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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
Thomas Heller60e5f5e2008-11-26 18:40:58 +000027- Issue #4433: Fixed an access violation when garbage collecting
28 _ctypes.COMError instances.
29
Thomas Heller71fb5132008-11-26 08:45:36 +000030- Issue #4429: Fixed UnicodeDecodeError in ctypes.
31
Christian Heimes3e7e0692008-11-25 21:21:32 +000032- Issue #4373: Corrected a potential reference leak in the pickle module and
33 silenced a false positive ref leak in distutils.tests.test_build_ext.
Amaury Forgeot d'Arc5f952572008-11-25 21:11:54 +000034
Brett Cannon2b5d6eb2008-11-24 21:09:58 +000035- Issue #4382: dbm.dumb did not specify the expected file encoding for opened
36 files.
37
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000038- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
39 fail to properly display the error message.
40
Brett Cannon7317c1e2008-11-25 19:19:17 +000041Docs
42----
43
44- Issue #3799: Document that dbm.gnu and dbm.ndbm will accept string arguments
45 for keys and values which will be converted to bytes before committal.
46
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000047
48What's New in Python 3.0 release candidate 3?
49=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000050
Barry Warsaw43baef42008-11-21 01:18:21 +000051*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000052
Benjamin Peterson6570d072008-11-07 03:51:42 +000053
Barry Warsawa7c37302008-11-07 03:46:33 +000054Core and Builtins
55-----------------
56
Benjamin Peterson4f39d222008-11-18 22:37:15 +000057- Issue #4349: sys.path included a non-existent platform directory because of a
58 faulty Makefile.
59
Martin v. Löwis276c3712008-11-17 16:22:11 +000060- Issue #3327: Don't overallocate in the modules_by_index list.
61
Raymond Hettinger7d99f092008-11-16 11:44:54 +000062- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000063 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000064 subclasses would be created without their __init__() method being called.
65 The corrected behavior brings sets into line with lists and dicts.
66
Mark Dickinson4a1f5932008-11-12 23:23:36 +000067- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
68 True, even when x doesn't compare equal to itself. This was a regression
69 from 2.6.
70
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000071- Issue #3705: Command-line arguments were not correctly decoded when the
72 terminal does not use UTF8.
73
Barry Warsawa7c37302008-11-07 03:46:33 +000074Library
75-------
76
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000077- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
78 the ctypes module is not present.
79
Benjamin Peterson44309e62008-11-22 00:41:45 +000080- FileIO's mode attribute now always includes ``"b"``.
81
Brett Cannon58425d32008-11-21 00:17:53 +000082- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
83 keys are now written out in UTF-8.
84
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +000085- Issue #4338: Fix distutils upload command.
86
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +000087- Issue #4354: Fix distutils register command.
88
Martin v. Löwis22d297b2008-11-19 09:14:30 +000089- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
90
Benjamin Peterson3d4ca742008-11-12 21:39:01 +000091- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
92 uses ``kwonlydefaults`` instead of ``kwdefaults``.
93
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +000094- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
95
96- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +000097
Martin v. Löwisbfda5442008-11-07 18:54:51 +000098Build
99-----
100
Martin v. Löwisa632a752008-11-19 13:55:07 +0000101- Issue #4289: Remove Cancel button from AdvancedDlg.
102
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000103- Issue #1656675: Register a drop handler for .py* files on Windows.
104
Benjamin Peterson06fd5f82008-11-08 17:24:34 +0000105Tools/Demos
106-----------
107
108- Demos of the socketserver module now work with Python 3.
109
Barry Warsawa7c37302008-11-07 03:46:33 +0000110
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000111What's New in Python 3.0 release candidate 2
112============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000113
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000114*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000115
116Core and Builtins
117-----------------
118
Benjamin Petersond968e272008-11-05 22:48:33 +0000119- Issue #4211: The __path__ attribute of frozen packages is now a list instead
120 of a string as required by PEP 302.
121
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000122- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000123
Christian Heimes933238a2008-11-05 19:44:21 +0000124- Issue #3714: Fixed nntplib by using bytes where appropriate.
125
Christian Heimesfb5faf02008-11-05 19:39:50 +0000126- Issue #1210: Fixed imaplib and its documentation.
127
Christian Heimesecc42a22008-11-05 19:30:32 +0000128- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
129 method on file objects with closefd=False. The file descriptor is still
130 kept open but the file object behaves like a closed file. The ``FileIO``
131 object also got a new readonly attribute ``closefd``.
132
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000133- Issue #3626: On cygwin, starting python with a non-existent script name
134 would not display anything if the file name is only 1 character long.
135
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000136- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
137 method does not return iterators for the 4th and 5th items.
138
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000139- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000140
Christian Heimes5833a2f2008-10-30 21:40:04 +0000141- Issue #4213: The file system encoding is now normalized by the
142 codec subsystem, for example UTF-8 is turned into utf-8.
143
Christian Heimes9c94ba42008-10-30 21:34:02 +0000144- Issue #4200: Changed the atexit module to store its state in its
145 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
146
Christian Heimesfec925b2008-10-30 21:22:55 +0000147- Issue #4237: io.FileIO() was raising invalid warnings caused by
148 insufficient initialization of PyFileIOObject struct members.
149
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000150- Issue #4170: Pickling a collections.defaultdict object would crash the
151 interpreter.
152
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000153- Issue #4146: Compilation on OpenBSD has been restored.
154
Brett Cannonda780432008-10-17 03:38:50 +0000155- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
156
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000157- Issues #2384 and #3975: Tracebacks were not correctly printed when the
158 source file contains a ``coding:`` header: the wrong line was displayed, and
159 the encoding was not respected.
160
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000161- Issue #3740: Null-initialize module state.
162
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000163- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
164
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000165- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
166 contains non-ascii characters.
167
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000168- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
169
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000170Library
171-------
172
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000173- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
174 to call the base __init__ method.
175
176- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000177
Martin v. Löwis33b64502008-10-15 05:58:17 +0000178- Issue #4072: Restore build_py_2to3.
179
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000180- Issue #4014: Don't claim that Python has an Alpha release status, in addition
181 to claiming it is Mature.
182
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000183- Issue #3187: Add sys.setfilesystemencoding.
184
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000185- Issue #3187: Better support for "undecodable" filenames. Code by Victor
186 Stinner, with small tweaks by GvR.
187
Martin v. Löwis601149b2008-09-29 22:19:08 +0000188- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
189 true singleton object.
190
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000191- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
192
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000193- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
194 raise a TypeError: "'tuple' object is not callable" instead of the expected
195 dbm.error.
196
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000197- Bug #3884: Make the turtle module toplevel again.
