blob: 16aa8a4fc672ada3e59a3a2c784983de222e7427 [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 Warsaw1f0e67e2008-11-06 03:29:32 +00007What's New in Python 3.0 release candidate 2
8============================================
Guido van Rossumf0af3e32008-10-02 18:55:37 +00009
Barry Warsaw1f0e67e2008-11-06 03:29:32 +000010*Release date: 05-Nov-2008*
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +000011
12Core and Builtins
13-----------------
14
Benjamin Petersond968e272008-11-05 22:48:33 +000015- Issue #4211: The __path__ attribute of frozen packages is now a list instead
16 of a string as required by PEP 302.
17
Benjamin Peterson93ef79c2008-11-05 22:49:09 +000018- Issue #3727: Fixed poplib.
Christian Heimesd3956292008-11-05 19:48:27 +000019
Christian Heimes933238a2008-11-05 19:44:21 +000020- Issue #3714: Fixed nntplib by using bytes where appropriate.
21
Christian Heimesfb5faf02008-11-05 19:39:50 +000022- Issue #1210: Fixed imaplib and its documentation.
23
Christian Heimesecc42a22008-11-05 19:30:32 +000024- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
25 method on file objects with closefd=False. The file descriptor is still
26 kept open but the file object behaves like a closed file. The ``FileIO``
27 object also got a new readonly attribute ``closefd``.
28
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +000029- Issue #3626: On cygwin, starting python with a non-existent script name
30 would not display anything if the file name is only 1 character long.
31
Amaury Forgeot d'Arc424b4812008-10-30 22:25:31 +000032- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
33 method does not return iterators for the 4th and 5th items.
34
Amaury Forgeot d'Arcdd8059f2008-10-30 23:03:32 +000035- Issue #3723: Fixed initialization of subinterpreters.
Christian Heimes6a27efa2008-10-30 21:48:26 +000036
Christian Heimes5833a2f2008-10-30 21:40:04 +000037- Issue #4213: The file system encoding is now normalized by the
38 codec subsystem, for example UTF-8 is turned into utf-8.
39
Christian Heimes9c94ba42008-10-30 21:34:02 +000040- Issue #4200: Changed the atexit module to store its state in its
41 PyModuleDef atexitmodule. This fixes a bug with multiple subinterpeters.
42
Christian Heimesfec925b2008-10-30 21:22:55 +000043- Issue #4237: io.FileIO() was raising invalid warnings caused by
44 insufficient initialization of PyFileIOObject struct members.
45
Amaury Forgeot d'Arcf43ee812008-10-30 20:58:42 +000046- Issue #4170: Pickling a collections.defaultdict object would crash the
47 interpreter.
48
Benjamin Peterson08a8f5f2008-10-19 14:15:00 +000049- Issue #4146: Compilation on OpenBSD has been restored.
50
Brett Cannonda780432008-10-17 03:38:50 +000051- Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
52
Amaury Forgeot d'Arccf8016a2008-10-09 23:37:48 +000053- Issues #2384 and #3975: Tracebacks were not correctly printed when the
54 source file contains a ``coding:`` header: the wrong line was displayed, and
55 the encoding was not respected.
56
Martin v. Löwis4e0630c2008-10-07 13:16:28 +000057- Issue #3740: Null-initialize module state.
58
Benjamin Peterson60320cb2008-09-26 21:49:22 +000059- Issue #3946: PyObject_CheckReadBuffer crashed on a memoryview object.
60
Amaury Forgeot d'Arcd0db98f2008-09-21 21:49:01 +000061- Issue #1688: On Windows, the input() prompt was not correctly displayed if it
62 contains non-ascii characters.
63
Martin v. Löwis6fea2332008-09-25 04:15:27 +000064- Bug #3951: Py_USING_MEMORY_DEBUGGER should not be enabled by default.
65
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +000066Library
67-------
68
Amaury Forgeot d'Arc87eee632008-10-17 20:15:53 +000069- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
70 to call the base __init__ method.
71
72- Issue #3725: telnetlib now works completely in bytes.
Benjamin Peterson3de7fb82008-10-15 20:54:24 +000073
Martin v. Löwis33b64502008-10-15 05:58:17 +000074- Issue #4072: Restore build_py_2to3.
75
Martin v. Löwisd8506df2008-10-06 15:19:21 +000076- Issue #4014: Don't claim that Python has an Alpha release status, in addition
77 to claiming it is Mature.
78
Martin v. Löwis04dc25c2008-10-03 16:09:28 +000079- Issue #3187: Add sys.setfilesystemencoding.
80
Guido van Rossumf0af3e32008-10-02 18:55:37 +000081- Issue #3187: Better support for "undecodable" filenames. Code by Victor
82 Stinner, with small tweaks by GvR.
83
Martin v. Löwis601149b2008-09-29 22:19:08 +000084- Issue #3965: Allow repeated calls to turtle.Screen, by making it a
85 true singleton object.
86
Benjamin Peterson3a53fbb2008-09-27 22:04:16 +000087- Issue #3911: ftplib.FTP.makeport() could give invalid port numbers.
88
Amaury Forgeot d'Arcb5cf3012008-09-25 22:27:43 +000089- Issue #3929: When the database cannot be opened, dbm.open() would incorrectly
90 raise a TypeError: "'tuple' object is not callable" instead of the expected
91 dbm.error.
92
Martin v. Löwis60ebb8b2008-09-21 07:32:10 +000093- Bug #3884: Make the turtle module toplevel again.
94
Thomas Heller1308c262008-09-24 19:01:29 +000095- Issue #3547: Fixed ctypes structures bitfields of varying integer
96 sizes.
97
Gerhard Häring6117f422008-09-22 06:04:51 +000098Extension Modules
99-----------------
100
101- Issue #3659: Subclasses of str didn't work as SQL parameters.
102
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000103Build
104-----
105
Martin v. Löwis900646e2008-11-06 17:30:03 +0000106- Issue #4120: Exclude manifest from extension modules in VS2008.
107
Martin v. Löwisc820eaf2008-10-17 13:47:20 +0000108- Issue #4091: Install pythonxy.dll in system32 again.
109
Martin v. Löwisf63921f2008-10-13 11:30:30 +0000110- Issue #4018: Disable "for me" installations on Vista.
111
Martin v. Löwisb37509b2008-11-04 20:45:29 +0000112- Issue #4204: Fixed module build errors on FreeBSD 4.
113
Martin v. Löwis33b64502008-10-15 05:58:17 +0000114Tools/Demos
115-----------
116
Martin v. Löwis869bad92008-10-17 15:54:44 +0000117- Issue #3717: Fix Demo/embed/demo.c.
118
Martin v. Löwis33b64502008-10-15 05:58:17 +0000119- Issue #4072: Add a distutils demo for build_py_2to3.
120
Barry Warsaw1ecaf2c2008-09-18 04:28:35 +0000121
Barry Warsaw8509df72008-08-21 03:02:47 +0000122What's New in Python 3.0 release candidate 1
123============================================
124
Barry Warsawb8854802008-09-18 03:00:28 +0000125*Release date: 17-Sep-2008*
Barry Warsaw8509df72008-08-21 03:02:47 +0000126
127Core and Builtins
128-----------------
129
Benjamin Peterson5e19e442008-09-10 21:47:03 +0000130- Issue #3827: memoryview lost its size attribute in favor of using len(view).
131
Hirokazu Yamamoto167b12b2008-09-09 14:01:25 +0000132- Issue #3813: could not lanch python.exe via symbolic link on cygwin.
133
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000134- Issue #3705: fix crash when given a non-ascii value on the command line for
Amaury Forgeot d'Arc8530e852008-09-09 07:28:22 +0000135 the "-c" and "-m" parameters. Now the behaviour is as expected under Linux,
136 although under Windows it fails at a later point.
Antoine Pitrou5651eaa2008-09-06 20:46:58 +0000137
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000138- Issue #3279: Importing site at interpreter was failing silently because the
139 site module uses the open builtin which was not initialized at the time.
140
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000141- Issue #3660: Corrected a reference leak in str.encode() when the encoder
142 does not return a bytes object.
143
144- Issue #3774: Added a few more checks in PyTokenizer_FindEncoding to handle
Amaury Forgeot d'Arc1b933ed2008-09-04 22:34:09 +0000145 error conditions.
146
Amaury Forgeot d'Arcf0481112008-09-05 20:48:47 +0000147- Issue #3594: Fix Parser/tokenizer.c:fp_setreadl() to open the file being
Brett Cannon8a9583e2008-09-04 05:04:25 +0000148 tokenized by either a file path or file pointer for the benefit of
149 PyTokenizer_FindEncoding().
150
Antoine Pitroufff95302008-09-03 18:58:51 +0000151- Issue #3696: Error parsing arguments on OpenBSD <= 4.4 and Cygwin. On
152 these systems, the mbstowcs() function is slightly buggy and must be
153 replaced with strlen() for the purpose of counting of number of wide
154 characters needed to represent the multi-byte character string.
