blob: fe5d84ca4acebe0df779dde25f86799a363556d2 [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
Barry Warsawd8ccd1c2008-11-21 15:13:37 +00007What's New in Python 3.0 final
8==============================
9
10*Release date: XX-XXX-2008*
11
12Core and Builtins
13-----------------
14
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000015- Issue #3996: On Windows, the PyOS_CheckStack function would cause the
16 interpreter to abort ("Fatal Python error: Could not reset the stack!")
17 instead of throwing a MemoryError.
18
19- Issue #4367: Python would segfault during compiling when the unicodedata
20 module couldn't be imported and \N escapes were present.
21
Matthias Klose7e1b8fa2008-11-26 17:22:04 +000022- Fix build failure of _cursesmodule.c building with -D_FORTIFY_SOURCE=2.
23
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000024Library
25-------
26
Christian Heimes94e07722008-11-28 11:05:17 +000027- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
28 exception.
29
Thomas Heller60e5f5e2008-11-26 18:40:58 +000030- Issue #4433: Fixed an access violation when garbage collecting
31 _ctypes.COMError instances.
32
Thomas Heller71fb5132008-11-26 08:45:36 +000033- Issue #4429: Fixed UnicodeDecodeError in ctypes.
34
Christian Heimes3e7e0692008-11-25 21:21:32 +000035- Issue #4373: Corrected a potential reference leak in the pickle module and
36 silenced a false positive ref leak in distutils.tests.test_build_ext.
Amaury Forgeot d'Arc5f952572008-11-25 21:11:54 +000037
Brett Cannon2b5d6eb2008-11-24 21:09:58 +000038- Issue #4382: dbm.dumb did not specify the expected file encoding for opened
39 files.
40
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000041- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
42 fail to properly display the error message.
43
Brett Cannon7317c1e2008-11-25 19:19:17 +000044Docs
45----
46
Christian Heimes7ca7cb42008-11-28 11:24:16 +000047- Issue #4449: Fixed multiprocessing examples
48
Brett Cannon7317c1e2008-11-25 19:19:17 +000049- Issue #3799: Document that dbm.gnu and dbm.ndbm will accept string arguments
50 for keys and values which will be converted to bytes before committal.
51
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000052
53What's New in Python 3.0 release candidate 3?
54=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000055
Barry Warsaw43baef42008-11-21 01:18:21 +000056*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000057
Benjamin Peterson6570d072008-11-07 03:51:42 +000058
Barry Warsawa7c37302008-11-07 03:46:33 +000059Core and Builtins
60-----------------
61
Benjamin Peterson4f39d222008-11-18 22:37:15 +000062- Issue #4349: sys.path included a non-existent platform directory because of a
63 faulty Makefile.
64
Martin v. Löwis276c3712008-11-17 16:22:11 +000065- Issue #3327: Don't overallocate in the modules_by_index list.
66
Raymond Hettinger7d99f092008-11-16 11:44:54 +000067- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000068 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000069 subclasses would be created without their __init__() method being called.
70 The corrected behavior brings sets into line with lists and dicts.
71
Mark Dickinson4a1f5932008-11-12 23:23:36 +000072- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
73 True, even when x doesn't compare equal to itself. This was a regression
74 from 2.6.
75
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000076- Issue #3705: Command-line arguments were not correctly decoded when the
77 terminal does not use UTF8.
78
Barry Warsawa7c37302008-11-07 03:46:33 +000079Library
80-------
81
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000082- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
83 the ctypes module is not present.
84
Benjamin Peterson44309e62008-11-22 00:41:45 +000085- FileIO's mode attribute now always includes ``"b"``.
86
Brett Cannon58425d32008-11-21 00:17:53 +000087- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
88 keys are now written out in UTF-8.
89
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000090- Issue #4338: Fix distutils upload command.
91
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000092- Issue #4354: Fix distutils register command.
93
Martin v. Löwis22d297b2008-11-19 09:14:30 +000094- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
95
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000096- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
97 uses ``kwonlydefaults`` instead of ``kwdefaults``.
98
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000099- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
100
101- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +0000102
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000103Build
104-----
105
Martin v. Löwisa632a752008-11-19 13:55:07 +0000106- Issue #4289: Remove Cancel button from AdvancedDlg.
107
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000108- Issue #1656675: Register a drop handler for .py* files on Windows.
109
Benjamin Peterson06fd5f82008-11-08 17:24:34 +0000110Tools/Demos
111-----------
112
113- Demos of the socketserver module now work with Python 3.
114
Barry Warsawa7c37302008-11-07 03:46:33 +0000115
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000116What's New in Python 3.0 release candidate 2
117============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000118
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000119*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000120
121Core and Builtins
122-----------------
123
Benjamin Petersond968e272008-11-05 22:48:33 +0000124- Issue #4211: The __path__ attribute of frozen packages is now a list instead
125 of a string as required by PEP 302.
126
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000127- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000128
Christian Heimes933238a2008-11-05 19:44:21 +0000129- Issue #3714: Fixed nntplib by using bytes where appropriate.
130
Christian Heimesfb5faf02008-11-05 19:39:50 +0000131- Issue #1210: Fixed imaplib and its documentation.
132
Christian Heimesecc42a22008-11-05 19:30:32 +0000133- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
134 method on file objects with closefd=False. The file descriptor is still
135 kept open but the file object behaves like a closed file. The ``FileIO``
136 object also got a new readonly attribute ``closefd``.
137
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000138- Issue #3626: On cygwin, starting python with a non-existent script name
139 would not display anything if the file name is only 1 character long.
140
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000141- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
142 method does not return iterators for the 4th and 5th items.
143
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000144- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000145
Christian Heimes5833a2f2008-10-30 21:40:04 +0000146- Issue #4213: The file system encoding is now normalized by the
147 codec subsystem, for example UTF-8 is turned into utf-8.
148
Christian Heimes9c94ba42008-10-30 21:34:02 +0000149- Issue #4200: Changed the atexit module to store its state in its
150 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
151
Christian Heimesfec925b2008-10-30 21:22:55 +0000152- Issue #4237: io.FileIO() was raising invalid warnings caused by
153 insufficient initialization of PyFileIOObject struct members.
154
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000155- Issue #4170: Pickling a collections.defaultdict object would crash the
156 interpreter.
157
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000158- Issue #4146: Compilation on OpenBSD has been restored.
159
Brett Cannonda780432008-10-17 03:38:50 +0000160- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
161
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000162- Issues #2384 and #3975: Tracebacks were not correctly printed when the
163 source file contains a ``coding:`` header: the wrong line was displayed, and
164 the encoding was not respected.
165
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000166- Issue #3740: Null-initialize module state.
167
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000168- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
169
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000170- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
171 contains non-ascii characters.