198
Thomas Heller1308c262008-09-24 19:01:29 +0000199- Issue #3547: Fixed ctypes structures bitfields of varying integer
200 sizes.
201
Gerhard Häring6117f422008-09-22 06:04:51 +0000202Extension Modules
203-----------------
204
205- Issue #3659: Subclasses of str didn't work as SQL parameters.
206
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000207Build
208-----
209
Martin v. Löwis900646e2008-11-06 17:30:03 +0000210- Issue #4120: Exclude manifest from extension modules in VS2008.
211
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000212- Issue #4091: Install pythonxy.dll in system32 again.
213
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000214- Issue #4018: Disable "for me" installations on Vista.
215
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000216- Issue #4204: Fixed module build errors on FreeBSD 4.
217
Martin v. Löwis33b64502008-10-15 05:58:17 +0000218Tools/Demos
219-----------
220
Martin v. Löwis869bad92008-10-17 15:54:44 +0000221- Issue #3717: Fix Demo/embed/demo.c.
222
Martin v. Löwis33b64502008-10-15 05:58:17 +0000223- Issue #4072: Add a distutils demo for build_py_2to3.
224
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000225
Barry Warsaw8509df72008-08-21 03:02:47 +0000226What's New in Python 3.0 release candidate 1
227============================================
228
Barry Warsawb8854802008-09-18 03:00:28 +0000229*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000230
231Core and Builtins
232-----------------
233
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000234- Issue #3827: memoryview lost its size attribute in favor of using len(view).
235
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000236- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
237
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000238- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000239 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
240 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000241
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000242- Issue #3279: Importing site at interpreter was failing silently because the
243 site module uses the open builtin which was not initialized at the time.
244
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000245- Issue #3660: Corrected a reference leak in str.encode() when the encoder
246 does not return a bytes object.
247
248- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000249 error conditions.
250
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000251- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000252 tokenized by either a file path or file pointer for the benefit of
253 PyTokenizer_FindEncoding().
254
Antoine Pitroufff95302008-09-03 18:58:51 +0000255- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
256 these systems, the mbstowcs() function is slightly buggy and must be
257 replaced with strlen() for the purpose of counting of number of wide
258 characters needed to represent the multi-byte character string.
259
Antoine Pitrou658fad82008-09-03 18:34:34 +0000260- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
261 could be easily encountered under Windows in debug mode when exercising
262 the recursion limit checking code, due to bogus handling of recursion
263 limit when USE_STACKCHEK was enabled.
264
Brett Cannon54bd41d2008-09-02 04:01:42 +0000265- Issue 3639: The _warnings module could segfault the interpreter when
266 unexpected types were passed in as arguments.
267
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000268- Issue #3712: The memoryview object had a reference leak and didn't support
269 cyclic garbage collection.
270
Antoine Pitrouf71995782008-08-29 18:37:05 +0000271- Issue #3668: Fix a memory leak with the "s*" argument parser in
272 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
273 was correctly parsed but parsing of subsequent arguments failed.
274
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000275- Issue #3611: An exception __context__ could be cleared in a complex pattern
276 involving a __del__ method re-raising an exception.
277
Antoine Pitrouec569b72008-08-26 22:40:48 +0000278- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
279 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
280 mechanism. In the process, fix a bug where isinstance() and issubclass(),
281 when given a tuple of classes as second argument, were looking up
282 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
283 type object.
284
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000285- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
286
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000287- Issue #3651: Fix various memory leaks when using the buffer
288 interface, or when the "s#" code of PyArg_ParseTuple is given a
289 bytes object.
290
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000291- Issue #3657: Fix uninitialized memory read when pickling longs.
292 Found by valgrind.
293
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000294- Apply security patches from Apple.
295
Neal Norwitz2f99b242008-08-24 05:48:10 +0000296- Fix crashes on memory allocation failure found with failmalloc.
297
298- Fix memory leaks found with valgrind and update suppressions file.
299
300- Fix compiler warnings in opt mode which would lead to invalid memory reads.
301
302- Fix problem using wrong name in decimal module reported by pychecker.
303
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000304- Issue #3650: Fixed a reference leak in bytes.split('x').
305
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000306- bytes(o) now tries to use o.__bytes__() before using fallbacks.
307
Gregory P. Smith207f2112008-09-07 06:29:10 +0000308- Issue #1204: The configure script now tests for additional libraries
309 that may be required when linking against readline. This fixes issues
310 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
311
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000312C API
313-----
314
315- PyObject_Bytes and PyBytes_FromObject were added.
316
Barry Warsaw8509df72008-08-21 03:02:47 +0000317Library
318-------
319
Guido van Rossum698280d2008-09-10 17:44:35 +0000320- Issue #3756: make re.escape() handle bytes as well as str.
321
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000322- Issue #3800: fix filter() related bug in formatter.py.
323
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000324- Issue #874900: fix behaviour of threading module after a fork.
325
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000326- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
327
328- Issue #3776: Deprecate the bsddb package for removal in 3.0.
329
330- Issue #3762: platform.architecture() fails if python is lanched via
331 its symbolic link.
332
Antoine Pitroud79dc622008-09-05 00:03:33 +0000333- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
334
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000335- Issue #3160: the "bdist_wininst" distutils command didn't work.
336
Guilherme Polob212b752008-09-04 11:21:31 +0000337- Issue #1658: tkinter changes dict size during iteration in both
338 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
339
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000340- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000341 It is now maintained outside of the standard library at
342 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000343
Facundo Batistac469d4c2008-09-03 22:49:01 +0000344- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
345 to the urlparse one. Added a DeprecationWarning in the old module, it
346 will be deprecated in the future.
347
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000348- Issue #3719: platform.architecture() fails if there are spaces in the
349 path to the Python binary.
350
Brett Cannonec92e182008-09-02 02:46:59 +0000351- Issue 3602: As part of the merge of r66135, make the parameters on
352 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
353
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000354- The deprecation warnings for the camelCase threading API names were removed.
355
Jesse Noller338f5782008-09-03 18:22:19 +0000356- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
357 SEM_VALUE_MAX.
358
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000359Extension Modules
360-----------------
361
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000362- Issue #3782: os.write() must not accept unicode strings.
363
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000364- Issue #2975: When compiling several extension modules with Visual Studio 2008
365 from the same python interpreter, some environment variables would grow
366 without limit.
367
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000368- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
369 exploitation of poor argument checking.
370
Jesus Cea6ba33292008-08-31 14:12:11 +0000371- bsddb code updated to version 4.7.3pre2. This code is the same than
372 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
373 The Python code is automatically translated using "2to3". Please, do not
374 update this code in Python 3.0 by hand. Update the 2.6 one and then
375 do "2to3".