155
Antoine Pitrou658fad82008-09-03 18:34:34 +0000156- Issue #3697: "Fatal Python error: Cannot recover from stack overflow"
157 could be easily encountered under Windows in debug mode when exercising
158 the recursion limit checking code, due to bogus handling of recursion
159 limit when USE_STACKCHEK was enabled.
160
Brett Cannon54bd41d2008-09-02 04:01:42 +0000161- Issue 3639: The _warnings module could segfault the interpreter when
162 unexpected types were passed in as arguments.
163
Antoine Pitrouc6b09eb2008-09-01 15:10:14 +0000164- Issue #3712: The memoryview object had a reference leak and didn't support
165 cyclic garbage collection.
166
Antoine Pitrouf71995782008-08-29 18:37:05 +0000167- Issue #3668: Fix a memory leak with the "s*" argument parser in
168 PyArg_ParseTuple and friends, which occurred when the argument for "s*"
169 was correctly parsed but parsing of subsequent arguments failed.
170
Amaury Forgeot d'Arcdb26f7c2008-08-29 07:13:32 +0000171- Issue #3611: An exception __context__ could be cleared in a complex pattern
172 involving a __del__ method re-raising an exception.
173
Antoine Pitrouec569b72008-08-26 22:40:48 +0000174- Issue #2534: speed up isinstance() and issubclass() by 50-70%, so as to
175 match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
176 mechanism. In the process, fix a bug where isinstance() and issubclass(),
177 when given a tuple of classes as second argument, were looking up
178 __instancecheck__ / __subclasscheck__ on the tuple rather than on each
179 type object.
180
Antoine Pitroue2dffc02008-08-26 22:02:58 +0000181- Issue #3663: Py_None was decref'd when printing SyntaxErrors.
182
Benjamin Peterson9edd2bd2008-08-27 00:31:37 +0000183- Issue #3651: Fix various memory leaks when using the buffer
184 interface, or when the "s#" code of PyArg_ParseTuple is given a
185 bytes object.
186
Neal Norwitz6ae2eb22008-08-24 23:50:08 +0000187- Issue #3657: Fix uninitialized memory read when pickling longs.
188 Found by valgrind.
189
Neal Norwitz3ce5d922008-08-24 07:08:55 +0000190- Apply security patches from Apple.
191
Neal Norwitz2f99b242008-08-24 05:48:10 +0000192- Fix crashes on memory allocation failure found with failmalloc.
193
194- Fix memory leaks found with valgrind and update suppressions file.
195
196- Fix compiler warnings in opt mode which would lead to invalid memory reads.
197
198- Fix problem using wrong name in decimal module reported by pychecker.
199
Amaury Forgeot d'Arc20443f32008-08-22 22:05:20 +0000200- Issue #3650: Fixed a reference leak in bytes.split('x').
201
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000202- bytes(o) now tries to use o.__bytes__() before using fallbacks.
203
Gregory P. Smith207f2112008-09-07 06:29:10 +0000204- Issue #1204: The configure script now tests for additional libraries
205 that may be required when linking against readline. This fixes issues
206 with x86_64 builds on some platforms (a few Linux flavors and OpenBSD).
207
Benjamin Petersonc15a0732008-08-26 16:46:47 +0000208C API
209-----
210
211- PyObject_Bytes and PyBytes_FromObject were added.
212
Barry Warsaw8509df72008-08-21 03:02:47 +0000213Library
214-------
215
Guido van Rossum698280d2008-09-10 17:44:35 +0000216- Issue #3756: make re.escape() handle bytes as well as str.
217
Georg Brandl7cd67cc2008-09-09 19:31:25 +0000218- Issue #3800: fix filter() related bug in formatter.py.
219
Antoine Pitrou5fe291f2008-09-06 23:00:03 +0000220- Issue #874900: fix behaviour of threading module after a fork.
221
Antoine Pitrou9e4fdf42008-09-05 23:43:02 +0000222- Issue #3535: zipfile couldn't read some zip files larger than 2GB.
223
224- Issue #3776: Deprecate the bsddb package for removal in 3.0.
225
226- Issue #3762: platform.architecture() fails if python is lanched via
227 its symbolic link.
228
Antoine Pitroud79dc622008-09-05 00:03:33 +0000229- Issue #3660: fix a memory leak in the C accelerator of the pickle module.
230
Antoine Pitrou1d6a16b2008-09-04 21:32:09 +0000231- Issue #3160: the "bdist_wininst" distutils command didn't work.
232
Guilherme Polob212b752008-09-04 11:21:31 +0000233- Issue #1658: tkinter changes dict size during iteration in both
234 tkinter.BaseWidget and tkinter.scrolledtext.ScrolledText.
235
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000236- The bsddb module (and therefore the dbm.bsd module) has been removed.
Gregory P. Smith451e99b2008-09-04 04:46:48 +0000237 It is now maintained outside of the standard library at
238 http://www.jcea.es/programacion/pybsddb.htm.
Benjamin Peterson6ba23322008-09-03 22:59:38 +0000239
Facundo Batistac469d4c2008-09-03 22:49:01 +0000240- Issue 600362: Relocated parse_qs() and parse_qsl(), from the cgi module
241 to the urlparse one. Added a DeprecationWarning in the old module, it
242 will be deprecated in the future.
243
Marc-André Lemburg7b2b1f92008-09-02 12:10:46 +0000244- Issue #3719: platform.architecture() fails if there are spaces in the
245 path to the Python binary.
246
Brett Cannonec92e182008-09-02 02:46:59 +0000247- Issue 3602: As part of the merge of r66135, make the parameters on
248 warnings.catch_warnings() keyword-only. Also remove a DeprecationWarning.
249
Benjamin Petersonb3085c92008-09-01 23:09:31 +0000250- The deprecation warnings for the camelCase threading API names were removed.
251
Jesse Noller338f5782008-09-03 18:22:19 +0000252- Issue #3110: multiprocessing fails to compiel on solaris 10 due to missing
253 SEM_VALUE_MAX.
254
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000255Extension Modules
256-----------------
257
Antoine Pitrou9cadb1b2008-09-15 23:02:56 +0000258- Issue #3782: os.write() must not accept unicode strings.
259
Amaury Forgeot d'Arcd8976f12008-09-02 23:22:56 +0000260- Issue #2975: When compiling several extension modules with Visual Studio 2008
261 from the same python interpreter, some environment variables would grow
262 without limit.
263
Benjamin Peterson6784eb72008-08-23 20:32:27 +0000264- Issue #3643: Added a few more checks to _testcapi to prevent segfaults by
265 exploitation of poor argument checking.
266
Jesus Cea6ba33292008-08-31 14:12:11 +0000267- bsddb code updated to version 4.7.3pre2. This code is the same than
268 Python 2.6 one, since the intention is to keep an unified 2.x/3.x codebase.
269 The Python code is automatically translated using "2to3". Please, do not
270 update this code in Python 3.0 by hand. Update the 2.6 one and then
271 do "2to3".
272
Benjamin Peterson791dc2f2008-09-05 23:27:15 +0000273- The _bytesio and _stringio modules are now compiled into the python binary.
274
Gregory P. Smith693fc462008-09-06 20:13:06 +0000275- Issue #3492 and #3790: Fixed the zlib module and zipimport module uses of
276 mutable bytearray objects where they should have been using immutable bytes.
277
Gregory P. Smith0a608fd2008-09-06 21:34:51 +0000278- Issue #3797: Fixed the dbm, marshal, mmap, ossaudiodev, & winreg modules to
279 return bytes objects instead of bytearray objects.
280
Gregory P. Smith693fc462008-09-06 20:13:06 +0000281
Neal Norwitz8f2f22a2008-08-24 20:59:23 +0000282Tools/Demos
283-----------
284
285- Fix Misc/gdbinit so it works.
286
Barry Warsaw8509df72008-08-21 03:02:47 +0000287
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000288Build
289-----
290
Hirokazu Yamamoto54a1cc62008-09-09 17:55:11 +0000291- Issue #3812: Failed to build python if configure --without-threads.
292
Amaury Forgeot d'Arcf7bfcfb2008-09-09 06:42:00 +0000293- Issue #3791: Remove the bsddb module from the Windows installer, and the
294 core bsddb library from the Windows build files.
295
296
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000297What's new in Python 3.0b3?
298===========================
299
Barry Warsaw57c10582008-08-21 02:39:51 +0000300*Release date: 20-Aug-2008*
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000301
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000302Core and Builtins
303-----------------
304
Benjamin Petersonbc74e5b2008-08-23 20:19:17 +0000305- Issue #3653: Fix a segfault when sys.excepthook was called with invalid
306 arguments.
