blob: 9fb3ddd85480dae0e23013d0924a7f446fa96f69 [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
Benjamin Peterson6570d072008-11-07 03:51:42 +00007What's New in Python 3.0 release candiate 3?
8============================================
Barry Warsawa7c37302008-11-07 03:46:33 +00009
10*Release date: XX-XXX-2008*
11
Benjamin Peterson6570d072008-11-07 03:51:42 +000012
Barry Warsawa7c37302008-11-07 03:46:33 +000013Core and Builtins
14-----------------
15
Benjamin Peterson4f39d222008-11-18 22:37:15 +000016- Issue #4349: sys.path included a non-existent platform directory because of a
17 faulty Makefile.
18
Martin v. Löwis276c3712008-11-17 16:22:11 +000019- Issue #3327: Don't overallocate in the modules_by_index list.
20
Raymond Hettinger7d99f092008-11-16 11:44:54 +000021- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000022 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000023 subclasses would be created without their __init__() method being called.
24 The corrected behavior brings sets into line with lists and dicts.
25
Mark Dickinson4a1f5932008-11-12 23:23:36 +000026- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
27 True, even when x doesn't compare equal to itself. This was a regression
28 from 2.6.
29
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000030- Issue #3705: Command-line arguments were not correctly decoded when the
31 terminal does not use UTF8.
32
Barry Warsawa7c37302008-11-07 03:46:33 +000033Library
34-------
35
Brett Cannon58425d32008-11-21 00:17:53 +000036- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
37 keys are now written out in UTF-8.
38
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000039- Issue #4338: Fix distutils upload command.
40
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000041- Issue #4354: Fix distutils register command.
42
Martin v. Löwis22d297b2008-11-19 09:14:30 +000043- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
44
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000045- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
46 uses ``kwonlydefaults`` instead of ``kwdefaults``.
47
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000048- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
49
50- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +000051
Martin v. Löwisbfda5442008-11-07 18:54:51 +000052Build
53-----
54
Martin v. Löwisa632a752008-11-19 13:55:07 +000055- Issue #4289: Remove Cancel button from AdvancedDlg.
56
Martin v. Löwisbfda5442008-11-07 18:54:51 +000057- Issue #1656675: Register a drop handler for .py* files on Windows.
58
Benjamin Peterson06fd5f82008-11-08 17:24:34 +000059Tools/Demos
60-----------
61
62- Demos of the socketserver module now work with Python 3.
63
Barry Warsawa7c37302008-11-07 03:46:33 +000064
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000065What's New in Python 3.0 release candidate 2
66============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +000067
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000068*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +000069
70Core and Builtins
71-----------------
72
Benjamin Petersond968e272008-11-05 22:48:33 +000073- Issue #4211: The __path__ attribute of frozen packages is now a list instead
74 of a string as required by PEP 302.
75
Benjamin Peterson93ef79c2008-11-05 22:49:09 +000076- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +000077
Christian Heimes933238a2008-11-05 19:44:21 +000078- Issue #3714: Fixed nntplib by using bytes where appropriate.
79
Christian Heimesfb5faf02008-11-05 19:39:50 +000080- Issue #1210: Fixed imaplib and its documentation.
81
Christian Heimesecc42a22008-11-05 19:30:32 +000082- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
83 method on file objects with closefd=False. The file descriptor is still
84 kept open but the file object behaves like a closed file. The ``FileIO``
85 object also got a new readonly attribute ``closefd``.
86
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +000087- Issue #3626: On cygwin, starting python with a non-existent script name
88 would not display anything if the file name is only 1 character long.
89
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +000090- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
91 method does not return iterators for the 4th and 5th items.
92
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +000093- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +000094
Christian Heimes5833a2f2008-10-30 21:40:04 +000095- Issue #4213: The file system encoding is now normalized by the
96 codec subsystem, for example UTF-8 is turned into utf-8.
97
Christian Heimes9c94ba42008-10-30 21:34:02 +000098- Issue #4200: Changed the atexit module to store its state in its
99 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
100
Christian Heimesfec925b2008-10-30 21:22:55 +0000101- Issue #4237: io.FileIO() was raising invalid warnings caused by
102 insufficient initialization of PyFileIOObject struct members.
103
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000104- Issue #4170: Pickling a collections.defaultdict object would crash the
105 interpreter.
106
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000107- Issue #4146: Compilation on OpenBSD has been restored.
108
Brett Cannonda780432008-10-17 03:38:50 +0000109- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
110
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000111- Issues #2384 and #3975: Tracebacks were not correctly printed when the
112 source file contains a ``coding:`` header: the wrong line was displayed, and
113 the encoding was not respected.
114
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000115- Issue #3740: Null-initialize module state.
116
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000117- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
118
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000119- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
120 contains non-ascii characters.
121
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000122- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
123
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000124Library
125-------
126
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000127- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
128 to call the base __init__ method.
129
130- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000131
Martin v. Löwis33b64502008-10-15 05:58:17 +0000132- Issue #4072: Restore build_py_2to3.
133
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000134- Issue #4014: Don't claim that Python has an Alpha release status, in addition
135 to claiming it is Mature.
136
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000137- Issue #3187: Add sys.setfilesystemencoding.
138
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000139- Issue #3187: Better support for "undecodable" filenames. Code by Victor
140 Stinner, with small tweaks by GvR.
141
Martin v. Löwis601149b2008-09-29 22:19:08 +0000142- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
143 true singleton object.
144
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000145- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
146
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000147- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
148 raise a TypeError: "'tuple' object is not callable" instead of the expected
149 dbm.error.
150
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000151- Bug #3884: Make the turtle module toplevel again.
152
Thomas Heller1308c262008-09-24 19:01:29 +0000153- Issue #3547: Fixed ctypes structures bitfields of varying integer
154 sizes.
155
Gerhard Häring6117f422008-09-22 06:04:51 +0000156Extension Modules
157-----------------
158
159- Issue #3659: Subclasses of str didn't work as SQL parameters.
160
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000161Build
162-----
163
Martin v. Löwis900646e2008-11-06 17:30:03 +0000164- Issue #4120: Exclude manifest from extension modules in VS2008.
165
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000166- Issue #4091: Install pythonxy.dll in system32 again.
167
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000168- Issue #4018: Disable "for me" installations on Vista.
169
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000170- Issue #4204: Fixed module build errors on FreeBSD 4.
171
Martin v. Löwis33b64502008-10-15 05:58:17 +0000172Tools/Demos
173-----------
174
Martin v. Löwis869bad92008-10-17 15:54:44 +0000175- Issue #3717: Fix Demo/embed/demo.c.
