blob: 26cc2dba020070bfcd4b234ee797cde340f8cb37 [file] [log] [blame]
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001+++++++++++
2Python News
3+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Christian Heimesbc873412007-12-08 22:11:32 +00007What's New in Python 3.0a3?
8===========================
9
Georg Brandl52d168a2008-01-07 18:10:24 +000010*Release date: XX-XXX-2008*
Christian Heimesbc873412007-12-08 22:11:32 +000011
12Core and Builtins
13-----------------
14
Christian Heimesa156e092008-02-16 07:38:31 +000015- Issue #2115: Important speedup in setting __slot__ attributes. Also
16 prevent a possible crash: an Abstract Base Class would try to access a slot
17 on a registered virtual subclass.
18
19- Fixed repr() and str() of complex numbers with infinity or nan as real or
20 imaginary part.
21
22- Clear all free list during a gc.collect() of the highest generation in order
23 to allow pymalloc to free more arenas. Python may give back memory to the
24 OS earlier.
25
26- Issue #2045: Fix an infinite recursion triggered when printing a subclass of
27 collections.defaultdict, if its default_factory is set to a bound method.
28
29- Fixed a minor memory leak in dictobject.c. The content of the free
30 list was not freed on interpreter shutdown.
31
32- Limit free list of method and builtin function objects to 256 entries
33 each.
34
35- Patch #1953: Added ``sys._compact_freelists()`` and the C API functions
36 ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
37 to compact the internal free lists of pre-allocted ints and floats.
38
39- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
40 Python expected the return type int but the fork familie returns pi_t.
41
42- Issue #1678380: Fix a bug that identifies 0j and -0j when they appear
43 in the same code unit.
44
Raymond Hettinger65baa342008-02-07 00:41:02 +000045- Issue #2025 : Add tuple.count() and tuple.index() methods to comply with
46 the collections.Sequence API.
47
Christian Heimesdfc12ed2008-01-31 15:16:38 +000048- Fixed multiple reinitialization of the Python interpreter. The small int
49 list in longobject.c has caused a seg fault during the third finalization.
50
Christian Heimesc04dac02008-01-30 11:27:57 +000051- Issue #1973: bytes.fromhex('') raises SystemError
52
Raymond Hettinger70b64fc2008-01-30 20:15:17 +000053- Issue #1771: remove cmp parameter from sorted() and list.sort()
54
Christian Heimes7b876152008-01-30 09:51:48 +000055- Issue #1969: split and rsplit in bytearray are inconsistent
56
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +000057- map() and itertools.imap() no longer accept None for the first argument.
58 Use zip() instead.
59
Facundo Batista2336bdd2008-01-19 19:12:01 +000060- Issue #1769: Now int("- 1") is not allowed any more.
61
Christian Heimes386cd1e2008-01-15 02:01:20 +000062- Object/longobject.c: long(float('nan')) raises an OverflowError instead
63 of returning 0.
64
Christian Heimes3b06e532008-01-07 20:12:44 +000065- Issue #1762972: __file__ points to the source file instead of the pyc/pyo
66 file if the py file exists.
67
Guido van Rossumab078dd2008-01-06 00:09:11 +000068- Issue #1393: object_richcompare() returns NotImplemented instead of
69 False if the objects aren't equal, to give the other side a chance.
70
Guido van Rossume239b002008-01-06 00:44:20 +000071- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +000072
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +000073- Improve some exception messages when Windows fails to load an extension
74 module. Now we get for example '%1 is not a valid Win32 application' instead
75 of 'error code 193'. Also use Unicode strings to deal with non-English
76 locales.
77
Christian Heimesa3534a62007-12-11 19:56:40 +000078- Issue #1587: Added instancemethod wrapper for PyCFunctions. The Python C API
79 has gained a new type *PyInstanceMethod_Type* and the functions
80 *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)* and
81 *PyInstanceMethod_Function(im)*.
82
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +000083- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed from the
84 gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE are now enough to
85 print the corresponding list of objects considered by the garbage collector.
86
Guido van Rossume239b002008-01-06 00:44:20 +000087- Issue #1573: Improper use of the keyword-only syntax makes the parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +000088
Christian Heimes0ded5b52007-12-10 15:50:56 +000089- Issue #1564: The set implementation should special-case PyUnicode instead
Guido van Rossume239b002008-01-06 00:44:20 +000090 of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +000091
Christian Heimes7131fd92008-02-19 14:21:46 +000092- Issue #1402: Fix a crash on exit, when another thread is still running, and
93 if the deallocation of its frames somehow calls the PyGILState_Ensure() /
94 PyGILState_Release() functions.
95
96- Expose the Py_Py3kWarningFlag as sys.py3kwarning.
97
98- Issue #1445: Fix a SystemError when accessing the ``cell_contents``
99 attribute of an empty cell object.
100
101- Issue #1460: The utf-7 incremental decoder did not accept truncated input.
102 It now correctly saves its state between chunks of data.
103
104- Patch #1739468: Directories and zipfiles containing a __main__.py file can
105 now be directly executed by passing their name to the interpreter. The
106 directory/zipfile is automatically inserted as the first entry in sys.path.
107
108- Issue #1265: Fix a problem with sys.settrace, if the tracing function uses a
109 generator expression when at the same time the executed code is closing a
110 paused generator.
111
112- sets and frozensets now have an isdisjoint() method.
113
114- optimize the performance of builtin.sum().
115
116- Fix warnings found by the new version of the Coverity checker.
117
118- The enumerate() builtin function is no longer bounded to sequences smaller
119 than LONG_MAX. Formerly, it raised an OverflowError. Now, automatically
120 shifts from ints to longs.
121
122- Issue #1686386: Tuple's tp_repr did not take into account the possibility of
123 having a self-referential tuple, which is possible from C code. Nor did
124 object's tp_str consider that a type's tp_str could do something that could
125 lead to an inifinite recursion. Py_ReprEnter() and Py_EnterRecursiveCall(),
126 respectively, fixed the issues.
127
128- Issue #1164: It was possible to trigger deadlock when using the 'print'
129 statement to write to a file since the GIL was not released as needed. Now
130 PyObject_Print() does the right thing along with various tp_print
131 implementations of the built-in types and those in the collections module.
132
133- Issue #1147: Exceptions were directly allowing string exceptions in their
134 throw() method even though string exceptions no longer allowed.
135
136- Issue #1096: Prevent a segfault from getting the repr of a very deeply nested
137 list by using the recursion counter.
138
139- Issue #1202533: Fix infinite recursion calls triggered by calls to
140 PyObject_Call() never calling back out to Python code to trigger recursion
141 depth updates/checks. Required the creation of a static RuntimeError
142 instance in case normalizing an exception put the recursion check value past
143 its limit. Fixes crashers infinite_rec_(1|2|4|5).py.
144
Guido van Rossumea6775b2008-02-21 20:16:31 +0000145- Patch #1031213: Decode source line in SyntaxErrors back to its
146 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000147
148- Patch #1673759: add a missing overflow check when formatting floats
149 with %G.
150
151- Prevent expandtabs() on string and unicode objects from causing a segfault
152 when a large width is passed on 32-bit platforms.
153
154- Bug #1733488: Fix compilation of bufferobject.c on AIX.
155
156- Bug #1722485: remove docstrings again when running with -OO.
157
158- Add new attribute names for function objects. All the func_* become
159 __*__ attributes. (Some already existed, e.g., __doc__ and __name__.)
160
161- Add -3 option to the interpreter to warn about features that are
162 deprecated and will be changed/removed in Python 3.0.
163
164- Patch #1686487: you can now pass any mapping after '**' in function
165 calls.
166
167- except clauses may now be spelled either "except E, target:" or
168 "except E as target:". This is to provide forwards compatibility with
169 Python 3.0.
170
171- Deprecate BaseException.message as per PEP 352.
172
173- Bug #1303614: don't expose object's __dict__ when the dict is
174 inherited from a builtin base.
175
176- When __slots__ are set to a unicode string, make it work the same as
177 setting a plain string, ie don't expand to single letter identifiers.
178
179- Request #1191699: Slices can now be pickled.
180
181- Request #1193128: str.translate() now allows a None argument for
182 translations that only remove characters without re-mapping the
183 remaining characters.
184
185- Patch #1682205: a TypeError while unpacking an iterable is no longer
186 masked by a generic one with the message "unpack non-sequence".
187
188- Remove unused file Python/fmod.c.
189
190- Bug #1683368: The object.__init__() and object.__new__() methods are
191 now stricter in rejecting excess arguments. The only time when
192 either allows excess arguments is when it is not overridden and the
193 other one is. For backwards compatibility, when both are
194 overridden, it is a deprecation warning (for now; maybe a Py3k
195 warning later). Also, type.__init__() insists on the same signature
196 as supported by type.__new__().
197
198- Patch #1675423: PyComplex_AsCComplex() now tries to convert an object
199 to complex using its __complex__() method before falling back to the
200 __float__() method. Therefore, the functions in the cmath module now
201 can operate on objects that define a __complex__() method.
202
203- Patch #1623563: allow __class__ assignment for classes with __slots__.
204 The old and the new class are still required to have the same slot names.
205
206- Patch #1642547: Fix an error/crash when encountering syntax errors in
207 complex if statements.
208
209- Patch #1462488: Python no longer segfaults when ``object.__reduce_ex__()``
210 is called with an object that is faking its type.
211
212- Patch #1680015: Don't modify __slots__ tuple if it contains an unicode
213 name.
214
215- Patch #1444529: the builtin compile() now accepts keyword arguments.
216
217- Bug #1678647: write a newline after printing an exception in any
218 case, even when converting the value to a string failed.
219
220- The dir() function has been extended to call the __dir__() method on
221 its argument, if it exists. If not, it will work like before. This allows
222 customizing the output of dir() in the presence of a __getattr__().