307
Antoine Pitrou616d2852008-08-19 22:09:34 +0000308- Issue #2394: implement more of the memoryview API, with the caveat that
309 only one-dimensional contiguous buffers are supported and exercised right
310 now. Slicing, slice assignment and comparison (equality and inequality)
311 have been added. Also, the tolist() method has been implemented, but only
312 for byte buffers. Endly, the API has been updated to return bytes objects
313 wherever it used to return bytearrays.
314
Antoine Pitrouee58fa42008-08-19 18:22:14 +0000315- Issue #3560: clean up the new C PyMemoryView API so that naming is
316 internally consistent; add macros PyMemoryView_GET_BASE() and
317 PyMemoryView_GET_BUFFER() to access useful properties of a memory views
318 without relying on a particular implementation; remove the ill-named
319 PyMemoryView() function (PyMemoryView_GET_BUFFER() can be used instead).
320
Thomas Hellerf5049fc2008-08-19 19:49:49 +0000321- ctypes function pointers that are COM methods have a boolean True
322 value again.
323
Antoine Pitrou9a2310d2008-07-25 22:39:39 +0000324- Issue #1819: function calls with several named parameters are now on
325 average 35% faster (as measured by pybench).
326
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000327- The undocumented C APIs PyUnicode_AsString() and
328 PyUnicode_AsStringAndSize() were made private to the interpreter, in
329 order to be able to refine their interfaces for Python 3.1.
330
331 If you need to access the UTF-8 representation of a Unicode object
332 as bytes string, please use PyUnicode_AsUTF8String() instead.
333
Antoine Pitrouaf14b792008-08-07 21:50:41 +0000334- Issue #3460: PyUnicode_Join() implementation is 10% to 80% faster thanks
335 to Python 3.0's stricter semantics which allow to avoid successive
336 reallocations of the result string (this also affects str.join()).
337
Marc-André Lemburg4cc0f242008-08-07 18:54:33 +0000338
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000339Library
340-------
341
Hye-Shik Chang50d1f792008-08-23 08:03:03 +0000342- Issue #1276: Added temporary aliases for CJK Mac encodings to resolve
343 a build problem on MacOS with CJK locales. It adds four temporary
344 mappings to existing legacy codecs that are virtually compatible
345 with Mac encodings. They will be replaced by codecs correctly
346 implemented in 3.1.
347
Amaury Forgeot d'Arc41e36672008-08-20 21:35:50 +0000348- Issue #3614: Corrected a typo in xmlrpc.client, leading to a NameError
349 "global name 'header' is not defined".
350
Antoine Pitroufd036452008-08-19 17:56:33 +0000351- Issue #2834: update the regular expression library to match the unicode
352 standards of py3k. In other words, mixing bytes and unicode strings
353 (be it as pattern, search string or replacement string) raises a TypeError.
354 Moreover, the re.UNICODE flag is enabled automatically for unicode patterns,
355 and can be disabled by specifying a new re.ASCII flag; as for bytes
356 patterns, ASCII matching is the only option and trying to specify re.UNICODE
357 for such patterns raises a ValueError.
358
Guido van Rossum52dbbb92008-08-18 21:44:30 +0000359- Issue #3300: make urllib.parse.[un]quote() default to UTF-8.
360 Code contributed by Matt Giuca. quote() now encodes the input
361 before quoting, unquote() decodes after unquoting. There are
362 new arguments to change the encoding and errors settings.
363 There are also new APIs to skip the encode/decode steps.
364 [un]quote_plus() are also affected.
365
Nick Coghlan36f49522008-08-18 12:31:52 +0000366- Issue #2235: numbers.Number now blocks inheritance of the default id()
367 based hash because that hash mechanism is not correct for numeric types.
368 All concrete numeric types that inherit from Number (rather than just
369 registering with it) must explicitly provide a hash implementation in
370 order for their instances to be hashable.
371
Benjamin Peterson4cd6a952008-08-17 20:23:46 +0000372- Issue #2676: in the email package, content-type parsing was hanging on
373 pathological input because of quadratic or exponential behaviour of a
374 regular expression.
375
Antoine Pitrou87695762008-08-14 22:44:29 +0000376- Issue #3476: binary buffered reading through the new "io" library is now
377 thread-safe.
378
Robert Schuppenies3d1c7de2008-08-10 11:28:17 +0000379- Issue #1342811: Fix leak in Tkinter.Menu.delete. Commands associated to
380 menu entries were not deleted.
381
Lars Gustäbel0c24e8b2008-08-02 11:43:24 +0000382- Remove the TarFileCompat class from tarfile.py.
383
Amaury Forgeot d'Arcbdbddf82008-08-01 00:06:49 +0000384- Issue #2491: os.fdopen is now almost an alias for the built-in open(), and
385 accepts the same parameters. It just checks that its first argument is an
386 integer.
387
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000388- Issue #3394: zipfile.writestr sets external attributes when passed a
389 file name rather than a ZipInfo instance, so files are extracted with
390 mode 0600 rather than 000 under Unix.
391
Antoine Pitrouc66f9092008-07-28 19:46:11 +0000392- Issue #2523: Fix quadratic behaviour when read()ing a binary file without
393 asking for a specific length.
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000394
Martin v. Löwis371bb502008-08-16 13:02:57 +0000395Extension Modules
396-----------------
397
398- Bug #3542: Support Unicode strings in _msi module.
399
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000400What's new in Python 3.0b2?
401===========================
402
Barry Warsaw4bd1cef2008-07-18 02:28:44 +0000403*Release date: 17-Jul-2008*
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000404
405Core and Builtins
406-----------------
407
Mark Dickinson65fe25e2008-07-16 11:30:51 +0000408- Issue #3008: the float type has a new instance method 'float.hex'
409 and a new class method 'float.fromhex' to convert floating-point
410 numbers to and from hexadecimal strings, respectively.
411
Eric Smithd68af8f2008-07-16 00:15:35 +0000412- Issue #3083: Add alternate (#) formatting for bin, oct, hex output
413 for str.format(). This adds the prefix 0b, 0o, or 0x, respectively.
414
Amaury Forgeot d'Arca4db6862008-07-04 21:26:43 +0000415- Issue #3280: like chr(), the "%c" format now accepts unicode code points
416 beyond the Basic Multilingual Plane (above 0xffff) on all configurations. On
417 "narrow Unicode" builds, the result is a string of 2 code units, forming a
418 UTF-16 surrogate pair.
419
Georg Brandld52429f2008-07-04 15:55:02 +0000420- Issue #3282: str.isprintable() should return False for undefined
421 Unicode characters.
422
Martin v. Löwis029656f2008-06-30 04:06:08 +0000423- Issue #3236: Return small longs from PyLong_FromString.
424
Benjamin Petersone6528212008-07-15 15:32:09 +0000425- Exception tracebacks now support exception chaining.
426
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000427Library
428-------
429
Brett Cannonc2542e92008-07-25 18:19:20 +0000430- Removed the sunaudio module. Use sunau instead.
431
Thomas Heller47bc8092008-08-19 06:38:12 +0000432- Issue #3554: ctypes.string_at and ctypes.wstring_at did call Python
433 api functions without holding the GIL, which could lead to a fatal
434 error when they failed.
435
436- Issue #799428: Fix Tkinter.Misc._nametowidget to unwrap Tcl command objects.
437
Georg Brandl30704ea02008-07-23 15:07:12 +0000438- Removed "ast" function aliases from the parser module.
439
Thomas Heller15383a02008-07-15 19:46:52 +0000440- Issue #3313: Fixed a crash when a failed dlopen() call does not set
441 a valid dlerror() message.
442
Thomas Heller0261e1e2008-07-15 17:25:07 +0000443- Issue #3258: Fixed a crash when a ctypes POINTER type to an
444 incomplete structure was created.
445
Georg Brandl1abcbf82008-07-01 19:28:43 +0000446- Issue #2683: Fix inconsistency in subprocess.Popen.communicate(): the
447 argument now must be a bytes object in any case.
448
Amaury Forgeot d'Arc9196dc62008-06-19 20:54:32 +0000449- Issue #3145: help("modules whatever") failed when trying to load the source
450 code of every single module of the standard library, including invalid files
451 used in the test suite.
452
Georg Brandlbded4d32008-07-17 18:15:35 +0000453- The gettext library now consistently uses Unicode strings for message ids
454 and message strings, and ``ugettext()`` and the like don't exist anymore.
Benjamin Peterson801844d2008-07-14 14:32:15 +0000455
Benjamin Petersone6528212008-07-15 15:32:09 +0000456- The traceback module has been expanded to handle chained exceptions.
457
Amaury Forgeot d'Arc612f61f2008-07-02 23:02:21 +0000458C API
459-----
460
461- Issue #3247: the function Py_FindMethod was removed. Modern types should
462 use the tp_methods slot instead.
463
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000464Tools/Demos
465-----------
466
Georg Brandl336341f2008-07-01 20:21:28 +0000467- The Mac/Demos directory has been removed.
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000468
Georg Brandl336341f2008-07-01 20:21:28 +0000469- All of the Mac scripts have been removed (including BuildApplet.py).