172
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000173- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
174
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000175Library
176-------
177
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000178- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
179 to call the base __init__ method.
180
181- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000182
Martin v. Löwis33b64502008-10-15 05:58:17 +0000183- Issue #4072: Restore build_py_2to3.
184
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000185- Issue #4014: Don't claim that Python has an Alpha release status, in addition
186 to claiming it is Mature.
187
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000188- Issue #3187: Add sys.setfilesystemencoding.
189
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000190- Issue #3187: Better support for "undecodable" filenames. Code by Victor
191 Stinner, with small tweaks by GvR.
192
Martin v. Löwis601149b2008-09-29 22:19:08 +0000193- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
194 true singleton object.
195
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000196- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
197
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000198- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
199 raise a TypeError: "'tuple' object is not callable" instead of the expected
200 dbm.error.
201
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000202- Bug #3884: Make the turtle module toplevel again.
203
Thomas Heller1308c262008-09-24 19:01:29 +0000204- Issue #3547: Fixed ctypes structures bitfields of varying integer
205 sizes.
206
Gerhard Häring6117f422008-09-22 06:04:51 +0000207Extension Modules
208-----------------
209
210- Issue #3659: Subclasses of str didn't work as SQL parameters.
211
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000212Build
213-----
214
Martin v. Löwis900646e2008-11-06 17:30:03 +0000215- Issue #4120: Exclude manifest from extension modules in VS2008.
216
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000217- Issue #4091: Install pythonxy.dll in system32 again.
218
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000219- Issue #4018: Disable "for me" installations on Vista.
220
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000221- Issue #4204: Fixed module build errors on FreeBSD 4.
222
Martin v. Löwis33b64502008-10-15 05:58:17 +0000223Tools/Demos
224-----------
225
Martin v. Löwis869bad92008-10-17 15:54:44 +0000226- Issue #3717: Fix Demo/embed/demo.c.
227
Martin v. Löwis33b64502008-10-15 05:58:17 +0000228- Issue #4072: Add a distutils demo for build_py_2to3.
229
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000230
Barry Warsaw8509df72008-08-21 03:02:47 +0000231What's New in Python 3.0 release candidate 1
232============================================
233
Barry Warsawb8854802008-09-18 03:00:28 +0000234*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000235
236Core and Builtins
237-----------------
238
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000239- Issue #3827: memoryview lost its size attribute in favor of using len(view).
240
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000241- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
242
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000243- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000244 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
245 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000246
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000247- Issue #3279: Importing site at interpreter was failing silently because the
248 site module uses the open builtin which was not initialized at the time.
249
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000250- Issue #3660: Corrected a reference leak in str.encode() when the encoder
251 does not return a bytes object.
252
253- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000254 error conditions.
255
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000256- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000257 tokenized by either a file path or file pointer for the benefit of
258 PyTokenizer_FindEncoding().
259
Antoine Pitroufff95302008-09-03 18:58:51 +0000260- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
261 these systems, the mbstowcs() function is slightly buggy and must be
262 replaced with strlen() for the purpose of counting of number of wide
263 characters needed to represent the multi-byte character string.
264
Antoine Pitrou658fad82008-09-03 18:34:34 +0000265- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
266 could be easily encountered under Windows in debug mode when exercising
267 the recursion limit checking code, due to bogus handling of recursion
268 limit when USE_STACKCHEK was enabled.
269
Brett Cannon54bd41d2008-09-02 04:01:42 +0000270- Issue 3639: The _warnings module could segfault the interpreter when
271 unexpected types were passed in as arguments.
272
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000273- Issue #3712: The memoryview object had a reference leak and didn't support
274 cyclic garbage collection.
275
Antoine Pitrouf71995782008-08-29 18:37:05 +0000276- Issue #3668: Fix a memory leak with the "s*" argument parser in
277 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
278 was correctly parsed but parsing of subsequent arguments failed.
279
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000280- Issue #3611: An exception __context__ could be cleared in a complex pattern
281 involving a __del__ method re-raising an exception.
282
Antoine Pitrouec569b72008-08-26 22:40:48 +0000283- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
284 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
285 mechanism. In the process, fix a bug where isinstance() and issubclass(),
286 when given a tuple of classes as second argument, were looking up
287 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
288 type object.
289
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000290- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
291
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000292- Issue #3651: Fix various memory leaks when using the buffer
293 interface, or when the "s#" code of PyArg_ParseTuple is given a
294 bytes object.
295
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000296- Issue #3657: Fix uninitialized memory read when pickling longs.
297 Found by valgrind.
298
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000299- Apply security patches from Apple.
300
Neal Norwitz2f99b242008-08-24 05:48:10 +0000301- Fix crashes on memory allocation failure found with failmalloc.
302
303- Fix memory leaks found with valgrind and update suppressions file.
304
305- Fix compiler warnings in opt mode which would lead to invalid memory reads.
306
307- Fix problem using wrong name in decimal module reported by pychecker.
308
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000309- Issue #3650: Fixed a reference leak in bytes.split('x').
310
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000311- bytes(o) now tries to use o.__bytes__() before using fallbacks.
312
Gregory P. Smith207f2112008-09-07 06:29:10 +0000313- Issue #1204: The configure script now tests for additional libraries
314 that may be required when linking against readline. This fixes issues
315 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
316
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000317C API
318-----
319
320- PyObject_Bytes and PyBytes_FromObject were added.
321
Barry Warsaw8509df72008-08-21 03:02:47 +0000322Library
323-------
324
Guido van Rossum698280d2008-09-10 17:44:35 +0000325- Issue #3756: make re.escape() handle bytes as well as str.
326
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000327- Issue #3800: fix filter() related bug in formatter.py.
328
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000329- Issue #874900: fix behaviour of threading module after a fork.
330
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000331- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
332
333- Issue #3776: Deprecate the bsddb package for removal in 3.0.
334
335- Issue #3762: platform.architecture() fails if python is lanched via
336 its symbolic link.
337
Antoine Pitroud79dc622008-09-05 00:03:33 +0000338- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
339
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000340- Issue #3160: the "bdist_wininst" distutils command didn't work.
341
Guilherme Polob212b752008-09-04 11:21:31 +0000342- Issue #1658: tkinter changes dict size during iteration in both
343 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
344
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000345- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000346 It is now maintained outside of the standard library at
347 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000348
Facundo Batistac469d4c2008-09-03 22:49:01 +0000349- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
350 to the urlparse one. Added a DeprecationWarning in the old module, it
351 will be deprecated in the future.
352
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000353- Issue #3719: platform.architecture() fails if there are spaces in the
354 path to the Python binary.
355
Brett Cannonec92e182008-09-02 02:46:59 +0000356- Issue 3602: As part of the merge of r66135, make the parameters on
357 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
358
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000359- The deprecation warnings for the camelCase threading API names were removed.