176
Martin v. Löwis33b64502008-10-15 05:58:17 +0000177- Issue #4072: Add a distutils demo for build_py_2to3.
178
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000179
Barry Warsaw8509df72008-08-21 03:02:47 +0000180What's New in Python 3.0 release candidate 1
181============================================
182
Barry Warsawb8854802008-09-18 03:00:28 +0000183*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000184
185Core and Builtins
186-----------------
187
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000188- Issue #3827: memoryview lost its size attribute in favor of using len(view).
189
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000190- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
191
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000192- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000193 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
194 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000195
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000196- Issue #3279: Importing site at interpreter was failing silently because the
197 site module uses the open builtin which was not initialized at the time.
198
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000199- Issue #3660: Corrected a reference leak in str.encode() when the encoder
200 does not return a bytes object.
201
202- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000203 error conditions.
204
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000205- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000206 tokenized by either a file path or file pointer for the benefit of
207 PyTokenizer_FindEncoding().
208
Antoine Pitroufff95302008-09-03 18:58:51 +0000209- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
210 these systems, the mbstowcs() function is slightly buggy and must be
211 replaced with strlen() for the purpose of counting of number of wide
212 characters needed to represent the multi-byte character string.
213
Antoine Pitrou658fad82008-09-03 18:34:34 +0000214- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
215 could be easily encountered under Windows in debug mode when exercising
216 the recursion limit checking code, due to bogus handling of recursion
217 limit when USE_STACKCHEK was enabled.
218
Brett Cannon54bd41d2008-09-02 04:01:42 +0000219- Issue 3639: The _warnings module could segfault the interpreter when
220 unexpected types were passed in as arguments.
221
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000222- Issue #3712: The memoryview object had a reference leak and didn't support
223 cyclic garbage collection.
224
Antoine Pitrouf71995782008-08-29 18:37:05 +0000225- Issue #3668: Fix a memory leak with the "s*" argument parser in
226 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
227 was correctly parsed but parsing of subsequent arguments failed.
228
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000229- Issue #3611: An exception __context__ could be cleared in a complex pattern
230 involving a __del__ method re-raising an exception.
231
Antoine Pitrouec569b72008-08-26 22:40:48 +0000232- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
233 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
234 mechanism. In the process, fix a bug where isinstance() and issubclass(),
235 when given a tuple of classes as second argument, were looking up
236 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
237 type object.
238
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000239- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
240
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000241- Issue #3651: Fix various memory leaks when using the buffer
242 interface, or when the "s#" code of PyArg_ParseTuple is given a
243 bytes object.
244
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000245- Issue #3657: Fix uninitialized memory read when pickling longs.
246 Found by valgrind.
247
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000248- Apply security patches from Apple.
249
Neal Norwitz2f99b242008-08-24 05:48:10 +0000250- Fix crashes on memory allocation failure found with failmalloc.
251
252- Fix memory leaks found with valgrind and update suppressions file.
253
254- Fix compiler warnings in opt mode which would lead to invalid memory reads.
255
256- Fix problem using wrong name in decimal module reported by pychecker.
257
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000258- Issue #3650: Fixed a reference leak in bytes.split('x').
259
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000260- bytes(o) now tries to use o.__bytes__() before using fallbacks.
261
Gregory P. Smith207f2112008-09-07 06:29:10 +0000262- Issue #1204: The configure script now tests for additional libraries
263 that may be required when linking against readline. This fixes issues
264 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
265
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000266C API
267-----
268
269- PyObject_Bytes and PyBytes_FromObject were added.
270
Barry Warsaw8509df72008-08-21 03:02:47 +0000271Library
272-------
273
Guido van Rossum698280d2008-09-10 17:44:35 +0000274- Issue #3756: make re.escape() handle bytes as well as str.
275
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000276- Issue #3800: fix filter() related bug in formatter.py.
277
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000278- Issue #874900: fix behaviour of threading module after a fork.
279
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000280- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
281
282- Issue #3776: Deprecate the bsddb package for removal in 3.0.
283
284- Issue #3762: platform.architecture() fails if python is lanched via
285 its symbolic link.
286
Antoine Pitroud79dc622008-09-05 00:03:33 +0000287- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
288
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000289- Issue #3160: the "bdist_wininst" distutils command didn't work.
290
Guilherme Polob212b752008-09-04 11:21:31 +0000291- Issue #1658: tkinter changes dict size during iteration in both
292 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
293
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000294- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000295 It is now maintained outside of the standard library at
296 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000297
Facundo Batistac469d4c2008-09-03 22:49:01 +0000298- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
299 to the urlparse one. Added a DeprecationWarning in the old module, it
300 will be deprecated in the future.
301
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000302- Issue #3719: platform.architecture() fails if there are spaces in the
303 path to the Python binary.
304
Brett Cannonec92e182008-09-02 02:46:59 +0000305- Issue 3602: As part of the merge of r66135, make the parameters on
306 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
307
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000308- The deprecation warnings for the camelCase threading API names were removed.
309
Jesse Noller338f5782008-09-03 18:22:19 +0000310- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
311 SEM_VALUE_MAX.
312
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000313Extension Modules
314-----------------
315
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000316- Issue #3782: os.write() must not accept unicode strings.
317
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000318- Issue #2975: When compiling several extension modules with Visual Studio 2008
319 from the same python interpreter, some environment variables would grow
320 without limit.
321
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000322- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
323 exploitation of poor argument checking.
324
Jesus Cea6ba33292008-08-31 14:12:11 +0000325- bsddb code updated to version 4.7.3pre2. This code is the same than
326 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
327 The Python code is automatically translated using "2to3". Please, do not
328 update this code in Python 3.0 by hand. Update the 2.6 one and then
329 do "2to3".
330
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000331- The _bytesio and _stringio modules are now compiled into the python binary.
332
Gregory P. Smith693fc462008-09-06 20:13:06 +0000333- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
334 mutable bytearray objects where they should have been using immutable bytes.
335
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000336- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
337 return bytes objects instead of bytearray objects.
338
Gregory P. Smith693fc462008-09-06 20:13:06 +0000339
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000340Tools/Demos
341-----------
342
343- Fix Misc/gdbinit so it works.
344
Barry Warsaw8509df72008-08-21 03:02:47 +0000345
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000346Build
347-----
348
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000349- Issue #3812: Failed to build python if configure --without-threads.