Benjamin Petersonde9c8692008-07-01 18:23:09 +0000470
471
Brett Cannon0d71ee72008-05-08 18:13:40 +0000472What's new in Python 3.0b1?
473===========================
474
Barry Warsawc1e689e2008-06-19 00:35:43 +0000475*Release date: 18-Jun-2008*
Brett Cannon0d71ee72008-05-08 18:13:40 +0000476
477Core and Builtins
478-----------------
479
Brett Cannondb734912008-06-27 00:52:15 +0000480- Issue #3211: warnings.warn_explicit() did not guard against its 'registry'
481 argument being anything other than a dict or None. Also fixed a bug in error
482 handling when 'message' and 'category' were both set to None, triggering a
483 bus error.
484
Amaury Forgeot d'Arcc856c7a2008-06-16 19:50:09 +0000485- Issue #3100: Corrected a crash on deallocation of a subclassed weakref which
486 holds the last (strong) reference to its referent.
487
Georg Brandl559e5d72008-06-11 18:37:52 +0000488- Issue #2630: implement PEP 3138. repr() now returns printable
489 Unicode characters unescaped, to get an ASCII-only representation
490 of an object use ascii().
491
Amaury Forgeot d'Arcf1ca0b12008-06-11 17:40:47 +0000492- Issue #1342: On windows, Python could not start when installed in a
493 directory with non-ascii characters.
494
Martin v. Löwis1a214512008-06-11 05:26:20 +0000495- Implement PEP 3121: new module initialization and finalization API.
496
Georg Brandle1b5ac62008-06-04 13:06:58 +0000497- Removed the already-defunct ``-t`` option.
498
Amaury Forgeot d'Arc74c71f52008-05-26 21:41:42 +0000499- Issue #2957: Corrected a ValueError "recursion limit exceeded", when
500 unmarshalling many code objects, which happens when importing a
501 large .pyc file (~1000 functions).
502
Georg Brandl52b92cc2008-05-25 09:43:03 +0000503- Issue #2963: fix merging oversight that disabled method cache for
504 all types.
Georg Brandl1bcf35a2008-05-25 09:32:09 +0000505
Georg Brandlc9b09532008-05-25 09:24:38 +0000506- Issue #2964: fix a missing INCREF in instancemethod_descr_get.
507
Georg Brandl52b92cc2008-05-25 09:43:03 +0000508- Issue #2895: Don't crash when given bytes objects as keyword names.
Georg Brandld8b690f2008-05-16 17:28:50 +0000509
Georg Brandl52b92cc2008-05-25 09:43:03 +0000510- Issue #2798: When parsing arguments with PyArg_ParseTuple, the "s"
511 code now allows any unicode string and returns a utf-8 encoded
512 buffer, just like the "s#" code already does. The "z" code was
513 corrected as well.
Amaury Forgeot d'Arc07404592008-05-12 13:19:07 +0000514
Georg Brandl52b92cc2008-05-25 09:43:03 +0000515- Issue #2863: generators now have a ``gen.__name__`` attribute that
516 equals ``gen.gi_code.co_name``, like ``func.__name___`` that equals
517 ``func.func_code.co_name``. The repr() of a generator now also
518 contains this name.
Alexandre Vassalottie9f305f2008-05-16 04:39:54 +0000519
520- Issue #2831: enumerate() now has a ``start`` argument.
521
Georg Brandl52b92cc2008-05-25 09:43:03 +0000522- Issue #2801: fix bug in the float.is_integer method where a
523 ValueError was sometimes incorrectly raised.
Mark Dickinsonc4352b02008-05-09 13:55:01 +0000524
Georg Brandl52b92cc2008-05-25 09:43:03 +0000525- The ``--with-toolbox-glue`` option (and the associated
526 pymactoolbox.h) have been removed.
Benjamin Peterson79629ab2008-05-14 21:07:12 +0000527
Georg Brandl52b92cc2008-05-25 09:43:03 +0000528- Issue #2196: hasattr() now lets exceptions which do not inherit
529 Exception (KeyboardInterrupt, and SystemExit) propagate instead of
530 ignoring them.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000531
Benjamin Petersoneec3d712008-06-11 15:59:43 +0000532- #3021 Exception reraising sematics have been significantly improved. However,
533 f_exc_type, f_exc_value, and f_exc_traceback cannot be accessed from Python
534 code anymore.
535
Benjamin Peterson4f92ca42008-06-11 20:21:57 +0000536- Three of PyNumberMethods' members, nb_coerce, nb_hex, and nb_oct, have been
537 removed.
538
Brett Cannon0d71ee72008-05-08 18:13:40 +0000539Extension Modules
540-----------------
541
Georg Brandl38feaf02008-05-25 07:45:51 +0000542- Renamed ``_winreg`` module to ``winreg``.
543
Georg Brandl52b92cc2008-05-25 09:43:03 +0000544- Support os.O_ASYNC and fcntl.FASYNC if the constants exist on the
545 platform.
Alexandre Vassalottibee32532008-05-16 18:15:12 +0000546
547- Support for Windows 9x has been removed from the winsound module.
548
Georg Brandl52b92cc2008-05-25 09:43:03 +0000549- Issue #2870: cmathmodule.c compile error.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000550
Brett Cannon0d71ee72008-05-08 18:13:40 +0000551Library
552-------
553
Benjamin Peterson87069fd2008-08-20 02:00:14 +0000554- The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
555 symtable.Symbol have been removed.
556
Amaury Forgeot d'Arccb0d2d72008-06-18 22:19:22 +0000557- Patch #3133: http.server.CGIHTTPRequestHandler did not work on windows.
558
Jeremy Hylton1afc1692008-06-18 20:49:58 +0000559- a new ``urllib`` package was created. It consists of code from
560 ``urllib``, ``urllib2``, ``urlparse``, and ``robotparser``. The old
561 modules have all been removed. The new package has five submodules:
562 ``urllib.parse``, ``urllib.request``, ``urllib.response``,
563 ``urllib.error``, and ``urllib.robotparser``. The
564 ``urllib.request.urlopen()`` function uses the url opener from
565 ``urllib2``. (Note that the unittests have not been renamed for the
566 beta, but they will be renamed in the future.)
567
Benjamin Petersona0c0a4a2008-06-12 22:15:50 +0000568- rfc822 has been removed in favor of the email package.
569
Benjamin Peterson425ea7f2008-06-12 14:11:35 +0000570- mimetools has been removed in favor of the email package.
Benjamin Peterson23c51a22008-06-12 14:06:57 +0000571
Barry Warsawf5019422008-06-12 02:42:00 +0000572- Patch #2849: Remove use of rfc822 module from standard library.
573
Alexandre Vassalotti794652d2008-06-11 22:58:36 +0000574- Added C optimized implementation of io.StringIO.
575
Alexandre Vassalottica2d6102008-06-12 18:26:05 +0000576- The ``pickle`` module is now automatically use an optimized C
577 implementation of Pickler and Unpickler when available. The
578 ``cPickle`` module is no longer needed.
579
Georg Brandl877b10a2008-06-01 21:25:55 +0000580- Removed the ``htmllib`` and ``sgmllib`` modules.
581
Georg Brandl61013952008-05-28 15:56:30 +0000582- The deprecated ``SmartCookie`` and ``SimpleCookie`` classes have
583 been removed from ``http.cookies``.
584
Brett Cannona23810f2008-05-26 19:04:21 +0000585- The ``commands`` module has been removed. Its getoutput() and
586 getstatusoutput() functions have been moved to the ``subprocess`` module.
587
Georg Brandl3d5c4252008-05-26 18:03:26 +0000588- The ``http`` package was created; it contains the old ``httplib``
589 as ``http.client``, ``Cookie`` as ``http.cookies``, ``cookielib``
590 as ``http.cookiejar``, and the content of the three ``HTTPServer``
591 modules as ``http.server``.
592
Georg Brandl38eceaa2008-05-26 11:14:17 +0000593- The ``xmlrpc`` package was created; it contains the old
594 ``xmlrpclib`` module as ``xmlrpc.client`` and the content of
595 the old ``SimpleXMLRPCServer`` and ``DocXMLRPCServer`` modules
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000596 as ``xmlrpc.server``.
Georg Brandl38eceaa2008-05-26 11:14:17 +0000597
598- The ``dbm`` package was created, containing the old modules
599 ``anydbm`` and ``whichdb`` in its ``__init__.py``, and having
600 ``dbm.gnu`` (was ``gdbm``), ``dbm.bsd`` (was ``dbhash``),
601 ``dbm.ndbm`` (was ``dbm``) and ``dbm.dumb`` (was ``dumbdbm``)
602 as submodules.
603
Georg Brandl52b92cc2008-05-25 09:43:03 +0000604- The ``repr`` module has been renamed to ``reprlib``.