360
Jesse Noller338f5782008-09-03 18:22:19 +0000361- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
362 SEM_VALUE_MAX.
363
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000364Extension Modules
365-----------------
366
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000367- Issue #3782: os.write() must not accept unicode strings.
368
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000369- Issue #2975: When compiling several extension modules with Visual Studio 2008
370 from the same python interpreter, some environment variables would grow
371 without limit.
372
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000373- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
374 exploitation of poor argument checking.
375
Jesus Cea6ba33292008-08-31 14:12:11 +0000376- bsddb code updated to version 4.7.3pre2. This code is the same than
377 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
378 The Python code is automatically translated using "2to3". Please, do not
379 update this code in Python 3.0 by hand. Update the 2.6 one and then
380 do "2to3".
381
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000382- The _bytesio and _stringio modules are now compiled into the python binary.
383
Gregory P. Smith693fc462008-09-06 20:13:06 +0000384- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
385 mutable bytearray objects where they should have been using immutable bytes.
386
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000387- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
388 return bytes objects instead of bytearray objects.
389
Gregory P. Smith693fc462008-09-06 20:13:06 +0000390
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000391Tools/Demos
392-----------
393
394- Fix Misc/gdbinit so it works.
395
Barry Warsaw8509df72008-08-21 03:02:47 +0000396
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000397Build
398-----
399
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000400- Issue #3812: Failed to build python if configure --without-threads.
401
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000402- Issue #3791: Remove the bsddb module from the Windows installer, and the
403 core bsddb library from the Windows build files.
404
405
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000406What's new in Python 3.0b3?
407===========================
408
Barry Warsaw57c10582008-08-21 02:39:51 +0000409*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000410
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000411Core and Builtins
412-----------------
413
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000414- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
415 arguments.
416
Antoine Pitrou616d2852008-08-19 22:09:34 +0000417- Issue #2394: implement more of the memoryview API, with the caveat that
418 only one-dimensional contiguous buffers are supported and exercised right
419 now. Slicing, slice assignment and comparison (equality and inequality)
420 have been added. Also, the tolist() method has been implemented, but only
421 for byte buffers. Endly, the API has been updated to return bytes objects
422 wherever it used to return bytearrays.
423
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000424- Issue #3560: clean up the new C PyMemoryView API so that naming is
425 internally consistent; add macros PyMemoryView_GET_BASE() and
426 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
427 without relying on a particular implementation; remove the ill-named
428 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
429
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000430- ctypes function pointers that are COM methods have a boolean True
431 value again.
432
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000433- Issue #1819: function calls with several named parameters are now on
434 average 35% faster (as measured by pybench).
435
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000436- The undocumented C APIs PyUnicode_AsString() and
437 PyUnicode_AsStringAndSize() were made private to the interpreter, in
438 order to be able to refine their interfaces for Python 3.1.
439
440 If you need to access the UTF-8 representation of a Unicode object
441 as bytes string, please use PyUnicode_AsUTF8String() instead.
442
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000443- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
444 to Python 3.0's stricter semantics which allow to avoid successive
445 reallocations of the result string (this also affects str.join()).
446
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000447
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000448Library
449-------
450
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000451- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
452 a build problem on MacOS with CJK locales. It adds four temporary
453 mappings to existing legacy codecs that are virtually compatible
454 with Mac encodings. They will be replaced by codecs correctly
455 implemented in 3.1.
456
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000457- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
458 "global name 'header' is not defined".
459
Antoine Pitroufd036452008-08-19 17:56:33 +0000460- Issue #2834: update the regular expression library to match the unicode
461 standards of py3k. In other words, mixing bytes and unicode strings
462 (be it as pattern, search string or replacement string) raises a TypeError.
463 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
464 and can be disabled by specifying a new re.ASCII flag; as for bytes
465 patterns, ASCII matching is the only option and trying to specify re.UNICODE
466 for such patterns raises a ValueError.
467
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000468- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
469 Code contributed by Matt Giuca. quote() now encodes the input
470 before quoting, unquote() decodes after unquoting. There are
471 new arguments to change the encoding and errors settings.
472 There are also new APIs to skip the encode/decode steps.
473 [un]quote_plus() are also affected.
474
Nick Coghlan36f49522008-08-18 12:31:52 +0000475- Issue #2235: numbers.Number now blocks inheritance of the default id()
476 based hash because that hash mechanism is not correct for numeric types.
477 All concrete numeric types that inherit from Number (rather than just
478 registering with it) must explicitly provide a hash implementation in
479 order for their instances to be hashable.
480
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000481- Issue #2676: in the email package, content-type parsing was hanging on
482 pathological input because of quadratic or exponential behaviour of a
483 regular expression.
484
Antoine Pitrou87695762008-08-14 22:44:29 +0000485- Issue #3476: binary buffered reading through the new "io" library is now
486 thread-safe.
487
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000488- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
489 menu entries were not deleted.
490
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000491- Remove the TarFileCompat class from tarfile.py.
492
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000493- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
494 accepts the same parameters. It just checks that its first argument is an
495 integer.
496
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000497- Issue #3394: zipfile.writestr sets external attributes when passed a
498 file name rather than a ZipInfo instance, so files are extracted with
499 mode 0600 rather than 000 under Unix.
500
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000501- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
502 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000503
Martin v. Löwis371bb502008-08-16 13:02:57 +0000504Extension Modules
505-----------------
506
507- Bug #3542: Support Unicode strings in _msi module.
508
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000509What's new in Python 3.0b2?
510===========================
511
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000512*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000513
514Core and Builtins
515-----------------
516
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000517- Issue #3008: the float type has a new instance method 'float.hex'
518 and a new class method 'float.fromhex' to convert floating-point
519 numbers to and from hexadecimal strings, respectively.
520
Eric Smithd68af8f2008-07-16 00:15:35 +0000521- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
522 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
523
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000524- Issue #3280: like chr(), the "%c" format now accepts unicode code points
525 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
526 "narrow Unicode" builds, the result is a string of 2 code units, forming a
527 UTF-16 surrogate pair.
528
Georg Brandld52429f2008-07-04 15:55:02 +0000529- Issue #3282: str.isprintable() should return False for undefined
530 Unicode characters.
531
Martin v. Löwis029656f2008-06-30 04:06:08 +0000532- Issue #3236: Return small longs from PyLong_FromString.
533
Benjamin Petersone6528212008-07-15 15:32:09 +0000534- Exception tracebacks now support exception chaining.
535
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000536Library
537-------
538
Brett Cannonc2542e92008-07-25 18:19:20 +0000539- Removed the sunaudio module. Use sunau instead.