223
224- Patch #922167: Python no longer segfaults when faced with infinitely
225 self-recursive reload() calls (as reported by bug #742342).
226
227- Patch #1675981: remove unreachable code from ``type.__new__()`` method.
228
229- Patch #1491866: change the complex() constructor to allow parthensized
230 forms. This means complex(repr(x)) now works instead of raising a
231 ValueError.
232
233- Patch #703779: unset __file__ in __main__ after running a file. This
234 makes the filenames the warning module prints much more sensible when
235 a PYTHONSTARTUP file is used.
236
237- Variant of patch #697613: don't exit the interpreter on a SystemExit
238 exception if the -i command line option or PYTHONINSPECT environment
239 variable is given, but break into the interactive interpreter just like
240 on other exceptions or normal program exit.
241
242- Patch #1638879: don't accept strings with embedded NUL bytes in long().
243
244- Bug #1674503: close the file opened by execfile() in an error condition.
245
246- Patch #1674228: when assigning a slice (old-style), check for the
247 sq_ass_slice instead of the sq_slice slot.
248
249- When printing an unraisable error, don't print exceptions. before the name.
250 This duplicates the behavior whening normally printing exceptions.
251
252- Bug #1653736: Properly discard third argument to slot_nb_inplace_power.
253
254- PEP 352: Raising a string exception now triggers a TypeError. Attempting to
255 catch a string exception raises DeprecationWarning.
256
257- Bug #1377858: Fix the segfaulting of the interpreter when an object created
258 a weakref on itself during a __del__ call for new-style classes (classic
259 classes still have the bug).
260
261- Bug #1579370: Make PyTraceBack_Here use the current thread, not the
262 frame's thread state.
263
264- patch #1630975: Fix crash when replacing sys.stdout in sitecustomize.py
265
266- Prevent seg fault on shutdown which could occur if an object
267 raised a warning.
268
269- Bug #1566280: Explicitly invoke threading._shutdown from Py_Main,
270 to avoid relying on atexit.
271
272- Bug #1590891: random.randrange don't return correct value for big number
273
274- Patch #1586791: Better exception messages for some operations on strings,
275 tuples and lists.
276
277- Bug #1067760: Deprecate passing floats to file.seek.
278
279- Bug #1591996: Correctly forward exception in instance_contains().
280
281- Bug #1588287: fix invalid assertion for `1,2` in debug builds.
282
283- Bug #1576657: when setting a KeyError for a tuple key, make sure that
284 the tuple isn't used as the "exception arguments tuple".
285
286- Bug #1565514, SystemError not raised on too many nested blocks.
287
288- Bug #1576174: WindowsError now displays the windows error code
289 again, no longer the posix error code.
290
291- Patch #1549049: Support long values in structmember, issue warnings
292 if the assigned value for structmember fields gets truncated.
293
294- Update the peephole optimizer to remove more dead code (jumps after returns)
295 and inline unconditional jumps to returns.
296
297- Bug #1545497: when given an explicit base, int() did ignore NULs
298 embedded in the string to convert.
299
300- Bug #1569998: break inside a try statement (outside a loop) is now
301 recognized and rejected.
302
303- list.pop(x) accepts any object x following the __index__ protocol.
304
305- A number of places, including integer negation and absolute value,
306 were fixed to not rely on undefined behaviour of the C compiler
307 anymore.
308
309- Bug #1566800: make sure that EnvironmentError can be called with any
310 number of arguments, as was the case in Python 2.4.
311
312- Patch #1567691: super() and new.instancemethod() now don't accept
313 keyword arguments any more (previously they accepted them, but didn't
314 use them).
315
316- Fix a bug in the parser's future statement handling that led to "with"
317 not being recognized as a keyword after, e.g., this statement:
318 from __future__ import division, with_statement
319
320- Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
321
322- Fix %zd string formatting on Mac OS X so it prints negative numbers.
323
324- Allow exception instances to be directly sliced again.
325
326- Bug #1551432: Exceptions do not define an explicit __unicode__ method. This
327 allows calling unicode() on exceptions classes directly to succeed.
328
329- Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.
330 Also make sure that every exception class has __module__ set to
331 'exceptions'.
332
333- Bug #1550983: emit better error messages for erroneous relative
334 imports (if not in package and if beyond toplevel package).
335
336- Overflow checking code in integer division ran afoul of new gcc
337 optimizations. Changed to be more standard-conforming.
338
339- Patch #1542451: disallow continue anywhere under a finally.
340
341- Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
342
343- The return tuple from str.rpartition(sep) is (tail, sep, head) where
344 head is the original string if sep was not found.
345
346- Bug #1520864: unpacking singleton tuples in list comprehensions and
347 generator expressions (x for x, in ... ) works again. Fixing this problem
348 required changing the .pyc magic number. This means that .pyc files
349 generated before 2.5c2 will be regenerated.
350
351- ``with`` and ``as`` are now keywords.
352
353- Bug #1664966: Fix crash in exec if Unicode filename can't be decoded.
354
355- Issue #1537: Changed GeneratorExit's base class from Exception to
356 BaseException.
357
358- Fix Issue #1703448: A joined thread could show up in the
359 threading.enumerate() list after the join() for a brief period until
360 it actually exited.
361
362
363Library
364-------
365
366- Issue #1916. Added isgenerator() and isgeneratorfunction() to inspect.py.
367
368- #1224: Fixed bad url parsing when path begins with double slash.
369
370- ctypes instances that are not or do not contain pointers can now be
371 pickled.
372
373- Patch #1966: Break infinite loop in httplib when the servers
374 implements the chunked encoding incorrectly.
375
376- Rename rational.py to fractions.py and the rational.Rational class
377 to fractions.Fraction, to avoid the name clash with the abstract
378 base class numbers.Rational. See discussion in issue #1682.
379
380- The pickletools module now provides an optimize() function
381 that eliminates unused PUT opcodes from a pickle string.
382
383- #2021: Allow tempfile.NamedTemporaryFile and SpooledTemporaryFile
384 to be used in with statements by correctly supporting the context
385 management protocol.
386
387- #1979: Add rich comparisons to Decimal, and make Decimal comparisons
388 involving a NaN follow the IEEE 754 standard.
389
390- #2004: tarfile.py: Use mode 0700 for temporary directories and default
391 permissions for missing directories.
392
393- #175006: The debugger used to skip the condition of a "while" statement
394 after the first iteration. Now it correctly steps on the expression, and
395 breakpoints on the "while" statement are honored on each loop.
396
397- #1765140: add an optional delay argument to FileHandler and its
398 subclasses. Defaults to false (existing behaviour), but if true,
399 defers opening the file until the first call to emit().
400
401- The pprint module now supports sets and frozensets.
402
403- #1221598: add optional callbacks to ftplib.FTP's storbinary() and
404 storlines() methods. (Contributed by Phil Schwartz)
405
406- #1715: include sub-extension modules in pydoc's text output.
407
408- #1836: fix an off-by-one bug in TimedRotatingHandler's rollover
409 time calculation.
410
411- #1021: fix a bug to allow basicConfig to accept NOTSET as a level.
412
413- #932563: add LoggerAdapter convenience class to make it easier to add
414 contextual information in logging output.
415
416- #1760556: fix a bug to avoid FileHandler throwing an exception in
417 flush().
418
419- Bug #1530959: distutils' build command now uses different build directory
420 when building extension modules against versions of Python compiled
421 with ``--with-pydebug``.
422
423- #1555501: move plistlib from plat-mac directory to general library.
424
425- #1269: fix a bug in pstats.add_callers() and add a unit test file for
426 pstats.
427
428- #1669: don't allow shutil.rmtree() to be called on a symlink to a
429 directory.
430
431- #1664522: in urllib, don't read non-existing directories in ftp mode,
432 returning a 0-byte file -- raise an IOError instead.
433
434- #856047: respect the ``no_proxy`` environment variable when using the
435 ``http_proxy`` etc. environment variables in urllib.
436
437- #1178141: add a getcode() method to the addinfourls that urllib.open()
438 returns so that you can retrieve the HTTP status code.
439
440- Issue #1003: Fix zipfile decryption check, it would fail zip files
441 with extended local headers.
442
443- #1189216: Fix the zipfile module to work on archives with headers
444 past the 2**31 byte boundary.
445
446- #1336: fix a race condition in subprocess.Popen if the garbage
447 collector kicked in at the wrong time that would cause the process
448 to hang when the child wrote to stderr.
449
450- #1146: fix how textwrap breaks a long word that would start in the
451 last column of a line.
452
453- #1693149: trace.py --ignore-module - accept multiple comma-separated
454 modules to be given.
455
456- #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created
457 (and empty) instance. Thanks Jonathan Share.
458
459- #1861: Added an attribute to the sched module which returns an ordered
460 list of upcoming events (displayed as named tuples).
461
462- #1837: The queue module now also supports a LIFO queue and a priority queue.
463
464- Patch #1048820: Add insert-mode editing to curses.textpad.Textbox
465 (patch by Stefan Wehr). Also, fix an off-by-one bug in
466 Textbox.gather().
467
468- Issue #1831: ctypes now raises a TypeError if conflicting positional
469 and named arguments are passed to a Structure or Union initializer.
470 When too many positional arguments are passed, also a TypeError is
471 raised instead of a ValueError.
472
473- Convert the internal ctypes array type cache to a WeakValueDict so
474 that array types do not live longer than needed.
475
476- Issue #1786: pdb should use its own stdin/stdout around an exec call
477 and when creating a recursive instance.
478
479- Issue #1698398 Zipfile.printdir() crashed because the format string
480 expected a tuple type of length six instead of time.struct_time object.
481
482- Issue #1780: The Decimal constructor now accepts arbitrary leading
483 and trailing whitespace when constructing from a string.
484 Context.create_decimal no longer accepts trailing newlines.
485
486- Decimal.as_tuple(), difflib.find_longest_match() and inspect functions
487 that returned a tuple now return a named tuple.
