blob: 611dbeae335dedf3e18e225c788eeb42823fc1b6 [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
Mark Dickinson6b1e43b2009-05-20 18:41:04 +000015- Issue #5829: complex("1e500") no longer raises OverflowError. This
16 makes it consistent with float("1e500") and interpretation of real
17 and imaginary literals.
18
Hirokazu Yamamoto8223c242009-05-17 04:21:53 +000019- Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
20
R. David Murraydd226ea2009-05-13 12:27:21 +000021- Issue #5994: the marshal module now has docstrings.
22
Mark Dickinsond1ec8b22009-05-11 15:45:15 +000023- Issue #5981: Fix three minor inf/nan issues in float.fromhex:
24 (1) inf and nan strings with trailing whitespace were incorrectly
25 rejected; (2) parsing of strings representing infinities and nans
26 was locale aware; and (3) the interpretation of fromhex('-nan')
27 didn't match that of float('-nan').
28
Benjamin Petersonaccdca52009-05-06 23:26:59 +000029Library
30-------
31
R. David Murray87e20742009-05-23 01:30:26 +000032- Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
33 Patch by Farhan Ahmad, test by Marcin Bachry.
34
Antoine Pitrou6e610062009-05-15 17:04:50 +000035- Issue #2116: Weak references and weak dictionaries now support copy()ing and
36 deepcopy()ing.
37
Antoine Pitrouc1d09362009-05-15 12:15:51 +000038- Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
39
Antoine Pitrou37d1c182009-05-14 21:54:00 +000040- Issue #5918: Fix a crash in the parser module.
41
Antoine Pitrou2ca24f02009-05-14 21:30:46 +000042- Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
43
Antoine Pitroue4501852009-05-14 18:55:55 +000044- Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
45 library. This means, for example, that opening an UTF-16 text file in
46 append mode doesn't add a BOM at the end of the file if the file isn't
47 empty.
48
R. David Murray74b89242009-05-13 17:33:03 +000049- Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
50 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
51 corrects a pydoc regression.
52
R. David Murray99352742009-05-07 18:24:38 +000053- Issue 5955: aifc's close method did not close the file it wrapped,
54 now it does. This also means getfp method now returns the real fp.
55
Benjamin Petersonaccdca52009-05-06 23:26:59 +000056
Martin v. Löwisdb1c3992009-05-23 10:38:26 +000057Extension Modules
58-----------------
59
60- Issue #6093: Fix off-by-one error in locale.strxfrm.
61
Brett Cannon1262e7c2009-05-11 01:47:11 +000062Tests
63-----
64
65- Issue 5442: Tests for importlib were not properly skipping case-sensitivity
66 tests on darwin even when the OS was installed on a case-sensitive
67 filesystem. Also fixed tests that should not be run when
68 sys.dont_write_bytecode is true.
69
70
Benjamin Petersonbd35b032009-04-04 23:16:41 +000071What's New in Python 3.1 beta 1?
72================================
73
Benjamin Peterson5c5f3de2009-05-06 20:43:28 +000074*Release date: 2009-05-06*
Benjamin Petersonbd35b032009-04-04 23:16:41 +000075
76Core and Builtins
77-----------------
78
Mark Dickinson865e01a2009-05-07 16:37:01 +000079- Issue #5914: Add new C API function PyOS_string_to_double, and
80 deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
81
Eric Smith741191f2009-05-06 13:08:15 +000082- Issue #3382: float.__format__, complex.__format__, and %-formatting
83 no longer map 'F' to 'f'. Because of issue #5859 (below), this only
84 affects nan -> NAN and inf -> INF.
85
Mark Hammond5a607a32009-05-06 08:04:54 +000086- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
87 in all operations, including splitdrive, split, etc. splitunc() now issues
88 a PendingDeprecation warning.
89
Eric Smith63376222009-05-05 14:04:18 +000090- Issue #5920: For float.__format__, change the behavior with the
91 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
92 to be like 'g' but with at least one decimal point and with a
93 default precision of 12. Previously, the behavior the same but with
94 a default precision of 6. This more closely matches str(), and
95 reduces surprises when adding alignment flags to the empty
96 presentation type. This also affects the new complex.__format__ in
97 the same way.
98
Martin v. Löwis011e8422009-05-05 04:43:17 +000099- Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
100
R. David Murrayb18500d2009-05-04 22:59:07 +0000101- Issue #5890: in subclasses of 'property' the __doc__ attribute was
102 shadowed by classtype's, even if it was None. property now
103 inserts the __doc__ into the subclass instance __dict__.
104
Antoine Pitrou244651a2009-05-04 18:56:13 +0000105- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
106 sequences. Patch by Nick Barnes and Victor Stinner.
107
Martin v. Löwise0a2b722009-05-10 08:08:56 +0000108- Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
Martin v. Löwisdb12d452009-05-02 18:52:14 +0000109
Benjamin Petersond2e0c792009-05-01 20:40:59 +0000110- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
111 received a new method, detach(). detach() disconnects the underlying stream
112 from the buffer or text IO and returns it.
113
Mark Dickinson33841c32009-05-01 15:37:04 +0000114- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
115 floats with absolute value over 1e50. Also remove length
116 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
117 12.34 no longer raise an exception.
Mark Dickinsonf489caf2009-05-01 11:42:00 +0000118
Eric Smith741191f2009-05-06 13:08:15 +0000119- Issue #1588: Add complex.__format__. For example,
Eric Smith58a42242009-04-30 01:00:33 +0000120 format(complex(1, 2./3), '.5') now produces a sensible result.
121
Mark Dickinsond3ca5572009-04-29 18:47:07 +0000122- Issue #5864: Fix empty format code formatting for floats so that it
123 never gives more than the requested number of significant digits.
124
Eric Smith6dc46f52009-04-27 20:39:49 +0000125- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
126 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
127
Eric Smithcc32a112009-04-26 21:35:14 +0000128- Issue #5835: Deprecate PyOS_ascii_formatd.
129
Martin v. Löwis71efeb72009-04-26 01:02:07 +0000130- Issue #4971: Fix titlecase for characters that are their own
131 titlecase, but not their own uppercase.
132
Benjamin Peterson193152c2009-04-25 01:08:45 +0000133- Issue #5283: Setting __class__ in __del__ caused a segfault.
134
Mark Dickinsonad476da2009-04-23 19:14:16 +0000135- Issue #5816: complex(repr(z)) now recovers z exactly, even when
136 z involves nans, infs or negative zeros.
137
Mark Dickinson4a16e3a2009-04-23 19:15:48 +0000138- Issue #3166: Make int -> float conversions correctly rounded.