540
Thomas Heller47bc8092008-08-19 06:38:12 +0000541- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
542 api functions without holding the GIL, which could lead to a fatal
543 error when they failed.
544
545- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
546
Georg Brandl30704ea02008-07-23 15:07:12 +0000547- Removed "ast" function aliases from the parser module.
548
Thomas Heller15383a02008-07-15 19:46:52 +0000549- Issue #3313: Fixed a crash when a failed dlopen() call does not set
550 a valid dlerror() message.
551
Thomas Heller0261e1e2008-07-15 17:25:07 +0000552- Issue #3258: Fixed a crash when a ctypes POINTER type to an
553 incomplete structure was created.
554
Georg Brandl1abcbf82008-07-01 19:28:43 +0000555- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
556 argument now must be a bytes object in any case.
557
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000558- Issue #3145: help("modules whatever") failed when trying to load the source
559 code of every single module of the standard library, including invalid files
560 used in the test suite.
561
Georg Brandlbded4d32008-07-17 18:15:35 +0000562- The gettext library now consistently uses Unicode strings for message ids
563 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000564
Benjamin Petersone6528212008-07-15 15:32:09 +0000565- The traceback module has been expanded to handle chained exceptions.
566
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000567C API
568-----
569
570- Issue #3247: the function Py_FindMethod was removed. Modern types should
571 use the tp_methods slot instead.
572
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000573Tools/Demos
574-----------
575
Georg Brandl336341f2008-07-01 20:21:28 +0000576- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000577
Georg Brandl336341f2008-07-01 20:21:28 +0000578- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000579
580
Brett Cannon0d71ee72008-05-08 18:13:40 +0000581What's new in Python 3.0b1?
582===========================
583
Barry Warsawc1e689e2008-06-19 00:35:43 +0000584*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000585
586Core and Builtins
587-----------------
588
Brett Cannondb734912008-06-27 00:52:15 +0000589- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
590 argument being anything other than a dict or None. Also fixed a bug in error
591 handling when 'message' and 'category' were both set to None, triggering a
592 bus error.
593
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000594- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
595 holds the last (strong) reference to its referent.
596
Georg Brandl559e5d72008-06-11 18:37:52 +0000597- Issue #2630: implement PEP 3138. repr() now returns printable
598 Unicode characters unescaped, to get an ASCII-only representation
599 of an object use ascii().
600
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000601- Issue #1342: On windows, Python could not start when installed in a
602 directory with non-ascii characters.
603
Martin v. Löwis1a214512008-06-11 05:26:20 +0000604- Implement PEP 3121: new module initialization and finalization API.
605
Georg Brandle1b5ac62008-06-04 13:06:58 +0000606- Removed the already-defunct ``-t`` option.
607
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000608- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
609 unmarshalling many code objects, which happens when importing a
610 large .pyc file (~1000 functions).
611
Georg Brandl52b92cc2008-05-25 09:43:03 +0000612- Issue #2963: fix merging oversight that disabled method cache for
613 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000614
Georg Brandlc9b09532008-05-25 09:24:38 +0000615- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
616
Georg Brandl52b92cc2008-05-25 09:43:03 +0000617- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000618
Georg Brandl52b92cc2008-05-25 09:43:03 +0000619- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
620 code now allows any unicode string and returns a utf-8 encoded
621 buffer, just like the "s#" code already does. The "z" code was
622 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000623
Georg Brandl52b92cc2008-05-25 09:43:03 +0000624- Issue #2863: generators now have a ``gen.__name__`` attribute that
625 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
626 ``func.func_code.co_name``. The repr() of a generator now also
627 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000628
629- Issue #2831: enumerate() now has a ``start`` argument.
630
Georg Brandl52b92cc2008-05-25 09:43:03 +0000631- Issue #2801: fix bug in the float.is_integer method where a
632 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000633
Georg Brandl52b92cc2008-05-25 09:43:03 +0000634- The ``--with-toolbox-glue`` option (and the associated
635 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000636
Georg Brandl52b92cc2008-05-25 09:43:03 +0000637- Issue #2196: hasattr() now lets exceptions which do not inherit
638 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
639 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000640
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000641- #3021 Exception reraising sematics have been significantly improved. However,
642 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
643 code anymore.
644
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000645- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
646 removed.
647
Brett Cannon0d71ee72008-05-08 18:13:40 +0000648Extension Modules
649-----------------
650
Georg Brandl38feaf02008-05-25 07:45:51 +0000651- Renamed ``_winreg`` module to ``winreg``.
652
Georg Brandl52b92cc2008-05-25 09:43:03 +0000653- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
654 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000655
656- Support for Windows 9x has been removed from the winsound module.
657
Georg Brandl52b92cc2008-05-25 09:43:03 +0000658- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000659
Brett Cannon0d71ee72008-05-08 18:13:40 +0000660Library
661-------
662
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000663- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
664 symtable.Symbol have been removed.
665
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000666- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
667
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000668- a new ``urllib`` package was created. It consists of code from
669 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
670 modules have all been removed. The new package has five submodules:
671 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
672 ``urllib.error``, and ``urllib.robotparser``. The
673 ``urllib.request.urlopen()`` function uses the url opener from
674 ``urllib2``. (Note that the unittests have not been renamed for the
675 beta, but they will be renamed in the future.)
676
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000677- rfc822 has been removed in favor of the email package.
678
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000679- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000680
Barry Warsawf5019422008-06-12 02:42:00 +0000681- Patch #2849: Remove use of rfc822 module from standard library.
682
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000683- Added C optimized implementation of io.StringIO.
684
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000685- The ``pickle`` module is now automatically use an optimized C
686 implementation of Pickler and Unpickler when available. The
687 ``cPickle`` module is no longer needed.
688
Georg Brandl877b10a2008-06-01 21:25:55 +0000689- Removed the ``htmllib`` and ``sgmllib`` modules.
690
Georg Brandl61013952008-05-28 15:56:30 +0000691- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
692 been removed from ``http.cookies``.
693
Brett Cannona23810f2008-05-26 19:04:21 +0000694- The ``commands`` module has been removed. Its getoutput() and
695 getstatusoutput() functions have been moved to the ``subprocess`` module.
696
Georg Brandl3d5c4252008-05-26 18:03:26 +0000697- The ``http`` package was created; it contains the old ``httplib``
698 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
699 as ``http.cookiejar``, and the content of the three ``HTTPServer``
700 modules as ``http.server``.
701
Georg Brandl38eceaa2008-05-26 11:14:17 +0000702- The ``xmlrpc`` package was created; it contains the old
703 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
704 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000705 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000706
707- The ``dbm`` package was created, containing the old modules
708 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
709 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
710 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
711 as submodules.