376
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000377- The _bytesio and _stringio modules are now compiled into the python binary.
378
Gregory P. Smith693fc462008-09-06 20:13:06 +0000379- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
380 mutable bytearray objects where they should have been using immutable bytes.
381
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000382- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
383 return bytes objects instead of bytearray objects.
384
Gregory P. Smith693fc462008-09-06 20:13:06 +0000385
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000386Tools/Demos
387-----------
388
389- Fix Misc/gdbinit so it works.
390
Barry Warsaw8509df72008-08-21 03:02:47 +0000391
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000392Build
393-----
394
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000395- Issue #3812: Failed to build python if configure --without-threads.
396
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000397- Issue #3791: Remove the bsddb module from the Windows installer, and the
398 core bsddb library from the Windows build files.
399
400
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000401What's new in Python 3.0b3?
402===========================
403
Barry Warsaw57c10582008-08-21 02:39:51 +0000404*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000405
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000406Core and Builtins
407-----------------
408
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000409- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
410 arguments.
411
Antoine Pitrou616d2852008-08-19 22:09:34 +0000412- Issue #2394: implement more of the memoryview API, with the caveat that
413 only one-dimensional contiguous buffers are supported and exercised right
414 now. Slicing, slice assignment and comparison (equality and inequality)
415 have been added. Also, the tolist() method has been implemented, but only
416 for byte buffers. Endly, the API has been updated to return bytes objects
417 wherever it used to return bytearrays.
418
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000419- Issue #3560: clean up the new C PyMemoryView API so that naming is
420 internally consistent; add macros PyMemoryView_GET_BASE() and
421 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
422 without relying on a particular implementation; remove the ill-named
423 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
424
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000425- ctypes function pointers that are COM methods have a boolean True
426 value again.
427
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000428- Issue #1819: function calls with several named parameters are now on
429 average 35% faster (as measured by pybench).
430
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000431- The undocumented C APIs PyUnicode_AsString() and
432 PyUnicode_AsStringAndSize() were made private to the interpreter, in
433 order to be able to refine their interfaces for Python 3.1.
434
435 If you need to access the UTF-8 representation of a Unicode object
436 as bytes string, please use PyUnicode_AsUTF8String() instead.
437
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000438- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
439 to Python 3.0's stricter semantics which allow to avoid successive
440 reallocations of the result string (this also affects str.join()).
441
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000442
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000443Library
444-------
445
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000446- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
447 a build problem on MacOS with CJK locales. It adds four temporary
448 mappings to existing legacy codecs that are virtually compatible
449 with Mac encodings. They will be replaced by codecs correctly
450 implemented in 3.1.
451
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000452- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
453 "global name 'header' is not defined".
454
Antoine Pitroufd036452008-08-19 17:56:33 +0000455- Issue #2834: update the regular expression library to match the unicode
456 standards of py3k. In other words, mixing bytes and unicode strings
457 (be it as pattern, search string or replacement string) raises a TypeError.
458 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
459 and can be disabled by specifying a new re.ASCII flag; as for bytes
460 patterns, ASCII matching is the only option and trying to specify re.UNICODE
461 for such patterns raises a ValueError.
462
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000463- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
464 Code contributed by Matt Giuca. quote() now encodes the input
465 before quoting, unquote() decodes after unquoting. There are
466 new arguments to change the encoding and errors settings.
467 There are also new APIs to skip the encode/decode steps.
468 [un]quote_plus() are also affected.
469
Nick Coghlan36f49522008-08-18 12:31:52 +0000470- Issue #2235: numbers.Number now blocks inheritance of the default id()
471 based hash because that hash mechanism is not correct for numeric types.
472 All concrete numeric types that inherit from Number (rather than just
473 registering with it) must explicitly provide a hash implementation in
474 order for their instances to be hashable.
475
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000476- Issue #2676: in the email package, content-type parsing was hanging on
477 pathological input because of quadratic or exponential behaviour of a
478 regular expression.
479
Antoine Pitrou87695762008-08-14 22:44:29 +0000480- Issue #3476: binary buffered reading through the new "io" library is now
481 thread-safe.
482
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000483- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
484 menu entries were not deleted.
485
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000486- Remove the TarFileCompat class from tarfile.py.
487
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000488- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
489 accepts the same parameters. It just checks that its first argument is an
490 integer.
491
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000492- Issue #3394: zipfile.writestr sets external attributes when passed a
493 file name rather than a ZipInfo instance, so files are extracted with
494 mode 0600 rather than 000 under Unix.
495
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000496- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
497 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000498
Martin v. Löwis371bb502008-08-16 13:02:57 +0000499Extension Modules
500-----------------
501
502- Bug #3542: Support Unicode strings in _msi module.
503
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000504What's new in Python 3.0b2?
505===========================
506
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000507*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000508
509Core and Builtins
510-----------------
511
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000512- Issue #3008: the float type has a new instance method 'float.hex'
513 and a new class method 'float.fromhex' to convert floating-point
514 numbers to and from hexadecimal strings, respectively.
515
Eric Smithd68af8f2008-07-16 00:15:35 +0000516- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
517 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
518
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000519- Issue #3280: like chr(), the "%c" format now accepts unicode code points
520 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
521 "narrow Unicode" builds, the result is a string of 2 code units, forming a
522 UTF-16 surrogate pair.
523
Georg Brandld52429f2008-07-04 15:55:02 +0000524- Issue #3282: str.isprintable() should return False for undefined
525 Unicode characters.
526
Martin v. Löwis029656f2008-06-30 04:06:08 +0000527- Issue #3236: Return small longs from PyLong_FromString.
528
Benjamin Petersone6528212008-07-15 15:32:09 +0000529- Exception tracebacks now support exception chaining.
530
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000531Library
532-------
533
Brett Cannonc2542e92008-07-25 18:19:20 +0000534- Removed the sunaudio module. Use sunau instead.
535
Thomas Heller47bc8092008-08-19 06:38:12 +0000536- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
537 api functions without holding the GIL, which could lead to a fatal
538 error when they failed.
539
540- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
541
Georg Brandl30704ea02008-07-23 15:07:12 +0000542- Removed "ast" function aliases from the parser module.
543
Thomas Heller15383a02008-07-15 19:46:52 +0000544- Issue #3313: Fixed a crash when a failed dlopen() call does not set
545 a valid dlerror() message.
546
Thomas Heller0261e1e2008-07-15 17:25:07 +0000547- Issue #3258: Fixed a crash when a ctypes POINTER type to an
548 incomplete structure was created.