488
489- Doctest now returns results as a named tuple for readability:
490 (0, 7) --> TestResults(failed=0, attempted=7)
491
492- Issue #846388. re.match is interruptible now, which is particularly
493 good for long regular expression matches.
494
495- pyexpat, patch #1137: allow setting buffer_size attribute
496 on Parser objects to set the character data buffer size.
497
498- Issue #1757: The hash of a Decimal instance is no longer affected by
499 the current context.
500
501- Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the
502 zipfile module.
503
504- Issue #1646: Make socket support the TIPC protocol.
505
506- Bug #1742: return os.curdir from os.path.relpath() if both arguments are
507 equal instead of raising an exception.
508
509- Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
510
511- Patch #1698: allow '@' in username parsed by urlparse.py.
512
513- Issue #1735: TarFile.extractall() now correctly sets directory permissions
514 and times.
515
Guido van Rossumea6775b2008-02-21 20:16:31 +0000516- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
517 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000518
519- Bug #1687: Fxed plistlib.py restricts <integer> to Python int when writing
520
521- Issue #1700: Regular expression inline flags incorrectly handle certain
522 unicode characters.
523
524- Issue #1689: PEP 3141, numeric abstract base classes.
525
526- Tk issue #1851526: Return results from Python callbacks to Tcl as
527 Tcl objects.
528
529- Issue #1642: Fix segfault in ctypes when trying to delete attributes.
530
531- Issue #1727780: Support loading pickles of random.Random objects created
532 on 32-bit systems on 64-bit systems, and vice versa. As a consequence
533 of the change, Random pickles created by Python 2.6 cannot be loaded
534 in Python 2.5.
535
536- Issue #1455: The distutils package now supports VS 2005 and VS 2008 for
537 both the msvccompiler and cygwincompiler.
538
539- Issue #1531: tarfile.py: Read fileobj from the current offset, do not
540 seek to the start.
541
542- Issue #1534: Added a dictionary sys.float_info with information about the
543 internal floating point type to the sys module.
544
545- Issue 1429818: patch for trace and doctest modules so they play nicely
546 together.
547
548- doctest made a bad assumption that a package's __loader__.get_data()
549 method used universal newlines.
550
551- Issue #1705170: contextlib.contextmanager was still swallowing
552 StopIteration in some cases. This should no longer happen.
553
554- Issue #1292: On alpha, arm, ppc, and s390 linux systems the
555 --with-system-ffi configure option defaults to "yes".
556
557- IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7
558 files are updated.
559
560- Issues #1181, #1287: unsetenv() is now called when the os.environ.pop()
561 and os.environ.clear() methods are used.
562
563- ctypes will now work correctly on 32-bit systems when Python is
564 configured with --with-system-ffi.
565
566- Patch #1203: ctypes now does work on OS X when Python is built with
567 --disable-toolbox-glue.
568
569- collections.deque() now supports a "maxlen" argument.
570
571- itertools.count() is no longer bounded to LONG_MAX. Formerly, it raised
572 an OverflowError. Now, automatically shifts from ints to longs.
573
574- Patch #1541463: optimize performance of cgi.FieldStorage operations.
575
576- Decimal is fully updated to the latest Decimal Specification (v1.66).
577
578- Bug #1153: repr.repr() now doesn't require set and dictionary items
579 to be orderable to properly represent them.
580
581- A 'c_longdouble' type was added to the ctypes module.
582
583- Bug #1709599: Run test_1565150 only if the file system is NTFS.
584
585- When encountering a password-protected robots.txt file the RobotFileParser
586 no longer prompts interactively for a username and password (bug 813986).
587
588- TarFile.__init__() no longer fails if no name argument is passed and
589 the fileobj argument has no usable name attribute (e.g. StringIO).
590
591- The functools module now provides 'reduce', for forward compatibility
592 with Python 3000.
593
594- Server-side SSL support and cert verification added, by Bill Janssen.
595
596- socket.ssl deprecated; use new ssl module instead.
597
598- uuid creation is now threadsafe.
599
600- EUC-KR codec now handles the cheot-ga-keut composed make-up hangul
601 syllables.
602
603- GB18030 codec now can encode additional two-byte characters that
604 are missing in GBK.
605
606- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
607
608- Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot
609 represent the result in a single character.
610
611- Bug #978833: Close https sockets by releasing the _ssl object.
612
613- Change location of the package index to pypi.python.org/pypi
614
615- Bug #1701409: Fix a segfault in printing ctypes.c_char_p and
616 ctypes.c_wchar_p when they point to an invalid location. As a
617 sideeffect the representation of these instances has changed.
618
619- tarfile.py: Added "exclude" keyword argument to TarFile.add().
620
621- Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple attribute.
622
623- The urlopen function of urllib2 now has an optional timeout parameter (note
624 that it actually works with HTTP, HTTPS, FTP and FTPS connections).
625
626- In ftplib, the FTP.ntransfercmd method, when in passive mode, now uses
627 the socket.create_connection function, using the timeout specified at
628 connection time.
629
630- Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it
631 reads a file that ends with incomplete sequence and sizehint argument
632 for .read() is specified.
633
634- Bug #1730389: Change time.strptime() to use ``\s+`` instead of ``\s*`` when
635 matching spaces in the specified format argument.
636
637- SF 1668596/1720897: distutils now copies data files
638 even if package_dir is empty.
639
640- sha now raises a DeprecationWarning upon import.
641
642- md5 now raises a DeprecationWarning upon import.
643
644- Issue1385: The hmac module now computes the correct hmac when using hashes
645 with a block size other than 64 bytes (such as sha384 and sha512).
646
647- mimify now raises a DeprecationWarning upon import.
648
649- MimeWriter now raises a DeprecationWarning upon import.
650
651- tarfile.py: Improved unicode support. Unicode input names are now
652 officially supported. Added "errors" argument to the TarFile class.
653
654- urllib.ftpwrapper class now accepts an optional timeout.
655
656- shlex.split() now has an optional "posix" parameter.
657
658- The posixfile module now raises a DeprecationWarning.
659
660- Remove the gopherlib module. This also leads to the removal of gopher
661 support in urllib/urllib2.
662
663- Fix bug in marshal where bad data would cause a segfault due to
664 lack of an infinite recursion check.
665
666- Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in
667 the directories).
668
669- HTML-escape the plain traceback in cgitb's HTML output, to prevent
670 the traceback inadvertently or maliciously closing the comment and
671 injecting HTML into the error page.
672
673- The popen2 module and os.popen* are deprecated. Use the subprocess module.
674
675- Added an optional credentials argument to SMTPHandler, for use with SMTP
676 servers which require authentication.
677
678- Patch #1695948: Added optional timeout parameter to SocketHandler.
679
680- Bug #1652788: Minor fix for currentframe.
681
682- Patch #1598415: Added WatchedFileHandler to better support external
683 log file rotation using e.g. newsyslog or logrotate. This handler is
684 only useful in Unix/Linux environments.
685
686- Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file
687 (as opposed to the command line) will now write file names ending in
688 ".cpp" too.
689
690- As specified in RFC 2616, an HTTP response like 2xx indicates that
691 the client's request was successfully received, understood, and accepted.
692 Now in these cases no error is raised in urllib (issue #1177) and urllib2.
693
694- Bug #1290505: time.strptime's internal cache of locale information is now
695 properly recreated when the locale is changed.
696
697- Patch #1685563: remove (don't add) duplicate paths in distutils.MSVCCompiler.
698
699- Added a timeout parameter to the constructor of other protocols
700 (telnetlib, ftplib, smtplib and poplib). This is second part of the
701 work started with create_connection() and timeout in httplib, and
702 closes patch #723312.
703
704- Patch #1676823: Added create_connection() to socket.py, which may be
705 called with a timeout, and use it from httplib (whose HTTPConnection
706 and HTTPSConnection now accept an optional timeout).
707
708- Bug #978833: Revert r50844, as it broke _socketobject.dup.
709
710- Bug #1675967: re patterns pickled with Python 2.4 and earlier can
711 now be unpickled with Python 2.5 and newer.
712
713- Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
714
715- Patch #1273829: os.walk() now has a "followlinks" parameter. If set to
716 True (which is not the default), it visits symlinks pointing to
717 directories.
718
719- Bug #1681228: the webbrowser module now correctly uses the default
720 GNOME or KDE browser, depending on whether there is a session of one
721 of those present. Also, it tries the Windows default browser before
722 trying Mozilla variants.
723
724- Patch #1339796: add a relpath() function to os.path.
725
726- Patch #1681153: the wave module now closes a file object it opened if
727 initialization failed.
728
729- Bug #767111: fix long-standing bug in urllib which caused an
730 AttributeError instead of an IOError when the server's response didn't
731 contain a valid HTTP status line.
732
733- Patch #957650: "%var%" environment variable references are now properly
734 expanded in ntpath.expandvars(), also "~user" home directory references
735 are recognized and handled on Windows.
736
737- Patch #1429539: pdb now correctly initializes the __main__ module for
738 the debugged script, which means that imports from __main__ work
739 correctly now.
740
741- The nonobvious commands.getstatus() function is now deprecated.
742
743- Patch #1393667: pdb now has a "run" command which restarts the debugged
744 Python program, optionally with different arguments.
745
746- Patch #1649190: Adding support for _Bool to ctypes as c_bool.
747
748- Patch #1530482: add pydoc.render_doc() which returns the documentation
749 for a thing instead of paging it to stdout, which pydoc.doc() does.
750
751- Patch #1533909: the timeit module now accepts callables in addition to
752 strings for the code to time and the setup code. Also added two
753 convenience functions for instantiating a Timer and calling its methods.
754
755- Patch #1537850: tempfile.NamedTemporaryFile now has a "delete" parameter
756 which can be set to False to prevent the default delete-on-close
757 behavior.