350
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000351- Issue #3791: Remove the bsddb module from the Windows installer, and the
352 core bsddb library from the Windows build files.
353
354
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000355What's new in Python 3.0b3?
356===========================
357
Barry Warsaw57c10582008-08-21 02:39:51 +0000358*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000359
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000360Core and Builtins
361-----------------
362
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000363- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
364 arguments.
365
Antoine Pitrou616d2852008-08-19 22:09:34 +0000366- Issue #2394: implement more of the memoryview API, with the caveat that
367 only one-dimensional contiguous buffers are supported and exercised right
368 now. Slicing, slice assignment and comparison (equality and inequality)
369 have been added. Also, the tolist() method has been implemented, but only
370 for byte buffers. Endly, the API has been updated to return bytes objects
371 wherever it used to return bytearrays.
372
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000373- Issue #3560: clean up the new C PyMemoryView API so that naming is
374 internally consistent; add macros PyMemoryView_GET_BASE() and
375 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
376 without relying on a particular implementation; remove the ill-named
377 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
378
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000379- ctypes function pointers that are COM methods have a boolean True
380 value again.
381
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000382- Issue #1819: function calls with several named parameters are now on
383 average 35% faster (as measured by pybench).
384
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000385- The undocumented C APIs PyUnicode_AsString() and
386 PyUnicode_AsStringAndSize() were made private to the interpreter, in
387 order to be able to refine their interfaces for Python 3.1.
388
389 If you need to access the UTF-8 representation of a Unicode object
390 as bytes string, please use PyUnicode_AsUTF8String() instead.
391
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000392- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
393 to Python 3.0's stricter semantics which allow to avoid successive
394 reallocations of the result string (this also affects str.join()).
395
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000396
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000397Library
398-------
399
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000400- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
401 a build problem on MacOS with CJK locales. It adds four temporary
402 mappings to existing legacy codecs that are virtually compatible
403 with Mac encodings. They will be replaced by codecs correctly
404 implemented in 3.1.
405
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000406- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
407 "global name 'header' is not defined".
408
Antoine Pitroufd036452008-08-19 17:56:33 +0000409- Issue #2834: update the regular expression library to match the unicode
410 standards of py3k. In other words, mixing bytes and unicode strings
411 (be it as pattern, search string or replacement string) raises a TypeError.
412 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
413 and can be disabled by specifying a new re.ASCII flag; as for bytes
414 patterns, ASCII matching is the only option and trying to specify re.UNICODE
415 for such patterns raises a ValueError.
416
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000417- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
418 Code contributed by Matt Giuca. quote() now encodes the input
419 before quoting, unquote() decodes after unquoting. There are
420 new arguments to change the encoding and errors settings.
421 There are also new APIs to skip the encode/decode steps.
422 [un]quote_plus() are also affected.
423
Nick Coghlan36f49522008-08-18 12:31:52 +0000424- Issue #2235: numbers.Number now blocks inheritance of the default id()
425 based hash because that hash mechanism is not correct for numeric types.
426 All concrete numeric types that inherit from Number (rather than just
427 registering with it) must explicitly provide a hash implementation in
428 order for their instances to be hashable.
429
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000430- Issue #2676: in the email package, content-type parsing was hanging on
431 pathological input because of quadratic or exponential behaviour of a
432 regular expression.
433
Antoine Pitrou87695762008-08-14 22:44:29 +0000434- Issue #3476: binary buffered reading through the new "io" library is now
435 thread-safe.
436
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000437- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
438 menu entries were not deleted.
439
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000440- Remove the TarFileCompat class from tarfile.py.
441
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000442- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
443 accepts the same parameters. It just checks that its first argument is an
444 integer.
445
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000446- Issue #3394: zipfile.writestr sets external attributes when passed a
447 file name rather than a ZipInfo instance, so files are extracted with
448 mode 0600 rather than 000 under Unix.
449
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000450- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
451 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000452
Martin v. Löwis371bb502008-08-16 13:02:57 +0000453Extension Modules
454-----------------
455
456- Bug #3542: Support Unicode strings in _msi module.
457
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000458What's new in Python 3.0b2?
459===========================
460
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000461*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000462
463Core and Builtins
464-----------------
465
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000466- Issue #3008: the float type has a new instance method 'float.hex'
467 and a new class method 'float.fromhex' to convert floating-point
468 numbers to and from hexadecimal strings, respectively.
469
Eric Smithd68af8f2008-07-16 00:15:35 +0000470- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
471 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
472
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000473- Issue #3280: like chr(), the "%c" format now accepts unicode code points
474 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
475 "narrow Unicode" builds, the result is a string of 2 code units, forming a
476 UTF-16 surrogate pair.
477
Georg Brandld52429f2008-07-04 15:55:02 +0000478- Issue #3282: str.isprintable() should return False for undefined
479 Unicode characters.
480
Martin v. Löwis029656f2008-06-30 04:06:08 +0000481- Issue #3236: Return small longs from PyLong_FromString.
482
Benjamin Petersone6528212008-07-15 15:32:09 +0000483- Exception tracebacks now support exception chaining.
484
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000485Library
486-------
487
Brett Cannonc2542e92008-07-25 18:19:20 +0000488- Removed the sunaudio module. Use sunau instead.
489
Thomas Heller47bc8092008-08-19 06:38:12 +0000490- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
491 api functions without holding the GIL, which could lead to a fatal
492 error when they failed.
493
494- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
495
Georg Brandl30704ea02008-07-23 15:07:12 +0000496- Removed "ast" function aliases from the parser module.
497
Thomas Heller15383a02008-07-15 19:46:52 +0000498- Issue #3313: Fixed a crash when a failed dlopen() call does not set
499 a valid dlerror() message.
500
Thomas Heller0261e1e2008-07-15 17:25:07 +0000501- Issue #3258: Fixed a crash when a ctypes POINTER type to an
502 incomplete structure was created.
503
Georg Brandl1abcbf82008-07-01 19:28:43 +0000504- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
505 argument now must be a bytes object in any case.
506
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000507- Issue #3145: help("modules whatever") failed when trying to load the source
508 code of every single module of the standard library, including invalid files
509 used in the test suite.
510
Georg Brandlbded4d32008-07-17 18:15:35 +0000511- The gettext library now consistently uses Unicode strings for message ids
512 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000513
Benjamin Petersone6528212008-07-15 15:32:09 +0000514- The traceback module has been expanded to handle chained exceptions.
