1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
|
+++++++++++
Python News
+++++++++++
(editors: check NEWS.help for information about editing NEWS using ReST.)
What's New in Python 3.2 Alpha 1?
=================================
*Release date: XX-XXX-XXX*
Core and Builtins
-----------------
- Issue #6846: Fix bug where bytearray.pop() returns negative integers.
- Issue #6750: A text file opened with io.open() could duplicate its output
when writing from multiple threads at the same time.
- Issue #6707: dir() on an uninitialized module caused a crash.
- Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
- Issue #6573: set.union() stopped processing inputs if an instance of self
occurred in the argument chain.
- Issue #6070: On posix platforms import no longer copies the execute bit
from the .py file to the .pyc file if it is set.
- Issue #1616979: Added the cp720 (Arabic DOS) encoding.
- Issue #6428: Since Python 3.0, the __bool__ method must return a bool
object, and not an int. Fix the corresponding error message, and the
documentation.
- The deprecated PyCObject has been removed.
- Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
This fixes a build failure on HP-UX: int32_t and uint32_t are
defined in inttypes.h instead of stdint.h on that platform.
- Issue #6373: Fixed a SystemError when encoding with the latin-1 codec and
the 'surrogateescape' error handler, a string which contains unpaired
surrogates.
- Issue #4856: Remove checks for win NT.
C-API
-----
- Issue #6151: Made PyDescr_COMMON conform to standard C (like PyObject_HEAD
in PEP 3123). The PyDescr_TYPE and PyDescr_NAME macros should be
should used for accessing the d_type and d_name members of structures
using PyDescr_COMMON.
- Issue #6405: Remove duplicate type declarations in descrobject.h.
- The code flags for old __future__ features are now available again.
- Issue #5954: Add a PyFrame_GetLineNumber() function to replace most uses of
PyCode_Addr2Line().
- Issue #5959: Add a PyCode_NewEmpty() function to create a new empty code
object at a specified file, function, and line number.
- Issue #1419652: Change the first argument to PyImport_AppendInittab() to
``const char *`` as the string is stored beyond the call.
Library
-------
- Issue #6856: Add a filter keyword argument to TarFile.add().
- Issue #6888: pdb's alias command was broken when no arguments were given.
- Issue #6857: Default format() alignment should be '>' for Decimal
instances.
- Issue #6795: int(Decimal('nan')) now raises ValueError instead of
returning NaN or raising InvalidContext. Also, fix infinite recursion
in long(Decimal('nan')).
- Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
with no type specifier.
- Issue #6239: ctypes.c_char_p return value must return bytes.
- Issue #6838: Use a list to accumulate the value instead of
repeatedly concatenating strings in http.client's
HTTPResponse._read_chunked providing a significant speed increase
when downloading large files servend with a Transfer-Encoding of 'chunked'.
- Trying to import a submodule from a module that is not a package, ImportError
should be raised, not AttributeError.
- When the globals past to importlib.__import__() has __package__ set to None,
fall back to computing what __package__ should be instead of giving up.
- Raise a TypeError when the name of a module to be imported for
importlib.__import__ is not a string (was raising an
AttributeError before).
- Allow the fromlist passed into importlib.__import__ to be any iterable.
- Have importlib raise ImportError if None is found in sys.modules.
- Issue #6054: Do not normalize stored pathnames in tarfile.
- Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
payloads are now ordered by integer value rather than lexicographically.
- Issue #1356969: Add missing info methods in tix.HList.
- Issue #1522587: New constants and methods for the tix.Grid widget.
- Issue #1250469: Fix the return value of tix.PanedWindow.panes.
- Issue #1119673: Do not override tkinter.Text methods when creating a
ScrolledText.
- Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
- Issue #1135: Add the XView and YView mix-ins to avoid duplicating
the xview* and yview* methods.
- Issue #6629: Fix a data corruption issue in the new I/O library, which could
occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
"wb+" mode) after having buffered a certain amount of data for reading. This
bug was not present in the pure Python implementation.
- Issue #6622: Fix "local variable 'secret' referenced before
assignment" bug in POP3.apop.
- Issue #2715: Remove remnants of Carbon.File from binhex module.
- Issue #6595: The Decimal constructor now allows arbitrary Unicode
decimal digits in input, as recommended by the standard. Previously
it was restricted to accepting [0-9].
- Issue #6106: telnetlib.Telnet.process_rawq doesn't handle default WILL/WONT
DO/DONT correctly.
- Issue #1424152: Fix for http.client, urllib.request to support SSL while
working through proxy. Original patch by Christopher Li, changes made by
Senthil Kumaran
- Add importlib.abc.ExecutionLoader to represent the PEP 302 protocol for
loaders that allow for modules to be executed. Both importlib.abc.PyLoader
and PyPycLoader inherit from this class and provide implementations in
relation to other methods required by the ABCs.
- importlib.abc.PyLoader did not inherit from importlib.abc.ResourceLoader like
the documentation said it did even though the code in PyLoader relied on the
abstract method required by ResourceLoader.
- Issue #6431: Make Fraction type return NotImplemented when it doesn't
know how to handle a comparison without loss of precision. Also add
correct handling of infinities and nans for comparisons with float.
- Issue #6415: Fixed warnings.warn segfault on bad formatted string.
- Issue #6358: The exit status of a command started with os.popen() was
reported differently than it did with python 2.x.
- Issue #6323: The pdb debugger did not exit when running a script with a
syntax error.
- Issue #3392: The subprocess communicate() method no longer fails in select()
when file descriptors are large; communicate() now uses poll() when possible.
- Issue #6369: Fix an RLE decompression bug in the binhex module.
- Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
- The deprecated function string.maketrans has been removed.
- Issue #4005: Fixed a crash of pydoc when there was a zip file present in
sys.path.
