blob: 4872be23a04633404f86e0525fb7580d53cb8223 [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
Amaury Forgeot d'Arcbed17102008-11-29 01:48:47 +000027- IDLE would print a "Unhandled server exception!" message when internal
28 debugging is enabled.
29
Amaury Forgeot d'Arc47c2b602008-11-28 23:28:42 +000030- Issue #4455: IDLE failed to display the windows list when two windows have
31 the same title.
32
Christian Heimes94e07722008-11-28 11:05:17 +000033- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
34 exception.
35
Thomas Heller60e5f5e2008-11-26 18:40:58 +000036- Issue #4433: Fixed an access violation when garbage collecting
37 _ctypes.COMError instances.
38
Thomas Heller71fb5132008-11-26 08:45:36 +000039- Issue #4429: Fixed UnicodeDecodeError in ctypes.
40
Christian Heimes3e7e0692008-11-25 21:21:32 +000041- Issue #4373: Corrected a potential reference leak in the pickle module and
42 silenced a false positive ref leak in distutils.tests.test_build_ext.
Amaury Forgeot d'Arc5f952572008-11-25 21:11:54 +000043
Brett Cannon2b5d6eb2008-11-24 21:09:58 +000044- Issue #4382: dbm.dumb did not specify the expected file encoding for opened
45 files.
46
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +000047- Issue #4383: When IDLE cannot make the connection to its subprocess, it would
48 fail to properly display the error message.
49
Martin v. Löwis841edad2008-11-30 10:36:49 +000050Build
51-----
52
53- Issue #4407: Fix source file that caused the compileall step in Windows installer
54 to fail.
55
Brett Cannon7317c1e2008-11-25 19:19:17 +000056Docs
57----
58
Christian Heimes7ca7cb42008-11-28 11:24:16 +000059- Issue #4449: Fixed multiprocessing examples
60
Brett Cannon7317c1e2008-11-25 19:19:17 +000061- Issue #3799: Document that dbm.gnu and dbm.ndbm will accept string arguments
62 for keys and values which will be converted to bytes before committal.
63
Barry Warsawd8ccd1c2008-11-21 15:13:37 +000064
65What's New in Python 3.0 release candidate 3?
66=============================================
Barry Warsawa7c37302008-11-07 03:46:33 +000067
Barry Warsaw43baef42008-11-21 01:18:21 +000068*Release date: 20-Nov-2008*
Barry Warsawa7c37302008-11-07 03:46:33 +000069
Benjamin Peterson6570d072008-11-07 03:51:42 +000070
Barry Warsawa7c37302008-11-07 03:46:33 +000071Core and Builtins
72-----------------
73
Benjamin Peterson4f39d222008-11-18 22:37:15 +000074- Issue #4349: sys.path included a non-existent platform directory because of a
75 faulty Makefile.
76
Martin v. Löwis276c3712008-11-17 16:22:11 +000077- Issue #3327: Don't overallocate in the modules_by_index list.
78
Raymond Hettinger7d99f092008-11-16 11:44:54 +000079- Issue #1721812: Binary set operations and copy() returned the input type
Brett Cannon58425d32008-11-21 00:17:53 +000080 instead of the appropriate base type. This was incorrect because set
Raymond Hettinger7d99f092008-11-16 11:44:54 +000081 subclasses would be created without their __init__() method being called.
82 The corrected behavior brings sets into line with lists and dicts.
83
Mark Dickinson4a1f5932008-11-12 23:23:36 +000084- Issue #4296: Fix PyObject_RichCompareBool so that "x in [x]" evaluates to
85 True, even when x doesn't compare equal to itself. This was a regression
86 from 2.6.
87
Amaury Forgeot d'Arc9a5499b2008-11-11 23:04:59 +000088- Issue #3705: Command-line arguments were not correctly decoded when the
89 terminal does not use UTF8.
90
Barry Warsawa7c37302008-11-07 03:46:33 +000091Library
92-------
93
Amaury Forgeot d'Arcb0c29162008-11-22 22:18:04 +000094- Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if
95 the ctypes module is not present.
96
Benjamin Peterson44309e62008-11-22 00:41:45 +000097- FileIO's mode attribute now always includes ``"b"``.
98
Brett Cannon58425d32008-11-21 00:17:53 +000099- Issue #3799: Fix dbm.dumb to accept strings as well as bytes for keys. String
100 keys are now written out in UTF-8.
101
Amaury Forgeot d'Arc836b6702008-11-20 23:53:46 +0000102- Issue #4338: Fix distutils upload command.
103
Martin v. Löwis2d1ca2d2008-11-20 16:21:55 +0000104- Issue #4354: Fix distutils register command.
105
Martin v. Löwis22d297b2008-11-19 09:14:30 +0000106- Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
107
Benjamin Peterson3d4ca742008-11-12 21:39:01 +0000108- Issue #4307: The named tuple that ``inspect.getfullargspec()`` returns now
109 uses ``kwonlydefaults`` instead of ``kwdefaults``.
110
Amaury Forgeot d'Arc3e4e72f2008-11-11 20:05:06 +0000111- Issue #4298: Fix a segfault when pickle.loads is passed a ill-formed input.
112
113- Issue #4283: Fix a left-over "iteritems" call in distutils.
Georg Brandlda066062008-11-08 15:15:57 +0000114
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000115Build
116-----
117
Martin v. Löwis45a6b9f2008-11-30 11:12:00 +0000118- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
119
Martin v. Löwisa632a752008-11-19 13:55:07 +0000120- Issue #4289: Remove Cancel button from AdvancedDlg.
121
Martin v. Löwisbfda5442008-11-07 18:54:51 +0000122- Issue #1656675: Register a drop handler for .py* files on Windows.
123
Benjamin Peterson06fd5f82008-11-08 17:24:34 +0000124Tools/Demos
125-----------
126
127- Demos of the socketserver module now work with Python 3.
128
Barry Warsawa7c37302008-11-07 03:46:33 +0000129
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000130What's New in Python 3.0 release candidate 2
131============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000132
Barry Warsaw1f0e67e2008-11-06 03:29:32 +0000133*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000134
135Core and Builtins
136-----------------
137
Benjamin Petersond968e272008-11-05 22:48:33 +0000138- Issue #4211: The __path__ attribute of frozen packages is now a list instead
139 of a string as required by PEP 302.
140
Benjamin Peterson93ef79c2008-11-05 22:49:09 +0000141- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +0000142
Christian Heimes933238a2008-11-05 19:44:21 +0000143- Issue #3714: Fixed nntplib by using bytes where appropriate.
144
Christian Heimesfb5faf02008-11-05 19:39:50 +0000145- Issue #1210: Fixed imaplib and its documentation.
146
Christian Heimesecc42a22008-11-05 19:30:32 +0000147- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
148 method on file objects with closefd=False. The file descriptor is still
149 kept open but the file object behaves like a closed file. The ``FileIO``
150 object also got a new readonly attribute ``closefd``.
151
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000152- Issue #3626: On cygwin, starting python with a non-existent script name
153 would not display anything if the file name is only 1 character long.