712
Georg Brandl52b92cc2008-05-25 09:43:03 +0000713- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000714
Georg Brandl52b92cc2008-05-25 09:43:03 +0000715- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000716
Georg Brandl52b92cc2008-05-25 09:43:03 +0000717- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000718
Georg Brandl52b92cc2008-05-25 09:43:03 +0000719- Issue #2250: Exceptions raised during evaluation of names in
720 rlcompleter's ``Completer.complete()`` method are now caught and
721 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000722
Georg Brandl52b92cc2008-05-25 09:43:03 +0000723- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
724 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000725
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000726- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
727 large to fit in a C long. ldexp(x, n) now returns a zero (with
728 suitable sign) if n is large and negative; previously, it raised
729 OverflowError.
730
Georg Brandl52b92cc2008-05-25 09:43:03 +0000731- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000732
Georg Brandl52b92cc2008-05-25 09:43:03 +0000733- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000734
Georg Brandl52b92cc2008-05-25 09:43:03 +0000735- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000736
Georg Brandl52b92cc2008-05-25 09:43:03 +0000737- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000738
Georg Brandl52b92cc2008-05-25 09:43:03 +0000739- Fixed the ``__all__`` setting on ``collections`` to include
740 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000741
Brett Cannoncf3520c2008-05-11 22:47:58 +0000742- The sre module has been removed.
743
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000744- The Queue module has been renamed to queue.
745
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000746- The copy_reg module has been renamed to copyreg.
747
Brett Cannond8b61ee2008-05-11 03:00:26 +0000748- The mhlib module has been removed.
749
Brett Cannonbd474422008-05-10 22:42:14 +0000750- The ihooks module has been removed.
751
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000752- The fpformat module has been removed.
753
Brett Cannonf4fd9932008-05-10 21:11:46 +0000754- The dircache module has been removed.
755
Brett Cannond175b4c2008-05-10 03:19:54 +0000756- The Canvas module has been removed.
757
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000758- The Decimal module gained the magic methods __round__, __ceil__,
759 __floor__ and __trunc__, to give support for round, math.ceil,
760 math.floor and math.trunc.
761
Brett Cannon900ee3a2008-05-08 20:31:11 +0000762- The user module has been removed.
763
Brett Cannon34afe872008-05-08 20:31:44 +0000764- The mutex module has been removed.
765
Brett Cannon0d71ee72008-05-08 18:13:40 +0000766- The imputil module has been removed.
767
Georg Brandl52b92cc2008-05-25 09:43:03 +0000768- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000769
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000770- pdb gained the "until" command.
771
Georg Brandl52b92cc2008-05-25 09:43:03 +0000772- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000773
Georg Brandl32de7af2008-08-18 23:07:41 +0000774- The threading module API was renamed to be PEP 8 compliant. The
775 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000776
Georg Brandl294d5a92008-06-01 19:25:32 +0000777Tools/Demos
778-----------
779
780- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000781
Brett Cannon0d71ee72008-05-08 18:13:40 +0000782Build
783-----
784
785
Barry Warsaw66079cd2008-04-04 01:36:36 +0000786What's New in Python 3.0a5?
787===========================
788
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000789*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000790
791Core and Builtins
792-----------------
793
Georg Brandl52b92cc2008-05-25 09:43:03 +0000794- Fixed misbehaviour of PyLong_FromSsize_t on systems where
795 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000796
Georg Brandl52b92cc2008-05-25 09:43:03 +0000797- Issue #2221: Corrected a SystemError "error return without exception
798 set", when the code executed by exec() raises an exception, and
799 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000800
Georg Brandl52b92cc2008-05-25 09:43:03 +0000801- Bug #2565: The repr() of type objects now calls them 'class', not
802 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000803
Martin v. Löwis790465f2008-04-05 20:41:37 +0000804- The command line processing was converted to pass Unicode strings
805 through as unmodified as possible; as a consequence, the C API
806 related to command line arguments was changed to use wchar_t.
807
Georg Brandl52b92cc2008-05-25 09:43:03 +0000808- All backslashes in raw strings are interpreted literally. This
809 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000810
Barry Warsaw66079cd2008-04-04 01:36:36 +0000811Extension Modules
812-----------------
813
814Library
815-------
816
Georg Brandl52b92cc2008-05-25 09:43:03 +0000817- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000818
Thomas Hellere106dc32008-04-24 18:39:36 +0000819- Issue #2682: ctypes callback functions now longer contain a cyclic
820 reference to themselves.
821
Georg Brandl52b92cc2008-05-25 09:43:03 +0000822- Issue #2058: Remove the buf attribute and add __slots__ to the
823 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000824
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000825- Bug #2606: Avoid calling .sort() on a dict_keys object.
826
Thomas Hellerbff533b2008-04-04 19:53:14 +0000827- The bundled libffi copy is now in sync with the recently released
828 libffi3.0.5 version, apart from some small changes to
829 Modules/_ctypes/libffi/configure.ac.
830
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000831Build
832-----
833
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000834- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
835
Guido van Rossumdc21db32008-04-07 18:37:41 +0000836- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000837 accidentally overwriting a Python 2.x installation. Use "make
838 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000839
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000840- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
841 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000842
Georg Brandl52b92cc2008-05-25 09:43:03 +0000843
Barry Warsawa9d499d2008-03-01 18:38:07 +0000844What's New in Python 3.0a4?
845===========================
846
Barry Warsawbb5cd082008-04-02 23:33:27 +0000847*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000848
Martin v. Löwis25931462008-03-17 20:43:42 +0000849Core and Builtins
850-----------------
851
852- Bug #2301: Don't try decoding the source code into the original
853 encoding for syntax errors.
854
Martin v. Löwis92fab752008-03-08 10:40:41 +0000855Extension Modules
856-----------------
857
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000858- The dl module was removed, use the ctypes module instead.
859
Martin v. Löwis92fab752008-03-08 10:40:41 +0000860- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000861
Martin v. Löwis071ef772008-03-08 11:24:24 +0000862Library
863-------
864
Georg Brandl52b92cc2008-05-25 09:43:03 +0000865- The class distutils.commands.build_py.build_py_2to3 can be used as a
866 build_py replacement to automatically run 2to3 on modules that are
867 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000868
Guido van Rossumf4169812008-03-17 22:56:06 +0000869- A new pickle protocol (protocol 3) is added with explicit support
870 for bytes. This is the default protocol. It intentionally cannot
871 be unpickled by Python 2.x.
872
873- When a pickle written by Python 2.x contains an (8-bit) str
874 instance, this is now decoded to a (Unicode) str instance. The
875 encoding used to do this defaults to ASCII, but can be overridden
876 via two new keyword arguments to the Unpickler class. Previously
877 this would create bytes instances, which is usually wrong: str
878 instances are often used to pickle attribute names etc., and text is
879 more common than binary data anyway.