Mark Dickinsonc6300392009-04-20 21:38:00 +0000139
Mark Dickinsone6a076d2009-04-18 11:48:33 +0000140- Issue #1869 (and many duplicates): make round(x, n) correctly
141 rounded for a float x, by using the decimal <-> binary conversions
142 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
143 consistently agrees with format(x, '.2f').
144
Benjamin Petersonae937c02009-04-18 20:54:08 +0000145- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
146 some builtin types.
147
Eric Smith0923d1d2009-04-16 20:16:10 +0000148- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
149
Eric Smith35e84722009-04-16 20:21:28 +0000150- Issue #5515: str.format() type 'n' combined with commas and leading
151 zeros no longer gives odd results with ints and floats.
Eric Smith0923d1d2009-04-16 20:16:10 +0000152
153- Implement PEP 378, Format Specifier for Thousands Separator, for
154 floats.
155
Mark Dickinson3370cce2009-04-17 22:40:53 +0000156- The str function switches to exponential notation at
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000157 1e11, not 1e12. This avoids printing 13 significant digits in
158 situations where only 12 of them are correct. Example problem
159 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
160 long time.)
161
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000162- Issue #1580: On most platforms, use a 'short' float repr: for a
163 finite float x, repr(x) now outputs a string based on the shortest
164 sequence of decimal digits that rounds to x. Previous behaviour was
165 to output 17 significant digits and then strip trailing zeros.
Mark Dickinson3370cce2009-04-17 22:40:53 +0000166 Another minor difference is that the new repr switches to
167 exponential notation at 1e16 instead of the previous 1e17; this
168 avoids misleading output in some cases.
Mark Dickinsonb08a53a2009-04-16 19:52:09 +0000169
170 There's a new sys attribute sys.float_repr_style, which takes
171 the value 'short' to indicate that we're using short float repr,
172 and 'legacy' if the short float repr isn't available for one
173 reason or another.
174
175 The float repr change involves incorporating David Gay's 'perfect
176 rounding' code into the Python core (it's in Python/dtoa.c). As a
177 secondary consequence, all string-to-float and float-to-string
178 conversions (including all float formatting operations) will be
179 correctly rounded on these platforms.
180
181 See issue 1580 discussions for details of platforms for which
182 this change does not apply.
183
Benjamin Peterson2808d3c2009-04-15 21:34:27 +0000184- Issue #5759: float() didn't call __float__ on str subclasses.
185
Georg Brandlabc38772009-04-12 15:51:51 +0000186- The string.maketrans() function is deprecated; there is a new static method
187 maketrans() on the bytes and bytearray classes. This removes confusion about
188 the types string.maketrans() is supposed to work with, and mirrors the
189 methods available on the str class.
190
R. David Murraydc6da8a2009-04-09 22:16:43 +0000191- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
192 its clarity and its speed.
193
Matthias Klose091c7b12009-04-07 13:24:27 +0000194- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
195 to avoid compiler warnings.
196
Walter Dörwald8dc33d52009-05-06 14:41:26 +0000197- Issue #3739: The unicode-internal encoder now reports the number of characters
198 consumed like any other encoder (instead of the number of bytes).
199
Benjamin Peterson0b4915e2009-04-25 21:11:45 +0000200Installation
201------------
202
203- Issue #5756: Install idle and pydoc with a 3 suffix.
204
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000205Library
206-------
207
Tarek Ziadédd9f65f2009-05-06 07:26:24 +0000208- Issue #5940: distutils.command.build_clib.check_library_list was not doing
209 the right type checkings anymore.
210
Thomas Heller00cfc372009-05-05 19:04:40 +0000211- Issue #4875: On win32, ctypes.util.find_library does no longer
212 return directories.
213
Georg Brandl243ad662009-05-05 09:00:19 +0000214- Issue #5142: Add the ability to skip modules while stepping to pdb.
215
Georg Brandl991f9202009-05-05 08:31:54 +0000216- Issue #1309567: Fix linecache behavior of stripping subdirectories when
217 looking for files given by a relative filename.
218
Georg Brandleaa84ef2009-05-05 08:14:33 +0000219- Issue #5923: Update the ``turtle`` module to version 1.1, add two new
220 turtle demos in Demo/turtle.
221
Antoine Pitrou3c33e082009-05-04 21:21:36 +0000222- Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
223 extracting a file to the root directory.
224
Hirokazu Yamamotobbb9be72009-05-04 05:56:46 +0000225- Issue #5913: os.listdir() should fail for empty path on windows.
226
Antoine Pitroua9f48a02009-05-02 21:41:14 +0000227- Issue #5084: unpickling now interns the attribute names of pickled objects,
228 saving memory and avoiding growth in size of subsequent pickles. Proposal
229 and original patch by Jake McGuire.
230
Benjamin Petersonc6b607d2009-05-02 12:36:44 +0000231- The json module now works exclusively with str and not bytes.
232
Gregory P. Smithe54dff52009-05-01 22:13:48 +0000233- Issue #3959: The ipaddr module has been added to the standard library.
234 Contributed by Google.
235
Antoine Pitrou7fff0962009-05-01 21:09:44 +0000236- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
237 error when a named pipe is encountered, rather than blocking infinitely.
238
Raymond Hettinger1f0db402009-04-29 00:38:08 +0000239- Issue #5857: tokenize.tokenize() now returns named tuples.
240
Thomas Hellerc1edc2d2009-04-28 19:55:58 +0000241- Issue #4305: ctypes should now build again on mipsel-linux-gnu
242
Antoine Pitrou7a0fedf2009-04-27 22:31:40 +0000243- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
244 string is already in normalized form, by performing a quick check beforehand.
245 Original patch by Rauli Ruohonen.
246
Antoine Pitrou57f3d932009-04-27 21:04:19 +0000247- Issue #5853: calling a function of the mimetypes module from several threads
248 at once could hit the recursion limit if the mimetypes database hadn't been
249 initialized before.
250
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000251- Issue #5854: Updated __all__ to include some missing names and remove some
252 names which should not be exported.
253
Thomas Heller34596a92009-04-24 20:50:00 +0000254- Issue #3102: All global symbols that the _ctypes extension defines
255 are now prefixed with 'Py' or '_ctypes'.
256
257- Issue #5041: ctypes does now allow pickling wide character.
258
Mark Dickinsond4d95f82009-04-24 14:06:19 +0000259- Issue #5812: For the two-argument form of the Fraction constructor,
260 Fraction(m, n), m and n are permitted to be arbitrary Rational
261 instances.