758
759- Patch #1581073: add a flag to textwrap that prevents the dropping of
760 whitespace while wrapping.
761
762- Patch #1603688: ConfigParser.SafeConfigParser now checks values that
763 are set for invalid interpolation sequences that would lead to errors
764 on reading back those values.
765
766- Added support for the POSIX.1-2001 (pax) format to tarfile.py. Extended
767 and cleaned up the test suite. Added a new testtar.tar.
768
769- Patch #1449244: Support Unicode strings in
770 email.message.Message.{set_charset,get_content_charset}.
771
772- Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS" to
773 pydoc's help keywords.
774
775- Patch #1555098: use str.join() instead of repeated string
776 concatenation in robotparser.
777
778- Patch #1635454: the csv.DictWriter class now includes the offending
779 field names in its exception message if you try to write a record with
780 a dictionary containing fields not in the CSV field names list.
781
782- Patch #1668100: urllib2 now correctly raises URLError instead of
783 OSError if accessing a local file via the file:// protocol fails.
784
785- Patch #1677862: Require a space or tab after import in .pth files.
786
787- Patch #1192590: Fix pdb's "ignore" and "condition" commands so they trap
788 the IndexError caused by passing in an invalid breakpoint number.
789
790- Patch #1599845: Add an option to disable the implicit calls to server_bind()
791 and server_activate() in the constructors for TCPServer, SimpleXMLRPCServer
792 and DocXMLRPCServer.
793
794- Bug #1531963: Make SocketServer.TCPServer's server_address always
795 be equal to calling getsockname() on the server's socket. Fixed by
796 patch #1545011.
797
798- Patch #742598: Add .timeout attribute to SocketServer that calls
799 .handle_timeout() when no requests are received.
800
801- Bug #1651235: When a tuple was passed to a ctypes function call,
802 Python would crash instead of raising an error.
803
804- Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)
805 returned string up to the first NUL character.
806
807- Patch #957003: Implement smtplib.LMTP.
808
809- Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
810
811- Patch #1675424: Added tests for uncovered code in the zipfile module.
812 The KeyError raised by Zipfile.getinfo for nonexistent names now has
813 a descriptive message.
814
815- Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
816
817- unittest now verifies more of its assumptions. In particular, TestCase
818 and TestSuite subclasses (not instances) are no longer accepted in
819 TestSuite.addTest(). This should cause no incompatibility since it
820 never made sense with ordinary subclasses -- the failure just occurred
821 later, with a more cumbersome exception.
822
823- Patch #787789: allow to pass custom TestRunner instances to unittest's
824 main() function.
825
826- Patches #1550273, #1550272: fix a few bugs in unittest and add a
827 comprehensive test suite for the module.
828
829- Patch #1001604: glob.glob() now returns unicode filenames if it was
830 given a unicode argument and os.listdir() returns unicode filenames.
831
832- Patch #1673619: setup.py identifies extension modules it doesn't know how
833 to build and those it knows how to build but that fail to build.
834
835- Patch #912410: Replace HTML entity references for attribute values
836 in HTMLParser.
837
838- Patch #1663234: you can now run doctest on test files and modules
839 using "python -m doctest [-v] filename ...".
840
841- Patch #1121142: Implement ZipFile.open.
842
843- Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
844
845- Added heapq.merge() for merging sorted input streams.
846
847- Added collections.namedtuple() for assigning field names to tuples.
848
849- Added itertools.izip_longest().
850
851- Have the encoding package's search function dynamically import using absolute
852 import semantics.
853
854- Patch #1647484: Renamed GzipFile's filename attribute to name.
855
856- Patch #1517891: Mode 'a' for ZipFile now creates the file if it
857 doesn't exist.
858
859- Patch #698833: Support file decryption in zipfile.
860
861- Patch #685268: Consider a package's __path__ in imputil.
862
863- Patch 1463026: Support default namespace in XMLGenerator.
864
865- Patch 1571379: Make trace's --ignore-dir facility work in the face of
866 relative directory names.
867
868- Bug #1600860: Search for shared python library in LIBDIR,
869 not lib/python/config, on "linux" and "gnu" systems.
870
871- Patch #1652681: tarfile.py: create nonexistent files in append mode and
872 allow appending to empty files.
873
874- Bug #1124861: Automatically create pipes if GetStdHandle fails in
875 subprocess.
876
877- Patch #1634778: add missing encoding aliases for iso8859_15 and
878 iso8859_16.
879
880- Patch #1638243: the compiler package is now able to correctly compile
881 a with statement; previously, executing code containing a with statement
882 compiled by the compiler package crashed the interpreter.
883
884- Bug #1643943: Fix time.strptime's support for the %U directive.
885
886- Patch #1507247: tarfile.py: use current umask for intermediate
887 directories.
888
889- Patch #1627441: close sockets properly in urllib2.
890
891- Bug #494589: make ntpath.expandvars behave according to its docstring.
892
893- Changed platform module API python_version_tuple() to actually
894 return a tuple (it used to return a list).
895
896- Added new platform module APIs python_branch(), python_revision(),
897 python_implementation() and linux_distribution().
898
899- Added support for IronPython and Jython to the platform module.
900
901- The sets module has been deprecated. Use the built-in set/frozenset types
902 instead.
903
904- Bug #1610795: make ctypes.util.find_library work on BSD systems.
905
906- Fixes for 64-bit Windows: In ctypes.wintypes, correct the
907 definitions of HANDLE, WPARAM, LPARAM data types. Make
908 parameterless foreign function calls work.
909
910- The version number of the ctypes package changed to "1.1.0".
911
912- Bug #1627575: logging: Added _open() method to FileHandler which can
913 be used to reopen files. The FileHandler instance now saves the
914 encoding (which can be None) in an attribute called "encoding".
915
916- Bug #411881: logging.handlers: bare except clause removed from
917 SMTPHandler.emit. Now, only ImportError is trapped.
918
919- Bug #411881: logging.handlers: bare except clause removed from
920 SocketHandler.createSocket. Now, only socket.error is trapped.
921
922- Bug #411881: logging: bare except clause removed from LogRecord.__init__.
923 Now, only ValueError, TypeError and AttributeError are trapped.
924
925- Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj argument.
926
927- Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
928
929- Patch #1262036: Prevent TarFiles from being added to themselves under
930 certain conditions.
931
932- Patch #1230446: tarfile.py: fix ExFileObject so that read() and tell()
933 work correctly together with readline().
934
935- Patch #1484695: The tarfile module now raises a HeaderError exception
936 if a buffer given to frombuf() is invalid.
937
938- Bug #1503765: Fix a problem in logging.config with spaces in comma-
939 separated lists read from logging config files.
940
941- Patch #1604907: Fix problems in logging.handlers caused at logging shutdown
942 when syslog handlers fail to initialize because of syslogd problems.
943
944- Patch #1608267: fix a race condition in os.makedirs() if the directory
945 to be created is already there.
946
947- Patch #1610437: fix a tarfile bug with long filename headers.
948
949- Patch #1371075: Make ConfigParser accept optional dict type
950 for ordering, sorting, etc.
951
952- Bug #1563807: _ctypes built on AIX fails with ld ffi error.
953
954- Bug #1598620: A ctypes Structure cannot contain itself.
955
956- Patch #1070046: Marshal new-style objects like InstanceType
957 in xmlrpclib.
958
959- cStringIO.truncate(-1) now raises an IOError, like StringIO and
960 regular files.
961
962- Patch #1472877: Fix Tix subwidget name resolution.
963
964- Patch #1594554: Always close a tkSimpleDialog on ok(), even
965 if an exception occurs.
966
967- Patch #1538878: Don't make tkSimpleDialog dialogs transient if
968 the parent window is withdrawn.
969
970- Bug #1597824: return the registered function from atexit.register()
971 to facilitate usage as a decorator.
972
973- Patch #1360200: Use unmangled_version RPM spec field to deal with
974 file name mangling.
975
976- Patch #1359217: Process 2xx response in an ftplib transfer
977 that precedes an 1xx response.
978
979- Patch #1355023: support whence argument for GzipFile.seek.
980
981- Patch #1065257: Support passing open files as body in
982 HTTPConnection.request().
983
984- Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()
985 weren't passing the message factory on to newly created Maildir/MH
986 objects.
987
988- Patch #1514543: mailbox.py: In the Maildir class, report errors if there's
989 a filename clash instead of possibly losing a message. (Patch by David
990 Watson.)
991
992- Patch #1514544: Try to ensure that messages/indexes have been physically
993 written to disk after calling .flush() or .close(). (Patch by David
994 Watson.)
995
996- Patch #1592250: Add elidge argument to Tkinter.Text.search.
997
998- Patch #838546: Make terminal become controlling in pty.fork()
999
1000- Patch #1351744: Add askyesnocancel helper for tkMessageBox.
1001
1002- Patch #1060577: Extract list of RPM files from spec file in
1003 bdist_rpm
1004
1005- Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
1006
1007- Patch #1583880: fix tarfile's problems with long names and posix/
1008 GNU modes.
1009
1010- Bug #1586448: the compiler module now emits the same bytecode for
1011 list comprehensions as the builtin compiler, using the LIST_APPEND
1012 opcode.
1013
1014- Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and
1015 fix all codecs file wrappers to work correctly with the "with"
1016 statement (bug #1586513).
1017
1018- Lib/modulefinder.py now handles absolute and relative imports
1019 correctly.
1020
1021- Patch #1567274: Support SMTP over TLS.
1022
1023- Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that
1024 ctypes isn't considered as requiring executable stacks.
1025
1026- ctypes callback functions only support 'fundamental' data types as
1027 result type. Raise an error when something else is used. This is a
1028 partial fix for Bug #1574584.
1029
1030- Fix turtle so that time.sleep is imported for the entire library. Allows
1031 the demo2 function to be executed on its own instead of only when the
1032 module is run as a script.
1033
1034- Bug #813342: Start the IDLE subprocess with -Qnew if the parent
1035 is started with that option.