880
Martin v. Löwis071ef772008-03-08 11:24:24 +0000881- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000882 system doesn't support CODESET and LANG isn't set or doesn't allow
883 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000884
Georg Brandl52b92cc2008-05-25 09:43:03 +0000885- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
886 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000887
Georg Brandl52b92cc2008-05-25 09:43:03 +0000888- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
889 has been renamed tokenize and now works with bytes rather than
890 strings. A new detect_encoding function has been added for
891 determining source file encoding according to PEP-0263. Token
892 sequences returned by tokenize always start with an ENCODING token
893 which specifies the encoding used to decode the file. This token is
894 used to encode the output of untokenize back to bytes.
895
Barry Warsawa9d499d2008-03-01 18:38:07 +0000896
Christian Heimesbc873412007-12-08 22:11:32 +0000897What's New in Python 3.0a3?
898===========================
899
Barry Warsaw659fc422008-03-01 17:45:23 +0000900*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000901
902Core and Builtins
903-----------------
904
Georg Brandl52b92cc2008-05-25 09:43:03 +0000905- Issue #2282: io.TextIOWrapper was not overriding seekable() from
906 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000907
Georg Brandl52b92cc2008-05-25 09:43:03 +0000908- Issue #2115: Important speedup in setting __slot__ attributes. Also
909 prevent a possible crash: an Abstract Base Class would try to access
910 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000911
Georg Brandl52b92cc2008-05-25 09:43:03 +0000912- Fixed repr() and str() of complex numbers with infinity or nan as
913 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000914
Georg Brandl52b92cc2008-05-25 09:43:03 +0000915- Clear all free list during a gc.collect() of the highest generation
916 in order to allow pymalloc to free more arenas. Python may give back
917 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000918
Georg Brandl52b92cc2008-05-25 09:43:03 +0000919- Issue #2045: Fix an infinite recursion triggered when printing a
920 subclass of collections.defaultdict, if its default_factory is set
921 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000922
923- Fixed a minor memory leak in dictobject.c. The content of the free
924 list was not freed on interpreter shutdown.
925
Georg Brandl52b92cc2008-05-25 09:43:03 +0000926- Limit free list of method and builtin function objects to 256
927 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000928
Georg Brandl52b92cc2008-05-25 09:43:03 +0000929- Patch #1953: Added ``sys._compact_freelists()`` and the C API
930 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000931 to compact the internal free lists of pre-allocted ints and floats.
932
933- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000934 Python expected the return type int but the fork familie returns
935 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000936
Georg Brandl52b92cc2008-05-25 09:43:03 +0000937- Issue #1678380: Fix a bug that identifies 0j and -0j when they
938 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000939
Georg Brandl52b92cc2008-05-25 09:43:03 +0000940- Issue #2025: Added tuple.count() and tuple.index() methods to comply
941 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000942
Georg Brandl52b92cc2008-05-25 09:43:03 +0000943- Fixed multiple reinitialization of the Python interpreter. The small
944 int list in longobject.c has caused a seg fault during the third
945 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000946
Georg Brandl52b92cc2008-05-25 09:43:03 +0000947- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000948
Georg Brandl52b92cc2008-05-25 09:43:03 +0000949- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000950
Georg Brandl52b92cc2008-05-25 09:43:03 +0000951- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000952
Georg Brandl52b92cc2008-05-25 09:43:03 +0000953- map() no longer accepts None for the first argument. Use zip()
954 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000955
Facundo Batista2336bdd2008-01-19 19:12:01 +0000956- Issue #1769: Now int("- 1") is not allowed any more.
957
Georg Brandl52b92cc2008-05-25 09:43:03 +0000958- Object/longobject.c: long(float('nan')) raises an OverflowError
959 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000960
Georg Brandl52b92cc2008-05-25 09:43:03 +0000961- Issue #1762972: __file__ points to the source file instead of the
962 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000963
Guido van Rossumab078dd2008-01-06 00:09:11 +0000964- Issue #1393: object_richcompare() returns NotImplemented instead of
965 False if the objects aren't equal, to give the other side a chance.
966
Guido van Rossume239b002008-01-06 00:44:20 +0000967- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000968
Georg Brandl52b92cc2008-05-25 09:43:03 +0000969- Improve some exception messages when Windows fails to load an
970 extension module. Now we get for example '%1 is not a valid Win32
971 application' instead of 'error code 193'. Also use Unicode strings
972 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000973
Georg Brandl52b92cc2008-05-25 09:43:03 +0000974- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
975 Python C API has gained a new type *PyInstanceMethod_Type* and the
976 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
977 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000978
Georg Brandl52b92cc2008-05-25 09:43:03 +0000979- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
980 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
981 are now enough to print the corresponding list of objects considered
982 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000983
Georg Brandl52b92cc2008-05-25 09:43:03 +0000984- Issue #1573: Improper use of the keyword-only syntax makes the
985 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000986
Georg Brandl52b92cc2008-05-25 09:43:03 +0000987- Issue #1564: The set implementation should special-case PyUnicode
988 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000989
Guido van Rossumea6775b2008-02-21 20:16:31 +0000990- Patch #1031213: Decode source line in SyntaxErrors back to its
991 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000992
Christian Heimes09aaa882008-02-23 15:01:06 +0000993- inspect.getsource() includes the decorators again.
994
Guido van Rossumea6775b2008-02-21 20:16:31 +0000995- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
996 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000997
Georg Brandl52b92cc2008-05-25 09:43:03 +0000998- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
999 the first chunk fed to the decoder started with a BOM, but was
1000 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +00001001
Christian Heimesbc873412007-12-08 22:11:32 +00001002Extension Modules
1003-----------------
1004
Georg Brandl52b92cc2008-05-25 09:43:03 +00001005- Code for itertools ifilter(), imap(), and izip() moved to bultins
1006 and renamed to filter(), map(), and zip(). Also, renamed
1007 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +00001008
Georg Brandl52b92cc2008-05-25 09:43:03 +00001009- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +00001010
Georg Brandl52b92cc2008-05-25 09:43:03 +00001011- Bug #2111: mmap segfaults when trying to write a block opened with
1012 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +00001013
Georg Brandl52b92cc2008-05-25 09:43:03 +00001014- Issue #2063: correct order of utime and stime in os.times() result
1015 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +00001016
Christian Heimesbc873412007-12-08 22:11:32 +00001017Library
1018-------
1019
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001020- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001021
Georg Brandl52b92cc2008-05-25 09:43:03 +00001022- Created new UserDict class in collections module. This one inherits
1023 from and complies with the MutableMapping ABC. Also, moved
1024 UserString and UserList to the collections module. The
1025 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001026
Guido van Rossumea6775b2008-02-21 20:16:31 +00001027- Removed UserDict.DictMixin. Replaced all its uses with
1028 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001029
Guido van Rossume239b002008-01-06 00:44:20 +00001030- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001031
Guido van Rossume239b002008-01-06 00:44:20 +00001032- Issue #1585: IDLE uses non-existent xrange() function.