549
Georg Brandl1abcbf82008-07-01 19:28:43 +0000550- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
551 argument now must be a bytes object in any case.
552
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000553- Issue #3145: help("modules whatever") failed when trying to load the source
554 code of every single module of the standard library, including invalid files
555 used in the test suite.
556
Georg Brandlbded4d32008-07-17 18:15:35 +0000557- The gettext library now consistently uses Unicode strings for message ids
558 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000559
Benjamin Petersone6528212008-07-15 15:32:09 +0000560- The traceback module has been expanded to handle chained exceptions.
561
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000562C API
563-----
564
565- Issue #3247: the function Py_FindMethod was removed. Modern types should
566 use the tp_methods slot instead.
567
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000568Tools/Demos
569-----------
570
Georg Brandl336341f2008-07-01 20:21:28 +0000571- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000572
Georg Brandl336341f2008-07-01 20:21:28 +0000573- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000574
575
Brett Cannon0d71ee72008-05-08 18:13:40 +0000576What's new in Python 3.0b1?
577===========================
578
Barry Warsawc1e689e2008-06-19 00:35:43 +0000579*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000580
581Core and Builtins
582-----------------
583
Brett Cannondb734912008-06-27 00:52:15 +0000584- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
585 argument being anything other than a dict or None. Also fixed a bug in error
586 handling when 'message' and 'category' were both set to None, triggering a
587 bus error.
588
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000589- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
590 holds the last (strong) reference to its referent.
591
Georg Brandl559e5d72008-06-11 18:37:52 +0000592- Issue #2630: implement PEP 3138. repr() now returns printable
593 Unicode characters unescaped, to get an ASCII-only representation
594 of an object use ascii().
595
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000596- Issue #1342: On windows, Python could not start when installed in a
597 directory with non-ascii characters.
598
Martin v. Löwis1a214512008-06-11 05:26:20 +0000599- Implement PEP 3121: new module initialization and finalization API.
600
Georg Brandle1b5ac62008-06-04 13:06:58 +0000601- Removed the already-defunct ``-t`` option.
602
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000603- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
604 unmarshalling many code objects, which happens when importing a
605 large .pyc file (~1000 functions).
606
Georg Brandl52b92cc2008-05-25 09:43:03 +0000607- Issue #2963: fix merging oversight that disabled method cache for
608 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000609
Georg Brandlc9b09532008-05-25 09:24:38 +0000610- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
611
Georg Brandl52b92cc2008-05-25 09:43:03 +0000612- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000613
Georg Brandl52b92cc2008-05-25 09:43:03 +0000614- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
615 code now allows any unicode string and returns a utf-8 encoded
616 buffer, just like the "s#" code already does. The "z" code was
617 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000618
Georg Brandl52b92cc2008-05-25 09:43:03 +0000619- Issue #2863: generators now have a ``gen.__name__`` attribute that
620 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
621 ``func.func_code.co_name``. The repr() of a generator now also
622 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000623
624- Issue #2831: enumerate() now has a ``start`` argument.
625
Georg Brandl52b92cc2008-05-25 09:43:03 +0000626- Issue #2801: fix bug in the float.is_integer method where a
627 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000628
Georg Brandl52b92cc2008-05-25 09:43:03 +0000629- The ``--with-toolbox-glue`` option (and the associated
630 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000631
Georg Brandl52b92cc2008-05-25 09:43:03 +0000632- Issue #2196: hasattr() now lets exceptions which do not inherit
633 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
634 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000635
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000636- #3021 Exception reraising sematics have been significantly improved. However,
637 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
638 code anymore.
639
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000640- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
641 removed.
642
Brett Cannon0d71ee72008-05-08 18:13:40 +0000643Extension Modules
644-----------------
645
Georg Brandl38feaf02008-05-25 07:45:51 +0000646- Renamed ``_winreg`` module to ``winreg``.
647
Georg Brandl52b92cc2008-05-25 09:43:03 +0000648- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
649 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000650
651- Support for Windows 9x has been removed from the winsound module.
652
Georg Brandl52b92cc2008-05-25 09:43:03 +0000653- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000654
Brett Cannon0d71ee72008-05-08 18:13:40 +0000655Library
656-------
657
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000658- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
659 symtable.Symbol have been removed.
660
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000661- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
662
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000663- a new ``urllib`` package was created. It consists of code from
664 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
665 modules have all been removed. The new package has five submodules:
666 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
667 ``urllib.error``, and ``urllib.robotparser``. The
668 ``urllib.request.urlopen()`` function uses the url opener from
669 ``urllib2``. (Note that the unittests have not been renamed for the
670 beta, but they will be renamed in the future.)
671
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000672- rfc822 has been removed in favor of the email package.
673
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000674- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000675
Barry Warsawf5019422008-06-12 02:42:00 +0000676- Patch #2849: Remove use of rfc822 module from standard library.
677
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000678- Added C optimized implementation of io.StringIO.
679
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000680- The ``pickle`` module is now automatically use an optimized C
681 implementation of Pickler and Unpickler when available. The
682 ``cPickle`` module is no longer needed.
683
Georg Brandl877b10a2008-06-01 21:25:55 +0000684- Removed the ``htmllib`` and ``sgmllib`` modules.
685
Georg Brandl61013952008-05-28 15:56:30 +0000686- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
687 been removed from ``http.cookies``.
688
Brett Cannona23810f2008-05-26 19:04:21 +0000689- The ``commands`` module has been removed. Its getoutput() and
690 getstatusoutput() functions have been moved to the ``subprocess`` module.
691
Georg Brandl3d5c4252008-05-26 18:03:26 +0000692- The ``http`` package was created; it contains the old ``httplib``
693 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
694 as ``http.cookiejar``, and the content of the three ``HTTPServer``
695 modules as ``http.server``.
696
Georg Brandl38eceaa2008-05-26 11:14:17 +0000697- The ``xmlrpc`` package was created; it contains the old
698 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
699 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000700 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000701
702- The ``dbm`` package was created, containing the old modules
703 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
704 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
705 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
706 as submodules.