1036
1037- Bug #1565150: Fix subsecond processing for os.utime on Windows.
1038
1039- Support for MSVC 8 was added to bdist_wininst.
1040
1041- Bug #1446043: correctly raise a LookupError if an encoding name given
1042 to encodings.search_function() contains a dot.
1043
1044- Bug #1560617: in pyclbr, return full module name not only for classes,
1045 but also for functions.
1046
1047- Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes
1048 keep_blank_values and strict_parsing keyword arguments.
1049
1050- Bug #1566602: correct failure of posixpath unittest when $HOME ends
1051 with a slash.
1052
1053- Bug #1565661: in webbrowser, split() the command for the default
1054 GNOME browser in case it is a command with args.
1055
1056- Made the error message for time.strptime when the data data and format do
1057 match be more clear.
1058
1059- Fix a bug in traceback.format_exception_only() that led to an error
1060 being raised when print_exc() was called without an exception set.
1061 In version 2.4, this printed "None", restored that behavior.
1062
1063- Make webbrowser.BackgroundBrowser usable in Windows (it wasn't because
1064 the close_fds arg to subprocess.Popen is not supported).
1065
1066- Reverted patch #1504333 to sgmllib because it introduced an infinite loop.
1067
1068- Patch #1553314: Fix the inspect.py slowdown that was hurting IPython & SAGE
1069 by adding smarter caching in inspect.getmodule()
1070
1071- Fix missing import of the types module in logging.config.
1072
1073- Patch #1550886: Fix decimal module context management implementation
1074 to match the localcontext() example from PEP 343.
1075
1076- Bug #1545341: The 'classifier' keyword argument to the Distutils setup()
1077 function now accepts tuples as well as lists.
1078
1079- Bug #1541863: uuid.uuid1 failed to generate unique identifiers
1080 on systems with low clock resolution.
1081
1082- Bug #1531862: Do not close standard file descriptors in subprocess.
1083
1084- idle: Honor the "Cancel" action in the save dialog (Debian bug #299092).
1085
1086- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when the
Guido van Rossumea6775b2008-02-21 20:16:31 +00001087 first chunk fed to the decoder started with a BOM, but was longer than 3
1088 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +00001089
1090- The implementation of UnicodeError objects has been simplified (start and end
1091 attributes are now stored directly as Py_ssize_t members).
1092
1093- Issue829951: In the smtplib module, SMTP.starttls() now complies with
1094 RFC 3207 and forgets any knowledge obtained from the server not obtained
1095 from the TLS negotiation itself. Patch contributed by Bill Fenner.
1096
1097- Issue1339: The smtplib.SMTP class has been refactored a bit such
1098 that the SMTP.starttls() caller no longer needs to call ehlo()
1099 beforehand. SMTP.starttls() now raises an exception of the server
1100 does not claim to support starttls. Adds the SMTP.ehlo_or_helo_if_needed()
1101 method. Patch contributed by Bill Fenner.
1102
1103
Christian Heimesbc873412007-12-08 22:11:32 +00001104Extension Modules
1105-----------------
1106
Christian Heimes043d6f62008-01-07 17:19:16 +00001107- Issue #1762972: Readded the reload() function as imp.reload()
Guido van Rossumea6775b2008-02-21 20:16:31 +00001108
Christian Heimes7131fd92008-02-19 14:21:46 +00001109- #2112: mmap.error is now a subclass of EnvironmentError and not a
1110 direct EnvironmentError
1111
Christian Heimesa156e092008-02-16 07:38:31 +00001112- Bug #2111: mmap segfaults when trying to write a block opened with PROT_READ
1113
1114- #2063: correct order of utime and stime in os.times() result on Windows.
Christian Heimesbc873412007-12-08 22:11:32 +00001115
Christian Heimes7131fd92008-02-19 14:21:46 +00001116- Updated ``big5hkscs`` codec to the HKSCS revision of 2004.
1117
1118- #1940: make it possible to use curses.filter() before curses.initscr()
1119 as the documentation says.
1120
1121- Backport of _fileio module from Python 3.0.
1122
1123- #1087741: mmap.mmap is now a class, not a factory function. It is also
1124 subclassable now.
1125
1126- Patch #1648: added ``sys.getprofile()`` and ``sys.gettrace()``.
1127
1128- Patch #1663329: added ``os.closerange()`` function to quickly close a range
1129 of file descriptors without considering errors.
1130
1131- Patch 976880: ``mmap`` objects now have an ``rfind`` method that
1132 works as expected. ``mmap.find`` also takes an optional ``end``
1133 parameter.
1134
1135- _winreg's HKEY object has gained __enter__ and __exit__ methods to support
1136 the context manager protocol. The _winreg module also gained a new function
1137 ``ExpandEnvironmentStrings`` to expand REG_EXPAND_SZ keys.
1138
1139- itertools.starmap() now accepts any iterable input. Previously, it required
1140 the function inputs to be tuples.
1141
1142- Issue #1646: Make socket support TIPC. The socket module now has support
1143 for TIPC under Linux, see http://tipc.sf.net/ for more information.
1144
1145- Added interface for Windows' WSAIoctl to socket object and added an example
1146 for a simple network sniffer.
1147
1148- Bug #1301: Bad assert in _tkinter fixed.
1149
1150- Added bdist_wininst executable for VS 2008.
1151
1152- Bug #1604: collections.deque.__init__(iterable) now clears any prior contents
1153 before adding elements from the iterable. This fix brings the behavior into
1154 line with that for list.__init__().
1155
1156- Added wide char functions to msvcrt module: getwch, getwche, putwch and
1157 ungetwch. The functions accept or return unicode.
1158
1159- os.access now returns True on Windows for any existing directory.
1160
1161- Added warnpy3k function to the warnings module.
1162
1163- Marshal.dumps() now expects exact type matches for int, long, float, complex,
1164 tuple, list, dict, set, and frozenset. Formerly, it would silently miscode
1165 subclasses of those types. Now, it raises a ValueError instead.
1166
1167- Patch #1388440: Add set_completion_display_matches_hook and
1168 get_completion_type to readline.
1169
1170- Bug #1649098: Avoid declaration of zero-sized array declaration in
1171 structure.
1172
1173- Removed the rgbimg module; been deprecated since Python 2.5.
1174
1175- Bug #1721309: prevent bsddb module from freeing random memory.
1176
1177- Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as
1178 intended for RECNO databases.
1179
1180- pybsddb.sf.net Bug #477182: Load the database flags at database open
1181 time so that opening a database previously created with the DB_DUP or
1182 DB_DUPSORT flag set will keep the proper behavior on subsequent opens.
1183 Specifically: dictionary assignment to a DB object will replace all
1184 values for a given key when the database allows duplicate values.
1185 DB users should use DB.put(k, v) when they want to store duplicates; not
1186 DB[k] = v.
1187
1188- Add the bsddb.db.DBEnv.lock_id_free method.
1189
1190- Bug #1686475: Support stat'ing open files on Windows again.
1191
1192- Patch #1185447: binascii.b2a_qp() now correctly quotes binary characters
1193 with ASCII value less than 32. Also, it correctly quotes dots only if
1194 they occur on a single line, as opposed to the previous behavior of
1195 quoting dots if they are the second character of any line.
1196
1197- Bug #1622896: fix a rare corner case where the bz2 module raised an
1198 error in spite of a succesful compression.
1199
1200- Patch #1654417: make operator.{get,set,del}slice use the full range
1201 of Py_ssize_t.
1202
1203- Patch #1646728: datetime.fromtimestamp fails with negative
1204 fractional times. With unittest.
1205
1206- Patch #1490190: posixmodule now includes os.chflags() and os.lchflags()
1207 functions on platforms where the underlying system calls are available.
1208
1209- Patch #1494140: Add documentation for the new struct.Struct object.
1210
1211- Patch #1432399: Support the HCI protocol for bluetooth sockets
1212
1213- Patch #1657276: Make NETLINK_DNRTMSG conditional.
1214
1215- Bug #1653736: Complain about keyword arguments to time.isoformat.
1216
1217- Bug #1486663: don't reject keyword arguments for subclasses of builtin
1218 types.
1219
1220- Patch #1610575: The struct module now supports the 't' code, for
1221 C99 _Bool.
1222
1223- Patch #1635058: ensure that htonl and friends never accept or
1224 return negative numbers, per the underlying C implementation.
1225
1226- Patch #1544279: Improve thread-safety of the socket module by moving
1227 the sock_addr_t storage out of the socket object.
1228
1229- Patch #1019808: fix bug that causes an incorrect error to be returned
1230 when a socket timeout is set and a connection attempt fails.
1231
1232- Speed up function calls into the math module.
1233
1234- Bug #1588217: don't parse "= " as a soft line break in binascii's
1235 a2b_qp() function, instead leave it in the string as quopri.decode()
1236 does.
1237
1238- Bug #1599782: Fix segfault on bsddb.db.DB().type().
1239
1240- Bug #1567666: Emulate GetFileAttributesExA for Win95.
1241
1242- Patch #1576166: Support os.utime for directories on Windows NT+.
1243
1244- Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
1245
1246- Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
1247 when encoding non-BMP unicode characters.
1248
1249- Bug #1556784: allow format strings longer than 127 characters in
1250 datetime's strftime function.
1251
1252- Fix itertools.count(n) to work with negative numbers again.
1253
1254- RLIMIT_SBSIZE was added to the resource module where available.
1255
1256- Bug #1551427: fix a wrong NULL pointer check in the win32 version
1257 of os.urandom().
1258
1259- Bug #1548092: fix curses.tparm seg fault on invalid input.
1260
1261- Patch #1114: fix curses module compilation on 64-bit AIX, & possibly
1262 other 64-bit LP64 platforms where attr_t is not the same size as a long.
1263 (Contributed by Luke Mewburn.)
1264
1265- Bug #1550714: fix SystemError from itertools.tee on negative value for n.