Alexandre Vassalotti1f2ba4b2008-05-16 07:12:44 +0000605
Georg Brandl52b92cc2008-05-25 09:43:03 +0000606- The ``statvfs`` module has been removed.
Brett Cannonacbb7862008-05-16 00:42:57 +0000607
Georg Brandl52b92cc2008-05-25 09:43:03 +0000608- Issue #1713041: fix pprint's handling of maximum depth.
Alexandre Vassalottieca20b62008-05-16 02:54:33 +0000609
Georg Brandl52b92cc2008-05-25 09:43:03 +0000610- Issue #2250: Exceptions raised during evaluation of names in
611 rlcompleter's ``Completer.complete()`` method are now caught and
612 ignored.
Alexandre Vassalotti8ae3e052008-05-16 00:41:41 +0000613
Georg Brandl52b92cc2008-05-25 09:43:03 +0000614- Patch #2659: Added ``break_on_hyphens`` option to textwrap's
615 ``TextWrapper`` class.
Alexandre Vassalotti1d1eaa42008-05-14 22:59:42 +0000616
Alexandre Vassalotti6461e102008-05-15 22:09:29 +0000617- Issue #2487: change the semantics of math.ldexp(x, n) when n is too
618 large to fit in a C long. ldexp(x, n) now returns a zero (with
619 suitable sign) if n is large and negative; previously, it raised
620 OverflowError.
621
Georg Brandl52b92cc2008-05-25 09:43:03 +0000622- The ``ConfigParser`` module has been renamed to ``configparser``.
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000623
Georg Brandl52b92cc2008-05-25 09:43:03 +0000624- Issue #2865: webbrowser.open() works again in a KDE environment.
Amaury Forgeot d'Arc2b2b44d2008-05-12 14:41:00 +0000625
Georg Brandl52b92cc2008-05-25 09:43:03 +0000626- The ``multifile`` module has been removed.
Brett Cannond3343cb2008-05-12 03:18:21 +0000627
Georg Brandl52b92cc2008-05-25 09:43:03 +0000628- The ``SocketServer`` module has been renamed to ``socketserver``.
Alexandre Vassalottice261952008-05-12 02:31:37 +0000629
Georg Brandl52b92cc2008-05-25 09:43:03 +0000630- Fixed the ``__all__`` setting on ``collections`` to include
631 ``UserList`` and ``UserString``.
Brett Cannon23a4a7b2008-05-12 00:56:28 +0000632
Brett Cannoncf3520c2008-05-11 22:47:58 +0000633- The sre module has been removed.
634
Alexandre Vassalottif260e442008-05-11 19:59:59 +0000635- The Queue module has been renamed to queue.
636
Alexandre Vassalottif7fa63d2008-05-11 08:55:36 +0000637- The copy_reg module has been renamed to copyreg.
638
Brett Cannond8b61ee2008-05-11 03:00:26 +0000639- The mhlib module has been removed.
640
Brett Cannonbd474422008-05-10 22:42:14 +0000641- The ihooks module has been removed.
642
Brett Cannonb59a2bd2008-05-10 22:03:16 +0000643- The fpformat module has been removed.
644
Brett Cannonf4fd9932008-05-10 21:11:46 +0000645- The dircache module has been removed.
646
Brett Cannond175b4c2008-05-10 03:19:54 +0000647- The Canvas module has been removed.
648
Mark Dickinsonb27406c2008-05-09 13:42:33 +0000649- The Decimal module gained the magic methods __round__, __ceil__,
650 __floor__ and __trunc__, to give support for round, math.ceil,
651 math.floor and math.trunc.
652
Brett Cannon900ee3a2008-05-08 20:31:11 +0000653- The user module has been removed.
654
Brett Cannon34afe872008-05-08 20:31:44 +0000655- The mutex module has been removed.
656
Brett Cannon0d71ee72008-05-08 18:13:40 +0000657- The imputil module has been removed.
658
Georg Brandl52b92cc2008-05-25 09:43:03 +0000659- os.path.walk has been removed in favor of os.walk.
Benjamin Petersond71ca412008-05-08 23:44:58 +0000660
Alexandre Vassalotti5f8ced22008-05-16 00:03:33 +0000661- pdb gained the "until" command.
662
Georg Brandl52b92cc2008-05-25 09:43:03 +0000663- The test.test_support module has been renamed to test.support.
Benjamin Petersonee8712c2008-05-20 21:35:26 +0000664
Georg Brandl32de7af2008-08-18 23:07:41 +0000665- The threading module API was renamed to be PEP 8 compliant. The
666 old names are still present, but will be removed in the near future.
Benjamin Peterson672b8032008-06-11 19:14:14 +0000667
Georg Brandl294d5a92008-06-01 19:25:32 +0000668Tools/Demos
669-----------
670
671- The bgen tool has been removed.
Benjamin Peterson630c8292008-06-01 18:50:38 +0000672
Brett Cannon0d71ee72008-05-08 18:13:40 +0000673Build
674-----
675
676
Barry Warsaw66079cd2008-04-04 01:36:36 +0000677What's New in Python 3.0a5?
678===========================
679
Barry Warsaw9eab8b02008-05-08 13:05:38 +0000680*Release date: 08-May-2008*
Barry Warsaw66079cd2008-04-04 01:36:36 +0000681
682Core and Builtins
683-----------------
684
Georg Brandl52b92cc2008-05-25 09:43:03 +0000685- Fixed misbehaviour of PyLong_FromSsize_t on systems where
686 sizeof(size_t) > sizeof(long).
Mark Dickinson7ab6be22008-04-15 21:42:42 +0000687
Georg Brandl52b92cc2008-05-25 09:43:03 +0000688- Issue #2221: Corrected a SystemError "error return without exception
689 set", when the code executed by exec() raises an exception, and
690 sys.stdout.flush() also raises an error.
Amaury Forgeot d'Arc7fedbe52008-04-10 21:03:09 +0000691
Georg Brandl52b92cc2008-05-25 09:43:03 +0000692- Bug #2565: The repr() of type objects now calls them 'class', not
693 'type' - whether they are builtin types or not.
Martin v. Löwis250ad612008-04-07 05:43:42 +0000694
Martin v. Löwis790465f2008-04-05 20:41:37 +0000695- The command line processing was converted to pass Unicode strings
696 through as unmodified as possible; as a consequence, the C API
697 related to command line arguments was changed to use wchar_t.
698
Georg Brandl52b92cc2008-05-25 09:43:03 +0000699- All backslashes in raw strings are interpreted literally. This
700 means that '\u' and '\U' escapes are not treated specially.
Benjamin Petersona2f837f2008-04-28 21:05:10 +0000701
Barry Warsaw66079cd2008-04-04 01:36:36 +0000702Extension Modules
703-----------------
704
705Library
706-------
707
Georg Brandl52b92cc2008-05-25 09:43:03 +0000708- ctypes objects now support the PEP3118 buffer interface.
Thomas Hellerb041fda2008-04-30 17:11:46 +0000709
Thomas Hellere106dc32008-04-24 18:39:36 +0000710- Issue #2682: ctypes callback functions now longer contain a cyclic
711 reference to themselves.
712
Georg Brandl52b92cc2008-05-25 09:43:03 +0000713- Issue #2058: Remove the buf attribute and add __slots__ to the
714 TarInfo class in order to reduce tarfile's memory usage.
Lars Gustäbelc2ea8c62008-04-14 10:05:48 +0000715
Martin v. Löwis8efc62c2008-04-10 19:02:25 +0000716- Bug #2606: Avoid calling .sort() on a dict_keys object.
717
Thomas Hellerbff533b2008-04-04 19:53:14 +0000718- The bundled libffi copy is now in sync with the recently released
719 libffi3.0.5 version, apart from some small changes to
720 Modules/_ctypes/libffi/configure.ac.
721
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000722Build
723-----
724
Mark Dickinsonb0e2b4c2008-04-26 20:48:56 +0000725- Issue #1496032: On alpha, use -mieee when gcc is the compiler.
726
Guido van Rossumdc21db32008-04-07 18:37:41 +0000727- "make install" is now an alias for "make altinstall", to prevent
Georg Brandl52b92cc2008-05-25 09:43:03 +0000728 accidentally overwriting a Python 2.x installation. Use "make
729 fullinstall" to force Python 3.0 to be installed as "python".
Guido van Rossumdc21db32008-04-07 18:37:41 +0000730
Thomas Hellerf44b9a12008-04-04 10:18:23 +0000731- Issue #2544: On HP-UX systems, use 'gcc -shared' for linking when
732 gcc is used as compiler.
Barry Warsaw66079cd2008-04-04 01:36:36 +0000733
Georg Brandl52b92cc2008-05-25 09:43:03 +0000734
Barry Warsawa9d499d2008-03-01 18:38:07 +0000735What's New in Python 3.0a4?