707
Georg Brandl52b92cc2008-05-25 09:43:03 +0000708- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000709
Georg Brandl52b92cc2008-05-25 09:43:03 +0000710- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000711
Georg Brandl52b92cc2008-05-25 09:43:03 +0000712- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000713
Georg Brandl52b92cc2008-05-25 09:43:03 +0000714- Issue #2250: Exceptions raised during evaluation of names in
715 rlcompleter's ``Completer.complete()`` method are now caught and
716 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000717
Georg Brandl52b92cc2008-05-25 09:43:03 +0000718- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
719 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000720
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000721- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
722 large to fit in a C long. ldexp(x, n) now returns a zero (with
723 suitable sign) if n is large and negative; previously, it raised
724 OverflowError.
725
Georg Brandl52b92cc2008-05-25 09:43:03 +0000726- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000727
Georg Brandl52b92cc2008-05-25 09:43:03 +0000728- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000729
Georg Brandl52b92cc2008-05-25 09:43:03 +0000730- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000731
Georg Brandl52b92cc2008-05-25 09:43:03 +0000732- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000733
Georg Brandl52b92cc2008-05-25 09:43:03 +0000734- Fixed the ``__all__`` setting on ``collections`` to include
735 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000736
Brett Cannoncf3520c2008-05-11 22:47:58 +0000737- The sre module has been removed.
738
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000739- The Queue module has been renamed to queue.
740
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000741- The copy_reg module has been renamed to copyreg.
742
Brett Cannond8b61ee2008-05-11 03:00:26 +0000743- The mhlib module has been removed.
744
Brett Cannonbd474422008-05-10 22:42:14 +0000745- The ihooks module has been removed.
746
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000747- The fpformat module has been removed.
748
Brett Cannonf4fd9932008-05-10 21:11:46 +0000749- The dircache module has been removed.
750
Brett Cannond175b4c2008-05-10 03:19:54 +0000751- The Canvas module has been removed.
752
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000753- The Decimal module gained the magic methods __round__, __ceil__,
754 __floor__ and __trunc__, to give support for round, math.ceil,
755 math.floor and math.trunc.
756
Brett Cannon900ee3a2008-05-08 20:31:11 +0000757- The user module has been removed.
758
Brett Cannon34afe872008-05-08 20:31:44 +0000759- The mutex module has been removed.
760
Brett Cannon0d71ee72008-05-08 18:13:40 +0000761- The imputil module has been removed.
762
Georg Brandl52b92cc2008-05-25 09:43:03 +0000763- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000764
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000765- pdb gained the "until" command.
766
Georg Brandl52b92cc2008-05-25 09:43:03 +0000767- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000768
Georg Brandl32de7af2008-08-18 23:07:41 +0000769- The threading module API was renamed to be PEP 8 compliant. The
770 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000771
Georg Brandl294d5a92008-06-01 19:25:32 +0000772Tools/Demos
773-----------
774
775- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000776
Brett Cannon0d71ee72008-05-08 18:13:40 +0000777Build
778-----
779
780
Barry Warsaw66079cd2008-04-04 01:36:36 +0000781What's New in Python 3.0a5?
782===========================
783
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000784*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000785
786Core and Builtins
787-----------------
788
Georg Brandl52b92cc2008-05-25 09:43:03 +0000789- Fixed misbehaviour of PyLong_FromSsize_t on systems where
790 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000791
Georg Brandl52b92cc2008-05-25 09:43:03 +0000792- Issue #2221: Corrected a SystemError "error return without exception
793 set", when the code executed by exec() raises an exception, and
794 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000795
Georg Brandl52b92cc2008-05-25 09:43:03 +0000796- Bug #2565: The repr() of type objects now calls them 'class', not
797 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000798
Martin v. Löwis790465f2008-04-05 20:41:37 +0000799- The command line processing was converted to pass Unicode strings
800 through as unmodified as possible; as a consequence, the C API
801 related to command line arguments was changed to use wchar_t.
802
Georg Brandl52b92cc2008-05-25 09:43:03 +0000803- All backslashes in raw strings are interpreted literally. This
804 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000805
Barry Warsaw66079cd2008-04-04 01:36:36 +0000806Extension Modules
807-----------------
808
809Library
810-------
811
Georg Brandl52b92cc2008-05-25 09:43:03 +0000812- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000813
Thomas Hellere106dc32008-04-24 18:39:36 +0000814- Issue #2682: ctypes callback functions now longer contain a cyclic
815 reference to themselves.
816
Georg Brandl52b92cc2008-05-25 09:43:03 +0000817- Issue #2058: Remove the buf attribute and add __slots__ to the
818 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000819
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000820- Bug #2606: Avoid calling .sort() on a dict_keys object.
821
Thomas Hellerbff533b2008-04-04 19:53:14 +0000822- The bundled libffi copy is now in sync with the recently released
823 libffi3.0.5 version, apart from some small changes to
824 Modules/_ctypes/libffi/configure.ac.
825
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000826Build
827-----
828
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000829- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
830
Guido van Rossumdc21db32008-04-07 18:37:41 +0000831- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000832 accidentally overwriting a Python 2.x installation. Use "make
833 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000834
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000835- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
836 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000837
Georg Brandl52b92cc2008-05-25 09:43:03 +0000838
Barry Warsawa9d499d2008-03-01 18:38:07 +0000839What's New in Python 3.0a4?
840===========================
841
Barry Warsawbb5cd082008-04-02 23:33:27 +0000842*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000843
Martin v. Löwis25931462008-03-17 20:43:42 +0000844Core and Builtins
845-----------------
846
847- Bug #2301: Don't try decoding the source code into the original
848 encoding for syntax errors.
849
Martin v. Löwis92fab752008-03-08 10:40:41 +0000850Extension Modules
851-----------------
852
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000853- The dl module was removed, use the ctypes module instead.
854
Martin v. Löwis92fab752008-03-08 10:40:41 +0000855- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000856
Martin v. Löwis071ef772008-03-08 11:24:24 +0000857Library
858-------
859
Georg Brandl52b92cc2008-05-25 09:43:03 +0000860- The class distutils.commands.build_py.build_py_2to3 can be used as a
861 build_py replacement to automatically run 2to3 on modules that are
862 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000863
Guido van Rossumf4169812008-03-17 22:56:06 +0000864- A new pickle protocol (protocol 3) is added with explicit support
865 for bytes. This is the default protocol. It intentionally cannot
866 be unpickled by Python 2.x.
867
868- When a pickle written by Python 2.x contains an (8-bit) str
869 instance, this is now decoded to a (Unicode) str instance. The
870 encoding used to do this defaults to ASCII, but can be overridden
871 via two new keyword arguments to the Unpickler class. Previously
872 this would create bytes instances, which is usually wrong: str
873 instances are often used to pickle attribute names etc., and text is
874 more common than binary data anyway.
875
Martin v. Löwis071ef772008-03-08 11:24:24 +0000876- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000877 system doesn't support CODESET and LANG isn't set or doesn't allow
878 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000879
Georg Brandl52b92cc2008-05-25 09:43:03 +0000880- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
881 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000882
Georg Brandl52b92cc2008-05-25 09:43:03 +0000883- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
884 has been renamed tokenize and now works with bytes rather than
885 strings. A new detect_encoding function has been added for
886 determining source file encoding according to PEP-0263. Token
887 sequences returned by tokenize always start with an ENCODING token
888 which specifies the encoding used to decode the file. This token is
889 used to encode the output of untokenize back to bytes.