262
Mark Dickinsoncf63f2f2009-04-22 17:50:21 +0000263- Issue #5812: Fraction('1e6') is valid: more generally, any string
264 that's valid for float() is now valid for Fraction(), with the
265 exception of strings representing NaNs and infinities.
266
Antoine Pitroucf4c7492009-04-19 00:09:36 +0000267- Issue #5734: BufferedRWPair was poorly tested and had several glaring
268 bugs. Patch by Brian Quinlan.
269
R. David Murray9e94ddf2009-04-13 17:06:33 +0000270- Issue #1161031: fix readwrite select flag handling: POLLPRI now
271 results in a handle_expt_event call, not handle_read_event, and POLLERR
272 and POLLNVAL now call handle_close, not handle_expt_event. Also,
273 dispatcher now has an 'ignore_log_types' attribute for suppressing
274 log messages, which is set to 'warning' by default.
275
Matthias Klosea3d29e82009-04-07 13:13:10 +0000276- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
277 new arguments introduced in 2.5.
278
Walter Dörwald1b08b302009-04-25 14:13:56 +0000279- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
280 makeunicodedata.py and regenerated the Unicode database (This fixes
281 u'\u1d79'.lower() == '\x00').
282
Matthias Klose535336f2009-04-07 13:49:45 +0000283Extension Modules
284-----------------
285
Benjamin Petersone04b6272009-05-04 22:25:21 +0000286- Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
287 pwd.
288
Mark Dickinsonea835e72009-04-19 20:40:33 +0000289- Issue #5463: In struct module, remove deprecated float coercion
290 for integer type codes: struct.pack('L', 0.3) should now raise
291 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
292 The version number has been bumped to 0.3.
293
Matthias Klose535336f2009-04-07 13:49:45 +0000294- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
295 using Berkley-DB.
296
Nick Coghlan47384702009-04-22 16:13:36 +0000297Tests
298-----
299
300- Issue #5354: New test support function import_fresh_module() makes
301 it easy to import both normal and optimised versions of modules.
302 test_heapq and test_warnings have been adjusted to use it, tests for
303 other modules with both C and Python implementations in the stdlib
304 can be adjusted to use it over time.
305
Walter Dörwald4ba80132009-04-25 12:48:43 +0000306- Issue #5837: Certain sequences of calls to set() and unset() for
307 support.EnvironmentVarGuard objects restored the environment variables
308 incorrectly on __exit__.
309
Benjamin Petersonb173f782009-05-05 22:31:58 +0000310C-API
311-----
312
313- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
314
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000315
Benjamin Petersond1735892009-03-07 18:46:21 +0000316What's New in Python 3.1 alpha 2?
317=================================
318
Benjamin Peterson88f14352009-04-04 21:06:52 +0000319*Release date: 2009-4-4*
Benjamin Petersond1735892009-03-07 18:46:21 +0000320
321Core and Builtins
322-----------------
Benjamin Petersone099b372009-04-04 17:09:35 +0000323
Eric Smith1e1d7d22009-04-03 22:25:33 +0000324- Implement PEP 378, Format Specifier for Thousands Separator, for
325 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +0000326
Benjamin Peterson8f76b492009-04-03 22:22:42 +0000327- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
328
Benjamin Peterson7fe98532009-04-02 00:33:55 +0000329- Issue #5499: The 'c' code for argument parsing functions now only accepts a
330 byte, and the 'C' code only accepts a unicode character.
331
Georg Brandl406b3d82009-04-11 21:24:37 +0000332- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
333 when hitting the recursion limit under certain circumstances.
334
Brett Cannon0759dd62009-04-01 18:13:07 +0000335- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
336
Georg Brandlab6f2f62009-03-31 04:16:10 +0000337- Fix a segfault when running test_exceptions with coverage, caused by
338 insufficient checks in accessors of Exception.__context__.
339
Guido van Rossum0ad59d42009-03-30 22:01:35 +0000340- Issue #5604: non-ASCII characters in module name passed to
341 imp.find_module() were converted to UTF-8 while the path is
342 converted to the default filesystem encoding, causing nonsense.
343
Benjamin Peterson09832742009-03-26 17:15:46 +0000344- Issue #5126: str.isprintable() returned False for space characters.
345
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +0000346- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
347 the end sys.path, for compatibility with the system install of Python.
348
Antoine Pitrou3a652b12009-03-23 18:52:06 +0000349- Issue #4688: Add a heuristic so that tuples and dicts containing only
350 untrackable objects are not tracked by the garbage collector. This can
351 reduce the size of collections and therefore the garbage collection overhead
352 on long-running programs, depending on their particular use of datatypes.
353
Mark Dickinson17e4fdd2009-03-23 18:44:57 +0000354- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
355 improve its performance. Long divisions and remainder operations
356 are now between 50% and 150% faster.
357
Mark Dickinsonbd792642009-03-18 20:06:12 +0000358- Issue #4258: Make it possible to use base 2**30 instead of base
359 2**15 for the internal representation of integers, for performance
360 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
361 --enable-big-digits option to configure, which overrides the
362 default. Add sys.int_info structseq to provide information about
363 the internal format.
364
Mark Dickinson081dfee2009-03-18 14:47:41 +0000365- Issue #4474: PyUnicode_FromWideChar now converts characters outside
366 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
367 and sizeof(Py_UNICODE) == 2.
368
Eric Smith8ec90442009-03-14 12:29:34 +0000369- Issue #5237: Allow auto-numbered fields in str.format(). For
370 example: '{} {}'.format(1, 2) == '1 2'.
371
Antoine Pitrou652e7072009-03-13 19:25:20 +0000372- Issue #5392: when a very low recursion limit was set, the interpreter would
373 abort with a fatal error after the recursion limit was hit twice.
374
Matthias Klose042f1332009-04-04 14:32:42 +0000375- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
376 short file names.
377
Benjamin Petersond1735892009-03-07 18:46:21 +0000378Library
379-------
380
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000381- Issue #2625: added missing items() call to the for loop in
R. David Murray548ac412009-04-02 19:44:43 +0000382 mailbox.MH.get_message().
383
Hye-Shik Chang944820b2009-04-02 10:33:16 +0000384- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
385 error substitutions from non-strict codec error callbacks in
386 incrementalencoder and StreamWriter.
387
Georg Brandl33c28812009-04-01 23:07:29 +0000388- Issue #5656: Fix the coverage reporting when running the test suite with
389 the -T argument.
390
Raymond Hettinger3f10a952009-04-01 19:05:50 +0000391- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
392
Georg Brandl4ed72ac2009-04-01 04:28:33 +0000393- Issue #5624: Fix the _winreg module name still used in several modules.