154
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +0000155- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
156 method does not return iterators for the 4th and 5th items.
157
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +0000158- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +0000159
Christian Heimes5833a2f2008-10-30 21:40:04 +0000160- Issue #4213: The file system encoding is now normalized by the
161 codec subsystem, for example UTF-8 is turned into utf-8.
162
Christian Heimes9c94ba42008-10-30 21:34:02 +0000163- Issue #4200: Changed the atexit module to store its state in its
164 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
165
Christian Heimesfec925b2008-10-30 21:22:55 +0000166- Issue #4237: io.FileIO() was raising invalid warnings caused by
167 insufficient initialization of PyFileIOObject struct members.
168
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +0000169- Issue #4170: Pickling a collections.defaultdict object would crash the
170 interpreter.
171
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +0000172- Issue #4146: Compilation on OpenBSD has been restored.
173
Brett Cannonda780432008-10-17 03:38:50 +0000174- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
175
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +0000176- Issues #2384 and #3975: Tracebacks were not correctly printed when the
177 source file contains a ``coding:`` header: the wrong line was displayed, and
178 the encoding was not respected.
179
Martin v. Löwis4e0630c2008-10-07 13:16:28 +0000180- Issue #3740: Null-initialize module state.
181
Benjamin Peterson60320cb2008-09-26 21:49:22 +0000182- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
183
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +0000184- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
185 contains non-ascii characters.
186
Martin v. Löwis6fea2332008-09-25 04:15:27 +0000187- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
188
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000189Library
190-------
191
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +0000192- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
193 to call the base __init__ method.
194
195- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +0000196
Martin v. Löwis33b64502008-10-15 05:58:17 +0000197- Issue #4072: Restore build_py_2to3.
198
Martin v. Löwisd8506df2008-10-06 15:19:21 +0000199- Issue #4014: Don't claim that Python has an Alpha release status, in addition
200 to claiming it is Mature.
201
Martin v. Löwis04dc25c2008-10-03 16:09:28 +0000202- Issue #3187: Add sys.setfilesystemencoding.
203
Guido van Rossumf0af3e32008-10-02 18:55:37 +0000204- Issue #3187: Better support for "undecodable" filenames. Code by Victor
205 Stinner, with small tweaks by GvR.
206
Martin v. Löwis601149b2008-09-29 22:19:08 +0000207- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
208 true singleton object.
209
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +0000210- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
211
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +0000212- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
213 raise a TypeError: "'tuple' object is not callable" instead of the expected
214 dbm.error.
215
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +0000216- Bug #3884: Make the turtle module toplevel again.
217
Thomas Heller1308c262008-09-24 19:01:29 +0000218- Issue #3547: Fixed ctypes structures bitfields of varying integer
219 sizes.
220
Gerhard Häring6117f422008-09-22 06:04:51 +0000221Extension Modules
222-----------------
223
224- Issue #3659: Subclasses of str didn't work as SQL parameters.
225
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000226Build
227-----
228
Martin v. Löwis900646e2008-11-06 17:30:03 +0000229- Issue #4120: Exclude manifest from extension modules in VS2008.
230
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000231- Issue #4091: Install pythonxy.dll in system32 again.
232
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000233- Issue #4018: Disable "for me" installations on Vista.
234
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000235- Issue #4204: Fixed module build errors on FreeBSD 4.
236
Martin v. Löwis33b64502008-10-15 05:58:17 +0000237Tools/Demos
238-----------
239
Martin v. Löwis869bad92008-10-17 15:54:44 +0000240- Issue #3717: Fix Demo/embed/demo.c.
241
Martin v. Löwis33b64502008-10-15 05:58:17 +0000242- Issue #4072: Add a distutils demo for build_py_2to3.
243
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000244
Barry Warsaw8509df72008-08-21 03:02:47 +0000245What's New in Python 3.0 release candidate 1
246============================================
247
Barry Warsawb8854802008-09-18 03:00:28 +0000248*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000249
250Core and Builtins
251-----------------
252
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000253- Issue #3827: memoryview lost its size attribute in favor of using len(view).
254
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000255- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
256
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000257- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000258 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
259 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000260
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000261- Issue #3279: Importing site at interpreter was failing silently because the
262 site module uses the open builtin which was not initialized at the time.
263
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000264- Issue #3660: Corrected a reference leak in str.encode() when the encoder
265 does not return a bytes object.
266
267- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000268 error conditions.
269
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000270- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000271 tokenized by either a file path or file pointer for the benefit of
272 PyTokenizer_FindEncoding().
273
Antoine Pitroufff95302008-09-03 18:58:51 +0000274- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
275 these systems, the mbstowcs() function is slightly buggy and must be
276 replaced with strlen() for the purpose of counting of number of wide
277 characters needed to represent the multi-byte character string.
278
Antoine Pitrou658fad82008-09-03 18:34:34 +0000279- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
280 could be easily encountered under Windows in debug mode when exercising
281 the recursion limit checking code, due to bogus handling of recursion
282 limit when USE_STACKCHEK was enabled.
283
Brett Cannon54bd41d2008-09-02 04:01:42 +0000284- Issue 3639: The _warnings module could segfault the interpreter when
285 unexpected types were passed in as arguments.
286
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000287- Issue #3712: The memoryview object had a reference leak and didn't support
288 cyclic garbage collection.
289
Antoine Pitrouf71995782008-08-29 18:37:05 +0000290- Issue #3668: Fix a memory leak with the "s*" argument parser in
291 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
292 was correctly parsed but parsing of subsequent arguments failed.
293
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000294- Issue #3611: An exception __context__ could be cleared in a complex pattern
295 involving a __del__ method re-raising an exception.
296
Antoine Pitrouec569b72008-08-26 22:40:48 +0000297- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
298 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
299 mechanism. In the process, fix a bug where isinstance() and issubclass(),
300 when given a tuple of classes as second argument, were looking up
301 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
302 type object.
303
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000304- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
305
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000306- Issue #3651: Fix various memory leaks when using the buffer
307 interface, or when the "s#" code of PyArg_ParseTuple is given a
308 bytes object.
309
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000310- Issue #3657: Fix uninitialized memory read when pickling longs.
311 Found by valgrind.
312
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000313- Apply security patches from Apple.
314
Neal Norwitz2f99b242008-08-24 05:48:10 +0000315- Fix crashes on memory allocation failure found with failmalloc.
316
317- Fix memory leaks found with valgrind and update suppressions file.
318
319- Fix compiler warnings in opt mode which would lead to invalid memory reads.
320
321- Fix problem using wrong name in decimal module reported by pychecker.
322
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000323- Issue #3650: Fixed a reference leak in bytes.split('x').
324
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000325- bytes(o) now tries to use o.__bytes__() before using fallbacks.
326
Gregory P. Smith207f2112008-09-07 06:29:10 +0000327- Issue #1204: The configure script now tests for additional libraries
328 that may be required when linking against readline. This fixes issues
329 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
330
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000331C API
332-----
333
334- PyObject_Bytes and PyBytes_FromObject were added.