- Issue #6218: io.StringIO and io.BytesIO instances are now picklable.
Extension Modules
-----------------
- Issue #6848: Fix curses module build failure on OS X 10.6.
- Fix a segfault that could be triggered by expat with specially formed input.
- Issue #6561: '\d' in a regex now matches only characters with
Unicode category 'Nd' (Number, Decimal Digit). Previously it also
matched characters with category 'No'.
- Issue #4509: Array objects are no longer modified after an operation
failing due to the resize restriction in-place when the object has exported
buffers.
- Issue #2389: Array objects are now pickled in a portable manner.
Build
-----
- Issue #6802: Fix build issues on MacOSX 10.6
- Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
- Issue 4601: 'make install' did not set the appropriate permissions on
directories.
- Issue 5390: Add uninstall icon independent of whether file
extensions are installed.
Documenation
------------
- Document that importing a module that has None in sys.modules triggers an
ImportError.
- Issue #6556: Fixed the Distutils configuration files location explanation
for Windows.
Tests
-----
- Fixed tests in importlib.test.source.test_abc_loader that were masking
the proper exceptions that should be raised for missing or improper code
object bytecode.
- Removed importlib's custom test discovery code and switched to
unittest.TestLoader.discover().
What's New in Python 3.1?
=========================
*Release date: 27-June-2009*
Core and Builtins
-----------------
- Issue #6334: Fix bug in range length calculation for ranges with
large arguments.
- Issue #6329: Fixed iteration for memoryview objects (it was being blocked
because it wasn't recognized as a sequence).
Library
-------
- Issue #6126: Fixed pdb command-line usage.
- Issue #6314: logging: performs extra checks on the "level" argument.
- Issue #6274: Fixed possible file descriptors leak in subprocess.py
- Accessing io.StringIO.buffer now raises an AttributeError instead of
io.UnsupportedOperation.
- Issue #6271: mmap tried to close invalid file handle (-1) when anonymous.
(On Unix)
- Issue #1202: zipfile module would cause a struct.error when attempting to
store files with a CRC32 > 2**31-1.
Extension Modules
-----------------
- Issue #5590: Remove unused global variable in pyexpat extension.
What's New in Python 3.1 Release Candidate 2?
=============================================
*Release date: 13-June-2009*
Core and Builtins
-----------------
- Fixed SystemError triggered by "range([], 1, -1)".
- Issue #5924: On Windows, a large PYTHONPATH environment variable
(more than 255 characters) would be completely ignored.
- Issue #4547: When debugging a very large function, it was not always
possible to update the lineno attribute of the current frame.
- Issue #5330: C functions called with keyword arguments were not reported by
the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
Library
-------
- Issue #6438: Fixed distutils.cygwinccompiler.get_versions : the regular
expression string pattern was trying to match against a bytes returned by
Popen. Tested under win32 to build the py-postgresql project.
- Issue #6258: Support AMD64 in bdist_msi.
- Issue #6195: fixed doctest to no longer try to read 'source' data from
binary files.
- Issue #5262: Fixed bug in next rollover time computation in
TimedRotatingFileHandler.
- Issue #6217: The C implementation of io.TextIOWrapper didn't include the
errors property. Additionally, the errors and encoding properties of StringIO
are always None now.
- Issue #6137: The pickle module now translates module names when loading
or dumping pickles with a 2.x-compatible protocol, in order to make data
sharing and migration easier. This behaviour can be disabled using the
new `fix_imports` optional argument.
- Removed the ipaddr module.
- Issue #3613: base64.{encode,decode}string are now called
base64.{encode,decode}bytes which reflects what type they accept and return.
The old names are still there as deprecated aliases.
- Issue #5767: Remove sgmlop support from xmlrpc.client.
- Issue #6150: Fix test_unicode on wide-unicode builds.
- Issue #6149: Fix initialization of WeakValueDictionary objects from non-empty
parameters.
Windows
-------
- Issue #6221: Delete test registry key before running the test.
- Issue #6158: Package Sine-1000Hz-300ms.aif in MSI file.
C-API
-----
- Issue #5735: Python compiled with --with-pydebug should throw an
ImportError when trying to import modules compiled without
--with-pydebug, and vice-versa.
Build
-----
- Issue #6154: Make sure the intl library is added to LIBS if needed. Also
added LIBS to OS X framework builds.
- Issue #5809: Specifying both --enable-framework and --enable-shared is
an error. Configure now explicity tells you about this.
What's New in Python 3.1 release candidate 1?
=============================================
*Release date: 2009-05-30*
Core and Builtins
-----------------
- Issue #6097: Escape UTF-8 surrogates resulting from mbstocs conversion
of the command line.
- Issue #6012: Add cleanup support to O& argument parsing.
- Issue #6089: Fixed str.format with certain invalid field specifiers
that would raise SystemError.
- Issue #5982: staticmethod and classmethod now expose the wrapped
function with __func__.
- Added support for multiple context managers in the same with-statement.
Deprecated contextlib.nested() which is no longer needed.
- Issue #5829: complex("1e500") no longer raises OverflowError. This
makes it consistent with float("1e500") and interpretation of real
and imaginary literals.
- Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
- Issue #5994: the marshal module now has docstrings.
- Issue #5981: Fix three minor inf/nan issues in float.fromhex:
(1) inf and nan strings with trailing whitespace were incorrectly
rejected; (2) parsing of strings representing infinities and nans
was locale aware; and (3) the interpretation of fromhex('-nan')
didn't match that of float('-nan').
Library
-------
- Issue #4859: Implement PEP 383 for pwd, spwd, and grp.
- smtplib 'login' and 'cram-md5' login are also fixed (see Issue #5259).
- Issue #6121: pydoc now ignores leading and trailing spaces in the
argument to the 'help' function.