515
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000516C API
517-----
518
519- Issue #3247: the function Py_FindMethod was removed. Modern types should
520 use the tp_methods slot instead.
521
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000522Tools/Demos
523-----------
524
Georg Brandl336341f2008-07-01 20:21:28 +0000525- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000526
Georg Brandl336341f2008-07-01 20:21:28 +0000527- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000528
529
Brett Cannon0d71ee72008-05-08 18:13:40 +0000530What's new in Python 3.0b1?
531===========================
532
Barry Warsawc1e689e2008-06-19 00:35:43 +0000533*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000534
535Core and Builtins
536-----------------
537
Brett Cannondb734912008-06-27 00:52:15 +0000538- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
539 argument being anything other than a dict or None. Also fixed a bug in error
540 handling when 'message' and 'category' were both set to None, triggering a
541 bus error.
542
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000543- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
544 holds the last (strong) reference to its referent.
545
Georg Brandl559e5d72008-06-11 18:37:52 +0000546- Issue #2630: implement PEP 3138. repr() now returns printable
547 Unicode characters unescaped, to get an ASCII-only representation
548 of an object use ascii().
549
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000550- Issue #1342: On windows, Python could not start when installed in a
551 directory with non-ascii characters.
552
Martin v. Löwis1a214512008-06-11 05:26:20 +0000553- Implement PEP 3121: new module initialization and finalization API.
554
Georg Brandle1b5ac62008-06-04 13:06:58 +0000555- Removed the already-defunct ``-t`` option.
556
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000557- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
558 unmarshalling many code objects, which happens when importing a
559 large .pyc file (~1000 functions).
560
Georg Brandl52b92cc2008-05-25 09:43:03 +0000561- Issue #2963: fix merging oversight that disabled method cache for
562 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000563
Georg Brandlc9b09532008-05-25 09:24:38 +0000564- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
565
Georg Brandl52b92cc2008-05-25 09:43:03 +0000566- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000567
Georg Brandl52b92cc2008-05-25 09:43:03 +0000568- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
569 code now allows any unicode string and returns a utf-8 encoded
570 buffer, just like the "s#" code already does. The "z" code was
571 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000572
Georg Brandl52b92cc2008-05-25 09:43:03 +0000573- Issue #2863: generators now have a ``gen.__name__`` attribute that
574 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
575 ``func.func_code.co_name``. The repr() of a generator now also
576 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000577
578- Issue #2831: enumerate() now has a ``start`` argument.
579
Georg Brandl52b92cc2008-05-25 09:43:03 +0000580- Issue #2801: fix bug in the float.is_integer method where a
581 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000582
Georg Brandl52b92cc2008-05-25 09:43:03 +0000583- The ``--with-toolbox-glue`` option (and the associated
584 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000585
Georg Brandl52b92cc2008-05-25 09:43:03 +0000586- Issue #2196: hasattr() now lets exceptions which do not inherit
587 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
588 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000589
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000590- #3021 Exception reraising sematics have been significantly improved. However,
591 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
592 code anymore.
593
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000594- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
595 removed.
596
Brett Cannon0d71ee72008-05-08 18:13:40 +0000597Extension Modules
598-----------------
599
Georg Brandl38feaf02008-05-25 07:45:51 +0000600- Renamed ``_winreg`` module to ``winreg``.
601
Georg Brandl52b92cc2008-05-25 09:43:03 +0000602- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
603 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000604
605- Support for Windows 9x has been removed from the winsound module.
606
Georg Brandl52b92cc2008-05-25 09:43:03 +0000607- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000608
Brett Cannon0d71ee72008-05-08 18:13:40 +0000609Library
610-------
611
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000612- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
613 symtable.Symbol have been removed.
614
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000615- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
616
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000617- a new ``urllib`` package was created. It consists of code from
618 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
619 modules have all been removed. The new package has five submodules:
620 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
621 ``urllib.error``, and ``urllib.robotparser``. The
622 ``urllib.request.urlopen()`` function uses the url opener from
623 ``urllib2``. (Note that the unittests have not been renamed for the
624 beta, but they will be renamed in the future.)
625
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000626- rfc822 has been removed in favor of the email package.
627
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000628- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000629
Barry Warsawf5019422008-06-12 02:42:00 +0000630- Patch #2849: Remove use of rfc822 module from standard library.
631
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000632- Added C optimized implementation of io.StringIO.
633
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000634- The ``pickle`` module is now automatically use an optimized C
635 implementation of Pickler and Unpickler when available. The
636 ``cPickle`` module is no longer needed.
637
Georg Brandl877b10a2008-06-01 21:25:55 +0000638- Removed the ``htmllib`` and ``sgmllib`` modules.
639
Georg Brandl61013952008-05-28 15:56:30 +0000640- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
641 been removed from ``http.cookies``.
642
Brett Cannona23810f2008-05-26 19:04:21 +0000643- The ``commands`` module has been removed. Its getoutput() and
644 getstatusoutput() functions have been moved to the ``subprocess`` module.
645
Georg Brandl3d5c4252008-05-26 18:03:26 +0000646- The ``http`` package was created; it contains the old ``httplib``
647 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
648 as ``http.cookiejar``, and the content of the three ``HTTPServer``
649 modules as ``http.server``.
650
Georg Brandl38eceaa2008-05-26 11:14:17 +0000651- The ``xmlrpc`` package was created; it contains the old
652 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
653 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000654 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000655
656- The ``dbm`` package was created, containing the old modules
657 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
658 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
659 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
660 as submodules.
661
Georg Brandl52b92cc2008-05-25 09:43:03 +0000662- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000663
Georg Brandl52b92cc2008-05-25 09:43:03 +0000664- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000665
Georg Brandl52b92cc2008-05-25 09:43:03 +0000666- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000667
Georg Brandl52b92cc2008-05-25 09:43:03 +0000668- Issue #2250: Exceptions raised during evaluation of names in
669 rlcompleter's ``Completer.complete()`` method are now caught and
670 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000671
Georg Brandl52b92cc2008-05-25 09:43:03 +0000672- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
673 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000674
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000675- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
676 large to fit in a C long. ldexp(x, n) now returns a zero (with
677 suitable sign) if n is large and negative; previously, it raised
678 OverflowError.
679
Georg Brandl52b92cc2008-05-25 09:43:03 +0000680- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000681
Georg Brandl52b92cc2008-05-25 09:43:03 +0000682- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000683
Georg Brandl52b92cc2008-05-25 09:43:03 +0000684- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000685
Georg Brandl52b92cc2008-05-25 09:43:03 +0000686- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000687
Georg Brandl52b92cc2008-05-25 09:43:03 +0000688- Fixed the ``__all__`` setting on ``collections`` to include
689 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000690
Brett Cannoncf3520c2008-05-11 22:47:58 +0000691- The sre module has been removed.