394
Benjamin Petersona1b49012009-03-31 23:11:32 +0000395- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
396
Jesse Nollera9314042009-03-31 22:36:44 +0000397- Issue #5619: Multiprocessing children disobey the debug flag and causes
398 popups on windows buildbots. Patch applied to work around this issue.
399
Jesse Noller32d68c22009-03-31 18:48:42 +0000400- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
401
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +0000402- Issue #5387: Fixed mmap.move crash by integer overflow.
403
Jesse Nollerf8d00852009-03-31 03:25:07 +0000404- Issue #5261: Patch multiprocessing's semaphore.c to support context
405 manager use: "with multiprocessing.Lock()" works now.
406
Brett Cannon7f6b4f82009-03-30 21:30:26 +0000407- Issue #5236: Change time.strptime() to only take strings. Didn't work with
408 bytes already but the failure was non-obvious.
409
Jesse Noller7af4ef82009-03-30 16:47:15 +0000410- Issue #5177: Multiprocessing's SocketListener class now uses
411 socket.SO_REUSEADDR on all connections so that the user no longer needs
412 to wait 120 seconds for the socket to expire.
413
Benjamin Peterson48e24782009-03-29 13:02:52 +0000414- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
415
Antoine Pitrou66994e12009-03-29 00:45:26 +0000416- Issue #1174606: Calling read() without arguments of an unbounded file
417 (typically /dev/zero under Unix) could crash the interpreter.
418
Benjamin Peterson59406a92009-03-26 17:10:29 +0000419- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
420 io.BufferedRandom have been deprecated for removal in Python 3.2.
421
Lars Gustäbel42e00912009-03-22 20:34:29 +0000422- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
423 forever on incomplete input. That caused tarfile.open() to hang when used
424 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
425 partial bzip2 compressed data.
426
Mark Dickinson79f52032009-03-17 23:12:51 +0000427- Issue #2110: Add support for thousands separator and 'n' type
428 specifier to Decimal.__format__
429
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000430- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
431 '>' alignment characters.
432
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000433- The error detection code in FileIO.close() could fail to reflect the `errno`
434 value, and report it as -1 instead.
435
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000436- Issue #5016: FileIO.seekable() could return False if the file position
437 was negative when truncated to a C int. Patch by Victor Stinner.
438
Mark Dickinsonae681df2009-03-21 10:26:31 +0000439Extension Modules
440-----------------
441
Benjamin Petersone099b372009-04-04 17:09:35 +0000442- Issue #5391: mmap now deals exclusively with bytes.
443
Mark Dickinsonae681df2009-03-21 10:26:31 +0000444- Issue #5463: In struct module, remove deprecated overflow wrapping
445 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000446 struct.error instead of returning b'\xff\xff\xff\xff'. The
447 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
448 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000449
Benjamin Petersond1735892009-03-07 18:46:21 +0000450
Benjamin Petersona58a6262009-03-07 16:34:40 +0000451What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000452================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000453
Benjamin Petersona58a6262009-03-07 16:34:40 +0000454*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000455
456Core and Builtins
457-----------------
458
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000459- The io module has been reimplemented in C for speed.
460
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000461- Give dict views an informative __repr__.
462
Eric Smith5e5c0db2009-02-20 14:25:03 +0000463- Issue #5247: Improve error message when unknown format codes are
464 used when using str.format() with str, int, and float arguments.
465
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000466- Issue #5249: time.strftime returned malformed string when format string
467 contained non ascii character on windows.
468
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000469- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
470 source has already been decoded into str.
471
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000472- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
473 rotating the object pointer by 4 bits to the right.
474
Mark Dickinson87ec0852009-02-09 17:15:59 +0000475- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
476 it now forces its argument to double before testing for infinity.
477
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000478- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
479 returns a non-number type.
480
Benjamin Peterson87618552009-02-08 15:00:52 +0000481- Issue #5182: Removed memoryview.__str__.
482
Mark Dickinsonc008a172009-02-01 13:59:22 +0000483- Issue #1717: Removed builtin cmp() function, dropped tp_compare
484 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000485 the type definition cmpfunc. The tp_compare slot has been renamed
486 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000487
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000488- Issue #1242657: the __len__() and __length_hint__() calls in several tools
Raymond Hettingere8364232009-02-02 22:55:09 +0000489 were suppressing all exceptions. These include list() and bytearray().
490
Mark Dickinson1124e712009-01-28 21:25:58 +0000491- Issue #4707: round(x, n) now returns an integer if x is an integer.
492 Previously it returned a float.
493
Antoine Pitroub52ec782009-01-25 16:34:23 +0000494- Issue #4753: By enabling a configure option named '--with-computed-gotos'
495 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
496 evaluation loop is compiled with a new dispatch mechanism which gives
497 speedups of up to 20%, depending on the system, on various benchmarks.
498
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000499- Issue #4874: Most builtin decoders now reject unicode input.
500
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000501- Issue #4842: Don't allow trailing 'L' when constructing an integer
502 from a string.
503
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000504- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
505
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000506- Issue #4838: When a module is deallocated, free the memory backing the
507 optional module state data.
508
Mark Dickinson8055afd2009-01-17 10:04:45 +0000509- Issue #4910: Rename nb_long slot to nb_reserved, and change its
510 type to (void *).
511
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000512- Issue #4935: The overflow checking code in the expandtabs() method common
513 to str, bytes and bytearray could be optimized away by the compiler, letting
514 the interpreter segfault instead of raising an error.
515
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000516- Issue #3720: Fix a crash when an iterator modifies its class and removes its
517 __next__ method.
518
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000519- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
520 function no longer attempt to call the __long__ slot to convert an object
521 to an integer. Only the __int__ and __trunc__ slots are examined.
522
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000523- Issue #4893: Use NT threading on CE.
524
Martin v. Löwisec59d042009-01-12 07:59:10 +0000525- Issue #4915: Port sysmodule to Windows CE.
526
Antoine Pitrouab868312009-01-10 15:40:25 +0000527- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
528 common cases are optimized thanks to a dedicated fast path and a moderate
529 amount of loop unrolling.
530
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000531- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
532 collecting the oldest generation) so that allocating lots of objects without
533 destroying them does not show quadratic performance. Based on a proposal by
534 Martin von Löwis at
535 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
536
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000537- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000538 having been closed (for instance, a read() call could return some
539 previously buffered data). Patch by Dmitry Vasiliev.
540
Antoine Pitrou05608432009-01-09 18:53:14 +0000541- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
542 flag to work properly. Furthermore, when specifying -u, the text stdout
543 and stderr streams have line-by-line buffering enabled (the default being
544 to buffer arbitrary chunks of data).