335
Barry Warsaw8509df72008-08-21 03:02:47 +0000336Library
337-------
338
Guido van Rossum698280d2008-09-10 17:44:35 +0000339- Issue #3756: make re.escape() handle bytes as well as str.
340
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000341- Issue #3800: fix filter() related bug in formatter.py.
342
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000343- Issue #874900: fix behaviour of threading module after a fork.
344
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000345- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
346
347- Issue #3776: Deprecate the bsddb package for removal in 3.0.
348
349- Issue #3762: platform.architecture() fails if python is lanched via
350 its symbolic link.
351
Antoine Pitroud79dc622008-09-05 00:03:33 +0000352- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
353
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000354- Issue #3160: the "bdist_wininst" distutils command didn't work.
355
Guilherme Polob212b752008-09-04 11:21:31 +0000356- Issue #1658: tkinter changes dict size during iteration in both
357 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
358
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000359- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000360 It is now maintained outside of the standard library at
361 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000362
Facundo Batistac469d4c2008-09-03 22:49:01 +0000363- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
364 to the urlparse one. Added a DeprecationWarning in the old module, it
365 will be deprecated in the future.
366
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000367- Issue #3719: platform.architecture() fails if there are spaces in the
368 path to the Python binary.
369
Brett Cannonec92e182008-09-02 02:46:59 +0000370- Issue 3602: As part of the merge of r66135, make the parameters on
371 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
372
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000373- The deprecation warnings for the camelCase threading API names were removed.
374
Jesse Noller338f5782008-09-03 18:22:19 +0000375- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
376 SEM_VALUE_MAX.
377
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000378Extension Modules
379-----------------
380
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000381- Issue #3782: os.write() must not accept unicode strings.
382
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000383- Issue #2975: When compiling several extension modules with Visual Studio 2008
384 from the same python interpreter, some environment variables would grow
385 without limit.
386
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000387- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
388 exploitation of poor argument checking.
389
Jesus Cea6ba33292008-08-31 14:12:11 +0000390- bsddb code updated to version 4.7.3pre2. This code is the same than
391 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
392 The Python code is automatically translated using "2to3". Please, do not
393 update this code in Python 3.0 by hand. Update the 2.6 one and then
394 do "2to3".
395
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000396- The _bytesio and _stringio modules are now compiled into the python binary.
397
Gregory P. Smith693fc462008-09-06 20:13:06 +0000398- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
399 mutable bytearray objects where they should have been using immutable bytes.
400
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000401- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
402 return bytes objects instead of bytearray objects.
403
Gregory P. Smith693fc462008-09-06 20:13:06 +0000404
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000405Tools/Demos
406-----------
407
408- Fix Misc/gdbinit so it works.
409
Barry Warsaw8509df72008-08-21 03:02:47 +0000410
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000411Build
412-----
413
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000414- Issue #3812: Failed to build python if configure --without-threads.
415
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000416- Issue #3791: Remove the bsddb module from the Windows installer, and the
417 core bsddb library from the Windows build files.
418
419
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000420What's new in Python 3.0b3?
421===========================
422
Barry Warsaw57c10582008-08-21 02:39:51 +0000423*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000424
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000425Core and Builtins
426-----------------
427
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000428- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
429 arguments.
430
Antoine Pitrou616d2852008-08-19 22:09:34 +0000431- Issue #2394: implement more of the memoryview API, with the caveat that
432 only one-dimensional contiguous buffers are supported and exercised right
433 now. Slicing, slice assignment and comparison (equality and inequality)
434 have been added. Also, the tolist() method has been implemented, but only
435 for byte buffers. Endly, the API has been updated to return bytes objects
436 wherever it used to return bytearrays.
437
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000438- Issue #3560: clean up the new C PyMemoryView API so that naming is
439 internally consistent; add macros PyMemoryView_GET_BASE() and
440 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
441 without relying on a particular implementation; remove the ill-named
442 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
443
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000444- ctypes function pointers that are COM methods have a boolean True
445 value again.
446
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000447- Issue #1819: function calls with several named parameters are now on
448 average 35% faster (as measured by pybench).
449
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000450- The undocumented C APIs PyUnicode_AsString() and
451 PyUnicode_AsStringAndSize() were made private to the interpreter, in
452 order to be able to refine their interfaces for Python 3.1.
453
454 If you need to access the UTF-8 representation of a Unicode object
455 as bytes string, please use PyUnicode_AsUTF8String() instead.
456
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000457- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
458 to Python 3.0's stricter semantics which allow to avoid successive
459 reallocations of the result string (this also affects str.join()).
460
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000461
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000462Library
463-------
464
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000465- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
466 a build problem on MacOS with CJK locales. It adds four temporary
467 mappings to existing legacy codecs that are virtually compatible
468 with Mac encodings. They will be replaced by codecs correctly
469 implemented in 3.1.
470
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000471- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
472 "global name 'header' is not defined".
473
Antoine Pitroufd036452008-08-19 17:56:33 +0000474- Issue #2834: update the regular expression library to match the unicode
475 standards of py3k. In other words, mixing bytes and unicode strings
476 (be it as pattern, search string or replacement string) raises a TypeError.
477 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
478 and can be disabled by specifying a new re.ASCII flag; as for bytes
479 patterns, ASCII matching is the only option and trying to specify re.UNICODE
480 for such patterns raises a ValueError.
481
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000482- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
483 Code contributed by Matt Giuca. quote() now encodes the input
484 before quoting, unquote() decodes after unquoting. There are
485 new arguments to change the encoding and errors settings.
486 There are also new APIs to skip the encode/decode steps.
487 [un]quote_plus() are also affected.
488
Nick Coghlan36f49522008-08-18 12:31:52 +0000489- Issue #2235: numbers.Number now blocks inheritance of the default id()
490 based hash because that hash mechanism is not correct for numeric types.
491 All concrete numeric types that inherit from Number (rather than just
492 registering with it) must explicitly provide a hash implementation in
493 order for their instances to be hashable.
494
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000495- Issue #2676: in the email package, content-type parsing was hanging on
496 pathological input because of quadratic or exponential behaviour of a
497 regular expression.
498
Antoine Pitrou87695762008-08-14 22:44:29 +0000499- Issue #3476: binary buffered reading through the new "io" library is now
500 thread-safe.
501
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000502- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
503 menu entries were not deleted.
504
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000505- Remove the TarFileCompat class from tarfile.py.
506
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000507- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
508 accepts the same parameters. It just checks that its first argument is an
509 integer.
510
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000511- Issue #3394: zipfile.writestr sets external attributes when passed a
512 file name rather than a ZipInfo instance, so files are extracted with
513 mode 0600 rather than 000 under Unix.
514
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000515- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
516 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000517
Martin v. Löwis371bb502008-08-16 13:02:57 +0000518Extension Modules
519-----------------
520
521- Bug #3542: Support Unicode strings in _msi module.
522
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000523What's new in Python 3.0b2?
