour was
168 to output 17 significant digits and then strip trailing zeros.
Mark Dickinson3370cce2009-04-17 22:40:53 +0000169 Another minor difference is that the new repr switches to
170 exponential notation at 1e16 instead of the previous 1e17; this
171 avoids misleading output in some cases.
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000172
173 There's a new sys attribute sys.float_repr_style, which takes
174 the value 'short' to indicate that we're using short float repr,
175 and 'legacy' if the short float repr isn't available for one
176 reason or another.
177
178 The float repr change involves incorporating David Gay's 'perfect
179 rounding' code into the Python core (it's in Python/dtoa.c). As a
180 secondary consequence, all string-to-float and float-to-string
181 conversions (including all float formatting operations) will be
182 correctly rounded on these platforms.
183
184 See issue 1580 discussions for details of platforms for which
185 this change does not apply.
186
Benjamin Peterson2808d3c2009-04-15 21:34:27 +0000187- Issue #5759: float() didn't call __float__ on str subclasses.
188
Georg Brandlabc38772009-04-12 15:51:51 +0000189- The string.maketrans() function is deprecated; there is a new static method
190 maketrans() on the bytes and bytearray classes. This removes confusion about
191 the types string.maketrans() is supposed to work with, and mirrors the
192 methods available on the str class.
193
R. David Murraydc6da8a2009-04-09 22:16:43 +0000194- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
195 its clarity and its speed.
196
Matthias Klose091c7b12009-04-07 13:24:27 +0000197- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
198 to avoid compiler warnings.
199
Walter Dörwald8dc33d52009-05-06 14:41:26 +0000200- Issue #3739: The unicode-internal encoder now reports the number of characters
201 consumed like any other encoder (instead of the number of bytes).
202
Benjamin Peterson0b4915e2009-04-25 21:11:45 +0000203Installation
204------------
205
206- Issue #5756: Install idle and pydoc with a 3 suffix.
207
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000208Library
209-------
210
Tarek Ziadédd9f65f2009-05-06 07:26:24 +0000211- Issue #5940: distutils.command.build_clib.check_library_list was not doing
212 the right type checkings anymore.
213
Thomas Heller00cfc372009-05-05 19:04:40 +0000214- Issue #4875: On win32, ctypes.util.find_library does no longer
215 return directories.
216
Georg Brandl243ad662009-05-05 09:00:19 +0000217- Issue #5142: Add the ability to skip modules while stepping to pdb.
218
Georg Brandl991f9202009-05-05 08:31:54 +0000219- Issue #1309567: Fix linecache behavior of stripping subdirectories when
220 looking for files given by a relative filename.
221
Georg Brandleaa84ef2009-05-05 08:14:33 +0000222- Issue #5923: Update the ``turtle`` module to version 1.1, add two new
223 turtle demos in Demo/turtle.
224
Antoine Pitrou3c33e082009-05-04 21:21:36 +0000225- Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
226 extracting a file to the root directory.
227
Hirokazu Yamamotobbb9be72009-05-04 05:56:46 +0000228- Issue #5913: os.listdir() should fail for empty path on windows.
229
Antoine Pitroua9f48a02009-05-02 21:41:14 +0000230- Issue #5084: unpickling now interns the attribute names of pickled objects,
231 saving memory and avoiding growth in size of subsequent pickles. Proposal
232 and original patch by Jake McGuire.
233
Benjamin Petersonc6b607d2009-05-02 12:36:44 +0000234- The json module now works exclusively with str and not bytes.
235
Gregory P. Smithe54dff52009-05-01 22:13:48 +0000236- Issue #3959: The ipaddr module has been added to the standard library.
237 Contributed by Google.
238
Antoine Pitrou7fff0962009-05-01 21:09:44 +0000239- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
240 error when a named pipe is encountered, rather than blocking infinitely.
241
Raymond Hettinger1f0db402009-04-29 00:38:08 +0000242- Issue #5857: tokenize.tokenize() now returns named tuples.
243
Thomas Hellerc1edc2d2009-04-28 19:55:58 +0000244- Issue #4305: ctypes should now build again on mipsel-linux-gnu
245
Antoine Pitrou7a0fedf2009-04-27 22:31:40 +0000246- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
247 string is already in normalized form, by performing a quick check beforehand.
248 Original patch by Rauli Ruohonen.
249
Antoine Pitrou57f3d932009-04-27 21:04:19 +0000250- Issue #5853: calling a function of the mimetypes module from several threads
251 at once could hit the recursion limit if the mimetypes database hadn't been
252 initialized before.
253
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000254- Issue #5854: Updated __all__ to include some missing names and remove some
255 names which should not be exported.
256
Thomas Heller34596a92009-04-24 20:50:00 +0000257- Issue #3102: All global symbols that the _ctypes extension defines
258 are now prefixed with 'Py' or '_ctypes'.
259
260- Issue #5041: ctypes does now allow pickling wide character.
261
Mark Dickinsond4d95f82009-04-24 14:06:19 +0000262- Issue #5812: For the two-argument form of the Fraction constructor,
263 Fraction(m, n), m and n are permitted to be arbitrary Rational
264 instances.
265
Mark Dickinsoncf63f2f2009-04-22 17:50:21 +0000266- Issue #5812: Fraction('1e6') is valid: more generally, any string
267 that's valid for float() is now valid for Fraction(), with the
268 exception of strings representing NaNs and infinities.
269
Antoine Pitroucf4c7492009-04-19 00:09:36 +0000270- Issue #5734: BufferedRWPair was poorly tested and had several glaring
271 bugs. Patch by Brian Quinlan.