545
Raymond Hettinger35631532009-01-09 03:58:09 +0000546- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
547 instead of ints (reducing its size from 4 to 8 times thereby reducing
548 Python's overall memory).
549
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000550- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
551 an existing .py counterpart, override the co_filename attributes of all
552 code objects if the original filename is obsolete (which can happen if the
553 file has been renamed, moved, or if it is accessed through different paths).
554 Patch by Ziga Seilnacht and Jean-Paul Calderone.
555
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000556- Issue #4580: Fix slicing of memoryviews when the item size is greater than
557 one byte. Also fixes the meaning of len() so that it returns the number of
558 items, rather than the size in bytes.
559
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000560- Issue #4075: Use OutputDebugStringW in Py_FatalError.
561
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000562- Issue #4747: When the terminal does not use utf-8, executing a script with
563 non-ascii characters in its name could fail with a "SyntaxError: None" error.
564
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000565- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000566 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000567
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000568- Issue #3680: Reference cycles created through a dict, set or deque iterator
569 did not get collected.
570
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000571- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
572 where the tp_hash and tp_dict slots are both NULL.
573
Georg Brandlccc47b62008-12-28 11:44:14 +0000574- Issue #4759: None is now allowed as the first argument of
575 bytearray.translate(). It was always allowed for bytes.translate().
576
Skip Montanaro80072cb2008-12-23 03:51:14 +0000577- Added test case to ensure attempts to read from a file opened for writing
578 fail.
579
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000580- Issue #3106: Speedup some comparisons (str/str and int/int).
581
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000582- Issue #2183: Simplify and optimize bytecode for list, dict and set
583 comprehensions. Original patch for list comprehensions by Neal Norwitz.
584
Antoine Pitrou621601a2008-12-17 23:18:19 +0000585- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
586 print elapsed times, not only when some objects are uncollectable /
587 unreachable. Original patch by Neil Schemenauer.
588
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000589- Issue #3439: Add a bit_length method to int.
590
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000591- Issue #2173: When getting device encoding, check that return value of
592 nl_langinfo is not the empty string. This was causing silent build
593 failures on OS X.
594
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000595- Issue #4597: Fixed several opcodes that weren't always propagating
596 exceptions.
597
598- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000599 context manager returns a value that cannot be converted to a bool.
600
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000601- Issue #4445: Replace "sizeof(PyBytesObject)" with
602 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
603 bytes instances. On a typical machine this saves 3 bytes of memory
604 (on average) per allocation of a bytes instance.
605
Christian Heimesa872de52008-12-05 08:26:55 +0000606- Issue #4533: File read operation was dreadfully slow due to a slowly
607 growing read buffer. Fixed by using the same growth rate algorithm as
608 Python 2.x.
609
Antoine Pitrou5504e892008-12-06 21:27:53 +0000610- Issue #4509: Various issues surrounding resize of bytearray objects to
611 which there are buffer exports (e.g. memoryview instances).
612
Georg Brandlf9734072008-12-07 15:30:06 +0000613- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
614 method on file objects with closefd=False. The file descriptor is still
615 kept open but the file object behaves like a closed file. The ``FileIO``
616 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000617
Antoine Pitroubc420402008-12-07 20:14:49 +0000618- Issue #4569: Interpreter crash when mutating a memoryview with an item size
619 larger than 1.
620
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000621- Issue #4748: Lambda generators no longer return a value.
622
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000623- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
624
Walter Dörwaldc1651a02009-05-03 22:55:55 +0000625- Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
626 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
627 step. This avoids problems with counting UTF-8 bytes that ignores the effect
628 of using the replace error handler in PyUnicode_DecodeUTF8().
629
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000630Library
631-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000632
Tarek Ziadé822eb842009-05-19 16:22:57 +0000633- Issue #6062: In distutils, fixed the package option of build_ext. Feedback
634 and tests on pywin32 by Tim Golden.
635
Tarek Ziadé93fb3aa2009-05-18 12:29:06 +0000636- Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
637
Tarek Ziadéd18a84e2009-05-18 08:07:46 +0000638- Issue #6046: Fixed the library extension when distutils build_ext is used
639 inplace. Initial patch by Roumen Petrov.
640
Tarek Ziadé5af55c62009-05-16 16:52:13 +0000641- Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
642 subcommand.
643
Tarek Ziadé4210c6e2009-05-14 20:20:47 +0000644- Issue #6022: a test file was created in the current working directory by
645 test_get_outputs in Distutils.
646
Tarek Ziadéff0e5002009-05-12 17:14:01 +0000647- Issue #5977: distutils build_ext.get_outputs was not taking into account the
648 inplace option. Initial patch by kxroberto.
649
Tarek Ziadé06fbee12009-05-10 10:34:01 +0000650- Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
651 for old-style extensions.
652
Tarek Ziadébe5b1b92009-05-09 10:09:11 +0000653- Issue #5976: Fixed Distutils test_check_environ.
654
Tarek Ziadé5662d3e2009-05-07 21:24:43 +0000655- Issue #5941: Distutils build_clib command was not working anymore because
656 of an incomplete costumization of the archiver command. Added ARFLAGS in the
657 Makefile besides AR and make Distutils use it. Original patch by David
658 Cournapeau.
659
R. David Murrayb507d2e2009-04-29 15:34:32 +0000660- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
661
Tarek Ziadé81623822009-04-29 08:07:44 +0000662- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
663 anymore.
664
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000665- Issue #5810: Fixed Distutils test_build_scripts so it uses
Tarek Ziadé939f9c82009-04-25 12:53:56 +0000666 sysconfig.get_config_vars.
667
Tarek Ziadé23336082009-04-25 12:39:56 +0000668- Issue #4951: Fixed failure in test_httpservers.
669
Thomas Hellerd3cfe992009-04-24 20:10:24 +0000670- Issue #5795: Fixed test_distutils failure on Debian ppc.
671
Tarek Ziadé822e1d42009-04-13 12:37:57 +0000672- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
673
Georg Brandl1f9fa312009-04-27 16:42:58 +0000674- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
675 a value in SafeConfigParser.
676
Tarek Ziadéf396ecf2009-04-11 15:00:43 +0000677- Issue #5732: added a new command in Distutils: check.
678
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000679- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
Tarek Ziadéa6191802009-04-09 22:02:39 +0000680 platforms. Initial patch by Paul Moore.
681
Tarek Ziadéf6370502009-04-05 22:57:21 +0000682- Issue #5095: Added bdist_msi to the list of bdist supported formats.