524===========================
525
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000526*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000527
528Core and Builtins
529-----------------
530
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000531- Issue #3008: the float type has a new instance method 'float.hex'
532 and a new class method 'float.fromhex' to convert floating-point
533 numbers to and from hexadecimal strings, respectively.
534
Eric Smithd68af8f2008-07-16 00:15:35 +0000535- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
536 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
537
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000538- Issue #3280: like chr(), the "%c" format now accepts unicode code points
539 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
540 "narrow Unicode" builds, the result is a string of 2 code units, forming a
541 UTF-16 surrogate pair.
542
Georg Brandld52429f2008-07-04 15:55:02 +0000543- Issue #3282: str.isprintable() should return False for undefined
544 Unicode characters.
545
Martin v. Löwis029656f2008-06-30 04:06:08 +0000546- Issue #3236: Return small longs from PyLong_FromString.
547
Benjamin Petersone6528212008-07-15 15:32:09 +0000548- Exception tracebacks now support exception chaining.
549
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000550Library
551-------
552
Brett Cannonc2542e92008-07-25 18:19:20 +0000553- Removed the sunaudio module. Use sunau instead.
554
Thomas Heller47bc8092008-08-19 06:38:12 +0000555- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
556 api functions without holding the GIL, which could lead to a fatal
557 error when they failed.
558
559- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
560
Georg Brandl30704ea02008-07-23 15:07:12 +0000561- Removed "ast" function aliases from the parser module.
562
Thomas Heller15383a02008-07-15 19:46:52 +0000563- Issue #3313: Fixed a crash when a failed dlopen() call does not set
564 a valid dlerror() message.
565
Thomas Heller0261e1e2008-07-15 17:25:07 +0000566- Issue #3258: Fixed a crash when a ctypes POINTER type to an
567 incomplete structure was created.
568
Georg Brandl1abcbf82008-07-01 19:28:43 +0000569- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
570 argument now must be a bytes object in any case.
571
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000572- Issue #3145: help("modules whatever") failed when trying to load the source
573 code of every single module of the standard library, including invalid files
574 used in the test suite.
575
Georg Brandlbded4d32008-07-17 18:15:35 +0000576- The gettext library now consistently uses Unicode strings for message ids
577 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000578
Benjamin Petersone6528212008-07-15 15:32:09 +0000579- The traceback module has been expanded to handle chained exceptions.
580
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000581C API
582-----
583
584- Issue #3247: the function Py_FindMethod was removed. Modern types should
585 use the tp_methods slot instead.
586
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000587Tools/Demos
588-----------
589
Georg Brandl336341f2008-07-01 20:21:28 +0000590- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000591
Georg Brandl336341f2008-07-01 20:21:28 +0000592- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000593
594
Brett Cannon0d71ee72008-05-08 18:13:40 +0000595What's new in Python 3.0b1?
596===========================
597
Barry Warsawc1e689e2008-06-19 00:35:43 +0000598*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000599
600Core and Builtins
601-----------------
602
Brett Cannondb734912008-06-27 00:52:15 +0000603- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
604 argument being anything other than a dict or None. Also fixed a bug in error
605 handling when 'message' and 'category' were both set to None, triggering a
606 bus error.
607
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000608- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
609 holds the last (strong) reference to its referent.
610
Georg Brandl559e5d72008-06-11 18:37:52 +0000611- Issue #2630: implement PEP 3138. repr() now returns printable
612 Unicode characters unescaped, to get an ASCII-only representation
613 of an object use ascii().
614
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000615- Issue #1342: On windows, Python could not start when installed in a
616 directory with non-ascii characters.
617
Martin v. Löwis1a214512008-06-11 05:26:20 +0000618- Implement PEP 3121: new module initialization and finalization API.
619
Georg Brandle1b5ac62008-06-04 13:06:58 +0000620- Removed the already-defunct ``-t`` option.
621
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000622- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
623 unmarshalling many code objects, which happens when importing a
624 large .pyc file (~1000 functions).
625
Georg Brandl52b92cc2008-05-25 09:43:03 +0000626- Issue #2963: fix merging oversight that disabled method cache for
627 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000628
Georg Brandlc9b09532008-05-25 09:24:38 +0000629- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
630
Georg Brandl52b92cc2008-05-25 09:43:03 +0000631- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000632
Georg Brandl52b92cc2008-05-25 09:43:03 +0000633- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
634 code now allows any unicode string and returns a utf-8 encoded
635 buffer, just like the "s#" code already does. The "z" code was
636 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000637
Georg Brandl52b92cc2008-05-25 09:43:03 +0000638- Issue #2863: generators now have a ``gen.__name__`` attribute that
639 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
640 ``func.func_code.co_name``. The repr() of a generator now also
641 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000642
643- Issue #2831: enumerate() now has a ``start`` argument.
644
Georg Brandl52b92cc2008-05-25 09:43:03 +0000645- Issue #2801: fix bug in the float.is_integer method where a
646 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000647
Georg Brandl52b92cc2008-05-25 09:43:03 +0000648- The ``--with-toolbox-glue`` option (and the associated
649 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000650
Georg Brandl52b92cc2008-05-25 09:43:03 +0000651- Issue #2196: hasattr() now lets exceptions which do not inherit
652 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
653 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000654
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000655- #3021 Exception reraising sematics have been significantly improved. However,
656 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
657 code anymore.
658
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000659- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
660 removed.
661
Brett Cannon0d71ee72008-05-08 18:13:40 +0000662Extension Modules
663-----------------
664
Georg Brandl38feaf02008-05-25 07:45:51 +0000665- Renamed ``_winreg`` module to ``winreg``.
666
Georg Brandl52b92cc2008-05-25 09:43:03 +0000667- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
668 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000669
670- Support for Windows 9x has been removed from the winsound module.
671
Georg Brandl52b92cc2008-05-25 09:43:03 +0000672- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000673
Brett Cannon0d71ee72008-05-08 18:13:40 +0000674Library
675-------
676
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000677- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
678 symtable.Symbol have been removed.
679
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000680- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
681
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000682- a new ``urllib`` package was created. It consists of code from
683 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
684 modules have all been removed. The new package has five submodules:
685 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
686 ``urllib.error``, and ``urllib.robotparser``. The
687 ``urllib.request.urlopen()`` function uses the url opener from
688 ``urllib2``. (Note that the unittests have not been renamed for the
689 beta, but they will be renamed in the future.)
690
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000691- rfc822 has been removed in favor of the email package.
692
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000693- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000694
Barry Warsawf5019422008-06-12 02:42:00 +0000695- Patch #2849: Remove use of rfc822 module from standard library.
696
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000697- Added C optimized implementation of io.StringIO.
698
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000699- The ``pickle`` module is now automatically use an optimized C
700 implementation of Pickler and Unpickler when available. The
701 ``cPickle`` module is no longer needed.
702
Georg Brandl877b10a2008-06-01 21:25:55 +0000703- Removed the ``htmllib`` and ``sgmllib`` modules.