890
Barry Warsawa9d499d2008-03-01 18:38:07 +0000891
Christian Heimesbc873412007-12-08 22:11:32 +0000892What's New in Python 3.0a3?
893===========================
894
Barry Warsaw659fc422008-03-01 17:45:23 +0000895*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000896
897Core and Builtins
898-----------------
899
Georg Brandl52b92cc2008-05-25 09:43:03 +0000900- Issue #2282: io.TextIOWrapper was not overriding seekable() from
901 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000902
Georg Brandl52b92cc2008-05-25 09:43:03 +0000903- Issue #2115: Important speedup in setting __slot__ attributes. Also
904 prevent a possible crash: an Abstract Base Class would try to access
905 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000906
Georg Brandl52b92cc2008-05-25 09:43:03 +0000907- Fixed repr() and str() of complex numbers with infinity or nan as
908 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000909
Georg Brandl52b92cc2008-05-25 09:43:03 +0000910- Clear all free list during a gc.collect() of the highest generation
911 in order to allow pymalloc to free more arenas. Python may give back
912 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000913
Georg Brandl52b92cc2008-05-25 09:43:03 +0000914- Issue #2045: Fix an infinite recursion triggered when printing a
915 subclass of collections.defaultdict, if its default_factory is set
916 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000917
918- Fixed a minor memory leak in dictobject.c. The content of the free
919 list was not freed on interpreter shutdown.
920
Georg Brandl52b92cc2008-05-25 09:43:03 +0000921- Limit free list of method and builtin function objects to 256
922 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000923
Georg Brandl52b92cc2008-05-25 09:43:03 +0000924- Patch #1953: Added ``sys._compact_freelists()`` and the C API
925 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000926 to compact the internal free lists of pre-allocted ints and floats.
927
928- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000929 Python expected the return type int but the fork familie returns
930 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000931
Georg Brandl52b92cc2008-05-25 09:43:03 +0000932- Issue #1678380: Fix a bug that identifies 0j and -0j when they
933 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000934
Georg Brandl52b92cc2008-05-25 09:43:03 +0000935- Issue #2025: Added tuple.count() and tuple.index() methods to comply
936 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000937
Georg Brandl52b92cc2008-05-25 09:43:03 +0000938- Fixed multiple reinitialization of the Python interpreter. The small
939 int list in longobject.c has caused a seg fault during the third
940 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000941
Georg Brandl52b92cc2008-05-25 09:43:03 +0000942- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000943
Georg Brandl52b92cc2008-05-25 09:43:03 +0000944- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000945
Georg Brandl52b92cc2008-05-25 09:43:03 +0000946- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000947
Georg Brandl52b92cc2008-05-25 09:43:03 +0000948- map() no longer accepts None for the first argument. Use zip()
949 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000950
Facundo Batista2336bdd2008-01-19 19:12:01 +0000951- Issue #1769: Now int("- 1") is not allowed any more.
952
Georg Brandl52b92cc2008-05-25 09:43:03 +0000953- Object/longobject.c: long(float('nan')) raises an OverflowError
954 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000955
Georg Brandl52b92cc2008-05-25 09:43:03 +0000956- Issue #1762972: __file__ points to the source file instead of the
957 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000958
Guido van Rossumab078dd2008-01-06 00:09:11 +0000959- Issue #1393: object_richcompare() returns NotImplemented instead of
960 False if the objects aren't equal, to give the other side a chance.
961
Guido van Rossume239b002008-01-06 00:44:20 +0000962- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000963
Georg Brandl52b92cc2008-05-25 09:43:03 +0000964- Improve some exception messages when Windows fails to load an
965 extension module. Now we get for example '%1 is not a valid Win32
966 application' instead of 'error code 193'. Also use Unicode strings
967 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000968
Georg Brandl52b92cc2008-05-25 09:43:03 +0000969- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
970 Python C API has gained a new type *PyInstanceMethod_Type* and the
971 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
972 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000973
Georg Brandl52b92cc2008-05-25 09:43:03 +0000974- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
975 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
976 are now enough to print the corresponding list of objects considered
977 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000978
Georg Brandl52b92cc2008-05-25 09:43:03 +0000979- Issue #1573: Improper use of the keyword-only syntax makes the
980 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000981
Georg Brandl52b92cc2008-05-25 09:43:03 +0000982- Issue #1564: The set implementation should special-case PyUnicode
983 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000984
Guido van Rossumea6775b2008-02-21 20:16:31 +0000985- Patch #1031213: Decode source line in SyntaxErrors back to its
986 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000987
Christian Heimes09aaa882008-02-23 15:01:06 +0000988- inspect.getsource() includes the decorators again.
989
Guido van Rossumea6775b2008-02-21 20:16:31 +0000990- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
991 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000992
Georg Brandl52b92cc2008-05-25 09:43:03 +0000993- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
994 the first chunk fed to the decoder started with a BOM, but was
995 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000996
Christian Heimesbc873412007-12-08 22:11:32 +0000997Extension Modules
998-----------------
999
Georg Brandl52b92cc2008-05-25 09:43:03 +00001000- Code for itertools ifilter(), imap(), and izip() moved to bultins
1001 and renamed to filter(), map(), and zip(). Also, renamed
1002 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +00001003
Georg Brandl52b92cc2008-05-25 09:43:03 +00001004- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +00001005
Georg Brandl52b92cc2008-05-25 09:43:03 +00001006- Bug #2111: mmap segfaults when trying to write a block opened with
1007 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +00001008
Georg Brandl52b92cc2008-05-25 09:43:03 +00001009- Issue #2063: correct order of utime and stime in os.times() result
1010 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +00001011
Christian Heimesbc873412007-12-08 22:11:32 +00001012Library
1013-------
1014
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001015- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001016
Georg Brandl52b92cc2008-05-25 09:43:03 +00001017- Created new UserDict class in collections module. This one inherits
1018 from and complies with the MutableMapping ABC. Also, moved
1019 UserString and UserList to the collections module. The
1020 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001021
Guido van Rossumea6775b2008-02-21 20:16:31 +00001022- Removed UserDict.DictMixin. Replaced all its uses with
1023 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001024
Guido van Rossume239b002008-01-06 00:44:20 +00001025- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001026
Guido van Rossume239b002008-01-06 00:44:20 +00001027- Issue #1585: IDLE uses non-existent xrange() function.