683 Initial fix by Steven Bethard.
684
Tarek Ziadé889b0aa2009-04-05 21:49:36 +0000685- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
686 Initial fix by Wayne Davison.
687
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000688- Issue #5694: removed spurious test output in Distutils (test_clean).
Tarek Ziadéea261632009-04-05 18:33:34 +0000689
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000690- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
Georg Brandl236f7972009-04-05 14:28:42 +0000691
Brett Cannonf47e84c2009-04-01 16:06:01 +0000692- Issue #1665206 (partially): Move imports in cgitb to the top of the module
693 instead of performing them in functions. Helps prevent import deadlocking in
694 threads.
695
R. David Murraye59482e2009-04-01 03:42:00 +0000696- Issue #2522: locale.format now checks its first argument to ensure it has
697 been passed only one pattern, avoiding mysterious errors where it appeared
698 that it was failing to do localization.
699
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000700- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
701 Brandl.
702
Antoine Pitrou350370c2009-03-14 00:13:13 +0000703- Issue #1222: locale.format() bug when the thousands separator is a space
704 character.
705
Tarek Ziadé516db942009-03-11 12:52:00 +0000706- Issue #5472: Fixed distutils.test_util tear down. Original patch by
707 Tim Golden.
708
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000709- collections.deque() objects now have a read-only attribute called maxlen.
710
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000711- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
712 it is has been populated and properly configured in order to prevent
713 window flashing.
714
Guilherme Polo56f5be52009-03-07 01:54:57 +0000715- Issue #4792: Prevent a segfault in _tkinter by using the
716 guaranteed to be safe interp argument given to the PythonCmd in place of
717 the Tcl interpreter taken from a PythonCmd_ClientData.
718
719- Issue #5193: Guarantee that tkinter.Text.search returns a string.
720
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000721- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
722 Original patch by Akira Kitada.
723
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000724- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
725
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000726- Issue #5385: Fixed mmap crash after resize failure on windows.
727
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000728- Issue #5179: Fixed subprocess handle leak on failure on windows.
729
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000730- PEP 372: Added collections.OrderedDict().
731
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000732- The _asdict() for method for namedtuples now returns an OrderedDict().
733
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000734- configparser now defaults to using an ordered dictionary.
735
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000736- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
737 import guess_extension`` was used.
738
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000739- Issue #1733986: Fixed mmap crash in accessing elements of second map object
740 with same tagname but larger size than first map. (Windows)
741
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000742- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
743 overrun.
744
Tarek Ziadéf0721222009-02-28 10:16:43 +0000745- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
746 bdist_rpm command.
747
748- Issue #5378: added --quiet option to Distutils bdist_rpm command.
749
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000750- Issue #5052: make Distutils compatible with 2.3 again.
751
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000752- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
753 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000754
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000755- Issue #5287: Add exception handling around findCaller() call to help out
756 IronPython.
757
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000758- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
759 The file was resized to wrong size.
760
761- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
762
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000763- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000764 from the package_data and the data_files metadata.
765
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000766- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000767 support.TempdirManager, to avoid writing in the tests directory.
768
Tarek Ziadé68c50952009-02-13 23:04:17 +0000769- Issue #4524: distutils build_script command failed with --with-suffix=3.
770 Initial patch by Amaury Forgeot d'Arc.
771
Tarek Ziadé811d6242009-02-13 22:26:15 +0000772- Issue #2461: added tests for distutils.util
773
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000774- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
775 which inherited from numbers.py which did not have __slots__ defined. The
776 numbers hierarchy now has its own __slots__ declarations.
777
Antoine Pitroub353c122009-02-11 00:39:14 +0000778- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
779 encoding.
780
Thomas Heller465c8022009-02-10 18:59:04 +0000781- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
782 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
783
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000784- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
785 under NT and OS2. Patch by Philip Jenvey.
786
Brett Cannonbefb14f2009-02-10 02:10:16 +0000787- Issue #5128: Make compileall properly inspect bytecode to determine if needs
788 to be recreated. This avoids a timing hole thanks to the old reliance on the
789 ctime of the files involved.
790
Guilherme Polob681df42009-02-09 22:33:59 +0000791- Issue #5122: Synchronize tk load failure check to prevent a potential
792 deadlock.
793
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000794- Issue #1818: collections.namedtuple() now supports a keyword argument
795 'rename' which lets invalid fieldnames be automatically converted to
796 positional names in the form, _1, _2, ...
797
Guilherme Poloae098992009-02-09 16:44:24 +0000798- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
799
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000800- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
801 public documented method ``ZipImporter.get_filename()``.
802
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000803- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
804 the execution of packages by looking for and executing a ``__main__``
805 submodule when a package name is supplied. Initial patch by Andi
806 Vajda.
807
Guilherme Polo491aee22009-02-06 23:16:11 +0000808- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
809 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
810 Tkapp_Call when calling from a thread different than the one that created
811 the Tcl interpreter. Patch by Robert Hancock.
812
Eric Smith0e5b5622009-02-06 01:32:42 +0000813- Issue #4285: Change sys.version_info to be a named tuple. Patch by
814 Ross Light.
815
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000816- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000817 environment/Makefile. Patch by Douglas Greiman.
818
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000819- Issue #1276768: The verbose option was not used in the code of
820 distutils.file_util and distutils.dir_util.
821
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000822- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000823 --enabled-shared activated. Initial patch by Dave Peterson.
824
Guilherme Polo7f423952009-02-02 21:17:09 +0000825- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
826
Raymond Hettinger85602262009-02-03 04:19:10 +0000827- The shelve module now defaults to pickle protocol 3.
828
Brett Cannone61426e2009-01-30 01:31:34 +0000829- Fix a bug in the trace module where a bytes object from co_lnotab had its
830 items being passed through ord().
831
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000832- Issue #2047: shutil.move() could believe that its destination path was
833 inside its source path if it began with the same letters (e.g. "src" vs.
834 "src.new").
835
Guilherme Polo5f238482009-01-28 14:41:10 +0000836- Added the ttk module. See issue #2983: Ttk support for Tkinter.
837
Raymond Hettinger89e12962009-01-26 02:09:03 +0000838- Removed isSequenceType(), isMappingType, and isNumberType() from the
839 operator module; use the abstract base classes instead. Also removed
840 the repeat() function; use mul() instead.
841
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000842- Issue #5021: doctest.testfile() did not create __name__ and
Raymond Hettinger0f055172009-01-27 10:06:09 +0000843 collections.namedtuple() relied on __name__ being defined.
844
845- Backport importlib from Python 3.1. Only the import_module() function has
846 been backported to help facilitate transitions from 2.7 to 3.1.