1266
1267- Fixed a few bugs on cjkcodecs:
1268 - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT correctly.
1269 - iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312
1270 codepoints to conform the standard.
1271 - iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2
1272 codepoints now.
1273
1274- Bug #1552726: in readline.c, avoid repeatedly polling in interactive
1275 mode by only placing a timeout on the select() if an input hook has
1276 been defined. This prevents an interactive Python from waking up 10
1277 times per second. Patch by Richard Boulton.
1278
1279- fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments
1280 were transposed.
1281
1282- Added support for linking the bsddb module against BerkeleyDB 4.5.x
1283 and 4.6.x.
1284
1285- Bug #1633621: if curses.resizeterm() or curses.resize_term() is called,
1286 update _curses.LINES, _curses.COLS, curses.LINES and curses.COLS.
1287
1288- Fix an off-by-one bug in locale.strxfrm().
1289
1290- Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.
1291
1292- Build using system ffi library on arm*-linux*.
1293
1294- Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
1295
1296- bsddb module: Fix memory leak when using database cursors on
1297 databases without a DBEnv.
1298
1299Tests
1300-----
1301
1302- Refactor test_logging to use doctest.
1303
1304- Refactor test_profile and test_cprofile to use the same code to profile.
1305
1306- Make test_runpy reentrant by fixing _check_module to clear out any module
1307 being tested. Was causing an error by __import__ doing a reload on the
1308 second run and thus suppressing bytecode recreation.
1309
1310- Capture socket connection resets and timeouts in test_socket_ssl and
1311 test_urllib2net and raise test.test_support.ResourceDenied.
1312
1313- Patch #1559413: Fix test_cmd_line if sys.executable contains a space.
1314
1315- Added test.test_support.TransientResource which is a context manager to
1316 surround calls to resources that are not guaranteed to work even if
1317 test.test_support.requires says that the resource should exist.
1318
1319- Added a test for slicing of an exception.
1320
1321- Added test.test_support.EnvironmentVarGuard. It's a class that provides a
1322 context manager so that one can temporarily set or unset environment
1323 variables.
1324
1325- Added some tests for modulefinder.
1326
1327- Converted test_imp to use unittest.
1328
1329- Fix bsddb test_basics.test06_Transactions to check the version
1330 number properly.
1331
1332- test.test_support.catch_warning is a new context manager that can be used
1333 to catch the warnings issued by the warning framework.
1334
1335
1336Tools
1337-----
1338
1339- Tools/scripts/reindent.py now creates the backup file using shutil.copy
1340 to preserve user/group and permissions. Added also a --nobackup option
1341 to not create the backup if the user is concerned regarding this. Check
1342 issue 1050828 for more details.
1343
1344- Tools/scripts/win_add2path.py was added. The simple script modifes the
1345 PATH environment var of the HKCU tree and adds the python bin and script
1346 directory.
1347
1348- Tools/18n/pygettext.py was added to the list of scripts installed by
1349 Tools/scripts/setup.py (tracker item 642309).
1350
1351- Added IronPython and Jython support to pybench (part of which
1352 was patch #1563844)
1353
1354- Made some minor changes to pybench output to allow the user
1355 to see which Python version is running pybench
1356
1357- Added support for the new platform module feature
1358 platform.python_implementation(); this will now be saved
1359 in the benchmark pickle
1360
1361
1362Documentation
1363-------------
1364
1365- RFE #1765140: Updated documentation on FileHandler and subclasses to
1366 include new optional delay argument.
1367
1368- Bug #932563: Added section on getting contextual information into logging
1369 output, and added documentation for the new LoggerAdapter class.
1370
1371- Bug #1295: Added information about caching of formatted exception
1372 information in the LogRecord by Formatter.format().
1373
1374- Bug #1637365: add subsection about "__name__ == __main__" to the
1375 Python tutorial.
1376
1377- Patch #1698768: updated the "using Python on the Mac" intro.
1378
1379- Bug #1569057: Document that calling file.next() when the file is open for
1380 writing is undefined.
1381
1382- Patch #1489771: the syntax rules in Python Reference Manual were
1383 updated to reflect the current Python syntax.
1384
1385- Patch #1686451: Fix return type for
1386 PySequence_{Count,Index,Fast_GET_SIZE}.
1387
1388- Patch #1679379: add documentation for fnmatch.translate().
1389
1390- Bug #1629566: clarify the docs on the return values of parsedate()
1391 and parsedate_tz() in email.utils and rfc822.
1392
1393- Patch #1671450: add a section about subclassing builtin types to the
1394 "extending and embedding" tutorial.
1395
1396- Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next
1397 docs.
1398
1399- Bug #1565919: document set types in the Language Reference.
1400
1401- Bug #1546052: clarify that PyString_FromString(AndSize) copies the
1402 string pointed to by its parameter.
1403
1404- Bug #1566663: remove obsolete example from datetime docs.
1405
1406- Bug #1541682: Fix example in the "Refcount details" API docs.
1407 Additionally, remove a faulty example showing PySequence_SetItem applied
1408 to a newly created list object and add notes that this isn't a good idea.
1409
1410
1411Tools/Demos
1412-----------
1413
1414- Patch #1552024: add decorator support to unparse.py demo script.
1415
1416- Make auto-generated python.vim file list built-ins and exceptions in
1417 alphatbetical order. Makes output more deterministic and easier to tell if
1418 the file is stale or not.
1419
1420- Bug #1546372: Fixed small bugglet in pybench that caused a missing
1421 file not to get reported properly.
1422
1423
1424Build
1425-----
1426
1427- Have the search path for building extensions follow the declared order in
1428 $CPPFLAGS and $LDFLAGS when adding directories from those environment
1429 variables.
1430
1431- Bug #1983: Added a check to pyport to verify that sizeof(pid_t) is
1432 smaller or equal sizeof(long).
1433
1434- Bug #1234: Fixed semaphore errors on AIX 5.2
1435
1436- Issue #1726: Remove Python/atof.c from PCBuild/pythoncore.vcproj
1437
1438- Removed PCbuild8/ directory and added a new build directory for VS 2005
1439 based on the VS 2008 build directory to PC/VS8.0. The script
1440 PCbuild/vs8to9.py was added to sync changes from PCbuild to PC/VS8.0.
1441
1442- Moved PCbuild/ directory for VS 2003 to PC/VS7.1 and renamed PCBuild9/
1443 directory to PCBuild/.
1444
1445- Bug #1699: Define _BSD_SOURCE only on OpenBSD.
1446
1447- Bug #1608: use -fwrapv when GCC supports it. This is important,
1448 newer GCC versions may optimize away overflow buffer overflow checks
1449 without this option!
1450
1451- Patch #1418: Make the AC_REPLACE_FUNCS object files actually work.
1452
1453- Add a FAST_LOOPS build option that speeds-up looping by trading away
1454 periodic threadstate and signal checking in tight loops. By default,
1455 this option is turned-off. It should only be enabled in debugged,
1456 performance critical applications.
1457
1458- Patch #786737: Allow building in a tree of symlinks pointing to
1459 a readonly source.
1460
1461- Bug #1737210: Change Manufacturer of Windows installer to PSF.
1462
1463- Bug #1746880: Correctly install DLLs into system32 folder on Win64.
1464
1465- Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD 4.1+.
1466
1467- Stop supporting AtheOS and cause a build error in configure for the platform.
1468
1469- Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS
1470 returned by python-config if Python was built with --enable-shared
1471 because that prevented the shared library from being used.
1472
1473- Patch #1569798: fix a bug in distutils when building Python from a
1474 directory within sys.exec_prefix.
1475
1476- Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.
1477
1478- Disable _XOPEN_SOURCE on NetBSD 1.x.
1479
1480- configure now checks whether gcc supports the PyArg_ParseTuple format
1481 attribute.
1482
1483- Bug #1578513: Cross compilation was broken by a change to configure.
1484 Repair so that it's back to how it was in 2.4.3.
1485
1486- Patch #1576954: Update VC6 build directory; remove redundant
1487 files in VC7.
1488
1489- Bug #1568842: Fix test for uintptr_t.
1490
1491- Patch #1540470, for OpenBSD 4.0.
1492
1493- Fix build failure on kfreebsd and on the hurd.
1494
1495- Fix the build of the library reference in info format.
1496
1497- Allow Emacs 22 for building the documentation in info format.
1498
1499- Makefile.pre.in(buildbottest): Run an optional script pybuildbot.identify
1500 to include some information about the build environment.
1501
1502
1503C API
1504-----
1505
1506- Unified naming convention for free lists and their limits. All free lists
1507 in Object/ are named ``free_list``, the counter ``numfree`` and the upper
1508 limit is a macro ``PyName_MAXFREELIST`` inside an #ifndef block.
1509
1510- ``PySet_Add()`` can now modify a newly created frozenset. Similarly to
1511 ``PyTuple_SetItem``, it can be used to populate a brand new frozenset; but
1512 it does not steal a reference to the added item.
1513
1514- Added ``PySet_Check()`` and ``PyFrozenSet_Check()`` to the set API.
1515
1516- Backport of PyUnicode_FromString(), _FromStringAndSize(), _Format and
1517 _FormatV from Python 3.0. Made PyLong_AsSsize_t and PyLong_FromSsize_t
1518 public functions.
1519
1520- Patch #1720595: add T_BOOL to the range of structmember types.
1521
1522- Issue #1534: Added ``PyFloat_GetMax()``, ``PyFloat_GetMin()`` and
1523 ``PyFloat_GetInfo()`` to the float API.
1524
1525- Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t# of w#
1526 format code incorrectly truncated the length to an int, even when
1527 PY_SSIZE_T_CLEAN is set. The str.decode method used to return incorrect
1528 results with huge strings.
1529
1530- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE
1531 and Py_REFCNT.