- Issue #6118: urllib.parse.quote_plus ignored the encoding and errors
arguments for strings with a space in them.
- collections.namedtuple() was not working with the following field
names: cls, self, tuple, itemgetter, and property.
- In unittest, using a skipping decorator on a class is now equivalent to
skipping every test on the class. The ClassTestSuite class has been removed.
- Issue #6050: Don't fail extracting a directory from a zipfile if
the directory already exists.
- Issue #1309352: fcntl now converts its third arguments to a C `long` rather
than an int, which makes some operations possible under 64-bit Linux (e.g.
DN_MULTISHOT with F_NOTIFY).
- Issue #5761: Add the name of the underlying file to the repr() of various
IO objects.
- Issue #5259: smtplib plain auth login no longer gives a traceback. Fix
by Musashi Tamura, tests by Marcin Bachry.
- Issue #1983: Fix functions taking or returning a process identifier to use
the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
a process identifier type wider than the standard C integer type.
- Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
Patch by Farhan Ahmad, test by Marcin Bachry.
- Issue #2116: Weak references and weak dictionaries now support copy()ing and
deepcopy()ing.
- Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
- Issue #5918: Fix a crash in the parser module.
- Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
- Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
library. This means, for example, that opening an UTF-16 text file in
append mode doesn't add a BOM at the end of the file if the file isn't
empty.
- Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
corrects a pydoc regression.
- Issue 5955: aifc's close method did not close the file it wrapped,
now it does. This also means getfp method now returns the real fp.
Installation
------------
- Issue #6047: fullinstall has been removed because Python 3's executable will
now be known as python3.
- Lib/smtpd.py is no longer installed as a script.
Extension Modules
-----------------
- Issue #3061: Use wcsftime for time.strftime where available.
- Issue #4873: Fix resource leaks in error cases of pwd and grp.
- Issue #6093: Fix off-by-one error in locale.strxfrm.
- The _functools and _locale modules are now built into the libpython shared
library instead of as extension modules.
Build
-----
- Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
and a python3.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
Clinton Roy.
Tests
-----
- Issue 5442: Tests for importlib were not properly skipping case-sensitivity
tests on darwin even when the OS was installed on a case-sensitive
filesystem. Also fixed tests that should not be run when
sys.dont_write_bytecode is true.
What's New in Python 3.1 beta 1?
================================
*Release date: 2009-05-06*
Core and Builtins
-----------------
- Issue #5914: Add new C API function PyOS_string_to_double, and
deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
- Issue #3382: float.__format__, complex.__format__, and %-formatting
no longer map 'F' to 'f'. Because of issue #5859 (below), this only
affects nan -> NAN and inf -> INF.
- Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
in all operations, including splitdrive, split, etc. splitunc() now issues
a PendingDeprecation warning.
- Issue #5920: For float.__format__, change the behavior with the
empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
to be like 'g' but with at least one decimal point and with a
default precision of 12. Previously, the behavior the same but with
a default precision of 6. This more closely matches str(), and
reduces surprises when adding alignment flags to the empty
presentation type. This also affects the new complex.__format__ in
the same way.
- Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
- Issue #5890: in subclasses of 'property' the __doc__ attribute was
shadowed by classtype's, even if it was None. property now
inserts the __doc__ into the subclass instance __dict__.
- Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
sequences. Patch by Nick Barnes and Victor Stinner.
- Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
received a new method, detach(). detach() disconnects the underlying stream
from the buffer or text IO and returns it.
- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
floats with absolute value over 1e50. Also remove length
restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
12.34 no longer raise an exception.
- Issue #1588: Add complex.__format__. For example,
format(complex(1, 2./3), '.5') now produces a sensible result.
- Issue #5864: Fix empty format code formatting for floats so that it
never gives more than the requested number of significant digits.
- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
- Issue #5835: Deprecate PyOS_ascii_formatd.
- Issue #4971: Fix titlecase for characters that are their own
titlecase, but not their own uppercase.
- Issue #5283: Setting __class__ in __del__ caused a segfault.
- Issue #5816: complex(repr(z)) now recovers z exactly, even when
z involves nans, infs or negative zeros.
- Issue #3166: Make int -> float conversions correctly rounded.
- Issue #1869 (and many duplicates): make round(x, n) correctly
rounded for a float x, by using the decimal <-> binary conversions
from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
consistently agrees with format(x, '.2f').
- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
some builtin types.
- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
- Issue #5515: str.format() type 'n' combined with commas and leading
zeros no longer gives odd results with ints and floats.
- Implement PEP 378, Format Specifier for Thousands Separator, for
floats.
- The str function switches to exponential notation at
1e11, not 1e12. This avoids printing 13 significant digits in
situations where only 12 of them are correct. Example problem
value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
long time.)
- Issue #1580: On most platforms, use a 'short' float repr: for a
finite float x, repr(x) now outputs a string based on the shortest
sequence of decimal digits that rounds to x. Previous behaviour was
to output 17 significant digits and then strip trailing zeros.
Another minor difference is that the new repr switches to
exponential notation at 1e16 instead of the previous 1e17; this
avoids misleading output in some cases.
There's a new sys attribute sys.float_repr_style, which takes
the value 'short' to indicate that we're using short float repr,
and 'legacy' if the short float repr isn't available for one
reason or another.
The float repr change involves incorporating David Gay's 'perfect
rounding' code into the Python core (it's in Python/dtoa.c). As a
secondary consequence, all string-to-float and float-to-string
conversions (including all float formatting operations) will be
correctly rounded on these platforms.
See issue 1580 discussions for details of platforms for which
this change does not apply.
- Issue #5759: float() didn't call __float__ on str subclasses.
- The string.maketrans() function is deprecated; there is a new static method
maketrans() on the bytes and bytearray classes. This removes confusion about
the types string.maketrans() is supposed to work with, and mirrors the
methods available on the str class.
- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
its clarity and its speed.
- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
to avoid compiler warnings.
- Issue #3739: The unicode-internal encoder now reports the number of characters
consumed like any other encoder (instead of the number of bytes).
Installation
------------
- Issue #5756: Install idle and pydoc with a 3 suffix.
Library
-------
- Issue #5311: bdist_msi can now build packages that do not depend on a
specific Python version.
- Issue #5150: IDLE's format menu now has an option to strip trailing
whitespace.
- Issue #5940: distutils.command.build_clib.check_library_list was not doing
the right type checkings anymore.
- Issue #4875: On win32, ctypes.util.find_library does no longer
return directories.
- Issue #5142: Add the ability to skip modules while stepping to pdb.
- Issue #1309567: Fix linecache behavior of stripping subdirectories when
looking for files given by a relative filename.
- Issue #5923: Update the ``turtle`` module to version 1.1, add two new
turtle demos in Demo/turtle.
- Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
extracting a file to the root directory.
- Issue #5913: os.listdir() should fail for empty path on windows.
- Issue #5084: unpickling now interns the attribute names of pickled objects,
saving memory and avoiding growth in size of subsequent pickles. Proposal
and original patch by Jake McGuire.
- The json module now works exclusively with str and not bytes.
- Issue #3959: The ipaddr module has been added to the standard library.
Contributed by Google.
- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
error when a named pipe is encountered, rather than blocking infinitely.
- Issue #5857: tokenize.tokenize() now returns named tuples.
- Issue #4305: ctypes should now build again on mipsel-linux-gnu
- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
string is already in normalized form, by performing a quick check beforehand.
Original patch by Rauli Ruohonen.
- Issue #5853: calling a function of the mimetypes module from several threads
at once could hit the recursion limit if the mimetypes database hadn't been
initialized before.
- Issue #5854: Updated __all__ to include some missing names and remove some
names which should not be exported.
- Issue #3102: All global symbols that the _ctypes extension defines
are now prefixed with 'Py' or '_ctypes'.
- Issue #5041: ctypes does now allow pickling wide character.
- Issue #5812: For the two-argument form of the Fraction constructor,
Fraction(m, n), m and n are permitted to be arbitrary Rational
instances.
- Issue #5812: Fraction('1e6') is valid: more generally, any string
that's valid for float() is now valid for Fraction(), with the
exception of strings representing NaNs and infinities.
- Issue #5734: BufferedRWPair was poorly tested and had several glaring
bugs. Patch by Brian Quinlan.
- Issue #1161031: fix readwrite select flag handling: POLLPRI now
results in a handle_expt_event call, not handle_read_event, and POLLERR
and POLLNVAL now call handle_close, not handle_expt_event. Also,
dispatcher now has an 'ignore_log_types' attribute for suppressing
log messages, which is set to 'warning' by default.
- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
new arguments introduced in 2.5.
- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
makeunicodedata.py and regenerated the Unicode database (This fixes
u'\u1d79'.lower() == '\x00').
Extension Modules
-----------------
- Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
pwd.
- Issue #5463: In struct module, remove deprecated float coercion
for integer type codes: struct.pack('L', 0.3) should now raise
an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
The version number has been bumped to 0.3.
- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
using Berkley-DB.
Tests
-----
- Issue #5354: New test support function import_fresh_module() makes
it easy to import both normal and optimised versions of modules.
test_heapq and test_warnings have been adjusted to use it, tests for
other modules with both C and Python implementations in the stdlib
can be adjusted to use it over time.
- Issue #5837: Certain sequences of calls to set() and unset() for
support.EnvironmentVarGuard objects restored the environment variables
incorrectly on __exit__.
C-API
-----
- Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
What's New in Python 3.1 alpha 2?
=================================
*Release date: 2009-4-4*
Core and Builtins
-----------------
- Implement PEP 378, Format Specifier for Thousands Separator, for
integers.
- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
- Issue #5499: The 'c' code for argument parsing functions now only accepts a
byte, and the 'C' code only accepts a unicode character.
- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
when hitting the recursion limit under certain circumstances.
- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
- Fix a segfault when running test_exceptions with coverage, caused by
insufficient checks in accessors of Exception.__context__.
- Issue #5604: non-ASCII characters in module name passed to
imp.find_module() were converted to UTF-8 while the path is
converted to the default filesystem encoding, causing nonsense.
- Issue #5126: str.isprintable() returned False for space characters.
- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
the end sys.path, for compatibility with the system install of Python.
- Issue #4688: Add a heuristic so that tuples and dicts containing only
untrackable objects are not tracked by the garbage collector. This can
reduce the size of collections and therefore the garbage collection overhead
on long-running programs, depending on their particular use of datatypes.
- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
improve its performance. Long divisions and remainder operations
are now between 50% and 150% faster.
- Issue #4258: Make it possible to use base 2**30 instead of base
2**15 for the internal representation of integers, for performance
reasons. Base 2**30 is enabled by default on 64-bit machines. Add
--enable-big-digits option to configure, which overrides the
default. Add sys.int_info structseq to provide information about
the internal format.
- Issue #4474: PyUnicode_FromWideChar now converts characters outside
the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
and sizeof(Py_UNICODE) == 2.
- Issue #5237: Allow auto-numbered fields in str.format(). For
example: '{} {}'.format(1, 2) == '1 2'.
- Issue #5392: when a very low recursion limit was set, the interpreter would
abort with a fatal error after the recursion limit was hit twice.
- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
short file names.
Library
-------
- Issue #2625: added missing items() call to the for loop in
mailbox.MH.get_message().
- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
error substitutions from non-strict codec error callbacks in
incrementalencoder and StreamWriter.
- Issue #5656: Fix the coverage reporting when running the test suite with
the -T argument.
- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
- Issue #5624: Fix the _winreg module name still used in several modules.
- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
- Issue #5619: Multiprocessing children disobey the debug flag and causes
popups on windows buildbots. Patch applied to work around this issue.
- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
- Issue #5387: Fixed mmap.move crash by integer overflow.
- Issue #5261: Patch multiprocessing's semaphore.c to support context
manager use: "with multiprocessing.Lock()" works now.
- Issue #5236: Change time.strptime() to only take strings. Didn't work with
bytes already but the failure was non-obvious.
- Issue #5177: Multiprocessing's SocketListener class now uses
socket.SO_REUSEADDR on all connections so that the user no longer needs
to wait 120 seconds for the socket to expire.
- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
- Issue #1174606: Calling read() without arguments of an unbounded file
(typically /dev/zero under Unix) could crash the interpreter.
- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
io.BufferedRandom have been deprecated for removal in Python 3.2.
- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
forever on incomplete input. That caused tarfile.open() to hang when used
with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
partial bzip2 compressed data.
- Issue #2110: Add support for thousands separator and 'n' type
specifier to Decimal.__format__
- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
'>' alignment characters.
- The error detection code in FileIO.close() could fail to reflect the `errno`
value, and report it as -1 instead.
- Issue #5016: FileIO.seekable() could return False if the file position
was negative when truncated to a C int. Patch by Victor Stinner.
Extension Modules
-----------------
- Issue #5391: mmap now deals exclusively with bytes.
- Issue #5463: In struct module, remove deprecated overflow wrapping
when packing an integer: struct.pack('=L', -1) now raises
struct.error instead of returning b'\xff\xff\xff\xff'. The
_PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
have been removed from the struct module.
What's New in Python 3.1 alpha 1
================================
*Release date: 2009-03-07*
Core and Builtins
-----------------
- The io module has been reimplemented in C for speed.
- Give dict views an informative __repr__.
- Issue #5247: Improve error message when unknown format codes are
used when using str.format() with str, int, and float arguments.
- Issue #5249: time.strftime returned malformed string when format string
contained non ascii character on windows.
- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
source has already been decoded into str.
- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
rotating the object pointer by 4 bits to the right.
- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
it now forces its argument to double before testing for infinity.
- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
returns a non-number type.
- Issue #5182: Removed memoryview.__str__.
- Issue #1717: Removed builtin cmp() function, dropped tp_compare
slot, the C API functions PyObject_Compare and PyUnicode_Compare and
the type definition cmpfunc. The tp_compare slot has been renamed
to tp_reserved, and is reserved for future usage.
- Issue #1242657: the __len__() and __length_hint__() calls in several tools
were suppressing all exceptions. These include list() and bytearray().
- Issue #4707: round(x, n) now returns an integer if x is an integer.
Previously it returned a float.
- Issue #4753: By enabling a configure option named '--with-computed-gotos'
on compilers that support it (notably: gcc, SunPro, icc), the bytecode
evaluation loop is compiled with a new dispatch mechanism which gives
speedups of up to 20%, depending on the system, on various benchmarks.
- Issue #4874: Most builtin decoders now reject unicode input.
- Issue #4842: Don't allow trailing 'L' when constructing an integer
from a string.
- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
- Issue #4838: When a module is deallocated, free the memory backing the
optional module state data.
- Issue #4910: Rename nb_long slot to nb_reserved, and change its
type to (void *).
- Issue #4935: The overflow checking code in the expandtabs() method common
to str, bytes and bytearray could be optimized away by the compiler, letting
the interpreter segfault instead of raising an error.
- Issue #3720: Fix a crash when an iterator modifies its class and removes its
__next__ method.
- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
function no longer attempt to call the __long__ slot to convert an object
to an integer. Only the __int__ and __trunc__ slots are examined.
- Issue #4893: Use NT threading on CE.
- Issue #4915: Port sysmodule to Windows CE.
- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
common cases are optimized thanks to a dedicated fast path and a moderate
amount of loop unrolling.
- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
collecting the oldest generation) so that allocating lots of objects without
destroying them does not show quadratic performance. Based on a proposal by
Martin von Löwis at
http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
- Issue #4604: Some objects of the I/O library could still be used after
having been closed (for instance, a read() call could return some
previously buffered data). Patch by Dmitry Vasiliev.
- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
flag to work properly. Furthermore, when specifying -u, the text stdout
and stderr streams have line-by-line buffering enabled (the default being
to buffer arbitrary chunks of data).
- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
instead of ints (reducing its size from 4 to 8 times thereby reducing
Python's overall memory).
- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
an existing .py counterpart, override the co_filename attributes of all
code objects if the original filename is obsolete (which can happen if the
file has been renamed, moved, or if it is accessed through different paths).
Patch by Ziga Seilnacht and Jean-Paul Calderone.
- Issue #4580: Fix slicing of memoryviews when the item size is greater than
one byte. Also fixes the meaning of len() so that it returns the number of
items, rather than the size in bytes.
- Issue #4075: Use OutputDebugStringW in Py_FatalError.
- Issue #4747: When the terminal does not use utf-8, executing a script with
non-ascii characters in its name could fail with a "SyntaxError: None" error.
- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
file with `bytes' filename on Windows.
- Issue #3680: Reference cycles created through a dict, set or deque iterator
did not get collected.
- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
where the tp_hash and tp_dict slots are both NULL.
- Issue #4759: None is now allowed as the first argument of
bytearray.translate(). It was always allowed for bytes.translate().
- Added test case to ensure attempts to read from a file opened for writing
fail.
- Issue #3106: Speedup some comparisons (str/str and int/int).
- Issue #2183: Simplify and optimize bytecode for list, dict and set
comprehensions. Original patch for list comprehensions by Neal Norwitz.
- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
print elapsed times, not only when some objects are uncollectable /
unreachable. Original patch by Neil Schemenauer.
- Issue #3439: Add a bit_length method to int.
- Issue #2173: When getting device encoding, check that return value of
nl_langinfo is not the empty string. This was causing silent build
failures on OS X.
- Issue #4597: Fixed several opcodes that weren't always propagating
exceptions.
- Issue #4589: Fixed exception handling when the __exit__ function of a
context manager returns a value that cannot be converted to a bool.
- Issue #4445: Replace "sizeof(PyBytesObject)" with
"offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
bytes instances. On a typical machine this saves 3 bytes of memory
(on average) per allocation of a bytes instance.
- Issue #4533: File read operation was dreadfully slow due to a slowly
growing read buffer. Fixed by using the same growth rate algorithm as
Python 2.x.
- Issue #4509: Various issues surrounding resize of bytearray objects to
which there are buffer exports (e.g. memoryview instances).
- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
method on file objects with closefd=False. The file descriptor is still
kept open but the file object behaves like a closed file. The ``FileIO``
object also got a new readonly attribute ``closefd``.
- Issue #4569: Interpreter crash when mutating a memoryview with an item size
larger than 1.
- Issue #4748: Lambda generators no longer return a value.
- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
- Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
PyUnicode_DecodeUTF8() once, remember the result and output it in a second
step. This avoids problems with counting UTF-8 bytes that ignores the effect
of using the replace error handler in PyUnicode_DecodeUTF8().
Library
-------
- Issue #6163: Fixed HP-UX runtime library dir options in
distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and
Michael Haubenwallner.
- Issue #6693: New functions in site.py to get user/global site packages paths.
- Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
opening an empty or very small file.
- Issue #6545: Removed assert statements in distutils.Extension, so the
behavior is similar when used with -O.
- unittest has been split up into a package. All old names should still work.
- Issue #6466: now distutils.cygwinccompiler and distutils.emxccompiler
uses the same refactored function to get gcc/ld/dllwrap versions numbers.
It's `distutils.util.get_compiler_versions`. Added deprecation warnings
for the obsolete get_versions() functions.
- Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
- Issue #6314: logging: Extra checks on the "level" argument in more places.
- Issue #2622: Fixed an ImportError when importing email.messsage from a
standalone application built with py2exe or py2app.
- Issue #6455: Fixed test_build_ext under win32.
- Issue #6377: Enabled the compiler option, and deprecate its usage as an
attribute.
- Issue #6413: Fixed the log level in distutils.dist for announce.
- Issue #6403: Fixed package path usage in build_ext.
- Issues #5155, 5313, 5331: multiprocessing.Process._bootstrap was
unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
descriptor errors
- Issue #6365: Distutils build_ext inplace mode was copying the compiled
extension in a subdirectory if the extension name had dots.
- Issue #6164: Added an AIX specific linker argument in Distutils
unixcompiler. Original patch by Sridhar Ratnakumar.
- Issue #6286: Now Distutils upload command is based on urllib2 instead of
httplib, allowing the usage of http_proxy.
- Issue #6287: Added the license field in Distutils documentation.
- Issue #6263: Fixed syntax error in distutils.cygwincompiler.
- Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
in Makefiles. This prevents compile errors when using syntax like:
`LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
- Issue #6131: test_modulefinder leaked when run after test_distutils.
Patch by Hirokazu Yamamoto.
- Issue #6048: Now Distutils uses the tarfile module in archive_util.
- Issue #6062: In distutils, fixed the package option of build_ext. Feedback
and tests on pywin32 by Tim Golden.
- Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
- Issue #6046: Fixed the library extension when distutils build_ext is used
inplace. Initial patch by Roumen Petrov.
- Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
subcommand.
- Issue #6022: a test file was created in the current working directory by
test_get_outputs in Distutils.
- Issue #5977: distutils build_ext.get_outputs was not taking into account the
inplace option. Initial patch by kxroberto.
- Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
for old-style extensions.
- Issue #5976: Fixed Distutils test_check_environ.
- Issue #5941: Distutils build_clib command was not working anymore because
of an incomplete costumization of the archiver command. Added ARFLAGS in the
Makefile besides AR and make Distutils use it. Original patch by David
Cournapeau.
- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
anymore.
- Issue #5810: Fixed Distutils test_build_scripts so it uses
sysconfig.get_config_vars.
- Issue #4951: Fixed failure in test_httpservers.
- Issue #5795: Fixed test_distutils failure on Debian ppc.
- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
a value in SafeConfigParser.
- Issue #5732: added a new command in Distutils: check.
- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
platforms. Initial patch by Paul Moore.
- Issue #5095: Added bdist_msi to the list of bdist supported formats.
Initial fix by Steven Bethard.
- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
Initial fix by Wayne Davison.
- Issue #5694: removed spurious test output in Distutils (test_clean).
- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
- Issue #1665206 (partially): Move imports in cgitb to the top of the module
instead of performing them in functions. Helps prevent import deadlocking in
threads.
- Issue #2522: locale.format now checks its first argument to ensure it has
been passed only one pattern, avoiding mysterious errors where it appeared
that it was failing to do localization.
- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
Brandl.
- Issue #1222: locale.format() bug when the thousands separator is a space
character.
- Issue #5472: Fixed distutils.test_util tear down. Original patch by
Tim Golden.
- collections.deque() objects now have a read-only attribute called maxlen.
- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
it is has been populated and properly configured in order to prevent
window flashing.
- Issue #4792: Prevent a segfault in _tkinter by using the
guaranteed to be safe interp argument given to the PythonCmd in place of
the Tcl interpreter taken from a PythonCmd_ClientData.
- Issue #5193: Guarantee that tkinter.Text.search returns a string.
- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
Original patch by Akira Kitada.
- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
- Issue #5385: Fixed mmap crash after resize failure on windows.
- Issue #5179: Fixed subprocess handle leak on failure on windows.
- PEP 372: Added collections.OrderedDict().
- The _asdict() for method for namedtuples now returns an OrderedDict().
- configparser now defaults to using an ordered dictionary.
- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
import guess_extension`` was used.
- Issue #1733986: Fixed mmap crash in accessing elements of second map object
with same tagname but larger size than first map. (Windows)
- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
overrun.
- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
bdist_rpm command.
- Issue #5378: added --quiet option to Distutils bdist_rpm command.
- Issue #5052: make Distutils compatible with 2.3 again.
- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
in Distutils tests.
- Issue #5287: Add exception handling around findCaller() call to help out
IronPython.
- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
The file was resized to wrong size.
- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
- Issue #2279: distutils.sdist.add_defaults now add files
from the package_data and the data_files metadata.
- Issue #5257: refactored all tests in distutils, so they use
support.TempdirManager, to avoid writing in the tests directory.
- Issue #4524: distutils build_script command failed with --with-suffix=3.
Initial patch by Amaury Forgeot d'Arc.
- Issue #2461: added tests for distutils.util
- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
which inherited from numbers.py which did not have __slots__ defined. The
numbers hierarchy now has its own __slots__ declarations.
- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
encoding.
- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
under NT and OS2. Patch by Philip Jenvey.
- Issue #5128: Make compileall properly inspect bytecode to determine if needs
to be recreated. This avoids a timing hole thanks to the old reliance on the
ctime of the files involved.
- Issue #5122: Synchronize tk load failure check to prevent a potential
deadlock.
- Issue #1818: collections.namedtuple() now supports a keyword argument
'rename' which lets invalid fieldnames be automatically converted to
positional names in the form, _1, _2, ...
- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
public documented method ``ZipImporter.get_filename()``.
- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
the execution of packages by looking for and executing a ``__main__``
submodule when a package name is supplied. Initial patch by Andi
Vajda.
- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
Tkapp_Call when calling from a thread different than the one that created
the Tcl interpreter. Patch by Robert Hancock.
- Issue #4285: Change sys.version_info to be a named tuple. Patch by
Ross Light.
- Issue #1520877: Now distutils.sysconfig reads $AR from the
environment/Makefile. Patch by Douglas Greiman.
- Issue #1276768: The verbose option was not used in the code of
distutils.file_util and distutils.dir_util.
- Issue #5132: Fixed trouble building extensions under Solaris with
--enabled-shared activated. Initial patch by Dave Peterson.
- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
- The shelve module now defaults to pickle protocol 3.
- Fix a bug in the trace module where a bytes object from co_lnotab had its
items being passed through ord().
- Issue #2047: shutil.move() could believe that its destination path was
inside its source path if it began with the same letters (e.g. "src" vs.
"src.new").
- Added the ttk module. See issue #2983: Ttk support for Tkinter.
- Removed isSequenceType(), isMappingType, and isNumberType() from the
operator module; use the abstract base classes instead. Also removed
the repeat() function; use mul() instead.
- Issue #5021: doctest.testfile() did not create __name__ and
collections.namedtuple() relied on __name__ being defined.
- Backport importlib from Python 3.1. Only the import_module() function has
been backported to help facilitate transitions from 2.7 to 3.1.
- Issue #1885: distutils. When running sdist with --formats=tar,gztar
the tar file was overriden by the gztar one.
- Issue #4863: distutils.mwerkscompiler has been removed.
- Added a new itertools functions: combinations_with_replacement()
and compress().
- Issue #5032: added a step argument to itertools.count() and
allowed non-integer arguments.
- Fix and properly document the multiprocessing module's logging
support, expose the internal levels and provide proper usage
examples.
- Issue #1672332: fix unpickling of subnormal floats, which was
producing a ValueError on some platforms.
- Issue #3881: Help Tcl to load even when started through the
unreadable local symlink to "Program Files" on Vista.
- Issue #4710: Extract directories properly in the zipfile module;
allow adding directories to a zipfile.
- Issue #3807: _multiprocessing build fails when configure is passed
--without-threads argument. When this occurs, _multiprocessing will
be disabled, and not compiled.
- Issue #5008: When a file is opened in append mode with the new IO library,
do an explicit seek to the end of file (so that e.g. tell() returns the
file size rather than 0). This is consistent with the behaviour of the
traditional 2.x file object.
- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
parameter was set.
- Issue #4842: Always append a trailing 'L' when pickling longs using
pickle protocol 0. When reading, the 'L' is optional.
- Add the importlib package.
- Issue #4301: Patch the logging module to add processName support, remove
_check_logger_class from multiprocessing.
- Issue #3325: Remove python2.x try: except: imports for old cPickle from
multiprocessing.
- Issue #4959: inspect.formatargspec now works for keyword only arguments
without defaults.
- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
for *nix machines for negative handles and large int handles. Without this check
it is possible to segfault the interpreter.
- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
in sharedctypes.py.
- Issue #1225107: inspect.isclass() returned True for instances with a custom
__getattr__.
- Issue #3826 and #4791: The socket module now closes the underlying socket
appropriately when it is being used via socket.makefile() objects
rather than delaying the close by waiting for garbage collection to do it.
- Issue #1696199: Add collections.Counter() for rapid and convenient
counting.
- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
- Issue #4867: Fixed a crash in ctypes when passing a string to a
function without defining argtypes.
- Issue #4272: Add an optional argument to the GzipFile constructor to override
the timestamp in the gzip stream. The default value remains the current time.
The information can be used by e.g. gunzip when decompressing. Patch by
Jacques Frechet.
- Restore Python 2.3 compatibility for decimal.py.