692
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000693- The Queue module has been renamed to queue.
694
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000695- The copy_reg module has been renamed to copyreg.
696
Brett Cannond8b61ee2008-05-11 03:00:26 +0000697- The mhlib module has been removed.
698
Brett Cannonbd474422008-05-10 22:42:14 +0000699- The ihooks module has been removed.
700
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000701- The fpformat module has been removed.
702
Brett Cannonf4fd9932008-05-10 21:11:46 +0000703- The dircache module has been removed.
704
Brett Cannond175b4c2008-05-10 03:19:54 +0000705- The Canvas module has been removed.
706
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000707- The Decimal module gained the magic methods __round__, __ceil__,
708 __floor__ and __trunc__, to give support for round, math.ceil,
709 math.floor and math.trunc.
710
Brett Cannon900ee3a2008-05-08 20:31:11 +0000711- The user module has been removed.
712
Brett Cannon34afe872008-05-08 20:31:44 +0000713- The mutex module has been removed.
714
Brett Cannon0d71ee72008-05-08 18:13:40 +0000715- The imputil module has been removed.
716
Georg Brandl52b92cc2008-05-25 09:43:03 +0000717- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000718
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000719- pdb gained the "until" command.
720
Georg Brandl52b92cc2008-05-25 09:43:03 +0000721- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000722
Georg Brandl32de7af2008-08-18 23:07:41 +0000723- The threading module API was renamed to be PEP 8 compliant. The
724 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000725
Georg Brandl294d5a92008-06-01 19:25:32 +0000726Tools/Demos
727-----------
728
729- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000730
Brett Cannon0d71ee72008-05-08 18:13:40 +0000731Build
732-----
733
734
Barry Warsaw66079cd2008-04-04 01:36:36 +0000735What's New in Python 3.0a5?
736===========================
737
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000738*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000739
740Core and Builtins
741-----------------
742
Georg Brandl52b92cc2008-05-25 09:43:03 +0000743- Fixed misbehaviour of PyLong_FromSsize_t on systems where
744 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000745
Georg Brandl52b92cc2008-05-25 09:43:03 +0000746- Issue #2221: Corrected a SystemError "error return without exception
747 set", when the code executed by exec() raises an exception, and
748 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000749
Georg Brandl52b92cc2008-05-25 09:43:03 +0000750- Bug #2565: The repr() of type objects now calls them 'class', not
751 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000752
Martin v. Löwis790465f2008-04-05 20:41:37 +0000753- The command line processing was converted to pass Unicode strings
754 through as unmodified as possible; as a consequence, the C API
755 related to command line arguments was changed to use wchar_t.
756
Georg Brandl52b92cc2008-05-25 09:43:03 +0000757- All backslashes in raw strings are interpreted literally. This
758 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000759
Barry Warsaw66079cd2008-04-04 01:36:36 +0000760Extension Modules
761-----------------
762
763Library
764-------
765
Georg Brandl52b92cc2008-05-25 09:43:03 +0000766- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000767
Thomas Hellere106dc32008-04-24 18:39:36 +0000768- Issue #2682: ctypes callback functions now longer contain a cyclic
769 reference to themselves.
770
Georg Brandl52b92cc2008-05-25 09:43:03 +0000771- Issue #2058: Remove the buf attribute and add __slots__ to the
772 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000773
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000774- Bug #2606: Avoid calling .sort() on a dict_keys object.
775
Thomas Hellerbff533b2008-04-04 19:53:14 +0000776- The bundled libffi copy is now in sync with the recently released
777 libffi3.0.5 version, apart from some small changes to
778 Modules/_ctypes/libffi/configure.ac.
779
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000780Build
781-----
782
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000783- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
784
Guido van Rossumdc21db32008-04-07 18:37:41 +0000785- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000786 accidentally overwriting a Python 2.x installation. Use "make
787 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000788
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000789- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
790 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000791
Georg Brandl52b92cc2008-05-25 09:43:03 +0000792
Barry Warsawa9d499d2008-03-01 18:38:07 +0000793What's New in Python 3.0a4?
794===========================
795
Barry Warsawbb5cd082008-04-02 23:33:27 +0000796*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000797
Martin v. Löwis25931462008-03-17 20:43:42 +0000798Core and Builtins
799-----------------
800
801- Bug #2301: Don't try decoding the source code into the original
802 encoding for syntax errors.
803
Martin v. Löwis92fab752008-03-08 10:40:41 +0000804Extension Modules
805-----------------
806
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000807- The dl module was removed, use the ctypes module instead.
808
Martin v. Löwis92fab752008-03-08 10:40:41 +0000809- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000810
Martin v. Löwis071ef772008-03-08 11:24:24 +0000811Library
812-------
813
Georg Brandl52b92cc2008-05-25 09:43:03 +0000814- The class distutils.commands.build_py.build_py_2to3 can be used as a
815 build_py replacement to automatically run 2to3 on modules that are
816 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000817
Guido van Rossumf4169812008-03-17 22:56:06 +0000818- A new pickle protocol (protocol 3) is added with explicit support
819 for bytes. This is the default protocol. It intentionally cannot
820 be unpickled by Python 2.x.
821
822- When a pickle written by Python 2.x contains an (8-bit) str
823 instance, this is now decoded to a (Unicode) str instance. The
824 encoding used to do this defaults to ASCII, but can be overridden
825 via two new keyword arguments to the Unpickler class. Previously
826 this would create bytes instances, which is usually wrong: str
827 instances are often used to pickle attribute names etc., and text is
828 more common than binary data anyway.
829
Martin v. Löwis071ef772008-03-08 11:24:24 +0000830- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000831 system doesn't support CODESET and LANG isn't set or doesn't allow
832 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000833
Georg Brandl52b92cc2008-05-25 09:43:03 +0000834- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
835 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000836
Georg Brandl52b92cc2008-05-25 09:43:03 +0000837- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
838 has been renamed tokenize and now works with bytes rather than
839 strings. A new detect_encoding function has been added for
840 determining source file encoding according to PEP-0263. Token
841 sequences returned by tokenize always start with an ENCODING token
842 which specifies the encoding used to decode the file. This token is
843 used to encode the output of untokenize back to bytes.