272
R. David Murray9e94ddf2009-04-13 17:06:33 +0000273- Issue #1161031: fix readwrite select flag handling: POLLPRI now
274 results in a handle_expt_event call, not handle_read_event, and POLLERR
275 and POLLNVAL now call handle_close, not handle_expt_event. Also,
276 dispatcher now has an 'ignore_log_types' attribute for suppressing
277 log messages, which is set to 'warning' by default.
278
Matthias Klosea3d29e82009-04-07 13:13:10 +0000279- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
280 new arguments introduced in 2.5.
281
Walter Dörwald1b08b302009-04-25 14:13:56 +0000282- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
283 makeunicodedata.py and regenerated the Unicode database (This fixes
284 u'\u1d79'.lower() == '\x00').
285
Matthias Klose535336f2009-04-07 13:49:45 +0000286Extension Modules
287-----------------
288
Benjamin Petersone04b6272009-05-04 22:25:21 +0000289- Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
290 pwd.
291
Mark Dickinsonea835e72009-04-19 20:40:33 +0000292- Issue #5463: In struct module, remove deprecated float coercion
293 for integer type codes: struct.pack('L', 0.3) should now raise
294 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
295 The version number has been bumped to 0.3.
296
Matthias Klose535336f2009-04-07 13:49:45 +0000297- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
298 using Berkley-DB.
299
Nick Coghlan47384702009-04-22 16:13:36 +0000300Tests
301-----
302
303- Issue #5354: New test support function import_fresh_module() makes
304 it easy to import both normal and optimised versions of modules.
305 test_heapq and test_warnings have been adjusted to use it, tests for
306 other modules with both C and Python implementations in the stdlib
307 can be adjusted to use it over time.
308
Walter Dörwald4ba80132009-04-25 12:48:43 +0000309- Issue #5837: Certain sequences of calls to set() and unset() for
310 support.EnvironmentVarGuard objects restored the environment variables
311 incorrectly on __exit__.
312
Benjamin Petersonb173f782009-05-05 22:31:58 +0000313C-API
314-----
315
316- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
317
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000318
Benjamin Petersond1735892009-03-07 18:46:21 +0000319What's New in Python 3.1 alpha 2?
320=================================
321
Benjamin Peterson88f14352009-04-04 21:06:52 +0000322*Release date: 2009-4-4*
Benjamin Petersond1735892009-03-07 18:46:21 +0000323
324Core and Builtins
325-----------------
Benjamin Petersone099b372009-04-04 17:09:35 +0000326
Eric Smith1e1d7d22009-04-03 22:25:33 +0000327- Implement PEP 378, Format Specifier for Thousands Separator, for
328 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +0000329
Benjamin Peterson8f76b492009-04-03 22:22:42 +0000330- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
331
Benjamin Peterson7fe98532009-04-02 00:33:55 +0000332- Issue #5499: The 'c' code for argument parsing functions now only accepts a
333 byte, and the 'C' code only accepts a unicode character.
334
Georg Brandl406b3d82009-04-11 21:24:37 +0000335- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
336 when hitting the recursion limit under certain circumstances.
337
Brett Cannon0759dd62009-04-01 18:13:07 +0000338- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
339
Georg Brandlab6f2f62009-03-31 04:16:10 +0000340- Fix a segfault when running test_exceptions with coverage, caused by
341 insufficient checks in accessors of Exception.__context__.
342
Guido van Rossum0ad59d42009-03-30 22:01:35 +0000343- Issue #5604: non-ASCII characters in module name passed to
344 imp.find_module() were converted to UTF-8 while the path is
345 converted to the default filesystem encoding, causing nonsense.
346
Benjamin Peterson09832742009-03-26 17:15:46 +0000347- Issue #5126: str.isprintable() returned False for space characters.
348
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +0000349- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
350 the end sys.path, for compatibility with the system install of Python.
351
Antoine Pitrou3a652b12009-03-23 18:52:06 +0000352- Issue #4688: Add a heuristic so that tuples and dicts containing only
353 untrackable objects are not tracked by the garbage collector. This can
354 reduce the size of collections and therefore the garbage collection overhead
355 on long-running programs, depending on their particular use of datatypes.
356
Mark Dickinson17e4fdd2009-03-23 18:44:57 +0000357- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
358 improve its performance. Long divisions and remainder operations
359 are now between 50% and 150% faster.
360
Mark Dickinsonbd792642009-03-18 20:06:12 +0000361- Issue #4258: Make it possible to use base 2**30 instead of base
362 2**15 for the internal representation of integers, for performance
363 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
364 --enable-big-digits option to configure, which overrides the
365 default. Add sys.int_info structseq to provide information about
366 the internal format.
367
Mark Dickinson081dfee2009-03-18 14:47:41 +0000368- Issue #4474: PyUnicode_FromWideChar now converts characters outside
369 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
370 and sizeof(Py_UNICODE) == 2.
371
Eric Smith8ec90442009-03-14 12:29:34 +0000372- Issue #5237: Allow auto-numbered fields in str.format(). For
373 example: '{} {}'.format(1, 2) == '1 2'.
374
Antoine Pitrou652e7072009-03-13 19:25:20 +0000375- Issue #5392: when a very low recursion limit was set, the interpreter would
376 abort with a fatal error after the recursion limit was hit twice.
377
Matthias Klose042f1332009-04-04 14:32:42 +0000378- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
379 short file names.