736===========================
737
Barry Warsawbb5cd082008-04-02 23:33:27 +0000738*Release date: 02-Apr-2008*
Barry Warsawa9d499d2008-03-01 18:38:07 +0000739
Martin v. Löwis25931462008-03-17 20:43:42 +0000740Core and Builtins
741-----------------
742
743- Bug #2301: Don't try decoding the source code into the original
744 encoding for syntax errors.
745
Martin v. Löwis92fab752008-03-08 10:40:41 +0000746Extension Modules
747-----------------
748
Neal Norwitz6cf49cf2008-03-24 06:22:57 +0000749- The dl module was removed, use the ctypes module instead.
750
Martin v. Löwis92fab752008-03-08 10:40:41 +0000751- Use wchar_t functions in _locale module.
Barry Warsawa9d499d2008-03-01 18:38:07 +0000752
Martin v. Löwis071ef772008-03-08 11:24:24 +0000753Library
754-------
755
Georg Brandl52b92cc2008-05-25 09:43:03 +0000756- The class distutils.commands.build_py.build_py_2to3 can be used as a
757 build_py replacement to automatically run 2to3 on modules that are
758 going to be installed.
Martin v. Löwis73a22f02008-03-22 00:35:10 +0000759
Guido van Rossumf4169812008-03-17 22:56:06 +0000760- A new pickle protocol (protocol 3) is added with explicit support
761 for bytes. This is the default protocol. It intentionally cannot
762 be unpickled by Python 2.x.
763
764- When a pickle written by Python 2.x contains an (8-bit) str
765 instance, this is now decoded to a (Unicode) str instance. The
766 encoding used to do this defaults to ASCII, but can be overridden
767 via two new keyword arguments to the Unpickler class. Previously
768 this would create bytes instances, which is usually wrong: str
769 instances are often used to pickle attribute names etc., and text is
770 more common than binary data anyway.
771
Martin v. Löwis071ef772008-03-08 11:24:24 +0000772- Default to ASCII as the locale.getpreferredencoding, if the POSIX
Georg Brandl52b92cc2008-05-25 09:43:03 +0000773 system doesn't support CODESET and LANG isn't set or doesn't allow
774 deduction of an encoding.
Martin v. Löwis071ef772008-03-08 11:24:24 +0000775
Georg Brandl52b92cc2008-05-25 09:43:03 +0000776- Issue #1202: zlib.crc32 and zlib.adler32 now return an unsigned
777 value.
Gregory P. Smith425136b2008-03-17 20:45:21 +0000778
Georg Brandl52b92cc2008-05-25 09:43:03 +0000779- Issue #719888: Updated tokenize to use a bytes API. generate_tokens
780 has been renamed tokenize and now works with bytes rather than
781 strings. A new detect_encoding function has been added for
782 determining source file encoding according to PEP-0263. Token
783 sequences returned by tokenize always start with an ENCODING token
784 which specifies the encoding used to decode the file. This token is
785 used to encode the output of untokenize back to bytes.
786
Barry Warsawa9d499d2008-03-01 18:38:07 +0000787
Christian Heimesbc873412007-12-08 22:11:32 +0000788What's New in Python 3.0a3?
789===========================
790
Barry Warsaw659fc422008-03-01 17:45:23 +0000791*Release date: 29-Feb-2008*
Christian Heimesbc873412007-12-08 22:11:32 +0000792
793Core and Builtins
794-----------------
795
Georg Brandl52b92cc2008-05-25 09:43:03 +0000796- Issue #2282: io.TextIOWrapper was not overriding seekable() from
797 io.IOBase.
Ka-Ping Yeeddaa7062008-03-17 20:35:15 +0000798
Georg Brandl52b92cc2008-05-25 09:43:03 +0000799- Issue #2115: Important speedup in setting __slot__ attributes. Also
800 prevent a possible crash: an Abstract Base Class would try to access
801 a slot on a registered virtual subclass.
Christian Heimesa156e092008-02-16 07:38:31 +0000802
Georg Brandl52b92cc2008-05-25 09:43:03 +0000803- Fixed repr() and str() of complex numbers with infinity or nan as
804 real or imaginary part.
Christian Heimesa156e092008-02-16 07:38:31 +0000805
Georg Brandl52b92cc2008-05-25 09:43:03 +0000806- Clear all free list during a gc.collect() of the highest generation
807 in order to allow pymalloc to free more arenas. Python may give back
808 memory to the OS earlier.
Christian Heimesa156e092008-02-16 07:38:31 +0000809
Georg Brandl52b92cc2008-05-25 09:43:03 +0000810- Issue #2045: Fix an infinite recursion triggered when printing a
811 subclass of collections.defaultdict, if its default_factory is set
812 to a bound method.
Christian Heimesa156e092008-02-16 07:38:31 +0000813
814- Fixed a minor memory leak in dictobject.c. The content of the free
815 list was not freed on interpreter shutdown.
816
Georg Brandl52b92cc2008-05-25 09:43:03 +0000817- Limit free list of method and builtin function objects to 256
818 entries each.
Christian Heimesa156e092008-02-16 07:38:31 +0000819
Georg Brandl52b92cc2008-05-25 09:43:03 +0000820- Patch #1953: Added ``sys._compact_freelists()`` and the C API
821 functions ``PyInt_CompactFreeList`` and ``PyFloat_CompactFreeList``
Christian Heimesa156e092008-02-16 07:38:31 +0000822 to compact the internal free lists of pre-allocted ints and floats.
823
824- Bug #1983: Fixed return type of fork(), fork1() and forkpty() calls.
Georg Brandl52b92cc2008-05-25 09:43:03 +0000825 Python expected the return type int but the fork familie returns
826 pi_t.
Christian Heimesa156e092008-02-16 07:38:31 +0000827
Georg Brandl52b92cc2008-05-25 09:43:03 +0000828- Issue #1678380: Fix a bug that identifies 0j and -0j when they
829 appear in the same code unit.
Christian Heimesa156e092008-02-16 07:38:31 +0000830
Georg Brandl52b92cc2008-05-25 09:43:03 +0000831- Issue #2025: Added tuple.count() and tuple.index() methods to comply
832 with the collections.Sequence API.
Raymond Hettinger65baa342008-02-07 00:41:02 +0000833
Georg Brandl52b92cc2008-05-25 09:43:03 +0000834- Fixed multiple reinitialization of the Python interpreter. The small
835 int list in longobject.c has caused a seg fault during the third
836 finalization.
Christian Heimesdfc12ed2008-01-31 15:16:38 +0000837
Georg Brandl52b92cc2008-05-25 09:43:03 +0000838- Issue #1973: bytes.fromhex('') raised SystemError.
Christian Heimesc04dac02008-01-30 11:27:57 +0000839
Georg Brandl52b92cc2008-05-25 09:43:03 +0000840- Issue #1771: remove cmp parameter from sorted() and list.sort().
Raymond Hettinger70b64fc2008-01-30 20:15:17 +0000841
Georg Brandl52b92cc2008-05-25 09:43:03 +0000842- Issue #1969: split and rsplit in bytearray are inconsistent.
Christian Heimes7b876152008-01-30 09:51:48 +0000843
Georg Brandl52b92cc2008-05-25 09:43:03 +0000844- map() no longer accepts None for the first argument. Use zip()
845 instead.
Raymond Hettinger1dfde1d2008-01-22 23:25:35 +0000846
Facundo Batista2336bdd2008-01-19 19:12:01 +0000847- Issue #1769: Now int("- 1") is not allowed any more.
848
Georg Brandl52b92cc2008-05-25 09:43:03 +0000849- Object/longobject.c: long(float('nan')) raises an OverflowError
850 instead of returning 0.
Christian Heimes386cd1e2008-01-15 02:01:20 +0000851
Georg Brandl52b92cc2008-05-25 09:43:03 +0000852- Issue #1762972: __file__ points to the source file instead of the
853 pyc/pyo file if the py file exists.
Christian Heimes3b06e532008-01-07 20:12:44 +0000854
Guido van Rossumab078dd2008-01-06 00:09:11 +0000855- Issue #1393: object_richcompare() returns NotImplemented instead of
856 False if the objects aren't equal, to give the other side a chance.
857
Guido van Rossume239b002008-01-06 00:44:20 +0000858- Issue #1692: Interpreter was not displaying location of SyntaxError.
Kurt B. Kaiser43b15092008-01-05 04:32:22 +0000859
Georg Brandl52b92cc2008-05-25 09:43:03 +0000860- Improve some exception messages when Windows fails to load an
861 extension module. Now we get for example '%1 is not a valid Win32
862 application' instead of 'error code 193'. Also use Unicode strings
863 to deal with non-English locales.
Amaury Forgeot d'Arcbccd63c2008-01-04 01:21:27 +0000864
Georg Brandl52b92cc2008-05-25 09:43:03 +0000865- Issue #1587: Added instancemethod wrapper for PyCFunctions. The
866 Python C API has gained a new type *PyInstanceMethod_Type* and the
867 functions *PyInstanceMethod_Check(o)*, *PyInstanceMethod_New(func)*
868 and *PyInstanceMethod_Function(im)*.