844
Barry Warsawa9d499d2008-03-01 18:38:07 +0000845
Christian Heimesbc873412007-12-08 22:11:32 +0000846What's New in Python 3.0a3?
847===========================
848
Barry Warsaw659fc422008-03-01 17:45:23 +0000849*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000850
851Core and Builtins
852-----------------
853
Georg Brandl52b92cc2008-05-25 09:43:03 +0000854- Issue #2282: io.TextIOWrapper was not overriding seekable() from
855 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000856
Georg Brandl52b92cc2008-05-25 09:43:03 +0000857- Issue #2115: Important speedup in setting __slot__ attributes. Also
858 prevent a possible crash: an Abstract Base Class would try to access
859 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000860
Georg Brandl52b92cc2008-05-25 09:43:03 +0000861- Fixed repr() and str() of complex numbers with infinity or nan as
862 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000863
Georg Brandl52b92cc2008-05-25 09:43:03 +0000864- Clear all free list during a gc.collect() of the highest generation
865 in order to allow pymalloc to free more arenas. Python may give back
866 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000867
Georg Brandl52b92cc2008-05-25 09:43:03 +0000868- Issue #2045: Fix an infinite recursion triggered when printing a
869 subclass of collections.defaultdict, if its default_factory is set
870 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000871
872- Fixed a minor memory leak in dictobject.c. The content of the free
873 list was not freed on interpreter shutdown.
874
Georg Brandl52b92cc2008-05-25 09:43:03 +0000875- Limit free list of method and builtin function objects to 256
876 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000877
Georg Brandl52b92cc2008-05-25 09:43:03 +0000878- Patch #1953: Added ``sys._compact_freelists()`` and the C API
879 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000880 to compact the internal free lists of pre-allocted ints and floats.
881
882- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000883 Python expected the return type int but the fork familie returns
884 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000885
Georg Brandl52b92cc2008-05-25 09:43:03 +0000886- Issue #1678380: Fix a bug that identifies 0j and -0j when they
887 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000888
Georg Brandl52b92cc2008-05-25 09:43:03 +0000889- Issue #2025: Added tuple.count() and tuple.index() methods to comply
890 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000891
Georg Brandl52b92cc2008-05-25 09:43:03 +0000892- Fixed multiple reinitialization of the Python interpreter. The small
893 int list in longobject.c has caused a seg fault during the third
894 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000895
Georg Brandl52b92cc2008-05-25 09:43:03 +0000896- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000897
Georg Brandl52b92cc2008-05-25 09:43:03 +0000898- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000899
Georg Brandl52b92cc2008-05-25 09:43:03 +0000900- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000901
Georg Brandl52b92cc2008-05-25 09:43:03 +0000902- map() no longer accepts None for the first argument. Use zip()
903 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000904
Facundo Batista2336bdd2008-01-19 19:12:01 +0000905- Issue #1769: Now int("- 1") is not allowed any more.
906
Georg Brandl52b92cc2008-05-25 09:43:03 +0000907- Object/longobject.c: long(float('nan')) raises an OverflowError
908 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000909
Georg Brandl52b92cc2008-05-25 09:43:03 +0000910- Issue #1762972: __file__ points to the source file instead of the
911 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000912
Guido van Rossumab078dd2008-01-06 00:09:11 +0000913- Issue #1393: object_richcompare() returns NotImplemented instead of
914 False if the objects aren't equal, to give the other side a chance.
915
Guido van Rossume239b002008-01-06 00:44:20 +0000916- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000917
Georg Brandl52b92cc2008-05-25 09:43:03 +0000918- Improve some exception messages when Windows fails to load an
919 extension module. Now we get for example '%1 is not a valid Win32
920 application' instead of 'error code 193'. Also use Unicode strings
921 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000922
Georg Brandl52b92cc2008-05-25 09:43:03 +0000923- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
924 Python C API has gained a new type *PyInstanceMethod_Type* and the
925 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
926 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000927
Georg Brandl52b92cc2008-05-25 09:43:03 +0000928- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
929 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
930 are now enough to print the corresponding list of objects considered
931 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000932
Georg Brandl52b92cc2008-05-25 09:43:03 +0000933- Issue #1573: Improper use of the keyword-only syntax makes the
934 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000935
Georg Brandl52b92cc2008-05-25 09:43:03 +0000936- Issue #1564: The set implementation should special-case PyUnicode
937 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000938
Guido van Rossumea6775b2008-02-21 20:16:31 +0000939- Patch #1031213: Decode source line in SyntaxErrors back to its
940 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000941
Christian Heimes09aaa882008-02-23 15:01:06 +0000942- inspect.getsource() includes the decorators again.
943
Guido van Rossumea6775b2008-02-21 20:16:31 +0000944- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
945 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000946
Georg Brandl52b92cc2008-05-25 09:43:03 +0000947- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
948 the first chunk fed to the decoder started with a BOM, but was
949 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000950
Christian Heimesbc873412007-12-08 22:11:32 +0000951Extension Modules
952-----------------
953
Georg Brandl52b92cc2008-05-25 09:43:03 +0000954- Code for itertools ifilter(), imap(), and izip() moved to bultins
955 and renamed to filter(), map(), and zip(). Also, renamed
956 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +0000957
Georg Brandl52b92cc2008-05-25 09:43:03 +0000958- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +0000959
Georg Brandl52b92cc2008-05-25 09:43:03 +0000960- Bug #2111: mmap segfaults when trying to write a block opened with
961 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +0000962
Georg Brandl52b92cc2008-05-25 09:43:03 +0000963- Issue #2063: correct order of utime and stime in os.times() result
964 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +0000965
Christian Heimesbc873412007-12-08 22:11:32 +0000966Library
967-------
968
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000969- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000970
Georg Brandl52b92cc2008-05-25 09:43:03 +0000971- Created new UserDict class in collections module. This one inherits
972 from and complies with the MutableMapping ABC. Also, moved
973 UserString and UserList to the collections module. The
974 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000975
Guido van Rossumea6775b2008-02-21 20:16:31 +0000976- Removed UserDict.DictMixin. Replaced all its uses with
977 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +0000978
Guido van Rossume239b002008-01-06 00:44:20 +0000979- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +0000980
Guido van Rossume239b002008-01-06 00:44:20 +0000981- Issue #1585: IDLE uses non-existent xrange() function.
982
983- Issue #1578: Problems in win_getpass.