1532
1533- PEP 3123: Provide forward compatibility with Python 3.0, while keeping
1534 backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
1535 PyVarObject_HEAD_INIT.
1536
1537- Py_ssize_t fields work in structmember when HAVE_LONG_LONG is not defined.
1538
1539- Patch #1733960: Allow T_LONGLONG to accept ints.
1540
1541- T_PYSSIZET can now be used in PyMemberDef lists for Py_ssize_t members.
1542
1543- Added a new API function ``PyImport_ImportModuleNoBlock``.
1544
1545- Bug #1637022: Prefix AST symbols with _Py_.
1546
1547- Fix some leftovers from the conversion from int to Py_ssize_t
1548 (relevant to strings and sequences of more than 2**31 items).
1549
1550- Make _PyGILState_NoteThreadState() static, it was not used anywhere
1551 outside of pystate.c and should not be necessary.
1552
1553- ``PyImport_Import`` and ``PyImport_ImportModule`` now always do absolute
1554 imports. In earlier versions they might have used relative imports under
1555 some conditions.
1556
1557- Added case insensitive comparison methods ``PyOS_stricmp(char*, char*)``
1558 and ``PyOS_strnicmp(char*, char*, Py_ssize_t)``.
1559
1560- Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx macro
1561 so it can be used as an expression.
1562
1563
1564Windows
1565-------
1566
1567- Patch #1706: Drop support for Win9x, WinME and NT4. Python now requires
1568 Windows 2000 or greater. The _WINVER and NTDDI_VERSION macros are set to
1569 Win2k for x86/32bit builds and WinXP for AMD64 builds.
1570
1571- Conditionalize definition of _CRT_SECURE_NO_DEPRECATE
1572 and _CRT_NONSTDC_NO_DEPRECATE.
1573
1574- Bug #1216: Restore support for Visual Studio 2002.
1575
1576
1577Mac
1578---
1579
1580- cfmfile now raises a DeprecationWarning.
1581
1582- buildtools now raises a DeprecationWarning.
1583
1584- Removed the macfs module. It had been deprecated since Python 2.5. This
1585 lead to the deprecation of macostools.touched() as it relied solely on macfs
1586 and was a no-op under OS X.
1587
1588
1589What's New in Python 2.5 release candidate 1?
1590=============================================
1591
1592*Release date: 17-AUG-2006*
1593
1594Core and builtins
1595-----------------
1596
1597- Unicode objects will no longer raise an exception when being
1598 compared equal or unequal to a string and a UnicodeDecodeError
1599 exception occurs, e.g. as result of a decoding failure.
1600
1601 Instead, the equal (==) and unequal (!=) comparison operators will
1602 now issue a UnicodeWarning and interpret the two objects as
1603 unequal. The UnicodeWarning can be filtered as desired using
1604 the warning framework, e.g. silenced completely, turned into an
1605 exception, logged, etc.
1606
1607 Note that compare operators other than equal and unequal will still
1608 raise UnicodeDecodeError exceptions as they've always done.
1609
1610- Fix segfault when doing string formatting on subclasses of long.
1611
1612- Fix bug related to __len__ functions using values > 2**32 on 64-bit machines
1613 with new-style classes.
1614
1615- Fix bug related to __len__ functions returning negative values with
1616 classic classes.
1617
1618- Patch #1538606, Fix __index__() clipping. There were some problems
1619 discovered with the API and how integers that didn't fit into Py_ssize_t
1620 were handled. This patch attempts to provide enough alternatives
1621 to effectively use __index__.
1622
1623- Bug #1536021: __hash__ may now return long int; the final hash
1624 value is obtained by invoking hash on the long int.
1625
1626- Bug #1536786: buffer comparison could emit a RuntimeWarning.
1627
1628- Bug #1535165: fixed a segfault in input() and raw_input() when
1629 sys.stdin is closed.
1630
1631- On Windows, the PyErr_Warn function is now exported from
1632 the Python dll again.
1633
1634- Bug #1191458: tracing over for loops now produces a line event
1635 on each iteration. Fixing this problem required changing the .pyc
1636 magic number. This means that .pyc files generated before 2.5c1
1637 will be regenerated.
1638
1639- Bug #1333982: string/number constants were inappropriately stored
1640 in the byte code and co_consts even if they were not used, ie
1641 immediately popped off the stack.
1642
1643- Fixed a reference-counting problem in property().
1644
1645
Christian Heimesbc873412007-12-08 22:11:32 +00001646Library
1647-------
1648
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001649- Weakref dictionaries now inherit from MutableMapping.
1650 XXX their API still needs to be modernized (i.e. eliminate the iter methods).
1651
1652- Created new UserDict class in collections module. This one inherits from and
1653 complies with the MutableMapping ABC.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001654
Guido van Rossumea6775b2008-02-21 20:16:31 +00001655- Removed UserDict.DictMixin. Replaced all its uses with
1656 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001657
Guido van Rossume239b002008-01-06 00:44:20 +00001658- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001659
Guido van Rossume239b002008-01-06 00:44:20 +00001660- Issue #1585: IDLE uses non-existent xrange() function.
1661
1662- Issue #1578: Problems in win_getpass.
1663
1664
Georg Brandl52d168a2008-01-07 18:10:24 +00001665Build
1666-----
1667
1668- Renamed --enable-unicode configure flag to --with-wide-unicode, since
1669 Unicode strings can't be disabled anymore.
1670
1671
Guido van Rossume239b002008-01-06 00:44:20 +00001672C API
1673-----
1674
1675- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1676 Py_TYPE and Py_REFCNT.
1677
1678- New API PyImport_ImportModuleNoBlock(), works like PyImport_ImportModule()
1679 but won't block on the import lock (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001680
Christian Heimesbc873412007-12-08 22:11:32 +00001681
Fred Drake0e474a82007-10-11 18:01:43 +00001682What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001683===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001684
Guido van Rossum99533a92007-12-06 05:07:41 +00001685*Release date: 07-Dec-2007*
1686
1687(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001688
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001689Core and Builtins
1690-----------------
1691
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001692- str8 now has the same construction signature as bytes.
1693
Brett Cannon40430012007-10-22 20:24:51 +00001694- Comparisons between str and str8 now return False/True for ==/!=. sqlite3
1695 returns str8 when recreating on object from it's __conform__ value. The
1696 struct module returns str8 for all string-related formats. This was true
1697 before this change, but becomes more apparent thanks to string comparisons
1698 always being False.
1699
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001700- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode, buffer,
1701 encoding, newline)`
1702
1703- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1704
1705- Changed `__file__` and `co_filename` to unicode. The path names are decoded
1706 with `Py_FileSystemDefaultEncoding` and a new API method
1707 `PyUnicode_DecodeFSDefault(char*)` was added.
1708
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001709- io.open() and _fileio.FileIO have grown a new argument closefd. A false
1710 value disables the closing of the file descriptor.
1711
Guido van Rossum98297ee2007-11-06 21:34:58 +00001712- Added a new option -b to issues warnings (-bb for errors) about certain
1713 operations between bytes/buffer and str like str(b'') and comparsion.
1714
Christian Heimes58cb1b82007-11-13 02:19:40 +00001715- The standards streams sys.stdin, stdout and stderr may be None when the
1716 when the C runtime library returns an invalid file descriptor for the
1717 streams (fileno(stdin) < 0). For now this happens only for Windows GUI
1718 apps and scripts started with `pythonw.exe`.
1719
Christian Heimesbce52be2007-11-17 19:08:41 +00001720- Added PCbuild9 directory for VS 2008.
1721
1722- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to work
1723 around a name clash with VS 2008 on Windows.
1724
Christian Heimesff737952007-11-27 10:40:20 +00001725- Unbound methods are gone for good. ClassObject.method returns an ordinary
1726 function object, instance.method still returns a bound method object.
1727 The API of bound methods is cleaned up, too. The im_class attribute is
1728 removed and im_func + im_self are renamed to __func__ and __self__. The
1729 factory PyMethod_New takes only func and instance as argument.
1730
Christian Heimesf78b1c62007-12-02 16:52:32 +00001731- intobject.h is no longer included by Python.h. The remains were moved
1732 to longobject.h. It still exists to define several aliases from PyInt_
1733 to PyLong_ functions.
1734
Christian Heimesa37d4c62007-12-04 23:02:19 +00001735- Removed sys.maxint, use sys.maxsize instead.
1736
Christian Heimesbce52be2007-11-17 19:08:41 +00001737
Fred Drake0e474a82007-10-11 18:01:43 +00001738Extension Modules
1739-----------------
1740
1741- The `hotshot` profiler has been removed; use `cProfile` instead.
1742
1743
Brett Cannone9fd2312007-10-12 19:18:19 +00001744Library
1745-------
1746
1747- When loading an external file using testfile(), the passed-in encoding
1748 argument was being ignored if __loader__ is defined and forcing the source to
1749 be UTF-8.
1750
Guido van Rossum687b9c02007-10-25 23:18:51 +00001751- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have been
1752 removed in favor of the tempfile module.
1753
Christian Heimesc9543e42007-11-28 08:28:28 +00001754- Removed the 'new' module.
1755
1756- Removed all types from the 'types' module that are easily accessable through
1757 builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001758
Georg Brandl52d168a2008-01-07 18:10:24 +00001759
Guido van Rossum4405cf32007-08-30 17:16:55 +00001760What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001761==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001762
Guido van Rossum4405cf32007-08-30 17:16:55 +00001763*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001764
1765Core and Builtins
1766-----------------
1767
Martin v. Löwis47383402007-08-15 07:32:56 +00001768- PEP 3131: Support non-ASCII identifiers.
1769
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001770- PEP 3120: Change default encoding to UTF-8.
1771
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001772- PEP 3123: Use proper C inheritance for PyObject.
1773
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001774- Removed the __oct__ and __hex__ special methods and added a bin()
1775 builtin function.