847
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000848- Issue #1885: distutils. When running sdist with --formats=tar,gztar
849 the tar file was overriden by the gztar one.
850
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000851- Issue #4863: distutils.mwerkscompiler has been removed.
852
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000853- Added a new itertools functions: combinations_with_replacement()
854 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000855
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000856- Issue #5032: added a step argument to itertools.count() and
Raymond Hettinger30729212009-02-12 06:28:27 +0000857 allowed non-integer arguments.
858
Jesse Noller41faa542009-01-25 03:45:53 +0000859- Fix and properly document the multiprocessing module's logging
860 support, expose the internal levels and provide proper usage
861 examples.
862
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000863- Issue #1672332: fix unpickling of subnormal floats, which was
864 producing a ValueError on some platforms.
865
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000866- Issue #3881: Help Tcl to load even when started through the
867 unreadable local symlink to "Program Files" on Vista.
868
Martin v. Löwis59e47792009-01-24 14:10:07 +0000869- Issue #4710: Extract directories properly in the zipfile module;
870 allow adding directories to a zipfile.
871
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000872- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000873 --without-threads argument. When this occurs, _multiprocessing will
874 be disabled, and not compiled.
875
Antoine Pitrou08838b62009-01-21 00:55:13 +0000876- Issue #5008: When a file is opened in append mode with the new IO library,
877 do an explicit seek to the end of file (so that e.g. tell() returns the
878 file size rather than 0). This is consistent with the behaviour of the
879 traditional 2.x file object.
880
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000881- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
882 parameter was set.
883
Mark Dickinson8dd05142009-01-20 20:43:58 +0000884- Issue #4842: Always append a trailing 'L' when pickling longs using
885 pickle protocol 0. When reading, the 'L' is optional.
886
Brett Cannonafccd632009-01-20 02:21:27 +0000887- Add the importlib package.
888
Jesse Noller9a0fc972009-01-18 21:12:58 +0000889- Issue #4301: Patch the logging module to add processName support, remove
890 _check_logger_class from multiprocessing.
891
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000892- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000893 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000894
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000895- Issue #4959: inspect.formatargspec now works for keyword only arguments
896 without defaults.
897
Jesse Noller6214edd2009-01-19 16:23:53 +0000898- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
899 for *nix machines for negative handles and large int handles. Without this check
900 it is possible to segfault the interpreter.
901
Jesse Nollerb0516a62009-01-18 03:11:38 +0000902- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
903 in sharedctypes.py.
904
905- Issue #1225107: inspect.isclass() returned True for instances with a custom
906 __getattr__.
907
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000908- Issue #3826 and #4791: The socket module now closes the underlying socket
909 appropriately when it is being used via socket.makefile() objects
910 rather than delaying the close by waiting for garbage collection to do it.
911
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000912- Issue #1696199: Add collections.Counter() for rapid and convenient
913 counting.
914
Antoine Pitrou308705e2009-01-10 16:22:51 +0000915- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
916
Thomas Heller5e4e4272009-01-08 09:34:20 +0000917- Issue #4867: Fixed a crash in ctypes when passing a string to a
918 function without defining argtypes.
919
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000920- Issue #4272: Add an optional argument to the GzipFile constructor to override
921 the timestamp in the gzip stream. The default value remains the current time.
922 The information can be used by e.g. gunzip when decompressing. Patch by
923 Jacques Frechet.
924
Mark Dickinson315a20a2009-01-04 21:34:18 +0000925- Restore Python 2.3 compatibility for decimal.py.
926
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000927- Issue #3638: Remove functions from _tkinter module level that depend on
928 TkappObject to work with multiple threads.
929
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000930- Issue #4718: Adapt the wsgiref package so that it actually works with
931 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000932 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
933
Raymond Hettinger771ed762009-01-03 19:20:32 +0000934- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
935 to the decimal module.
936
Georg Brandl3a9b0622009-01-03 22:07:57 +0000937- Fractions.from_float() no longer loses precision for integers too big to
938 cast as floats.
939
Mark Dickinsonf9236412009-01-02 23:23:21 +0000940- Issue #4812: add missing underscore prefix to some internal-use-only
941 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
942
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000943- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
Georg Brandl3a9b0622009-01-03 22:07:57 +0000944 did unnecessary work in the common case where no key function was specified.
945
Georg Brandlb1441c72009-01-03 22:33:39 +0000946- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
947 the function is not a generator.
948
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000949- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
950 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000951
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000952- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000953 function. Original patch by Thomas Heller.
954
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000955- Issue #3767: Convert Tk object to string in tkColorChooser.
956
Martin v. Löwise354d782008-12-29 16:03:04 +0000957- Issue #3248: Allow placing ScrolledText in a PanedWindow.
958
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000959- Issue #4444: Allow assertRaises() to be used as a context handler, so that
960 the code under test can be written inline if more practical.
961
Georg Brandldb7b6b92009-01-01 15:53:14 +0000962- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
963 works as expected in the interactive environment.
964
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000965- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
966 Gabriel Genellina.
967
Antoine Pitrou180a3362008-12-14 16:36:46 +0000968- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
969 boundary.
970
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000971- Issue #4223: inspect.getsource() will now correctly display source code
972 for packages loaded via zipimport (or any other conformant PEP 302
973 loader). Original patch by Alexander Belopolsky.
974
975- Issue #4201: pdb can now access and display source code loaded via
976 zipimport (or any other conformant PEP 302 loader). Original patch by
977 Alexander Belopolsky.
978
979- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
980 302 conformant loader) will now work correctly in most cases (they
981 are still subject to the constraints that exist for all code running
982 from inside a module loaded via a PEP 302 loader and attempting to
983 perform IO operations based on __file__). Original patch by
984 Alexander Belopolsky.
985
986- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
987 allows backporting to maintenance branches. Original patch by
988 Alexander Belopolsky.
989
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000990- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
991 a non-ASCII letter.
992
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000993- Issue #4616: TarFile.utime(): Restore directory times on Windows.
994
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000995- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
996 codec cannot be found. This is for compatibility with the builtin behavior.
997
Facundo Batista708d5812008-12-11 04:20:07 +0000998- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
999 give correct results in the case where one argument is a quiet NaN
1000 and the other is a finite number that requires rounding.
1001
Skip Montanaroc1ce2862008-12-06 17:25:02 +00001002- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
1003 libs.
1004
Georg Brandlf9734072008-12-07 15:30:06 +00001005- Added the subprocess.check_call_output() convenience function to get output
1006 from a subprocess on success or raise an exception on error.