984
Georg Brandl52d168a2008-01-07 18:10:24 +0000985Build
986-----
987
Georg Brandl52b92cc2008-05-25 09:43:03 +0000988- Renamed --enable-unicode configure flag to --with-wide-unicode,
989 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +0000990
Guido van Rossume239b002008-01-06 00:44:20 +0000991C API
992-----
993
994- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
995 Py_TYPE and Py_REFCNT.
996
Georg Brandl52b92cc2008-05-25 09:43:03 +0000997- New API PyImport_ImportModuleNoBlock(), works like
998 PyImport_ImportModule() but won't block on the import lock
999 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001000
Christian Heimesbc873412007-12-08 22:11:32 +00001001
Fred Drake0e474a82007-10-11 18:01:43 +00001002What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001003===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001004
Guido van Rossum99533a92007-12-06 05:07:41 +00001005*Release date: 07-Dec-2007*
1006
1007(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001008
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001009Core and Builtins
1010-----------------
1011
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001012- str8 now has the same construction signature as bytes.
1013
Georg Brandl52b92cc2008-05-25 09:43:03 +00001014- Comparisons between str and str8 now return False/True for ==/!=.
1015 sqlite3 returns str8 when recreating on object from it's __conform__
1016 value. The struct module returns str8 for all string-related
1017 formats. This was true before this change, but becomes more
1018 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001019
Georg Brandl52b92cc2008-05-25 09:43:03 +00001020- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1021 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001022
1023- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1024
1025- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001026 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001027 `PyUnicode_DecodeFSDefault(char*)` was added.
1028
Georg Brandl52b92cc2008-05-25 09:43:03 +00001029- io.open() and _fileio.FileIO have grown a new argument closefd. A
1030 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001031
Georg Brandl52b92cc2008-05-25 09:43:03 +00001032- Added a new option -b to issues warnings (-bb for errors) about
1033 certain operations between bytes/buffer and str like str(b'') and
1034 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001035
Georg Brandl52b92cc2008-05-25 09:43:03 +00001036- The standards streams sys.stdin, stdout and stderr may be None when
1037 the when the C runtime library returns an invalid file descriptor
1038 for the streams (fileno(stdin) < 0). For now this happens only for
1039 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001040
Christian Heimesbce52be2007-11-17 19:08:41 +00001041- Added PCbuild9 directory for VS 2008.
1042
Georg Brandl52b92cc2008-05-25 09:43:03 +00001043- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1044 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001045
Georg Brandl52b92cc2008-05-25 09:43:03 +00001046- Unbound methods are gone for good. ClassObject.method returns an
1047 ordinary function object, instance.method still returns a bound
1048 method object. The API of bound methods is cleaned up, too. The
1049 im_class attribute is removed and im_func + im_self are renamed to
1050 __func__ and __self__. The factory PyMethod_New takes only func and
1051 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001052
Georg Brandl52b92cc2008-05-25 09:43:03 +00001053- intobject.h is no longer included by Python.h. The remains were
1054 moved to longobject.h. It still exists to define several aliases
1055 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001056
Christian Heimesa37d4c62007-12-04 23:02:19 +00001057- Removed sys.maxint, use sys.maxsize instead.
1058
Fred Drake0e474a82007-10-11 18:01:43 +00001059Extension Modules
1060-----------------
1061
1062- The `hotshot` profiler has been removed; use `cProfile` instead.
1063
Brett Cannone9fd2312007-10-12 19:18:19 +00001064Library
1065-------
1066
Georg Brandl52b92cc2008-05-25 09:43:03 +00001067- When loading an external file using testfile(), the passed-in
1068 encoding argument was being ignored if __loader__ is defined and
1069 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001070
Georg Brandl52b92cc2008-05-25 09:43:03 +00001071- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1072 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001073
Christian Heimesc9543e42007-11-28 08:28:28 +00001074- Removed the 'new' module.
1075
Georg Brandl52b92cc2008-05-25 09:43:03 +00001076- Removed all types from the 'types' module that are easily accessable
1077 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001078
Georg Brandl52d168a2008-01-07 18:10:24 +00001079
Guido van Rossum4405cf32007-08-30 17:16:55 +00001080What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001081==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001082
Guido van Rossum4405cf32007-08-30 17:16:55 +00001083*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001084
1085Core and Builtins
1086-----------------
1087
Martin v. Löwis47383402007-08-15 07:32:56 +00001088- PEP 3131: Support non-ASCII identifiers.
1089
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001090- PEP 3120: Change default encoding to UTF-8.
1091
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001092- PEP 3123: Use proper C inheritance for PyObject.
1093
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001094- Removed the __oct__ and __hex__ special methods and added a bin()
1095 builtin function.
1096
Georg Brandl52b92cc2008-05-25 09:43:03 +00001097- PEP 3127: octal literals now start with "0o". Old-style octal
1098 literals are invalid. There are binary literals with a prefix of
1099 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001100
Guido van Rossume7ba4952007-06-06 23:52:48 +00001101- None, True, False are now keywords.
1102
Guido van Rossum29478ef2007-05-29 00:39:44 +00001103- PEP 3119: isinstance() and issubclass() can be overridden.
1104
Guido van Rossumebe3e162007-05-17 18:20:34 +00001105- Remove BaseException.message.
1106
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001107- Remove tuple parameter unpacking (PEP 3113).
1108
Georg Brandl52b92cc2008-05-25 09:43:03 +00001109- Remove the f_restricted attribute from frames. This naturally leads
1110 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001111
Georg Brandl52b92cc2008-05-25 09:43:03 +00001112- PEP 3132 was accepted. That means that you can do ``a, *b =
1113 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001114
Georg Brandl52b92cc2008-05-25 09:43:03 +00001115- range() now returns an iterator rather than a list. Floats are not
1116 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001117
Nick Coghlan650f0d02007-04-15 12:05:43 +00001118- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001119 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001120
Guido van Rossume27dc722007-03-27 22:37:34 +00001121- By default, != returns the opposite of ==, unless the latter returns
1122 NotImplemented.
1123
Georg Brandl52b92cc2008-05-25 09:43:03 +00001124- Patch #1680961: sys.exitfunc has been removed and replaced with a
1125 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001126
Georg Brandl801dd732007-03-18 20:18:31 +00001127- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001128 keyword arg in the class statement, which can now use the full
1129 syntax of a parameter list. Also, the metaclass can implement a
1130 __prepare__ function which will be called to create the dictionary
1131 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001132
Georg Brandl428f0642007-03-18 18:35:15 +00001133- The long-deprecated argument "pend" of PyFloat_FromString() has been
1134 removed.