704
Georg Brandl61013952008-05-28 15:56:30 +0000705- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
706 been removed from ``http.cookies``.
707
Brett Cannona23810f2008-05-26 19:04:21 +0000708- The ``commands`` module has been removed. Its getoutput() and
709 getstatusoutput() functions have been moved to the ``subprocess`` module.
710
Georg Brandl3d5c4252008-05-26 18:03:26 +0000711- The ``http`` package was created; it contains the old ``httplib``
712 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
713 as ``http.cookiejar``, and the content of the three ``HTTPServer``
714 modules as ``http.server``.
715
Georg Brandl38eceaa2008-05-26 11:14:17 +0000716- The ``xmlrpc`` package was created; it contains the old
717 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
718 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000719 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000720
721- The ``dbm`` package was created, containing the old modules
722 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
723 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
724 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
725 as submodules.
726
Georg Brandl52b92cc2008-05-25 09:43:03 +0000727- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000728
Georg Brandl52b92cc2008-05-25 09:43:03 +0000729- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000730
Georg Brandl52b92cc2008-05-25 09:43:03 +0000731- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000732
Georg Brandl52b92cc2008-05-25 09:43:03 +0000733- Issue #2250: Exceptions raised during evaluation of names in
734 rlcompleter's ``Completer.complete()`` method are now caught and
735 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000736
Georg Brandl52b92cc2008-05-25 09:43:03 +0000737- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
738 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000739
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000740- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
741 large to fit in a C long. ldexp(x, n) now returns a zero (with
742 suitable sign) if n is large and negative; previously, it raised
743 OverflowError.
744
Georg Brandl52b92cc2008-05-25 09:43:03 +0000745- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000746
Georg Brandl52b92cc2008-05-25 09:43:03 +0000747- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000748
Georg Brandl52b92cc2008-05-25 09:43:03 +0000749- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000750
Georg Brandl52b92cc2008-05-25 09:43:03 +0000751- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000752
Georg Brandl52b92cc2008-05-25 09:43:03 +0000753- Fixed the ``__all__`` setting on ``collections`` to include
754 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000755
Brett Cannoncf3520c2008-05-11 22:47:58 +0000756- The sre module has been removed.
757
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000758- The Queue module has been renamed to queue.
759
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000760- The copy_reg module has been renamed to copyreg.
761
Brett Cannond8b61ee2008-05-11 03:00:26 +0000762- The mhlib module has been removed.
763
Brett Cannonbd474422008-05-10 22:42:14 +0000764- The ihooks module has been removed.
765
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000766- The fpformat module has been removed.
767
Brett Cannonf4fd9932008-05-10 21:11:46 +0000768- The dircache module has been removed.
769
Brett Cannond175b4c2008-05-10 03:19:54 +0000770- The Canvas module has been removed.
771
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000772- The Decimal module gained the magic methods __round__, __ceil__,
773 __floor__ and __trunc__, to give support for round, math.ceil,
774 math.floor and math.trunc.
775
Brett Cannon900ee3a2008-05-08 20:31:11 +0000776- The user module has been removed.
777
Brett Cannon34afe872008-05-08 20:31:44 +0000778- The mutex module has been removed.
779
Brett Cannon0d71ee72008-05-08 18:13:40 +0000780- The imputil module has been removed.
781
Georg Brandl52b92cc2008-05-25 09:43:03 +0000782- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000783
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000784- pdb gained the "until" command.
785
Georg Brandl52b92cc2008-05-25 09:43:03 +0000786- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000787
Georg Brandl32de7af2008-08-18 23:07:41 +0000788- The threading module API was renamed to be PEP 8 compliant. The
789 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000790
Georg Brandl294d5a92008-06-01 19:25:32 +0000791Tools/Demos
792-----------
793
794- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000795
Brett Cannon0d71ee72008-05-08 18:13:40 +0000796Build
797-----
798
799
Barry Warsaw66079cd2008-04-04 01:36:36 +0000800What's New in Python 3.0a5?
801===========================
802
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000803*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000804
805Core and Builtins
806-----------------
807
Georg Brandl52b92cc2008-05-25 09:43:03 +0000808- Fixed misbehaviour of PyLong_FromSsize_t on systems where
809 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000810
Georg Brandl52b92cc2008-05-25 09:43:03 +0000811- Issue #2221: Corrected a SystemError "error return without exception
812 set", when the code executed by exec() raises an exception, and
813 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000814
Georg Brandl52b92cc2008-05-25 09:43:03 +0000815- Bug #2565: The repr() of type objects now calls them 'class', not
816 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000817
Martin v. Löwis790465f2008-04-05 20:41:37 +0000818- The command line processing was converted to pass Unicode strings
819 through as unmodified as possible; as a consequence, the C API
820 related to command line arguments was changed to use wchar_t.
821
Georg Brandl52b92cc2008-05-25 09:43:03 +0000822- All backslashes in raw strings are interpreted literally. This
823 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000824
Barry Warsaw66079cd2008-04-04 01:36:36 +0000825Extension Modules
826-----------------
827
828Library
829-------
830
Georg Brandl52b92cc2008-05-25 09:43:03 +0000831- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000832
Thomas Hellere106dc32008-04-24 18:39:36 +0000833- Issue #2682: ctypes callback functions now longer contain a cyclic
834 reference to themselves.
835
Georg Brandl52b92cc2008-05-25 09:43:03 +0000836- Issue #2058: Remove the buf attribute and add __slots__ to the
837 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000838
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000839- Bug #2606: Avoid calling .sort() on a dict_keys object.
840
Thomas Hellerbff533b2008-04-04 19:53:14 +0000841- The bundled libffi copy is now in sync with the recently released
842 libffi3.0.5 version, apart from some small changes to
843 Modules/_ctypes/libffi/configure.ac.
844
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000845Build
846-----
847
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000848- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
849
Guido van Rossumdc21db32008-04-07 18:37:41 +0000850- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000851 accidentally overwriting a Python 2.x installation. Use "make
852 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000853
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000854- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
855 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000856
Georg Brandl52b92cc2008-05-25 09:43:03 +0000857
Barry Warsawa9d499d2008-03-01 18:38:07 +0000858What's New in Python 3.0a4?
859===========================
860
Barry Warsawbb5cd082008-04-02 23:33:27 +0000861*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000862
Martin v. Löwis25931462008-03-17 20:43:42 +0000863Core and Builtins
864-----------------
865
866- Bug #2301: Don't try decoding the source code into the original
867 encoding for syntax errors.
868
Martin v. Löwis92fab752008-03-08 10:40:41 +0000869Extension Modules
870-----------------
871
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000872- The dl module was removed, use the ctypes module instead.
873
Martin v. Löwis92fab752008-03-08 10:40:41 +0000874- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000875
Martin v. Löwis071ef772008-03-08 11:24:24 +0000876Library
877-------
878
Georg Brandl52b92cc2008-05-25 09:43:03 +0000879- The class distutils.commands.build_py.build_py_2to3 can be used as a
880 build_py replacement to automatically run 2to3 on modules that are
881 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000882
Guido van Rossumf4169812008-03-17 22:56:06 +0000883- A new pickle protocol (protocol 3) is added with explicit support
884 for bytes. This is the default protocol. It intentionally cannot
885 be unpickled by Python 2.x.