Christian Heimesa3534a62007-12-11 19:56:40 +0000869
Georg Brandl52b92cc2008-05-25 09:43:03 +0000870- Constants gc.DEBUG_OBJECT and gc.DEBUG_INSTANCE have been removed
871 from the gc module; gc.DEBUG_COLLECTABLE or gc.DEBUG_UNCOLLECTABLE
872 are now enough to print the corresponding list of objects considered
873 by the garbage collector.
Amaury Forgeot d'Arcad8dcd52007-12-10 23:58:35 +0000874
Georg Brandl52b92cc2008-05-25 09:43:03 +0000875- Issue #1573: Improper use of the keyword-only syntax makes the
876 parser crash.
Christian Heimesbc873412007-12-08 22:11:32 +0000877
Georg Brandl52b92cc2008-05-25 09:43:03 +0000878- Issue #1564: The set implementation should special-case PyUnicode
879 instead of PyString.
Christian Heimes0ded5b52007-12-10 15:50:56 +0000880
Guido van Rossumea6775b2008-02-21 20:16:31 +0000881- Patch #1031213: Decode source line in SyntaxErrors back to its
882 original source encoding.
Christian Heimes7131fd92008-02-19 14:21:46 +0000883
Christian Heimes09aaa882008-02-23 15:01:06 +0000884- inspect.getsource() includes the decorators again.
885
Guido van Rossumea6775b2008-02-21 20:16:31 +0000886- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a
887 mountpoint.
Christian Heimes7131fd92008-02-19 14:21:46 +0000888
Georg Brandl52b92cc2008-05-25 09:43:03 +0000889- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when
890 the first chunk fed to the decoder started with a BOM, but was
891 longer than 3 bytes.
Christian Heimes7131fd92008-02-19 14:21:46 +0000892
Christian Heimesbc873412007-12-08 22:11:32 +0000893Extension Modules
894-----------------
895
Georg Brandl52b92cc2008-05-25 09:43:03 +0000896- Code for itertools ifilter(), imap(), and izip() moved to bultins
897 and renamed to filter(), map(), and zip(). Also, renamed
898 izip_longest() to zip_longest() and ifilterfalse() to filterfalse().
Raymond Hettinger736c0ab2008-03-13 02:09:15 +0000899
Georg Brandl52b92cc2008-05-25 09:43:03 +0000900- Issue #1762972: Readded the reload() function as imp.reload().
Guido van Rossumea6775b2008-02-21 20:16:31 +0000901
Georg Brandl52b92cc2008-05-25 09:43:03 +0000902- Bug #2111: mmap segfaults when trying to write a block opened with
903 PROT_READ.
Christian Heimesa156e092008-02-16 07:38:31 +0000904
Georg Brandl52b92cc2008-05-25 09:43:03 +0000905- Issue #2063: correct order of utime and stime in os.times() result
906 on Windows.
Christian Heimes7131fd92008-02-19 14:21:46 +0000907
Christian Heimesbc873412007-12-08 22:11:32 +0000908Library
909-------
910
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000911- Weakref dictionaries now inherit from MutableMapping.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000912
Georg Brandl52b92cc2008-05-25 09:43:03 +0000913- Created new UserDict class in collections module. This one inherits
914 from and complies with the MutableMapping ABC. Also, moved
915 UserString and UserList to the collections module. The
916 MutableUserString class was removed.
Raymond Hettinger48b8b662008-02-05 01:53:00 +0000917
Guido van Rossumea6775b2008-02-21 20:16:31 +0000918- Removed UserDict.DictMixin. Replaced all its uses with
919 collections.MutableMapping.
Raymond Hettingeredf3b732008-02-04 22:07:15 +0000920
Guido van Rossume239b002008-01-06 00:44:20 +0000921- Issue #1703: getpass() should flush after writing prompt.
Christian Heimesfc5aa9d2007-12-11 09:00:01 +0000922
Guido van Rossume239b002008-01-06 00:44:20 +0000923- Issue #1585: IDLE uses non-existent xrange() function.
924
925- Issue #1578: Problems in win_getpass.
926
Georg Brandl52d168a2008-01-07 18:10:24 +0000927Build
928-----
929
Georg Brandl52b92cc2008-05-25 09:43:03 +0000930- Renamed --enable-unicode configure flag to --with-wide-unicode,
931 since Unicode strings can't be disabled anymore.
Georg Brandl52d168a2008-01-07 18:10:24 +0000932
Guido van Rossume239b002008-01-06 00:44:20 +0000933C API
934-----
935
936- Issue #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE,
937 Py_TYPE and Py_REFCNT.
938
Georg Brandl52b92cc2008-05-25 09:43:03 +0000939- New API PyImport_ImportModuleNoBlock(), works like
940 PyImport_ImportModule() but won't block on the import lock
941 (returning an error instead).
Christian Heimes0ec88b32007-12-10 17:02:00 +0000942
Christian Heimesbc873412007-12-08 22:11:32 +0000943
Fred Drake0e474a82007-10-11 18:01:43 +0000944What's New in Python 3.0a2?
Christian Heimesbc873412007-12-08 22:11:32 +0000945===========================
Fred Drake0e474a82007-10-11 18:01:43 +0000946
Guido van Rossum99533a92007-12-06 05:07:41 +0000947*Release date: 07-Dec-2007*
948
949(Note: this list is incomplete.)
Fred Drake0e474a82007-10-11 18:01:43 +0000950
Guido van Rossum40d20bc2007-10-22 00:09:51 +0000951Core and Builtins
952-----------------
953
Brett Cannon37f7e6e2007-10-26 05:42:09 +0000954- str8 now has the same construction signature as bytes.
955
Georg Brandl52b92cc2008-05-25 09:43:03 +0000956- Comparisons between str and str8 now return False/True for ==/!=.
957 sqlite3 returns str8 when recreating on object from it's __conform__
958 value. The struct module returns str8 for all string-related
959 formats. This was true before this change, but becomes more
960 apparent thanks to string comparisons always being False.
Brett Cannon40430012007-10-22 20:24:51 +0000961
Georg Brandl52b92cc2008-05-25 09:43:03 +0000962- Replaced `PyFile_FromFile()` with `PyFile_FromFd(fd, name. mode,
963 buffer, encoding, newline)`.
Guido van Rossum40d20bc2007-10-22 00:09:51 +0000964
965- Fixed `imp.find_module()` to obey the -*- coding: -*- header.
966
967- Changed `__file__` and `co_filename` to unicode. The path names are decoded
Antoine Pitrou6e1df8d2008-07-25 19:58:18 +0000968 with `Py_FileSystemDefaultEncoding` and a new API method
Guido van Rossum40d20bc2007-10-22 00:09:51 +0000969 `PyUnicode_DecodeFSDefault(char*)` was added.
970
Georg Brandl52b92cc2008-05-25 09:43:03 +0000971- io.open() and _fileio.FileIO have grown a new argument closefd. A
972 false value disables the closing of the file descriptor.
Guido van Rossum2dced8b2007-10-30 17:27:30 +0000973
Georg Brandl52b92cc2008-05-25 09:43:03 +0000974- Added a new option -b to issues warnings (-bb for errors) about
975 certain operations between bytes/buffer and str like str(b'') and
976 comparison.
Guido van Rossum98297ee2007-11-06 21:34:58 +0000977
Georg Brandl52b92cc2008-05-25 09:43:03 +0000978- The standards streams sys.stdin, stdout and stderr may be None when
979 the when the C runtime library returns an invalid file descriptor
980 for the streams (fileno(stdin) < 0). For now this happens only for
981 Windows GUI apps and scripts started with `pythonw.exe`.
Christian Heimes58cb1b82007-11-13 02:19:40 +0000982
Christian Heimesbce52be2007-11-17 19:08:41 +0000983- Added PCbuild9 directory for VS 2008.
984
Georg Brandl52b92cc2008-05-25 09:43:03 +0000985- Renamed structmember.h WRITE_RESTRICTED to PY_WRITE_RESTRICTED to
986 work around a name clash with VS 2008 on Windows.
Christian Heimesbce52be2007-11-17 19:08:41 +0000987
Georg Brandl52b92cc2008-05-25 09:43:03 +0000988- Unbound methods are gone for good. ClassObject.method returns an
989 ordinary function object, instance.method still returns a bound
990 method object. The API of bound methods is cleaned up, too. The
991 im_class attribute is removed and im_func + im_self are renamed to
992 __func__ and __self__. The factory PyMethod_New takes only func and
993 instance as argument.
Christian Heimesff737952007-11-27 10:40:20 +0000994
Georg Brandl52b92cc2008-05-25 09:43:03 +0000995- intobject.h is no longer included by Python.h. The remains were
996 moved to longobject.h. It still exists to define several aliases
997 from PyInt_ to PyLong_ functions.