1135
Georg Brandle32b4222007-03-10 22:13:27 +00001136- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001137 its argument, if it exists. If not, it will work like before. This
1138 allows customizing the output of dir() in the presence of a
1139 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001140
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001141- Removed support for __members__ and __methods__.
1142
Georg Brandle32b4222007-03-10 22:13:27 +00001143- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001144
Georg Brandle32b4222007-03-10 22:13:27 +00001145- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001146 functionality formerly known as raw_input(); the name raw_input() is
1147 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001148
Georg Brandl52b92cc2008-05-25 09:43:03 +00001149- Classes listed in an 'except' clause must inherit from
1150 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001151
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001152- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001153 and .keys(), .items(), .values() return dict views, which behave
1154 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001155
Guido van Rossum8b545362007-02-09 23:52:14 +00001156- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001157 'softspace' attribute of files is now gone (since print() doesn't
1158 use it). A side effect of this change is that you can get
1159 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001160
1161 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001162 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001163
1164 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001165
Brett Cannon398db8b2007-01-29 23:44:37 +00001166- PEP 3102: keyword-only arguments.
1167
Georg Brandl52b92cc2008-05-25 09:43:03 +00001168- Int/Long unification is complete. The 'long' built-in type and
1169 literals with trailing 'L' or 'l' have been removed. Performance
1170 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001171
1172- 'except E, V' must now be spelled as 'except E as V' and deletes V
1173 at the end of the except clause; V must be a simple name.
1174
Neal Norwitzc1505362006-12-28 06:47:50 +00001175- Added function annotations per PEP 3107.
1176
Georg Brandl52b92cc2008-05-25 09:43:03 +00001177- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001178
1179 >>> def f(x):
1180 ... def inc():
1181 ... nonlocal x
1182 ... x += 1
1183 ... return x
1184 ... return inc
1185 ...
1186 >>> inc = f(0)
1187 >>> inc()
1188 1
1189 >>> inc()
1190 2
1191
Georg Brandl66a796e2006-12-19 20:50:34 +00001192- Moved intern() to sys.intern().
1193
1194- exec is now a function.
1195
1196- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001197
Neal Norwitz4886cc32006-08-21 17:06:07 +00001198- Classic classes are a thing of the past. All classes are new style.
1199
1200- Exceptions *must* derive from BaseException.
1201
1202- Integer division always returns a float. The -Q option is no more.
1203 All the following are gone:
1204 * PyNumber_Divide and PyNumber_InPlaceDivide
1205 * __div__, __rdiv__, and __idiv__
1206 * nb_divide, nb_inplace_divide
1207 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1208 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1209 if we want to re-use __div__ and friends. If we do, it will make
1210 it harder to write code for both 2.x and 3.x.)
1211
1212- 'as' and 'with' are keywords.
1213
1214- Absolute import is the default behavior for 'import foo' etc.
1215
Georg Brandl52b92cc2008-05-25 09:43:03 +00001216- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001217
Georg Brandl52b92cc2008-05-25 09:43:03 +00001218- Removed these Python builtins: apply(), callable(), coerce(),
1219 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001220
Georg Brandl52b92cc2008-05-25 09:43:03 +00001221- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001222
Georg Brandl52b92cc2008-05-25 09:43:03 +00001223- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001224
1225- Remove C API support for restricted execution.
1226
Guido van Rossumcf1be882007-08-30 22:07:17 +00001227- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001228 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001229 sequences of unequal length -- it now stops after the shortest one
1230 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001231
Georg Brandl52b92cc2008-05-25 09:43:03 +00001232- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001233
1234- Added class decorators per PEP 3129.
1235
1236
1237Extension Modules
1238-----------------
1239
Georg Brandl52b92cc2008-05-25 09:43:03 +00001240- Removed the imageop module. Obsolete long with its unit tests
1241 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001242
Georg Brandl52b92cc2008-05-25 09:43:03 +00001243- Removed these attributes from the operator module: div, idiv,
1244 __div__, __idiv__, isCallable, sequenceIncludes.
1245
1246- Removed these attributes from the sys module: exc_clear(), exc_type,
1247 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001248
1249
1250Library
1251-------
1252
Georg Brandl52b92cc2008-05-25 09:43:03 +00001253- Removed the compiler package. Use of the _ast module and (an
1254 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001255
Georg Brandl52b92cc2008-05-25 09:43:03 +00001256- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1257 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1258 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001259
Georg Brandl52b92cc2008-05-25 09:43:03 +00001260- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001261
Georg Brandl52b92cc2008-05-25 09:43:03 +00001262- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1263 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1264 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001265
Georg Brandl52b92cc2008-05-25 09:43:03 +00001266- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001267
Georg Brandl52b92cc2008-05-25 09:43:03 +00001268- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001269 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001270
Georg Brandl52b92cc2008-05-25 09:43:03 +00001271- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001272
Georg Brandl52b92cc2008-05-25 09:43:03 +00001273- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001274
1275- Patch #1680961: atexit has been reimplemented in C.
1276
Walter Dörwald41980ca2007-08-16 21:55:45 +00001277- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1278
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001279Build
1280-----
1281
1282C API
1283-----
1284
Georg Brandl52b92cc2008-05-25 09:43:03 +00001285- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001286
Georg Brandl52b92cc2008-05-25 09:43:03 +00001287- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1288 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001289
Georg Brandl52b92cc2008-05-25 09:43:03 +00001290- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001291
Georg Brandl52b92cc2008-05-25 09:43:03 +00001292- Removed these macros: staticforward, statichere, PyArg_GetInt,
1293 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001294
Georg Brandl52b92cc2008-05-25 09:43:03 +00001295- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1296 intintobjargproc, getreadbufferproc, getwritebufferproc,
1297 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001298
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001299Tests
1300-----
1301
Brett Cannone7a30f72008-03-03 03:36:27 +00001302- Removed test.testall as test.regrtest replaces it.
1303
Brett Cannonced04e02005-02-13 22:53:22 +00001304Documentation
1305-------------
1306
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001307Mac
1308---
1309
Georg Brandl52b92cc2008-05-25 09:43:03 +00001310- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001311
Guido van Rossum845702c2007-08-30 18:44:53 +00001312Platforms
1313---------
1314
1315- Support for BeOS and AtheOS was removed (according to PEP 11).
1316
1317- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1318
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001319Tools/Demos
1320-----------
1321
Georg Brandl52b92cc2008-05-25 09:43:03 +00001322
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001323**(For information about older versions, consult the HISTORY file.)**