886
887- When a pickle written by Python 2.x contains an (8-bit) str
888 instance, this is now decoded to a (Unicode) str instance. The
889 encoding used to do this defaults to ASCII, but can be overridden
890 via two new keyword arguments to the Unpickler class. Previously
891 this would create bytes instances, which is usually wrong: str
892 instances are often used to pickle attribute names etc., and text is
893 more common than binary data anyway.
894
Martin v. Löwis071ef772008-03-08 11:24:24 +0000895- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000896 system doesn't support CODESET and LANG isn't set or doesn't allow
897 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000898
Georg Brandl52b92cc2008-05-25 09:43:03 +0000899- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
900 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000901
Georg Brandl52b92cc2008-05-25 09:43:03 +0000902- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
903 has been renamed tokenize and now works with bytes rather than
904 strings. A new detect_encoding function has been added for
905 determining source file encoding according to PEP-0263. Token
906 sequences returned by tokenize always start with an ENCODING token
907 which specifies the encoding used to decode the file. This token is
908 used to encode the output of untokenize back to bytes.
909
Barry Warsawa9d499d2008-03-01 18:38:07 +0000910
Christian Heimesbc873412007-12-08 22:11:32 +0000911What's New in Python 3.0a3?
912===========================
913
Barry Warsaw659fc422008-03-01 17:45:23 +0000914*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000915
916Core and Builtins
917-----------------
918
Georg Brandl52b92cc2008-05-25 09:43:03 +0000919- Issue #2282: io.TextIOWrapper was not overriding seekable() from
920 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000921
Georg Brandl52b92cc2008-05-25 09:43:03 +0000922- Issue #2115: Important speedup in setting __slot__ attributes. Also
923 prevent a possible crash: an Abstract Base Class would try to access
924 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000925
Georg Brandl52b92cc2008-05-25 09:43:03 +0000926- Fixed repr() and str() of complex numbers with infinity or nan as
927 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000928
Georg Brandl52b92cc2008-05-25 09:43:03 +0000929- Clear all free list during a gc.collect() of the highest generation
930 in order to allow pymalloc to free more arenas. Python may give back
931 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000932
Georg Brandl52b92cc2008-05-25 09:43:03 +0000933- Issue #2045: Fix an infinite recursion triggered when printing a
934 subclass of collections.defaultdict, if its default_factory is set
935 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000936
937- Fixed a minor memory leak in dictobject.c. The content of the free
938 list was not freed on interpreter shutdown.
939
Georg Brandl52b92cc2008-05-25 09:43:03 +0000940- Limit free list of method and builtin function objects to 256
941 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000942
Georg Brandl52b92cc2008-05-25 09:43:03 +0000943- Patch #1953: Added ``sys._compact_freelists()`` and the C API
944 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000945 to compact the internal free lists of pre-allocted ints and floats.
946
947- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000948 Python expected the return type int but the fork familie returns
949 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000950
Georg Brandl52b92cc2008-05-25 09:43:03 +0000951- Issue #1678380: Fix a bug that identifies 0j and -0j when they
952 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000953
Georg Brandl52b92cc2008-05-25 09:43:03 +0000954- Issue #2025: Added tuple.count() and tuple.index() methods to comply
955 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000956
Georg Brandl52b92cc2008-05-25 09:43:03 +0000957- Fixed multiple reinitialization of the Python interpreter. The small
958 int list in longobject.c has caused a seg fault during the third
959 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000960
Georg Brandl52b92cc2008-05-25 09:43:03 +0000961- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000962
Georg Brandl52b92cc2008-05-25 09:43:03 +0000963- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000964
Georg Brandl52b92cc2008-05-25 09:43:03 +0000965- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000966
Georg Brandl52b92cc2008-05-25 09:43:03 +0000967- map() no longer accepts None for the first argument. Use zip()
968 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000969
Facundo Batista2336bdd2008-01-19 19:12:01 +0000970- Issue #1769: Now int("- 1") is not allowed any more.
971
Georg Brandl52b92cc2008-05-25 09:43:03 +0000972- Object/longobject.c: long(float('nan')) raises an OverflowError
973 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000974
Georg Brandl52b92cc2008-05-25 09:43:03 +0000975- Issue #1762972: __file__ points to the source file instead of the
976 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000977
Guido van Rossumab078dd2008-01-06 00:09:11 +0000978- Issue #1393: object_richcompare() returns NotImplemented instead of
979 False if the objects aren't equal, to give the other side a chance.
980
Guido van Rossume239b002008-01-06 00:44:20 +0000981- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000982
Georg Brandl52b92cc2008-05-25 09:43:03 +0000983- Improve some exception messages when Windows fails to load an
984 extension module. Now we get for example '%1 is not a valid Win32
985 application' instead of 'error code 193'. Also use Unicode strings
986 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000987
Georg Brandl52b92cc2008-05-25 09:43:03 +0000988- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
989 Python C API has gained a new type *PyInstanceMethod_Type* and the
990 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
991 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000992
Georg Brandl52b92cc2008-05-25 09:43:03 +0000993- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
994 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
995 are now enough to print the corresponding list of objects considered
996 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000997
Georg Brandl52b92cc2008-05-25 09:43:03 +0000998- Issue #1573: Improper use of the keyword-only syntax makes the
999 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +00001000
Georg Brandl52b92cc2008-05-25 09:43:03 +00001001- Issue #1564: The set implementation should special-case PyUnicode
1002 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +00001003
Guido van Rossumea6775b2008-02-21 20:16:31 +00001004- Patch #1031213: Decode source line in SyntaxErrors back to its
1005 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +00001006
Christian Heimes09aaa882008-02-23 15:01:06 +00001007- inspect.getsource() includes the decorators again.
1008
Guido van Rossumea6775b2008-02-21 20:16:31 +00001009- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
1010 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +00001011
Georg Brandl52b92cc2008-05-25 09:43:03 +00001012- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
1013 the first chunk fed to the decoder started with a BOM, but was
1014 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +00001015
Christian Heimesbc873412007-12-08 22:11:32 +00001016Extension Modules
1017-----------------
1018
Georg Brandl52b92cc2008-05-25 09:43:03 +00001019- Code for itertools ifilter(), imap(), and izip() moved to bultins
1020 and renamed to filter(), map(), and zip(). Also, renamed
1021 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +00001022
Georg Brandl52b92cc2008-05-25 09:43:03 +00001023- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +00001024
Georg Brandl52b92cc2008-05-25 09:43:03 +00001025- Bug #2111: mmap segfaults when trying to write a block opened with
1026 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +00001027
Georg Brandl52b92cc2008-05-25 09:43:03 +00001028- Issue #2063: correct order of utime and stime in os.times() result
1029 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +00001030
Christian Heimesbc873412007-12-08 22:11:32 +00001031Library
1032-------
1033
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001034- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001035
Georg Brandl52b92cc2008-05-25 09:43:03 +00001036- Created new UserDict class in collections module. This one inherits
1037 from and complies with the MutableMapping ABC. Also, moved
1038 UserString and UserList to the collections module. The
1039 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +00001040
Guido van Rossumea6775b2008-02-21 20:16:31 +00001041- Removed UserDict.DictMixin. Replaced all its uses with
1042 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +00001043
Guido van Rossume239b002008-01-06 00:44:20 +00001044- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +00001045
Guido van Rossume239b002008-01-06 00:44:20 +00001046- Issue #1585: IDLE uses non-existent xrange() function.