380
Benjamin Petersond1735892009-03-07 18:46:21 +0000381Library
382-------
383
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000384- Issue #2625: added missing items() call to the for loop in
R. David Murray548ac412009-04-02 19:44:43 +0000385 mailbox.MH.get_message().
386
Hye-Shik Chang944820b2009-04-02 10:33:16 +0000387- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
388 error substitutions from non-strict codec error callbacks in
389 incrementalencoder and StreamWriter.
390
Georg Brandl33c28812009-04-01 23:07:29 +0000391- Issue #5656: Fix the coverage reporting when running the test suite with
392 the -T argument.
393
Raymond Hettinger3f10a952009-04-01 19:05:50 +0000394- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
395
Georg Brandl4ed72ac2009-04-01 04:28:33 +0000396- Issue #5624: Fix the _winreg module name still used in several modules.
397
Benjamin Petersona1b49012009-03-31 23:11:32 +0000398- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
399
Jesse Nollera9314042009-03-31 22:36:44 +0000400- Issue #5619: Multiprocessing children disobey the debug flag and causes
401 popups on windows buildbots. Patch applied to work around this issue.
402
Jesse Noller32d68c22009-03-31 18:48:42 +0000403- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
404
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +0000405- Issue #5387: Fixed mmap.move crash by integer overflow.
406
Jesse Nollerf8d00852009-03-31 03:25:07 +0000407- Issue #5261: Patch multiprocessing's semaphore.c to support context
408 manager use: "with multiprocessing.Lock()" works now.
409
Brett Cannon7f6b4f82009-03-30 21:30:26 +0000410- Issue #5236: Change time.strptime() to only take strings. Didn't work with
411 bytes already but the failure was non-obvious.
412
Jesse Noller7af4ef82009-03-30 16:47:15 +0000413- Issue #5177: Multiprocessing's SocketListener class now uses
414 socket.SO_REUSEADDR on all connections so that the user no longer needs
415 to wait 120 seconds for the socket to expire.
416
Benjamin Peterson48e24782009-03-29 13:02:52 +0000417- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
418
Antoine Pitrou66994e12009-03-29 00:45:26 +0000419- Issue #1174606: Calling read() without arguments of an unbounded file
420 (typically /dev/zero under Unix) could crash the interpreter.
421
Benjamin Peterson59406a92009-03-26 17:10:29 +0000422- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
423 io.BufferedRandom have been deprecated for removal in Python 3.2.
424
Lars Gustäbel42e00912009-03-22 20:34:29 +0000425- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
426 forever on incomplete input. That caused tarfile.open() to hang when used
427 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
428 partial bzip2 compressed data.
429
Mark Dickinson79f52032009-03-17 23:12:51 +0000430- Issue #2110: Add support for thousands separator and 'n' type
431 specifier to Decimal.__format__
432
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000433- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
434 '>' alignment characters.
435
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000436- The error detection code in FileIO.close() could fail to reflect the `errno`
437 value, and report it as -1 instead.
438
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000439- Issue #5016: FileIO.seekable() could return False if the file position
440 was negative when truncated to a C int. Patch by Victor Stinner.
441
Mark Dickinsonae681df2009-03-21 10:26:31 +0000442Extension Modules
443-----------------
444
Benjamin Petersone099b372009-04-04 17:09:35 +0000445- Issue #5391: mmap now deals exclusively with bytes.
446
Mark Dickinsonae681df2009-03-21 10:26:31 +0000447- Issue #5463: In struct module, remove deprecated overflow wrapping
448 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000449 struct.error instead of returning b'\xff\xff\xff\xff'. The
450 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
451 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000452
Benjamin Petersond1735892009-03-07 18:46:21 +0000453
Benjamin Petersona58a6262009-03-07 16:34:40 +0000454What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000455================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000456
Benjamin Petersona58a6262009-03-07 16:34:40 +0000457*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000458
459Core and Builtins
460-----------------
461
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000462- The io module has been reimplemented in C for speed.
463
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000464- Give dict views an informative __repr__.
465
Eric Smith5e5c0db2009-02-20 14:25:03 +0000466- Issue #5247: Improve error message when unknown format codes are
467 used when using str.format() with str, int, and float arguments.
468
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000469- Issue #5249: time.strftime returned malformed string when format string
470 contained non ascii character on windows.
471
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000472- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
473 source has already been decoded into str.
474
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000475- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
476 rotating the object pointer by 4 bits to the right.
477
Mark Dickinson87ec0852009-02-09 17:15:59 +0000478- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
479 it now forces its argument to double before testing for infinity.
480
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000481- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
482 returns a non-number type.
483
Benjamin Peterson87618552009-02-08 15:00:52 +0000484- Issue #5182: Removed memoryview.__str__.
485
Mark Dickinsonc008a172009-02-01 13:59:22 +0000486- Issue #1717: Removed builtin cmp() function, dropped tp_compare
487 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000488 the type definition cmpfunc. The tp_compare slot has been renamed
489 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000490
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000491- Issue #1242657: the __len__() and __length_hint__() calls in several tools
Raymond Hettingere8364232009-02-02 22:55:09 +0000492 were suppressing all exceptions. These include list() and bytearray().
493
Mark Dickinson1124e712009-01-28 21:25:58 +0000494- Issue #4707: round(x, n) now returns an integer if x is an integer.
495 Previously it returned a float.
496
Antoine Pitroub52ec782009-01-25 16:34:23 +0000497- Issue #4753: By enabling a configure option named '--with-computed-gotos'
498 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
499 evaluation loop is compiled with a new dispatch mechanism which gives
500 speedups of up to 20%, depending on the system, on various benchmarks.
501
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000502- Issue #4874: Most builtin decoders now reject unicode input.
503
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000504- Issue #4842: Don't allow trailing 'L' when constructing an integer
505 from a string.