1776
1777- PEP 3127: octal literals now start with "0o". Old-style octal literals
1778 are invalid. There are binary literals with a prefix of "0b".
1779 This also affects int(x, 0).
1780
Guido van Rossume7ba4952007-06-06 23:52:48 +00001781- None, True, False are now keywords.
1782
Guido van Rossum29478ef2007-05-29 00:39:44 +00001783- PEP 3119: isinstance() and issubclass() can be overridden.
1784
Guido van Rossumebe3e162007-05-17 18:20:34 +00001785- Remove BaseException.message.
1786
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001787- Remove tuple parameter unpacking (PEP 3113).
1788
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001789- Remove the f_restricted attribute from frames. This naturally leads to the
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001790 removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
1791
Guido van Rossum0368b722007-05-11 16:50:42 +00001792- PEP 3132 was accepted. That means that you can do ``a, *b = range(5)``
1793 to assign 0 to a and [1, 2, 3, 4] to b.
1794
Guido van Rossum805365e2007-05-07 22:24:25 +00001795- range() now returns an iterator rather than a list. Floats are not allowed.
1796 xrange() is no longer defined.
1797
Nick Coghlan650f0d02007-04-15 12:05:43 +00001798- Patch #1660500: hide iteration variable in list comps, add set comps
1799 and use common code to handle compilation of iterative expressions
1800
Guido van Rossume27dc722007-03-27 22:37:34 +00001801- By default, != returns the opposite of ==, unless the latter returns
1802 NotImplemented.
1803
Collin Winter670e6922007-03-21 02:57:17 +00001804- Patch #1680961: sys.exitfunc has been removed and replaced with a private
1805 C-level API.
1806
Georg Brandl801dd732007-03-18 20:18:31 +00001807- PEP 3115: new metaclasses: the metaclass is now specified as a
1808 keyword arg in the class statement, which can now use the full syntax of
1809 a parameter list. Also, the metaclass can implement a __prepare__ function
1810 which will be called to create the dictionary for the new class namespace.
1811
Georg Brandl428f0642007-03-18 18:35:15 +00001812- The long-deprecated argument "pend" of PyFloat_FromString() has been
1813 removed.
1814
Georg Brandle32b4222007-03-10 22:13:27 +00001815- The dir() function has been extended to call the __dir__() method on
1816 its argument, if it exists. If not, it will work like before. This allows
1817 customizing the output of dir() in the presence of a __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001818
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001819- Removed support for __members__ and __methods__.
1820
Georg Brandle32b4222007-03-10 22:13:27 +00001821- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001822
Georg Brandle32b4222007-03-10 22:13:27 +00001823- input() became raw_input(): the name input() now implements the
Guido van Rossum0240b922007-02-26 21:23:50 +00001824 functionality formerly known as raw_input(); the name raw_input()
1825 is no longer defined.
1826
Brett Cannon39590462007-02-26 22:01:14 +00001827- Classes listed in an 'except' clause must inherit from BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001828
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001829- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001830 and .keys(), .items(), .values() return dict views, which behave
1831 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001832
Guido van Rossum8b545362007-02-09 23:52:14 +00001833- PEP 3105: print is now a function. Also (not in the PEP) the
1834 'softspace' attribute of files is now gone (since print() doesn't use
1835 it). A side effect of this change is that you can get incomplete
1836 output lines in interactive sessions:
1837
1838 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001839 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001840
1841 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001842
Brett Cannon398db8b2007-01-29 23:44:37 +00001843- PEP 3102: keyword-only arguments.
1844
Guido van Rossumd4588c12007-02-13 19:55:23 +00001845- Int/Long unification is complete. The 'long' built-in type
Guido van Rossumec7027f2007-01-30 00:00:40 +00001846 and literals with trailing 'L' or 'l' have been removed.
1847 Performance may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001848
1849- 'except E, V' must now be spelled as 'except E as V' and deletes V
1850 at the end of the except clause; V must be a simple name.
1851
Neal Norwitzc1505362006-12-28 06:47:50 +00001852- Added function annotations per PEP 3107.
1853
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001854- Added nonlocal declaration from PEP 3104
1855
1856 >>> def f(x):
1857 ... def inc():
1858 ... nonlocal x
1859 ... x += 1
1860 ... return x
1861 ... return inc
1862 ...
1863 >>> inc = f(0)
1864 >>> inc()
1865 1
1866 >>> inc()
1867 2
1868
Georg Brandl66a796e2006-12-19 20:50:34 +00001869- Moved intern() to sys.intern().
1870
1871- exec is now a function.
1872
1873- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001874
Neal Norwitz4886cc32006-08-21 17:06:07 +00001875- Classic classes are a thing of the past. All classes are new style.
1876
1877- Exceptions *must* derive from BaseException.
1878
1879- Integer division always returns a float. The -Q option is no more.
1880 All the following are gone:
1881 * PyNumber_Divide and PyNumber_InPlaceDivide
1882 * __div__, __rdiv__, and __idiv__
1883 * nb_divide, nb_inplace_divide
1884 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1885 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1886 if we want to re-use __div__ and friends. If we do, it will make
1887 it harder to write code for both 2.x and 3.x.)
1888
1889- 'as' and 'with' are keywords.
1890
1891- Absolute import is the default behavior for 'import foo' etc.
1892
Neal Norwitz378b2c92006-08-29 07:57:22 +00001893- Removed support for syntax:
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001894 backticks (ie, `x`), <>
Neal Norwitz378b2c92006-08-29 07:57:22 +00001895
Neal Norwitz4886cc32006-08-21 17:06:07 +00001896- Removed these Python builtins:
Neal Norwitz01688022007-08-12 00:43:29 +00001897 apply(), callable(), coerce(), execfile(), file(), reduce(), reload()
Neal Norwitz4886cc32006-08-21 17:06:07 +00001898
Neal Norwitz378b2c92006-08-29 07:57:22 +00001899- Removed these Python methods:
1900 {}.has_key
1901
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001902- Removed these opcodes:
1903 BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT
1904
1905- Remove C API support for restricted execution.
1906
Guido van Rossumcf1be882007-08-30 22:07:17 +00001907- zip(), map() and filter() now return iterators, behaving like their
1908 itertools counterparts. This also affect map()'s behavior on
1909 sequences of unequal length -- it now stops after the shortest one
1910 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001911
1912- Additions:
Guido van Rossumcf1be882007-08-30 22:07:17 +00001913 set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001914
1915- Added class decorators per PEP 3129.
1916
1917
1918Extension Modules
1919-----------------
1920
1921- Remove the imageop module. Obsolete long with its unit tests becoming
1922 useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001923
1924- Removed these attributes from Python modules:
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001925 * operator module: div, idiv, __div__, __idiv__, isCallable, sequenceIncludes
Guido van Rossume7ba4952007-06-06 23:52:48 +00001926 * sys module: exc_clear(), exc_type, exc_value, exc_traceback
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001927
1928
1929Library
1930-------
1931
1932- Remove the compiler package. Use of the _ast module and (an eventual)
1933 AST -> bytecode mechanism.
1934
1935- Removed these modules:
Guido van Rossum33d26892007-08-05 15:29:28 +00001936 * audiodev, Bastion, bsddb185, exceptions, linuxaudiodev,
1937 md5, MimeWriter, mimify, popen2,
1938 rexec, sets, sha, stringold, strop, sunaudiodev, timing, xmllib.
1939
1940- Moved these modules to Tools/Demos:
1941 * toaiff
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001942
1943- Remove obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL, DEVICE,
1944 ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile, IOCTL, jpeg,
1945 panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
1946
1947- Remove obsolete functions:
1948 * commands.getstatus(), os.popen*,
1949
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001950- Remove functions in the string module that are also string methods;
1951 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001952
1953- Remove support for long obsolete platforms: plat-aix3, plat-irix5.
1954
1955- Remove xmlrpclib.SlowParser. It was based on xmllib.
1956
1957- Patch #1680961: atexit has been reimplemented in C.
1958
Walter Dörwald41980ca2007-08-16 21:55:45 +00001959- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1960
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001961
1962Build
1963-----
1964
1965C API
1966-----
1967
1968- Removed these Python slots:
1969 __coerce__, __div__, __idiv__, __rdiv__
Neal Norwitz4886cc32006-08-21 17:06:07 +00001970
Neal Norwitz4886cc32006-08-21 17:06:07 +00001971- Removed these C APIs:
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001972 PyNumber_Coerce(), PyNumber_CoerceEx(), PyMember_Get, PyMember_Set
Neal Norwitz4886cc32006-08-21 17:06:07 +00001973
1974- Removed these C slots/fields:
1975 nb_divide, nb_inplace_divide
1976
1977- Removed these macros:
Neal Norwitz30d1c512007-08-19 22:48:23 +00001978 staticforward, statichere, PyArg_GetInt, PyArg_NoArgs, _PyObject_Del
Neal Norwitz4886cc32006-08-21 17:06:07 +00001979
1980- Removed these typedefs:
1981 intargfunc, intintargfunc, intobjargproc, intintobjargproc,
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001982 getreadbufferproc, getwritebufferproc, getsegcountproc, getcharbufferproc,
1983 memberlist
Neal Norwitz4886cc32006-08-21 17:06:07 +00001984
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001985
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001986Tests
1987-----
1988
Brett Cannonced04e02005-02-13 22:53:22 +00001989Documentation
1990-------------
1991
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001992Mac
1993---
1994
Guido van Rossume7ba4952007-06-06 23:52:48 +00001995- The cfmfile was removed.
1996
1997
Guido van Rossum845702c2007-08-30 18:44:53 +00001998Platforms
1999---------
2000
2001- Support for BeOS and AtheOS was removed (according to PEP 11).
2002
2003- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
2004
Hye-Shik Chang4e422812005-07-17 02:36:59 +00002005
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00002006Tools/Demos
2007-----------
2008
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00002009**(For information about older versions, consult the HISTORY file.)**