1047
1048- Issue #1578: Problems in win_getpass.
1049
Georg Brandl52d168a2008-01-07 18:10:24 +00001050Build
1051-----
1052
Georg Brandl52b92cc2008-05-25 09:43:03 +00001053- Renamed --enable-unicode configure flag to --with-wide-unicode,
1054 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +00001055
Guido van Rossume239b002008-01-06 00:44:20 +00001056C API
1057-----
1058
1059- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
1060 Py_TYPE and Py_REFCNT.
1061
Georg Brandl52b92cc2008-05-25 09:43:03 +00001062- New API PyImport_ImportModuleNoBlock(), works like
1063 PyImport_ImportModule() but won't block on the import lock
1064 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +00001065
Christian Heimesbc873412007-12-08 22:11:32 +00001066
Fred Drake0e474a82007-10-11 18:01:43 +00001067What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +00001068===========================
Fred Drake0e474a82007-10-11 18:01:43 +00001069
Guido van Rossum99533a92007-12-06 05:07:41 +00001070*Release date: 07-Dec-2007*
1071
1072(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +00001073
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001074Core and Builtins
1075-----------------
1076
Brett Cannon37f7e6e2007-10-26 05:42:09 +00001077- str8 now has the same construction signature as bytes.
1078
Georg Brandl52b92cc2008-05-25 09:43:03 +00001079- Comparisons between str and str8 now return False/True for ==/!=.
1080 sqlite3 returns str8 when recreating on object from it's __conform__
1081 value. The struct module returns str8 for all string-related
1082 formats. This was true before this change, but becomes more
1083 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +00001084
Georg Brandl52b92cc2008-05-25 09:43:03 +00001085- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
1086 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001087
1088- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
1089
1090- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +00001091 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +00001092 `PyUnicode_DecodeFSDefault(char*)` was added.
1093
Georg Brandl52b92cc2008-05-25 09:43:03 +00001094- io.open() and _fileio.FileIO have grown a new argument closefd. A
1095 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +00001096
Georg Brandl52b92cc2008-05-25 09:43:03 +00001097- Added a new option -b to issues warnings (-bb for errors) about
1098 certain operations between bytes/buffer and str like str(b'') and
1099 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +00001100
Georg Brandl52b92cc2008-05-25 09:43:03 +00001101- The standards streams sys.stdin, stdout and stderr may be None when
1102 the when the C runtime library returns an invalid file descriptor
1103 for the streams (fileno(stdin) < 0). For now this happens only for
1104 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +00001105
Christian Heimesbce52be2007-11-17 19:08:41 +00001106- Added PCbuild9 directory for VS 2008.
1107
Georg Brandl52b92cc2008-05-25 09:43:03 +00001108- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
1109 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +00001110
Georg Brandl52b92cc2008-05-25 09:43:03 +00001111- Unbound methods are gone for good. ClassObject.method returns an
1112 ordinary function object, instance.method still returns a bound
1113 method object. The API of bound methods is cleaned up, too. The
1114 im_class attribute is removed and im_func + im_self are renamed to
1115 __func__ and __self__. The factory PyMethod_New takes only func and
1116 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +00001117
Georg Brandl52b92cc2008-05-25 09:43:03 +00001118- intobject.h is no longer included by Python.h. The remains were
1119 moved to longobject.h. It still exists to define several aliases
1120 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +00001121
Christian Heimesa37d4c62007-12-04 23:02:19 +00001122- Removed sys.maxint, use sys.maxsize instead.
1123
Fred Drake0e474a82007-10-11 18:01:43 +00001124Extension Modules
1125-----------------
1126
1127- The `hotshot` profiler has been removed; use `cProfile` instead.
1128
Brett Cannone9fd2312007-10-12 19:18:19 +00001129Library
1130-------
1131
Georg Brandl52b92cc2008-05-25 09:43:03 +00001132- When loading an external file using testfile(), the passed-in
1133 encoding argument was being ignored if __loader__ is defined and
1134 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001135
Georg Brandl52b92cc2008-05-25 09:43:03 +00001136- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1137 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001138
Christian Heimesc9543e42007-11-28 08:28:28 +00001139- Removed the 'new' module.
1140
Georg Brandl52b92cc2008-05-25 09:43:03 +00001141- Removed all types from the 'types' module that are easily accessable
1142 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001143
Georg Brandl52d168a2008-01-07 18:10:24 +00001144
Guido van Rossum4405cf32007-08-30 17:16:55 +00001145What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001146==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001147
Guido van Rossum4405cf32007-08-30 17:16:55 +00001148*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001149
1150Core and Builtins
1151-----------------
1152
Martin v. Löwis47383402007-08-15 07:32:56 +00001153- PEP 3131: Support non-ASCII identifiers.
1154
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001155- PEP 3120: Change default encoding to UTF-8.
1156
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001157- PEP 3123: Use proper C inheritance for PyObject.
1158
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001159- Removed the __oct__ and __hex__ special methods and added a bin()
1160 builtin function.
1161
Georg Brandl52b92cc2008-05-25 09:43:03 +00001162- PEP 3127: octal literals now start with "0o". Old-style octal
1163 literals are invalid. There are binary literals with a prefix of
1164 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001165
Guido van Rossume7ba4952007-06-06 23:52:48 +00001166- None, True, False are now keywords.
1167
Guido van Rossum29478ef2007-05-29 00:39:44 +00001168- PEP 3119: isinstance() and issubclass() can be overridden.
1169
Guido van Rossumebe3e162007-05-17 18:20:34 +00001170- Remove BaseException.message.
1171
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001172- Remove tuple parameter unpacking (PEP 3113).
1173
Georg Brandl52b92cc2008-05-25 09:43:03 +00001174- Remove the f_restricted attribute from frames. This naturally leads
1175 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001176
Georg Brandl52b92cc2008-05-25 09:43:03 +00001177- PEP 3132 was accepted. That means that you can do ``a, *b =
1178 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001179
Georg Brandl52b92cc2008-05-25 09:43:03 +00001180- range() now returns an iterator rather than a list. Floats are not
1181 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001182
Nick Coghlan650f0d02007-04-15 12:05:43 +00001183- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001184 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001185
Guido van Rossume27dc722007-03-27 22:37:34 +00001186- By default, != returns the opposite of ==, unless the latter returns
1187 NotImplemented.
1188
Georg Brandl52b92cc2008-05-25 09:43:03 +00001189- Patch #1680961: sys.exitfunc has been removed and replaced with a
1190 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001191
Georg Brandl801dd732007-03-18 20:18:31 +00001192- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001193 keyword arg in the class statement, which can now use the full
1194 syntax of a parameter list. Also, the metaclass can implement a
1195 __prepare__ function which will be called to create the dictionary
1196 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001197
Georg Brandl428f0642007-03-18 18:35:15 +00001198- The long-deprecated argument "pend" of PyFloat_FromString() has been
1199 removed.