506
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000507- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
508
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000509- Issue #4838: When a module is deallocated, free the memory backing the
510 optional module state data.
511
Mark Dickinson8055afd2009-01-17 10:04:45 +0000512- Issue #4910: Rename nb_long slot to nb_reserved, and change its
513 type to (void *).
514
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000515- Issue #4935: The overflow checking code in the expandtabs() method common
516 to str, bytes and bytearray could be optimized away by the compiler, letting
517 the interpreter segfault instead of raising an error.
518
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000519- Issue #3720: Fix a crash when an iterator modifies its class and removes its
520 __next__ method.
521
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000522- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
523 function no longer attempt to call the __long__ slot to convert an object
524 to an integer. Only the __int__ and __trunc__ slots are examined.
525
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000526- Issue #4893: Use NT threading on CE.
527
Martin v. Löwisec59d042009-01-12 07:59:10 +0000528- Issue #4915: Port sysmodule to Windows CE.
529
Antoine Pitrouab868312009-01-10 15:40:25 +0000530- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
531 common cases are optimized thanks to a dedicated fast path and a moderate
532 amount of loop unrolling.
533
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000534- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
535 collecting the oldest generation) so that allocating lots of objects without
536 destroying them does not show quadratic performance. Based on a proposal by
537 Martin von Löwis at
538 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
539
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000540- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000541 having been closed (for instance, a read() call could return some
542 previously buffered data). Patch by Dmitry Vasiliev.
543
Antoine Pitrou05608432009-01-09 18:53:14 +0000544- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
545 flag to work properly. Furthermore, when specifying -u, the text stdout
546 and stderr streams have line-by-line buffering enabled (the default being
547 to buffer arbitrary chunks of data).
548
Raymond Hettinger35631532009-01-09 03:58:09 +0000549- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
550 instead of ints (reducing its size from 4 to 8 times thereby reducing
551 Python's overall memory).
552
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000553- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
554 an existing .py counterpart, override the co_filename attributes of all
555 code objects if the original filename is obsolete (which can happen if the
556 file has been renamed, moved, or if it is accessed through different paths).
557 Patch by Ziga Seilnacht and Jean-Paul Calderone.
558
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000559- Issue #4580: Fix slicing of memoryviews when the item size is greater than
560 one byte. Also fixes the meaning of len() so that it returns the number of
561 items, rather than the size in bytes.
562
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000563- Issue #4075: Use OutputDebugStringW in Py_FatalError.
564
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000565- Issue #4747: When the terminal does not use utf-8, executing a script with
566 non-ascii characters in its name could fail with a "SyntaxError: None" error.
567
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000568- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000569 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000570
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000571- Issue #3680: Reference cycles created through a dict, set or deque iterator
572 did not get collected.
573
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000574- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
575 where the tp_hash and tp_dict slots are both NULL.
576
Georg Brandlccc47b62008-12-28 11:44:14 +0000577- Issue #4759: None is now allowed as the first argument of
578 bytearray.translate(). It was always allowed for bytes.translate().
579
Skip Montanaro80072cb2008-12-23 03:51:14 +0000580- Added test case to ensure attempts to read from a file opened for writing
581 fail.
582
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000583- Issue #3106: Speedup some comparisons (str/str and int/int).
584
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000585- Issue #2183: Simplify and optimize bytecode for list, dict and set
586 comprehensions. Original patch for list comprehensions by Neal Norwitz.
587
Antoine Pitrou621601a2008-12-17 23:18:19 +0000588- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
589 print elapsed times, not only when some objects are uncollectable /
590 unreachable. Original patch by Neil Schemenauer.
591
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000592- Issue #3439: Add a bit_length method to int.
593
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000594- Issue #2173: When getting device encoding, check that return value of
595 nl_langinfo is not the empty string. This was causing silent build
596 failures on OS X.
597
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000598- Issue #4597: Fixed several opcodes that weren't always propagating
599 exceptions.
600
601- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000602 context manager returns a value that cannot be converted to a bool.
603
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000604- Issue #4445: Replace "sizeof(PyBytesObject)" with
605 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
606 bytes instances. On a typical machine this saves 3 bytes of memory
607 (on average) per allocation of a bytes instance.
608
Christian Heimesa872de52008-12-05 08:26:55 +0000609- Issue #4533: File read operation was dreadfully slow due to a slowly
610 growing read buffer. Fixed by using the same growth rate algorithm as
611 Python 2.x.
612
Antoine Pitrou5504e892008-12-06 21:27:53 +0000613- Issue #4509: Various issues surrounding resize of bytearray objects to
614 which there are buffer exports (e.g. memoryview instances).
615
Georg Brandlf9734072008-12-07 15:30:06 +0000616- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
617 method on file objects with closefd=False. The file descriptor is still
618 kept open but the file object behaves like a closed file. The ``FileIO``
619 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000620
Antoine Pitroubc420402008-12-07 20:14:49 +0000621- Issue #4569: Interpreter crash when mutating a memoryview with an item size
622 larger than 1.
623
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000624- Issue #4748: Lambda generators no longer return a value.
625
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000626- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
627
Walter Dörwaldc1651a02009-05-03 22:55:55 +0000628- Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
629 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
630 step. This avoids problems with counting UTF-8 bytes that ignores the effect
631 of using the replace error handler in PyUnicode_DecodeUTF8().
632
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000633Library
634-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000635
Tarek Ziadé822eb842009-05-19 16:22:57 +0000636- Issue #6062: In distutils, fixed the package option of build_ext. Feedback
637 and tests on pywin32 by Tim Golden.