1033
1034- Issue #1578: Problems in win_getpass.
1035
Georg Brandl52d168a2008-01-07 18:10:24 +00001036Build
1037-----
1038
Georg Brandl52b92cc2008-05-25 09:43:03 +00001039- Renamed --enable-unicode configure flag to --with-wide-unicode,
1040 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001041
Guido van Rossume239b002008-01-06 00:44:20 +00001042C API
1043-----
1044
1045- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1046 Py_TYPE and Py_REFCNT.
1047
Georg Brandl52b92cc2008-05-25 09:43:03 +00001048- New API PyImport_ImportModuleNoBlock(), works like
1049 PyImport_ImportModule() but won't block on the import lock
1050 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001051
Christian Heimesbc873412007-12-08 22:11:32 +00001052
Fred Drake0e474a82007-10-11 18:01:43 +00001053What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001054===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001055
Guido van Rossum99533a92007-12-06 05:07:41 +00001056*Release date: 07-Dec-2007*
1057
1058(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001059
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001060Core and Builtins
1061-----------------
1062
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001063- str8 now has the same construction signature as bytes.
1064
Georg Brandl52b92cc2008-05-25 09:43:03 +00001065- Comparisons between str and str8 now return False/True for ==/!=.
1066 sqlite3 returns str8 when recreating on object from it's __conform__
1067 value. The struct module returns str8 for all string-related
1068 formats. This was true before this change, but becomes more
1069 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001070
Georg Brandl52b92cc2008-05-25 09:43:03 +00001071- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1072 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001073
1074- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1075
1076- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001077 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001078 `PyUnicode_DecodeFSDefault(char*)` was added.
1079
Georg Brandl52b92cc2008-05-25 09:43:03 +00001080- io.open() and _fileio.FileIO have grown a new argument closefd. A
1081 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001082
Georg Brandl52b92cc2008-05-25 09:43:03 +00001083- Added a new option -b to issues warnings (-bb for errors) about
1084 certain operations between bytes/buffer and str like str(b'') and
1085 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001086
Georg Brandl52b92cc2008-05-25 09:43:03 +00001087- The standards streams sys.stdin, stdout and stderr may be None when
1088 the when the C runtime library returns an invalid file descriptor
1089 for the streams (fileno(stdin) < 0). For now this happens only for
1090 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001091
Christian Heimesbce52be2007-11-17 19:08:41 +00001092- Added PCbuild9 directory for VS 2008.
1093
Georg Brandl52b92cc2008-05-25 09:43:03 +00001094- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1095 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001096
Georg Brandl52b92cc2008-05-25 09:43:03 +00001097- Unbound methods are gone for good. ClassObject.method returns an
1098 ordinary function object, instance.method still returns a bound
1099 method object. The API of bound methods is cleaned up, too. The
1100 im_class attribute is removed and im_func + im_self are renamed to
1101 __func__ and __self__. The factory PyMethod_New takes only func and
1102 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001103
Georg Brandl52b92cc2008-05-25 09:43:03 +00001104- intobject.h is no longer included by Python.h. The remains were
1105 moved to longobject.h. It still exists to define several aliases
1106 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001107
Christian Heimesa37d4c62007-12-04 23:02:19 +00001108- Removed sys.maxint, use sys.maxsize instead.
1109
Fred Drake0e474a82007-10-11 18:01:43 +00001110Extension Modules
1111-----------------
1112
1113- The `hotshot` profiler has been removed; use `cProfile` instead.
1114
Brett Cannone9fd2312007-10-12 19:18:19 +00001115Library
1116-------
1117
Georg Brandl52b92cc2008-05-25 09:43:03 +00001118- When loading an external file using testfile(), the passed-in
1119 encoding argument was being ignored if __loader__ is defined and
1120 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001121
Georg Brandl52b92cc2008-05-25 09:43:03 +00001122- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1123 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001124
Christian Heimesc9543e42007-11-28 08:28:28 +00001125- Removed the 'new' module.
1126
Georg Brandl52b92cc2008-05-25 09:43:03 +00001127- Removed all types from the 'types' module that are easily accessable
1128 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001129
Georg Brandl52d168a2008-01-07 18:10:24 +00001130
Guido van Rossum4405cf32007-08-30 17:16:55 +00001131What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001132==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001133
Guido van Rossum4405cf32007-08-30 17:16:55 +00001134*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001135
1136Core and Builtins
1137-----------------
1138
Martin v. Löwis47383402007-08-15 07:32:56 +00001139- PEP 3131: Support non-ASCII identifiers.
1140
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001141- PEP 3120: Change default encoding to UTF-8.
1142
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001143- PEP 3123: Use proper C inheritance for PyObject.
1144
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001145- Removed the __oct__ and __hex__ special methods and added a bin()
1146 builtin function.
1147
Georg Brandl52b92cc2008-05-25 09:43:03 +00001148- PEP 3127: octal literals now start with "0o". Old-style octal
1149 literals are invalid. There are binary literals with a prefix of
1150 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001151
Guido van Rossume7ba4952007-06-06 23:52:48 +00001152- None, True, False are now keywords.
1153
Guido van Rossum29478ef2007-05-29 00:39:44 +00001154- PEP 3119: isinstance() and issubclass() can be overridden.
1155
Guido van Rossumebe3e162007-05-17 18:20:34 +00001156- Remove BaseException.message.
1157
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001158- Remove tuple parameter unpacking (PEP 3113).
1159
Georg Brandl52b92cc2008-05-25 09:43:03 +00001160- Remove the f_restricted attribute from frames. This naturally leads
1161 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001162
Georg Brandl52b92cc2008-05-25 09:43:03 +00001163- PEP 3132 was accepted. That means that you can do ``a, *b =
1164 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001165
Georg Brandl52b92cc2008-05-25 09:43:03 +00001166- range() now returns an iterator rather than a list. Floats are not
1167 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001168
Nick Coghlan650f0d02007-04-15 12:05:43 +00001169- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001170 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001171
Guido van Rossume27dc722007-03-27 22:37:34 +00001172- By default, != returns the opposite of ==, unless the latter returns
1173 NotImplemented.
1174
Georg Brandl52b92cc2008-05-25 09:43:03 +00001175- Patch #1680961: sys.exitfunc has been removed and replaced with a
1176 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001177
Georg Brandl801dd732007-03-18 20:18:31 +00001178- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001179 keyword arg in the class statement, which can now use the full
1180 syntax of a parameter list. Also, the metaclass can implement a
1181 __prepare__ function which will be called to create the dictionary
1182 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001183
Georg Brandl428f0642007-03-18 18:35:15 +00001184- The long-deprecated argument "pend" of PyFloat_FromString() has been
1185 removed.