1200
Georg Brandle32b4222007-03-10 22:13:27 +00001201- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001202 its argument, if it exists. If not, it will work like before. This
1203 allows customizing the output of dir() in the presence of a
1204 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001205
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001206- Removed support for __members__ and __methods__.
1207
Georg Brandle32b4222007-03-10 22:13:27 +00001208- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001209
Georg Brandle32b4222007-03-10 22:13:27 +00001210- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001211 functionality formerly known as raw_input(); the name raw_input() is
1212 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001213
Georg Brandl52b92cc2008-05-25 09:43:03 +00001214- Classes listed in an 'except' clause must inherit from
1215 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001216
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001217- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001218 and .keys(), .items(), .values() return dict views, which behave
1219 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001220
Guido van Rossum8b545362007-02-09 23:52:14 +00001221- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001222 'softspace' attribute of files is now gone (since print() doesn't
1223 use it). A side effect of this change is that you can get
1224 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001225
1226 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001227 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001228
1229 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001230
Brett Cannon398db8b2007-01-29 23:44:37 +00001231- PEP 3102: keyword-only arguments.
1232
Georg Brandl52b92cc2008-05-25 09:43:03 +00001233- Int/Long unification is complete. The 'long' built-in type and
1234 literals with trailing 'L' or 'l' have been removed. Performance
1235 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001236
1237- 'except E, V' must now be spelled as 'except E as V' and deletes V
1238 at the end of the except clause; V must be a simple name.
1239
Neal Norwitzc1505362006-12-28 06:47:50 +00001240- Added function annotations per PEP 3107.
1241
Georg Brandl52b92cc2008-05-25 09:43:03 +00001242- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001243
1244 >>> def f(x):
1245 ... def inc():
1246 ... nonlocal x
1247 ... x += 1
1248 ... return x
1249 ... return inc
1250 ...
1251 >>> inc = f(0)
1252 >>> inc()
1253 1
1254 >>> inc()
1255 2
1256
Georg Brandl66a796e2006-12-19 20:50:34 +00001257- Moved intern() to sys.intern().
1258
1259- exec is now a function.
1260
1261- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001262
Neal Norwitz4886cc32006-08-21 17:06:07 +00001263- Classic classes are a thing of the past. All classes are new style.
1264
1265- Exceptions *must* derive from BaseException.
1266
1267- Integer division always returns a float. The -Q option is no more.
1268 All the following are gone:
1269 * PyNumber_Divide and PyNumber_InPlaceDivide
1270 * __div__, __rdiv__, and __idiv__
1271 * nb_divide, nb_inplace_divide
1272 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1273 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1274 if we want to re-use __div__ and friends. If we do, it will make
1275 it harder to write code for both 2.x and 3.x.)
1276
1277- 'as' and 'with' are keywords.
1278
1279- Absolute import is the default behavior for 'import foo' etc.
1280
Georg Brandl52b92cc2008-05-25 09:43:03 +00001281- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001282
Georg Brandl52b92cc2008-05-25 09:43:03 +00001283- Removed these Python builtins: apply(), callable(), coerce(),
1284 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001285
Georg Brandl52b92cc2008-05-25 09:43:03 +00001286- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001287
Georg Brandl52b92cc2008-05-25 09:43:03 +00001288- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001289
1290- Remove C API support for restricted execution.
1291
Guido van Rossumcf1be882007-08-30 22:07:17 +00001292- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001293 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001294 sequences of unequal length -- it now stops after the shortest one
1295 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001296
Georg Brandl52b92cc2008-05-25 09:43:03 +00001297- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001298
1299- Added class decorators per PEP 3129.
1300
1301
1302Extension Modules
1303-----------------
1304
Georg Brandl52b92cc2008-05-25 09:43:03 +00001305- Removed the imageop module. Obsolete long with its unit tests
1306 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001307
Georg Brandl52b92cc2008-05-25 09:43:03 +00001308- Removed these attributes from the operator module: div, idiv,
1309 __div__, __idiv__, isCallable, sequenceIncludes.
1310
1311- Removed these attributes from the sys module: exc_clear(), exc_type,
1312 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001313
1314
1315Library
1316-------
1317
Georg Brandl52b92cc2008-05-25 09:43:03 +00001318- Removed the compiler package. Use of the _ast module and (an
1319 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001320
Georg Brandl52b92cc2008-05-25 09:43:03 +00001321- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1322 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1323 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001324
Georg Brandl52b92cc2008-05-25 09:43:03 +00001325- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001326
Georg Brandl52b92cc2008-05-25 09:43:03 +00001327- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1328 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1329 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001330
Georg Brandl52b92cc2008-05-25 09:43:03 +00001331- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001332
Georg Brandl52b92cc2008-05-25 09:43:03 +00001333- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001334 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001335
Georg Brandl52b92cc2008-05-25 09:43:03 +00001336- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001337
Georg Brandl52b92cc2008-05-25 09:43:03 +00001338- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001339
1340- Patch #1680961: atexit has been reimplemented in C.
1341
Walter Dörwald41980ca2007-08-16 21:55:45 +00001342- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1343
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001344Build
1345-----
1346
1347C API
1348-----
1349
Georg Brandl52b92cc2008-05-25 09:43:03 +00001350- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001351
Georg Brandl52b92cc2008-05-25 09:43:03 +00001352- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1353 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001354
Georg Brandl52b92cc2008-05-25 09:43:03 +00001355- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001356
Georg Brandl52b92cc2008-05-25 09:43:03 +00001357- Removed these macros: staticforward, statichere, PyArg_GetInt,
1358 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001359
Georg Brandl52b92cc2008-05-25 09:43:03 +00001360- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1361 intintobjargproc, getreadbufferproc, getwritebufferproc,
1362 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001363
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001364Tests
1365-----
1366
Brett Cannone7a30f72008-03-03 03:36:27 +00001367- Removed test.testall as test.regrtest replaces it.
1368
Brett Cannonced04e02005-02-13 22:53:22 +00001369Documentation
1370-------------
1371
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001372Mac
1373---
1374
Georg Brandl52b92cc2008-05-25 09:43:03 +00001375- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001376
Guido van Rossum845702c2007-08-30 18:44:53 +00001377Platforms
1378---------
1379
1380- Support for BeOS and AtheOS was removed (according to PEP 11).
1381
1382- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1383
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001384Tools/Demos
1385-----------
1386
Georg Brandl52b92cc2008-05-25 09:43:03 +00001387
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001388**(For information about older versions, consult the HISTORY file.)**