- Issue #3638: Remove functions from _tkinter module level that depend on
TkappObject to work with multiple threads.
- Issue #4718: Adapt the wsgiref package so that it actually works with
Python 3.x, in accordance with the `official amendments of the spec
<http://www.wsgi.org/wsgi/Amendments_1.0>`_.
- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
to the decimal module.
- Fractions.from_float() no longer loses precision for integers too big to
cast as floats.
- Issue #4812: add missing underscore prefix to some internal-use-only
constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
did unnecessary work in the common case where no key function was specified.
- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
the function is not a generator.
- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
- Issue #4646: distutils was choking on empty options arg in the setup
function. Original patch by Thomas Heller.
- Issue #3767: Convert Tk object to string in tkColorChooser.
- Issue #3248: Allow placing ScrolledText in a PanedWindow.
- Issue #4444: Allow assertRaises() to be used as a context handler, so that
the code under test can be written inline if more practical.
- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
works as expected in the interactive environment.
- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
Gabriel Genellina.
- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
boundary.
- Issue #4223: inspect.getsource() will now correctly display source code
for packages loaded via zipimport (or any other conformant PEP 302
loader). Original patch by Alexander Belopolsky.
- Issue #4201: pdb can now access and display source code loaded via
zipimport (or any other conformant PEP 302 loader). Original patch by
Alexander Belopolsky.
- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
302 conformant loader) will now work correctly in most cases (they
are still subject to the constraints that exist for all code running
from inside a module loaded via a PEP 302 loader and attempting to
perform IO operations based on __file__). Original patch by
Alexander Belopolsky.
- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
allows backporting to maintenance branches. Original patch by
Alexander Belopolsky.
- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
a non-ASCII letter.
- Issue #4616: TarFile.utime(): Restore directory times on Windows.
- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
codec cannot be found. This is for compatibility with the builtin behavior.
- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
give correct results in the case where one argument is a quiet NaN
and the other is a finite number that requires rounding.
- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
libs.
- Added the subprocess.check_call_output() convenience function to get output
from a subprocess on success or raise an exception on error.
- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
support unusual filenames (such as those containing semi-colons) in
Content-Disposition headers.
- Issue #4384: Added logging integration with warnings module using
captureWarnings(). This change includes a NullHandler which does nothing;
it will be of use to library developers who want to avoid the "No handlers
could be found for logger XXX" message which can appear if the library user
doesn't configure logging.
- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
exception.
- Issue #4529: fix the parser module's validation of try-except-finally
statements.
- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
not a malformed option.
- Added the subprocess.check_output() convenience function to get output
from a subprocess on success or raise an exception on error.
- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
the corresponding tests now pass.
- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
it was calling the wrong open() function.
- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
support unusual filenames (such as those containing semi-colons) in
Content-Disposition headers.
- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
- Issue #5104: The socket module now raises OverflowError when 16-bit port and
protocol numbers are supplied outside the allowed 0-65536 range on bind()
and getservbyport().
- Windows locale mapping updated to Vista.
Tools/Demos
-----------
- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
and make it 2.6-compatible.
- Ttk demos added in Demo/tkinter/ttk/
- Issue #4677: add two list comprehension tests to pybench.
Build
-----
- Issue #6094: Build correctly with Subversion 1.7.
- Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
linker, rather than always exit successfully. Patch by Floris Bruynooghe.
- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
the order that backends for the dbm extension are checked.
- Link the shared python library with $(MODLIBS).
- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
- Issue #4895: Use _strdup on Windows CE.
- Issue #4472: "configure --enable-shared" now works on OSX
- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
- Issue #4289: Remove Cancel button from AdvancedDlg.
- Issue #1656675: Register a drop handler for .py* files on Windows.
- Issue #4120: Exclude manifest from extension modules in VS2008.
- Issue #4091: Install pythonxy.dll in system32 again.
- Issue #4018: Disable "for me" installations on Vista.
- Issue #3758: Add ``patchcheck`` build target to .PHONY.
- Issue #4204: Fixed module build errors on FreeBSD 4.
C-API
-----
- Issue #6624: yArg_ParseTuple with "s" format when parsing argument with
NUL: Bogus TypeError detail string.
- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
for negative arguments. Previously, it raised TypeError.
- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
the GIL is released, or owned by another thread.
- Issue #4122: On Windows, fix a compilation error when using the
Py_UNICODE_ISSPACE macro in an extension module.
Extension Modules
-----------------
- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
supporting objects as input no matter how it was compiled (built in
implementations or external openssl library).
- Issue #4397: Fix occasional test_socket failure on OS X.
- Issue #4279: Fix build of parsermodule under Cygwin.
- Issue #4751: hashlib now releases the GIL when hashing large buffers
(with a hardwired threshold of 2048 bytes), allowing better parallelization
on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
- Issue #4738: Each zlib object now has a separate lock, allowing to compress
or decompress several streams at once on multi-CPU systems. Also, the GIL
is now released when computing the CRC of a large buffer. Patch by ebfe.
- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
OpenBSD.
- Issue #4583: array.array would not always prohibit resizing when a buffer
has been exported, resulting in an interpreter crash when accessing the
buffer.
- Issue #5228: Make functools.partial objects can now be pickled.
Tests
-----
- Issue #6152: New option '-j'/'--multiprocess' for regrtest allows running
regression tests in parallel, shortening the total runtime.
- Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
Lib/tkinter/test/test_tkinter/test_loadtk. With this, these tests demonstrate
the same behaviour as test_ttkguionly (and now also test_tk) which is to
skip the tests if DISPLAY is defined but can't be used.
- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
that should cause a test to be skipped are now done using import_module
from test support, which does the conversion.
- Issue #5083: New 'gui' resource for regrtest.
Docs
----
**(For information about older versions, consult the HISTORY file.)**
|