1028
1029- Issue #1578: Problems in win_getpass.
1030
Georg Brandl52d168a2008-01-07 18:10:24 +00001031Build
1032-----
1033
Georg Brandl52b92cc2008-05-25 09:43:03 +00001034- Renamed --enable-unicode configure flag to --with-wide-unicode,
1035 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001036
Guido van Rossume239b002008-01-06 00:44:20 +00001037C API
1038-----
1039
1040- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1041 Py_TYPE and Py_REFCNT.
1042
Georg Brandl52b92cc2008-05-25 09:43:03 +00001043- New API PyImport_ImportModuleNoBlock(), works like
1044 PyImport_ImportModule() but won't block on the import lock
1045 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001046
Christian Heimesbc873412007-12-08 22:11:32 +00001047
Fred Drake0e474a82007-10-11 18:01:43 +00001048What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001049===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001050
Guido van Rossum99533a92007-12-06 05:07:41 +00001051*Release date: 07-Dec-2007*
1052
1053(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001054
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001055Core and Builtins
1056-----------------
1057
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001058- str8 now has the same construction signature as bytes.
1059
Georg Brandl52b92cc2008-05-25 09:43:03 +00001060- Comparisons between str and str8 now return False/True for ==/!=.
1061 sqlite3 returns str8 when recreating on object from it's __conform__
1062 value. The struct module returns str8 for all string-related
1063 formats. This was true before this change, but becomes more
1064 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001065
Georg Brandl52b92cc2008-05-25 09:43:03 +00001066- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1067 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001068
1069- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1070
1071- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001072 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001073 `PyUnicode_DecodeFSDefault(char*)` was added.
1074
Georg Brandl52b92cc2008-05-25 09:43:03 +00001075- io.open() and _fileio.FileIO have grown a new argument closefd. A
1076 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001077
Georg Brandl52b92cc2008-05-25 09:43:03 +00001078- Added a new option -b to issues warnings (-bb for errors) about
1079 certain operations between bytes/buffer and str like str(b'') and
1080 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001081
Georg Brandl52b92cc2008-05-25 09:43:03 +00001082- The standards streams sys.stdin, stdout and stderr may be None when
1083 the when the C runtime library returns an invalid file descriptor
1084 for the streams (fileno(stdin) < 0). For now this happens only for
1085 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001086
Christian Heimesbce52be2007-11-17 19:08:41 +00001087- Added PCbuild9 directory for VS 2008.
1088
Georg Brandl52b92cc2008-05-25 09:43:03 +00001089- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1090 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001091
Georg Brandl52b92cc2008-05-25 09:43:03 +00001092- Unbound methods are gone for good. ClassObject.method returns an
1093 ordinary function object, instance.method still returns a bound
1094 method object. The API of bound methods is cleaned up, too. The
1095 im_class attribute is removed and im_func + im_self are renamed to
1096 __func__ and __self__. The factory PyMethod_New takes only func and
1097 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001098
Georg Brandl52b92cc2008-05-25 09:43:03 +00001099- intobject.h is no longer included by Python.h. The remains were
1100 moved to longobject.h. It still exists to define several aliases
1101 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001102
Christian Heimesa37d4c62007-12-04 23:02:19 +00001103- Removed sys.maxint, use sys.maxsize instead.
1104
Fred Drake0e474a82007-10-11 18:01:43 +00001105Extension Modules
1106-----------------
1107
1108- The `hotshot` profiler has been removed; use `cProfile` instead.
1109
Brett Cannone9fd2312007-10-12 19:18:19 +00001110Library
1111-------
1112
Georg Brandl52b92cc2008-05-25 09:43:03 +00001113- When loading an external file using testfile(), the passed-in
1114 encoding argument was being ignored if __loader__ is defined and
1115 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001116
Georg Brandl52b92cc2008-05-25 09:43:03 +00001117- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1118 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001119
Christian Heimesc9543e42007-11-28 08:28:28 +00001120- Removed the 'new' module.
1121
Georg Brandl52b92cc2008-05-25 09:43:03 +00001122- Removed all types from the 'types' module that are easily accessable
1123 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001124
Georg Brandl52d168a2008-01-07 18:10:24 +00001125
Guido van Rossum4405cf32007-08-30 17:16:55 +00001126What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001127==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001128
Guido van Rossum4405cf32007-08-30 17:16:55 +00001129*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001130
1131Core and Builtins
1132-----------------
1133
Martin v. Löwis47383402007-08-15 07:32:56 +00001134- PEP 3131: Support non-ASCII identifiers.
1135
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001136- PEP 3120: Change default encoding to UTF-8.
1137
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001138- PEP 3123: Use proper C inheritance for PyObject.
1139
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001140- Removed the __oct__ and __hex__ special methods and added a bin()
1141 builtin function.
1142
Georg Brandl52b92cc2008-05-25 09:43:03 +00001143- PEP 3127: octal literals now start with "0o". Old-style octal
1144 literals are invalid. There are binary literals with a prefix of
1145 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001146
Guido van Rossume7ba4952007-06-06 23:52:48 +00001147- None, True, False are now keywords.
1148
Guido van Rossum29478ef2007-05-29 00:39:44 +00001149- PEP 3119: isinstance() and issubclass() can be overridden.
1150
Guido van Rossumebe3e162007-05-17 18:20:34 +00001151- Remove BaseException.message.
1152
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001153- Remove tuple parameter unpacking (PEP 3113).
1154
Georg Brandl52b92cc2008-05-25 09:43:03 +00001155- Remove the f_restricted attribute from frames. This naturally leads
1156 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001157
Georg Brandl52b92cc2008-05-25 09:43:03 +00001158- PEP 3132 was accepted. That means that you can do ``a, *b =
1159 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001160
Georg Brandl52b92cc2008-05-25 09:43:03 +00001161- range() now returns an iterator rather than a list. Floats are not
1162 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001163
Nick Coghlan650f0d02007-04-15 12:05:43 +00001164- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001165 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001166
Guido van Rossume27dc722007-03-27 22:37:34 +00001167- By default, != returns the opposite of ==, unless the latter returns
1168 NotImplemented.
1169
Georg Brandl52b92cc2008-05-25 09:43:03 +00001170- Patch #1680961: sys.exitfunc has been removed and replaced with a
1171 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001172
Georg Brandl801dd732007-03-18 20:18:31 +00001173- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001174 keyword arg in the class statement, which can now use the full
1175 syntax of a parameter list. Also, the metaclass can implement a
1176 __prepare__ function which will be called to create the dictionary
1177 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001178
Georg Brandl428f0642007-03-18 18:35:15 +00001179- The long-deprecated argument "pend" of PyFloat_FromString() has been
1180 removed.