1186
Georg Brandle32b4222007-03-10 22:13:27 +00001187- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001188 its argument, if it exists. If not, it will work like before. This
1189 allows customizing the output of dir() in the presence of a
1190 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001191
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001192- Removed support for __members__ and __methods__.
1193
Georg Brandle32b4222007-03-10 22:13:27 +00001194- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001195
Georg Brandle32b4222007-03-10 22:13:27 +00001196- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001197 functionality formerly known as raw_input(); the name raw_input() is
1198 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001199
Georg Brandl52b92cc2008-05-25 09:43:03 +00001200- Classes listed in an 'except' clause must inherit from
1201 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001202
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001203- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001204 and .keys(), .items(), .values() return dict views, which behave
1205 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001206
Guido van Rossum8b545362007-02-09 23:52:14 +00001207- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001208 'softspace' attribute of files is now gone (since print() doesn't
1209 use it). A side effect of this change is that you can get
1210 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001211
1212 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001213 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001214
1215 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001216
Brett Cannon398db8b2007-01-29 23:44:37 +00001217- PEP 3102: keyword-only arguments.
1218
Georg Brandl52b92cc2008-05-25 09:43:03 +00001219- Int/Long unification is complete. The 'long' built-in type and
1220 literals with trailing 'L' or 'l' have been removed. Performance
1221 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001222
1223- 'except E, V' must now be spelled as 'except E as V' and deletes V
1224 at the end of the except clause; V must be a simple name.
1225
Neal Norwitzc1505362006-12-28 06:47:50 +00001226- Added function annotations per PEP 3107.
1227
Georg Brandl52b92cc2008-05-25 09:43:03 +00001228- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001229
1230 >>> def f(x):
1231 ... def inc():
1232 ... nonlocal x
1233 ... x += 1
1234 ... return x
1235 ... return inc
1236 ...
1237 >>> inc = f(0)
1238 >>> inc()
1239 1
1240 >>> inc()
1241 2
1242
Georg Brandl66a796e2006-12-19 20:50:34 +00001243- Moved intern() to sys.intern().
1244
1245- exec is now a function.
1246
1247- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001248
Neal Norwitz4886cc32006-08-21 17:06:07 +00001249- Classic classes are a thing of the past. All classes are new style.
1250
1251- Exceptions *must* derive from BaseException.
1252
1253- Integer division always returns a float. The -Q option is no more.
1254 All the following are gone:
1255 * PyNumber_Divide and PyNumber_InPlaceDivide
1256 * __div__, __rdiv__, and __idiv__
1257 * nb_divide, nb_inplace_divide
1258 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1259 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1260 if we want to re-use __div__ and friends. If we do, it will make
1261 it harder to write code for both 2.x and 3.x.)
1262
1263- 'as' and 'with' are keywords.
1264
1265- Absolute import is the default behavior for 'import foo' etc.
1266
Georg Brandl52b92cc2008-05-25 09:43:03 +00001267- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001268
Georg Brandl52b92cc2008-05-25 09:43:03 +00001269- Removed these Python builtins: apply(), callable(), coerce(),
1270 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001271
Georg Brandl52b92cc2008-05-25 09:43:03 +00001272- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001273
Georg Brandl52b92cc2008-05-25 09:43:03 +00001274- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001275
1276- Remove C API support for restricted execution.
1277
Guido van Rossumcf1be882007-08-30 22:07:17 +00001278- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001279 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001280 sequences of unequal length -- it now stops after the shortest one
1281 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001282
Georg Brandl52b92cc2008-05-25 09:43:03 +00001283- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001284
1285- Added class decorators per PEP 3129.
1286
1287
1288Extension Modules
1289-----------------
1290
Georg Brandl52b92cc2008-05-25 09:43:03 +00001291- Removed the imageop module. Obsolete long with its unit tests
1292 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001293
Georg Brandl52b92cc2008-05-25 09:43:03 +00001294- Removed these attributes from the operator module: div, idiv,
1295 __div__, __idiv__, isCallable, sequenceIncludes.
1296
1297- Removed these attributes from the sys module: exc_clear(), exc_type,
1298 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001299
1300
1301Library
1302-------
1303
Georg Brandl52b92cc2008-05-25 09:43:03 +00001304- Removed the compiler package. Use of the _ast module and (an
1305 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001306
Georg Brandl52b92cc2008-05-25 09:43:03 +00001307- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1308 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1309 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001310
Georg Brandl52b92cc2008-05-25 09:43:03 +00001311- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001312
Georg Brandl52b92cc2008-05-25 09:43:03 +00001313- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1314 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1315 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001316
Georg Brandl52b92cc2008-05-25 09:43:03 +00001317- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001318
Georg Brandl52b92cc2008-05-25 09:43:03 +00001319- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001320 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001321
Georg Brandl52b92cc2008-05-25 09:43:03 +00001322- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001323
Georg Brandl52b92cc2008-05-25 09:43:03 +00001324- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001325
1326- Patch #1680961: atexit has been reimplemented in C.
1327
Walter Dörwald41980ca2007-08-16 21:55:45 +00001328- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1329
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001330Build
1331-----
1332
1333C API
1334-----
1335
Georg Brandl52b92cc2008-05-25 09:43:03 +00001336- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001337
Georg Brandl52b92cc2008-05-25 09:43:03 +00001338- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1339 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001340
Georg Brandl52b92cc2008-05-25 09:43:03 +00001341- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001342
Georg Brandl52b92cc2008-05-25 09:43:03 +00001343- Removed these macros: staticforward, statichere, PyArg_GetInt,
1344 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001345
Georg Brandl52b92cc2008-05-25 09:43:03 +00001346- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1347 intintobjargproc, getreadbufferproc, getwritebufferproc,
1348 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001349
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001350Tests
1351-----
1352
Brett Cannone7a30f72008-03-03 03:36:27 +00001353- Removed test.testall as test.regrtest replaces it.
1354
Brett Cannonced04e02005-02-13 22:53:22 +00001355Documentation
1356-------------
1357
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001358Mac
1359---
1360
Georg Brandl52b92cc2008-05-25 09:43:03 +00001361- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001362
Guido van Rossum845702c2007-08-30 18:44:53 +00001363Platforms
1364---------
1365
1366- Support for BeOS and AtheOS was removed (according to PEP 11).
1367
1368- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1369
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001370Tools/Demos
1371-----------
1372
Georg Brandl52b92cc2008-05-25 09:43:03 +00001373
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001374**(For information about older versions, consult the HISTORY file.)**