1007
1008- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1009 support unusual filenames (such as those containing semi-colons) in
1010 Content-Disposition headers.
1011
1012- Issue #4384: Added logging integration with warnings module using
1013 captureWarnings(). This change includes a NullHandler which does nothing;
1014 it will be of use to library developers who want to avoid the "No handlers
1015 could be found for logger XXX" message which can appear if the library user
1016 doesn't configure logging.
1017
1018- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
1019 exception.
1020
Georg Brandleee31162008-12-07 15:15:22 +00001021- Issue #4529: fix the parser module's validation of try-except-finally
1022 statements.
1023
1024- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
1025 not a malformed option.
1026
1027- Added the subprocess.check_output() convenience function to get output
1028 from a subprocess on success or raise an exception on error.
1029
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +00001030- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
1031 the corresponding tests now pass.
1032
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +00001033- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
1034 it was calling the wrong open() function.
1035
Fred Drake9a0a65b2008-12-04 19:24:50 +00001036- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
1037 support unusual filenames (such as those containing semi-colons) in
1038 Content-Disposition headers.
1039
Matthias Klose2c7e3ee2009-01-10 17:08:25 +00001040- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
1041 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
1042
Benjamin Peterson5c6d7872009-02-06 02:40:07 +00001043- Issue #5104: The socket module now raises OverflowError when 16-bit port and
1044 protocol numbers are supplied outside the allowed 0-65536 range on bind()
1045 and getservbyport().
1046
Jeroen Ruigrok van der Werven0a866942009-05-08 14:18:00 +00001047- Windows locale mapping updated to Vista.
1048
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001049Tools/Demos
1050-----------
1051
Antoine Pitrou8a681222009-02-07 17:13:31 +00001052- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
1053 and make it 2.6-compatible.
1054
Guilherme Poloa7d27972009-01-28 16:06:51 +00001055- Ttk demos added in Demo/tkinter/ttk/
1056
Antoine Pitrou2a013ea2008-12-27 20:39:28 +00001057- Issue #4677: add two list comprehension tests to pybench.
1058
Georg Brandlb1441c72009-01-03 22:33:39 +00001059
1060Build
1061-----
1062
Martin v. Löwis8482ef92009-05-05 16:14:30 +00001063- Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
1064
Antoine Pitrou8966c992009-05-01 21:18:27 +00001065- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
1066 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
1067
Matthias Klose55708cc2009-04-30 08:06:49 +00001068- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
1069 the order that backends for the dbm extension are checked.
1070
Matthias Klose906785c2009-02-22 23:18:38 +00001071- Link the shared python library with $(MODLIBS).
1072
Martin v. Löwis11f72102009-02-10 13:13:30 +00001073- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
1074
Martin v. Löwisbc186a82009-02-02 15:32:22 +00001075- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
1076
Martin v. Löwise97637d2009-01-11 09:45:11 +00001077- Issue #4895: Use _strdup on Windows CE.
1078
Georg Brandlb1441c72009-01-03 22:33:39 +00001079- Issue #4472: "configure --enable-shared" now works on OSX
1080
1081- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
1082
1083- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
1084
1085- Issue #4289: Remove Cancel button from AdvancedDlg.
1086
1087- Issue #1656675: Register a drop handler for .py* files on Windows.
1088
1089- Issue #4120: Exclude manifest from extension modules in VS2008.
1090
1091- Issue #4091: Install pythonxy.dll in system32 again.
1092
1093- Issue #4018: Disable "for me" installations on Vista.
1094
1095- Issue #3758: Add ``patchcheck`` build target to .PHONY.
1096
1097- Issue #4204: Fixed module build errors on FreeBSD 4.
1098
1099
1100C-API
1101-----
1102
Mark Dickinson21776072009-02-10 16:13:25 +00001103- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
1104 for negative arguments. Previously, it raised TypeError.
1105
Georg Brandlb1441c72009-01-03 22:33:39 +00001106- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
1107
1108- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
1109 the GIL is released, or owned by another thread.
1110
1111- Issue #4122: On Windows, fix a compilation error when using the
1112 Py_UNICODE_ISSPACE macro in an extension module.
1113
1114
Mark Dickinsone675f082008-12-11 21:56:00 +00001115Extension Modules
1116-----------------
1117
Gregory P. Smith365a1862009-02-12 07:35:29 +00001118- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
1119 supporting objects as input no matter how it was compiled (built in
1120 implementations or external openssl library).
1121
Mark Dickinson29500f62009-01-15 15:36:10 +00001122- Issue #4397: Fix occasional test_socket failure on OS X.
1123
Martin v. Löwisa9b54c72009-01-11 09:30:50 +00001124- Issue #4279: Fix build of parsermodule under Cygwin.
1125
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +00001126- Issue #4751: hashlib now releases the GIL when hashing large buffers
1127 (with a hardwired threshold of 2048 bytes), allowing better parallelization
1128 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
1129
Martin v. Löwis5c88d812009-01-02 20:47:48 +00001130- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
1131
Antoine Pitrou31f30b12009-01-02 17:34:35 +00001132- Issue #4738: Each zlib object now has a separate lock, allowing to compress
1133 or decompress several streams at once on multi-CPU systems. Also, the GIL
1134 is now released when computing the CRC of a large buffer. Patch by ebfe.
1135
Georg Brandlb1441c72009-01-03 22:33:39 +00001136- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
1137
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +00001138- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
1139
Mark Dickinsone675f082008-12-11 21:56:00 +00001140- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
1141 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +00001142
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +00001143- Issue #4583: array.array would not always prohibit resizing when a buffer
1144 has been exported, resulting in an interpreter crash when accessing the
1145 buffer.
1146
Martin v. Löwis841edad2008-11-30 10:36:49 +00001147
Jack Diederiche0cbd692009-04-01 04:27:09 +00001148- Issue #5228: Make functools.partial objects can now be pickled.
1149
Guilherme Polo9de29af2009-01-28 20:40:48 +00001150Tests
1151-----
1152
R. David Murraya21e4ca2009-03-31 23:16:50 +00001153- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
Vinay Sajipad5fa2f2009-04-27 13:55:05 +00001154 that should cause a test to be skipped are now done using import_module
R. David Murraya21e4ca2009-03-31 23:16:50 +00001155 from test support, which does the conversion.
1156
Guilherme Polo9de29af2009-01-28 20:40:48 +00001157- Issue #5083: New 'gui' resource for regrtest.
1158
1159
Brett Cannon7317c1e2008-11-25 19:19:17 +00001160Docs
1161----
1162
Georg Brandl52b92cc2008-05-25 09:43:03 +00001163
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001164**(For information about older versions, consult the HISTORY file.)**