1181
Georg Brandle32b4222007-03-10 22:13:27 +00001182- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001183 its argument, if it exists. If not, it will work like before. This
1184 allows customizing the output of dir() in the presence of a
1185 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001186
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001187- Removed support for __members__ and __methods__.
1188
Georg Brandle32b4222007-03-10 22:13:27 +00001189- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001190
Georg Brandle32b4222007-03-10 22:13:27 +00001191- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001192 functionality formerly known as raw_input(); the name raw_input() is
1193 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001194
Georg Brandl52b92cc2008-05-25 09:43:03 +00001195- Classes listed in an 'except' clause must inherit from
1196 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001197
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001198- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001199 and .keys(), .items(), .values() return dict views, which behave
1200 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001201
Guido van Rossum8b545362007-02-09 23:52:14 +00001202- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001203 'softspace' attribute of files is now gone (since print() doesn't
1204 use it). A side effect of this change is that you can get
1205 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001206
1207 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001208 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001209
1210 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001211
Brett Cannon398db8b2007-01-29 23:44:37 +00001212- PEP 3102: keyword-only arguments.
1213
Georg Brandl52b92cc2008-05-25 09:43:03 +00001214- Int/Long unification is complete. The 'long' built-in type and
1215 literals with trailing 'L' or 'l' have been removed. Performance
1216 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001217
1218- 'except E, V' must now be spelled as 'except E as V' and deletes V
1219 at the end of the except clause; V must be a simple name.
1220
Neal Norwitzc1505362006-12-28 06:47:50 +00001221- Added function annotations per PEP 3107.
1222
Georg Brandl52b92cc2008-05-25 09:43:03 +00001223- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001224
1225 >>> def f(x):
1226 ... def inc():
1227 ... nonlocal x
1228 ... x += 1
1229 ... return x
1230 ... return inc
1231 ...
1232 >>> inc = f(0)
1233 >>> inc()
1234 1
1235 >>> inc()
1236 2
1237
Georg Brandl66a796e2006-12-19 20:50:34 +00001238- Moved intern() to sys.intern().
1239
1240- exec is now a function.
1241
1242- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001243
Neal Norwitz4886cc32006-08-21 17:06:07 +00001244- Classic classes are a thing of the past. All classes are new style.
1245
1246- Exceptions *must* derive from BaseException.
1247
1248- Integer division always returns a float. The -Q option is no more.
1249 All the following are gone:
1250 * PyNumber_Divide and PyNumber_InPlaceDivide
1251 * __div__, __rdiv__, and __idiv__
1252 * nb_divide, nb_inplace_divide
1253 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1254 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1255 if we want to re-use __div__ and friends. If we do, it will make
1256 it harder to write code for both 2.x and 3.x.)
1257
1258- 'as' and 'with' are keywords.
1259
1260- Absolute import is the default behavior for 'import foo' etc.
1261
Georg Brandl52b92cc2008-05-25 09:43:03 +00001262- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001263
Georg Brandl52b92cc2008-05-25 09:43:03 +00001264- Removed these Python builtins: apply(), callable(), coerce(),
1265 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001266
Georg Brandl52b92cc2008-05-25 09:43:03 +00001267- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001268
Georg Brandl52b92cc2008-05-25 09:43:03 +00001269- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001270
1271- Remove C API support for restricted execution.
1272
Guido van Rossumcf1be882007-08-30 22:07:17 +00001273- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001274 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001275 sequences of unequal length -- it now stops after the shortest one
1276 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001277
Georg Brandl52b92cc2008-05-25 09:43:03 +00001278- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001279
1280- Added class decorators per PEP 3129.
1281
1282
1283Extension Modules
1284-----------------
1285
Georg Brandl52b92cc2008-05-25 09:43:03 +00001286- Removed the imageop module. Obsolete long with its unit tests
1287 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001288
Georg Brandl52b92cc2008-05-25 09:43:03 +00001289- Removed these attributes from the operator module: div, idiv,
1290 __div__, __idiv__, isCallable, sequenceIncludes.
1291
1292- Removed these attributes from the sys module: exc_clear(), exc_type,
1293 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001294
1295
1296Library
1297-------
1298
Georg Brandl52b92cc2008-05-25 09:43:03 +00001299- Removed the compiler package. Use of the _ast module and (an
1300 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001301
Georg Brandl52b92cc2008-05-25 09:43:03 +00001302- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1303 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1304 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001305
Georg Brandl52b92cc2008-05-25 09:43:03 +00001306- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001307
Georg Brandl52b92cc2008-05-25 09:43:03 +00001308- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1309 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1310 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001311
Georg Brandl52b92cc2008-05-25 09:43:03 +00001312- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001313
Georg Brandl52b92cc2008-05-25 09:43:03 +00001314- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001315 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001316
Georg Brandl52b92cc2008-05-25 09:43:03 +00001317- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001318
Georg Brandl52b92cc2008-05-25 09:43:03 +00001319- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001320
1321- Patch #1680961: atexit has been reimplemented in C.
1322
Walter Dörwald41980ca2007-08-16 21:55:45 +00001323- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1324
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001325Build
1326-----
1327
1328C API
1329-----
1330
Georg Brandl52b92cc2008-05-25 09:43:03 +00001331- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001332
Georg Brandl52b92cc2008-05-25 09:43:03 +00001333- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1334 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001335
Georg Brandl52b92cc2008-05-25 09:43:03 +00001336- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001337
Georg Brandl52b92cc2008-05-25 09:43:03 +00001338- Removed these macros: staticforward, statichere, PyArg_GetInt,
1339 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001340
Georg Brandl52b92cc2008-05-25 09:43:03 +00001341- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1342 intintobjargproc, getreadbufferproc, getwritebufferproc,
1343 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001344
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001345Tests
1346-----
1347
Brett Cannone7a30f72008-03-03 03:36:27 +00001348- Removed test.testall as test.regrtest replaces it.
1349
Brett Cannonced04e02005-02-13 22:53:22 +00001350Documentation
1351-------------
1352
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001353Mac
1354---
1355
Georg Brandl52b92cc2008-05-25 09:43:03 +00001356- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001357
Guido van Rossum845702c2007-08-30 18:44:53 +00001358Platforms
1359---------
1360
1361- Support for BeOS and AtheOS was removed (according to PEP 11).
1362
1363- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1364
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001365Tools/Demos
1366-----------
1367
Georg Brandl52b92cc2008-05-25 09:43:03 +00001368
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001369**(For information about older versions, consult the HISTORY file.)**