638
Tarek Ziadé93fb3aa2009-05-18 12:29:06 +0000639- Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
640
Tarek Ziadéd18a84e2009-05-18 08:07:46 +0000641- Issue #6046: Fixed the library extension when distutils build_ext is used
642 inplace. Initial patch by Roumen Petrov.
643
Tarek Ziadé5af55c62009-05-16 16:52:13 +0000644- Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
645 subcommand.
646
Tarek Ziadé4210c6e2009-05-14 20:20:47 +0000647- Issue #6022: a test file was created in the current working directory by
648 test_get_outputs in Distutils.
649
Tarek Ziadéff0e5002009-05-12 17:14:01 +0000650- Issue #5977: distutils build_ext.get_outputs was not taking into account the
651 inplace option. Initial patch by kxroberto.
652
Tarek Ziadé06fbee12009-05-10 10:34:01 +0000653- Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
654 for old-style extensions.
655
Tarek Ziadébe5b1b92009-05-09 10:09:11 +0000656- Issue #5976: Fixed Distutils test_check_environ.
657
Tarek Ziadé5662d3e2009-05-07 21:24:43 +0000658- Issue #5941: Distutils build_clib command was not working anymore because
659 of an incomplete costumization of the archiver command. Added ARFLAGS in the
660 Makefile besides AR and make Distutils use it. Original patch by David
661 Cournapeau.
662
R. David Murrayb507d2e2009-04-29 15:34:32 +0000663- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
664
Tarek Ziadé81623822009-04-29 08:07:44 +0000665- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
666 anymore.
667
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000668- Issue #5810: Fixed Distutils test_build_scripts so it uses
Tarek Ziadé939f9c82009-04-25 12:53:56 +0000669 sysconfig.get_config_vars.
670
Tarek Ziadé23336082009-04-25 12:39:56 +0000671- Issue #4951: Fixed failure in test_httpservers.
672
Thomas Hellerd3cfe992009-04-24 20:10:24 +0000673- Issue #5795: Fixed test_distutils failure on Debian ppc.
674
Tarek Ziadé822e1d42009-04-13 12:37:57 +0000675- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
676
Georg Brandl1f9fa312009-04-27 16:42:58 +0000677- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
678 a value in SafeConfigParser.
679
Tarek Ziadéf396ecf2009-04-11 15:00:43 +0000680- Issue #5732: added a new command in Distutils: check.
681
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000682- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
Tarek Ziadéa6191802009-04-09 22:02:39 +0000683 platforms. Initial patch by Paul Moore.
684
Tarek Ziadéf6370502009-04-05 22:57:21 +0000685- Issue #5095: Added bdist_msi to the list of bdist supported formats.
686 Initial fix by Steven Bethard.
687
Tarek Ziadé889b0aa2009-04-05 21:49:36 +0000688- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
689 Initial fix by Wayne Davison.
690
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000691- Issue #5694: removed spurious test output in Distutils (test_clean).
Tarek Ziadéea261632009-04-05 18:33:34 +0000692
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000693- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
Georg Brandl236f7972009-04-05 14:28:42 +0000694
Brett Cannonf47e84c2009-04-01 16:06:01 +0000695- Issue #1665206 (partially): Move imports in cgitb to the top of the module
696 instead of performing them in functions. Helps prevent import deadlocking in
697 threads.
698
R. David Murraye59482e2009-04-01 03:42:00 +0000699- Issue #2522: locale.format now checks its first argument to ensure it has
700 been passed only one pattern, avoiding mysterious errors where it appeared
701 that it was failing to do localization.
702
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000703- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
704 Brandl.
705
Antoine Pitrou350370c2009-03-14 00:13:13 +0000706- Issue #1222: locale.format() bug when the thousands separator is a space
707 character.
708
Tarek Ziadé516db942009-03-11 12:52:00 +0000709- Issue #5472: Fixed distutils.test_util tear down. Original patch by
710 Tim Golden.
711
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000712- collections.deque() objects now have a read-only attribute called maxlen.
713
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000714- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
715 it is has been populated and properly configured in order to prevent
716 window flashing.
717
Guilherme Polo56f5be52009-03-07 01:54:57 +0000718- Issue #4792: Prevent a segfault in _tkinter by using the
719 guaranteed to be safe interp argument given to the PythonCmd in place of
720 the Tcl interpreter taken from a PythonCmd_ClientData.
721
722- Issue #5193: Guarantee that tkinter.Text.search returns a string.
723
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000724- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
725 Original patch by Akira Kitada.
726
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000727- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
728
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000729- Issue #5385: Fixed mmap crash after resize failure on windows.
730
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000731- Issue #5179: Fixed subprocess handle leak on failure on windows.
732
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000733- PEP 372: Added collections.OrderedDict().
734
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000735- The _asdict() for method for namedtuples now returns an OrderedDict().
736
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000737- configparser now defaults to using an ordered dictionary.
738
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000739- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
740 import guess_extension`` was used.
741
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000742- Issue #1733986: Fixed mmap crash in accessing elements of second map object
743 with same tagname but larger size than first map. (Windows)
744
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000745- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
746 overrun.
747
Tarek Ziadéf0721222009-02-28 10:16:43 +0000748- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
749 bdist_rpm command.
750
751- Issue #5378: added --quiet option to Distutils bdist_rpm command.
752
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000753- Issue #5052: make Distutils compatible with 2.3 again.
754
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000755- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
756 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000757
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000758- Issue #5287: Add exception handling around findCaller() call to help out
759 IronPython.
760
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000761- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
762 The file was resized to wrong size.
763
764- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
765
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000766- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000767 from the package_data and the data_files metadata.
768
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000769- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000770 support.TempdirManager, to avoid writing in the tests directory.
771
Tarek Ziadé68c50952009-02-13 23:04:17 +0000772- Issue #4524: distutils build_script command failed with --with-suffix=3.
773 Initial patch by Amaury Forgeot d'Arc.
774
Tarek Ziadé811d6242009-02-13 22:26:15 +0000775- Issue #2461: added tests for distutils.util
776
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000777- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
778 which inherited from numbers.py which did not have __slots__ defined. The
779 numbers hierarchy now has its own __slots__ declarations.
780
Antoine Pitroub353c122009-02-11 00:39:14 +0000781- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
782 encoding.
783
Thomas Heller465c8022009-02-10 18:59:04 +0000784- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
785 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
786
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000787- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
788 under NT and OS2. Patch by Philip Jenvey.
789
Brett Cannonbefb14f2009-02-10 02:10:16 +0000790- Issue #5128: Make compileall properly inspect bytecode to determine if needs
791 to be recreated. This avoids a timing hole thanks to the old reliance on the
792 ctime of the files involved.
793
Guilherme Polob681df42009-02-09 22:33:59 +0000794- Issue #5122: Synchronize tk load failure check to prevent a potential
795 deadlock.
796
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000797- Issue #1818: collections.namedtuple() now supports a keyword argument
798 'rename' which lets invalid fieldnames be automatically converted to
799 positional names in the form, _1, _2, ...
800
Guilherme Poloae098992009-02-09 16:44:24 +0000801- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
802
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000803- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
804 public documented method ``ZipImporter.get_filename()``.
805
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000806- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
807 the execution of packages by looking for and executing a ``__main__``
808 submodule when a package name is supplied. Initial patch by Andi
809 Vajda.
810
Guilherme Polo491aee22009-02-06 23:16:11 +0000811- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
812 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
813 Tkapp_Call when calling from a thread different than the one that created
814 the Tcl interpreter. Patch by Robert Hancock.
815
Eric Smith0e5b5622009-02-06 01:32:42 +0000816- Issue #4285: Change sys.version_info to be a named tuple. Patch by
817 Ross Light.
818
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000819- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000820 environment/Makefile. Patch by Douglas Greiman.
821
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000822- Issue #1276768: The verbose option was not used in the code of
823 distutils.file_util and distutils.dir_util.
824
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000825- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000826 --enabled-shared activated. Initial patch by Dave Peterson.
827
Guilherme Polo7f423952009-02-02 21:17:09 +0000828- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
829
Raymond Hettinger85602262009-02-03 04:19:10 +0000830- The shelve module now defaults to pickle protocol 3.
831
Brett Cannone61426e2009-01-30 01:31:34 +0000832- Fix a bug in the trace module where a bytes object from co_lnotab had its
833 items being passed through ord().
834
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000835- Issue #2047: shutil.move() could believe that its destination path was
836 inside its source path if it began with the same letters (e.g. "src" vs.
837 "src.new").
838
Guilherme Polo5f238482009-01-28 14:41:10 +0000839- Added the ttk module. See issue #2983: Ttk support for Tkinter.
840
Raymond Hettinger89e12962009-01-26 02:09:03 +0000841- Removed isSequenceType(), isMappingType, and isNumberType() from the
842 operator module; use the abstract base classes instead. Also removed
843 the repeat() function; use mul() instead.
844
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000845- Issue #5021: doctest.testfile() did not create __name__ and
Raymond Hettinger0f055172009-01-27 10:06:09 +0000846 collections.namedtuple() relied on __name__ being defined.
847
848- Backport importlib from Python 3.1. Only the import_module() function has
849 been backported to help facilitate transitions from 2.7 to 3.1.
850
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000851- Issue #1885: distutils. When running sdist with --formats=tar,gztar
852 the tar file was overriden by the gztar one.
853
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000854- Issue #4863: distutils.mwerkscompiler has been removed.
855
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000856- Added a new itertools functions: combinations_with_replacement()
857 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000858
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000859- Issue #5032: added a step argument to itertools.count() and
Raymond Hettinger30729212009-02-12 06:28:27 +0000860 allowed non-integer arguments.
861
Jesse Noller41faa542009-01-25 03:45:53 +0000862- Fix and properly document the multiprocessing module's logging
863 support, expose the internal levels and provide proper usage
864 examples.
865
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000866- Issue #1672332: fix unpickling of subnormal floats, which was
867 producing a ValueError on some platforms.
868
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000869- Issue #3881: Help Tcl to load even when started through the
870 unreadable local symlink to "Program Files" on Vista.
871
Martin v. Löwis59e47792009-01-24 14:10:07 +0000872- Issue #4710: Extract directories properly in the zipfile module;
873 allow adding directories to a zipfile.
874
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000875- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000876 --without-threads argument. When this occurs, _multiprocessing will
877 be disabled, and not compiled.
878
Antoine Pitrou08838b62009-01-21 00:55:13 +0000879- Issue #5008: When a file is opened in append mode with the new IO library,
880 do an explicit seek to the end of file (so that e.g. tell() returns the
881 file size rather than 0). This is consistent with the behaviour of the
882 traditional 2.x file object.
883
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000884- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
885 parameter was set.
886
Mark Dickinson8dd05142009-01-20 20:43:58 +0000887- Issue #4842: Always append a trailing 'L' when pickling longs using
888 pickle protocol 0. When reading, the 'L' is optional.
889
Brett Cannonafccd632009-01-20 02:21:27 +0000890- Add the importlib package.
891
Jesse Noller9a0fc972009-01-18 21:12:58 +0000892- Issue #4301: Patch the logging module to add processName support, remove
893 _check_logger_class from multiprocessing.
894
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000895- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000896 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000897
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000898- Issue #4959: inspect.formatargspec now works for keyword only arguments
899 without defaults.
900
Jesse Noller6214edd2009-01-19 16:23:53 +0000901- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
902 for *nix machines for negative handles and large int handles. Without this check
903 it is possible to segfault the interpreter.
904
Jesse Nollerb0516a62009-01-18 03:11:38 +0000905- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
906 in sharedctypes.py.
907
908- Issue #1225107: inspect.isclass() returned True for instances with a custom
909 __getattr__.
910
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000911- Issue #3826 and #4791: The socket module now closes the underlying socket
912 appropriately when it is being used via socket.makefile() objects
913 rather than delaying the close by waiting for garbage collection to do it.
914
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000915- Issue #1696199: Add collections.Counter() for rapid and convenient
916 counting.
917
Antoine Pitrou308705e2009-01-10 16:22:51 +0000918- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
919
Thomas Heller5e4e4272009-01-08 09:34:20 +0000920- Issue #4867: Fixed a crash in ctypes when passing a string to a
921 function without defining argtypes.
922
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000923- Issue #4272: Add an optional argument to the GzipFile constructor to override
924 the timestamp in the gzip stream. The default value remains the current time.
925 The information can be used by e.g. gunzip when decompressing. Patch by
926 Jacques Frechet.
927
Mark Dickinson315a20a2009-01-04 21:34:18 +0000928- Restore Python 2.3 compatibility for decimal.py.
929
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000930- Issue #3638: Remove functions from _tkinter module level that depend on
931 TkappObject to work with multiple threads.
932
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000933- Issue #4718: Adapt the wsgiref package so that it actually works with
934 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000935 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
936
Raymond Hettinger771ed762009-01-03 19:20:32 +0000937- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
938 to the decimal module.
939
Georg Brandl3a9b0622009-01-03 22:07:57 +0000940- Fractions.from_float() no longer loses precision for integers too big to
941 cast as floats.
942
Mark Dickinsonf9236412009-01-02 23:23:21 +0000943- Issue #4812: add missing underscore prefix to some internal-use-only
944 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
945
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000946- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
Georg Brandl3a9b0622009-01-03 22:07:57 +0000947 did unnecessary work in the common case where no key function was specified.
948
Georg Brandlb1441c72009-01-03 22:33:39 +0000949- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
950 the function is not a generator.
951
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000952- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
953 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000954
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000955- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000956 function. Original patch by Thomas Heller.
957
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000958- Issue #3767: Convert Tk object to string in tkColorChooser.
959
Martin v. Löwise354d782008-12-29 16:03:04 +0000960- Issue #3248: Allow placing ScrolledText in a PanedWindow.
961
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000962- Issue #4444: Allow assertRaises() to be used as a context handler, so that
963 the code under test can be written inline if more practical.
964
Georg Brandldb7b6b92009-01-01 15:53:14 +0000965- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
966 works as expected in the interactive environment.
967
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000968- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
969 Gabriel Genellina.
970
Antoine Pitrou180a3362008-12-14 16:36:46 +0000971- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
972 boundary.
973
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000974- Issue #4223: inspect.getsource() will now correctly display source code
975 for packages loaded via zipimport (or any other conformant PEP 302
976 loader). Original patch by Alexander Belopolsky.
977
978- Issue #4201: pdb can now access and display source code loaded via
979 zipimport (or any other conformant PEP 302 loader). Original patch by
980 Alexander Belopolsky.
981
982- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
983 302 conformant loader) will now work correctly in most cases (they
984 are still subject to the constraints that exist for all code running
985 from inside a module loaded via a PEP 302 loader and attempting to
986 perform IO operations based on __file__). Original patch by
987 Alexander Belopolsky.
988
989- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
990 allows backporting to maintenance branches. Original patch by
991 Alexander Belopolsky.
992
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000993- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
994 a non-ASCII letter.
995
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000996- Issue #4616: TarFile.utime(): Restore directory times on Windows.
997
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000998- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
999 codec cannot be found. This is for compatibility with the builtin behavior.
1000
Facundo Batista708d5812008-12-11 04:20:07 +00001001- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
1002 give correct results in the case where one argument is a quiet NaN
1003 and the other is a finite number that requires rounding.
1004
Skip Montanaroc1ce2862008-12-06 17:25:02 +00001005- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1006 libs.
1007
Georg Brandlf9734072008-12-07 15:30:06 +00001008- Added the subprocess.check_call_output() convenience function to get output
1009 from a subprocess on success or raise an exception on error.
1010
1011- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1012 support unusual filenames (such as those containing semi-colons) in
1013 Content-Disposition headers.
1014
1015- Issue #4384: Added logging integration with warnings module using
1016 captureWarnings(). This change includes a NullHandler which does nothing;
1017 it will be of use to library developers who want to avoid the "No handlers
1018 could be found for logger XXX" message which can appear if the library user
1019 doesn't configure logging.
1020
1021- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1022 exception.
1023
Georg Brandleee31162008-12-07 15:15:22 +00001024- Issue #4529: fix the parser module's validation of try-except-finally
1025 statements.
1026
1027- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1028 not a malformed option.
1029
1030- Added the subprocess.check_output() convenience function to get output
1031 from a subprocess on success or raise an exception on error.
1032
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +00001033- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
1034 the corresponding tests now pass.
1035
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +00001036- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
1037 it was calling the wrong open() function.
1038
Fred Drake9a0a65b2008-12-04 19:24:50 +00001039- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1040 support unusual filenames (such as those containing semi-colons) in
1041 Content-Disposition headers.
1042
Matthias Klose2c7e3ee2009-01-10 17:08:25 +00001043- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1044 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1045
Benjamin Peterson5c6d7872009-02-06 02:40:07 +00001046- Issue #5104: The socket module now raises OverflowError when 16-bit port and
1047 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1048 and getservbyport().
1049
Jeroen Ruigrok van der Werven0a866942009-05-08 14:18:00 +00001050- Windows locale mapping updated to Vista.
1051
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001052Tools/Demos
1053-----------
1054
Antoine Pitrou8a681222009-02-07 17:13:31 +00001055- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
1056 and make it 2.6-compatible.
1057
Guilherme Poloa7d27972009-01-28 16:06:51 +00001058- Ttk demos added in Demo/tkinter/ttk/
1059
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001060- Issue #4677: add two list comprehension tests to pybench.
1061
Georg Brandlb1441c72009-01-03 22:33:39 +00001062
1063Build
1064-----
1065
Martin v. Löwis8482ef92009-05-05 16:14:30 +00001066- Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1067
Antoine Pitrou8966c992009-05-01 21:18:27 +00001068- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1069 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1070
Matthias Klose55708cc2009-04-30 08:06:49 +00001071- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1072 the order that backends for the dbm extension are checked.
1073
Matthias Klose906785c2009-02-22 23:18:38 +00001074- Link the shared python library with $(MODLIBS).
1075
Martin v. Löwis11f72102009-02-10 13:13:30 +00001076- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1077
Martin v. Löwisbc186a82009-02-02 15:32:22 +00001078- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1079
Martin v. Löwise97637d2009-01-11 09:45:11 +00001080- Issue #4895: Use _strdup on Windows CE.
1081
Georg Brandlb1441c72009-01-03 22:33:39 +00001082- Issue #4472: "configure --enable-shared" now works on OSX
1083
1084- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1085
1086- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1087
1088- Issue #4289: Remove Cancel button from AdvancedDlg.
1089
1090- Issue #1656675: Register a drop handler for .py* files on Windows.
1091
1092- Issue #4120: Exclude manifest from extension modules in VS2008.
1093
1094- Issue #4091: Install pythonxy.dll in system32 again.
1095
1096- Issue #4018: Disable "for me" installations on Vista.
1097
1098- Issue #3758: Add ``patchcheck`` build target to .PHONY.
1099
1100- Issue #4204: Fixed module build errors on FreeBSD 4.
1101
1102
1103C-API
1104-----
1105
Mark Dickinson21776072009-02-10 16:13:25 +00001106- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1107 for negative arguments. Previously, it raised TypeError.
1108
Georg Brandlb1441c72009-01-03 22:33:39 +00001109- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1110
1111- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1112 the GIL is released, or owned by another thread.
1113
1114- Issue #4122: On Windows, fix a compilation error when using the
1115 Py_UNICODE_ISSPACE macro in an extension module.
1116
1117
Mark Dickinsone675f082008-12-11 21:56:00 +00001118Extension Modules
1119-----------------
1120
Gregory P. Smith365a1862009-02-12 07:35:29 +00001121- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1122 supporting objects as input no matter how it was compiled (built in
1123 implementations or external openssl library).
1124
Mark Dickinson29500f62009-01-15 15:36:10 +00001125- Issue #4397: Fix occasional test_socket failure on OS X.
1126
Martin v. Löwisa9b54c72009-01-11 09:30:50 +00001127- Issue #4279: Fix build of parsermodule under Cygwin.
1128
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +00001129- Issue #4751: hashlib now releases the GIL when hashing large buffers
1130 (with a hardwired threshold of 2048 bytes), allowing better parallelization
1131 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
1132
Martin v. Löwis5c88d812009-01-02 20:47:48 +00001133- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1134
Antoine Pitrou31f30b12009-01-02 17:34:35 +00001135- Issue #4738: Each zlib object now has a separate lock, allowing to compress
1136 or decompress several streams at once on multi-CPU systems. Also, the GIL
1137 is now released when computing the CRC of a large buffer. Patch by ebfe.
1138
Georg Brandlb1441c72009-01-03 22:33:39 +00001139- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1140
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +00001141- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1142
Mark Dickinsone675f082008-12-11 21:56:00 +00001143- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1144 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +00001145
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +00001146- Issue #4583: array.array would not always prohibit resizing when a buffer
1147 has been exported, resulting in an interpreter crash when accessing the
1148 buffer.
1149
Martin v. Löwis841edad2008-11-30 10:36:49 +00001150
Jack Diederiche0cbd692009-04-01 04:27:09 +00001151- Issue #5228: Make functools.partial objects can now be pickled.
1152
Guilherme Polo9de29af2009-01-28 20:40:48 +00001153Tests
1154-----
1155
R. David Murraya21e4ca2009-03-31 23:16:50 +00001156- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001157 that should cause a test to be skipped are now done using import_module
R. David Murraya21e4ca2009-03-31 23:16:50 +00001158 from test support, which does the conversion.
1159
Guilherme Polo9de29af2009-01-28 20:40:48 +00001160- Issue #5083: New 'gui' resource for regrtest.
1161
1162
Brett Cannon7317c1e2008-11-25 19:19:17 +00001163Docs
1164----
1165
Georg Brandl52b92cc2008-05-25 09:43:03 +00001166
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001167**(For information about older versions, consult the HISTORY file.)**