Christian Heimesf78b1c62007-12-02 16:52:32 +0000998
Christian Heimesa37d4c62007-12-04 23:02:19 +0000999- Removed sys.maxint, use sys.maxsize instead.
1000
Fred Drake0e474a82007-10-11 18:01:43 +00001001Extension Modules
1002-----------------
1003
1004- The `hotshot` profiler has been removed; use `cProfile` instead.
1005
Brett Cannone9fd2312007-10-12 19:18:19 +00001006Library
1007-------
1008
Georg Brandl52b92cc2008-05-25 09:43:03 +00001009- When loading an external file using testfile(), the passed-in
1010 encoding argument was being ignored if __loader__ is defined and
1011 forcing the source to be UTF-8.
Brett Cannone9fd2312007-10-12 19:18:19 +00001012
Georg Brandl52b92cc2008-05-25 09:43:03 +00001013- The methods `os.tmpnam()`, `os.tempnam()` and `os.tmpfile()` have
1014 been removed in favor of the tempfile module.
Guido van Rossum687b9c02007-10-25 23:18:51 +00001015
Christian Heimesc9543e42007-11-28 08:28:28 +00001016- Removed the 'new' module.
1017
Georg Brandl52b92cc2008-05-25 09:43:03 +00001018- Removed all types from the 'types' module that are easily accessable
1019 through builtins.
Brett Cannone9fd2312007-10-12 19:18:19 +00001020
Georg Brandl52d168a2008-01-07 18:10:24 +00001021
Guido van Rossum4405cf32007-08-30 17:16:55 +00001022What's New in Python 3.0a1?
Guido van Rossum45aecf42006-03-15 04:58:47 +00001023==========================
Thomas Wouters4d70c3d2006-06-08 14:42:34 +00001024
Guido van Rossum4405cf32007-08-30 17:16:55 +00001025*Release date: 31-Aug-2007*
Neal Norwitz4886cc32006-08-21 17:06:07 +00001026
1027Core and Builtins
1028-----------------
1029
Martin v. Löwis47383402007-08-15 07:32:56 +00001030- PEP 3131: Support non-ASCII identifiers.
1031
Martin v. Löwis447d33e2007-07-29 18:10:01 +00001032- PEP 3120: Change default encoding to UTF-8.
1033
Martin v. Löwis9f2e3462007-07-21 17:22:18 +00001034- PEP 3123: Use proper C inheritance for PyObject.
1035
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001036- Removed the __oct__ and __hex__ special methods and added a bin()
1037 builtin function.
1038
Georg Brandl52b92cc2008-05-25 09:43:03 +00001039- PEP 3127: octal literals now start with "0o". Old-style octal
1040 literals are invalid. There are binary literals with a prefix of
1041 "0b". This also affects int(x, 0).
Guido van Rossumcd16bf62007-06-13 18:07:49 +00001042
Guido van Rossume7ba4952007-06-06 23:52:48 +00001043- None, True, False are now keywords.
1044
Guido van Rossum29478ef2007-05-29 00:39:44 +00001045- PEP 3119: isinstance() and issubclass() can be overridden.
1046
Guido van Rossumebe3e162007-05-17 18:20:34 +00001047- Remove BaseException.message.
1048
Guido van Rossum1bc535d2007-05-15 18:46:22 +00001049- Remove tuple parameter unpacking (PEP 3113).
1050
Georg Brandl52b92cc2008-05-25 09:43:03 +00001051- Remove the f_restricted attribute from frames. This naturally leads
1052 to the removal of PyEval_GetRestricted() and PyFrame_IsRestricted().
Guido van Rossuma8add0e2007-05-14 22:03:55 +00001053
Georg Brandl52b92cc2008-05-25 09:43:03 +00001054- PEP 3132 was accepted. That means that you can do ``a, *b =
1055 range(5)`` to assign 0 to a and [1, 2, 3, 4] to b.
Guido van Rossum0368b722007-05-11 16:50:42 +00001056
Georg Brandl52b92cc2008-05-25 09:43:03 +00001057- range() now returns an iterator rather than a list. Floats are not
1058 allowed. xrange() is no longer defined.
Guido van Rossum805365e2007-05-07 22:24:25 +00001059
Nick Coghlan650f0d02007-04-15 12:05:43 +00001060- Patch #1660500: hide iteration variable in list comps, add set comps
Georg Brandl52b92cc2008-05-25 09:43:03 +00001061 and use common code to handle compilation of iterative expressions.
Nick Coghlan650f0d02007-04-15 12:05:43 +00001062
Guido van Rossume27dc722007-03-27 22:37:34 +00001063- By default, != returns the opposite of ==, unless the latter returns
1064 NotImplemented.
1065
Georg Brandl52b92cc2008-05-25 09:43:03 +00001066- Patch #1680961: sys.exitfunc has been removed and replaced with a
1067 private C-level API.
Collin Winter670e6922007-03-21 02:57:17 +00001068
Georg Brandl801dd732007-03-18 20:18:31 +00001069- PEP 3115: new metaclasses: the metaclass is now specified as a
Georg Brandl52b92cc2008-05-25 09:43:03 +00001070 keyword arg in the class statement, which can now use the full
1071 syntax of a parameter list. Also, the metaclass can implement a
1072 __prepare__ function which will be called to create the dictionary
1073 for the new class namespace.
Georg Brandl801dd732007-03-18 20:18:31 +00001074
Georg Brandl428f0642007-03-18 18:35:15 +00001075- The long-deprecated argument "pend" of PyFloat_FromString() has been
1076 removed.
1077
Georg Brandle32b4222007-03-10 22:13:27 +00001078- The dir() function has been extended to call the __dir__() method on
Georg Brandl52b92cc2008-05-25 09:43:03 +00001079 its argument, if it exists. If not, it will work like before. This
1080 allows customizing the output of dir() in the presence of a
1081 __getattr__().
Brett Cannonba7bf492007-02-27 00:15:55 +00001082
Neal Norwitz8dfc4a92007-08-11 06:39:53 +00001083- Removed support for __members__ and __methods__.
1084
Georg Brandle32b4222007-03-10 22:13:27 +00001085- Removed indexing/slicing on BaseException.
Neal Norwitz2633c692007-02-26 22:22:47 +00001086
Georg Brandle32b4222007-03-10 22:13:27 +00001087- input() became raw_input(): the name input() now implements the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001088 functionality formerly known as raw_input(); the name raw_input() is
1089 no longer defined.
Guido van Rossum0240b922007-02-26 21:23:50 +00001090
Georg Brandl52b92cc2008-05-25 09:43:03 +00001091- Classes listed in an 'except' clause must inherit from
1092 BaseException.
Brett Cannonf74225d2007-02-26 21:10:16 +00001093
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001094- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;
Guido van Rossumcf1be882007-08-30 22:07:17 +00001095 and .keys(), .items(), .values() return dict views, which behave
1096 like sets.
Guido van Rossumcc2b0162007-02-11 06:12:03 +00001097
Guido van Rossum8b545362007-02-09 23:52:14 +00001098- PEP 3105: print is now a function. Also (not in the PEP) the
Georg Brandl52b92cc2008-05-25 09:43:03 +00001099 'softspace' attribute of files is now gone (since print() doesn't
1100 use it). A side effect of this change is that you can get
1101 incomplete output lines in interactive sessions:
Guido van Rossum8b545362007-02-09 23:52:14 +00001102
1103 >>> print(42, end="")
Kurt B. Kaiser2c7f3142007-08-30 21:52:19 +00001104 42>>>
Guido van Rossum8b545362007-02-09 23:52:14 +00001105
1106 We may be able to fix this after the I/O library rewrite.
Guido van Rossum4502c802007-02-09 05:42:38 +00001107
Brett Cannon398db8b2007-01-29 23:44:37 +00001108- PEP 3102: keyword-only arguments.
1109
Georg Brandl52b92cc2008-05-25 09:43:03 +00001110- Int/Long unification is complete. The 'long' built-in type and
1111 literals with trailing 'L' or 'l' have been removed. Performance
1112 may be sub-optimal (haven't really benchmarked).
Guido van Rossumab186842007-01-14 03:42:30 +00001113
1114- 'except E, V' must now be spelled as 'except E as V' and deletes V
1115 at the end of the except clause; V must be a simple name.
1116
Neal Norwitzc1505362006-12-28 06:47:50 +00001117- Added function annotations per PEP 3107.
1118
Georg Brandl52b92cc2008-05-25 09:43:03 +00001119- Added nonlocal declaration from PEP 3104:
Jeremy Hyltona4f9fc62007-02-27 15:53:28 +00001120
1121 >>> def f(x):
1122 ... def inc():
1123 ... nonlocal x
1124 ... x += 1
1125 ... return x
1126 ... return inc
1127 ...
1128 >>> inc = f(0)
1129 >>> inc()
1130 1
1131 >>> inc()
1132 2
1133
Georg Brandl66a796e2006-12-19 20:50:34 +00001134- Moved intern() to sys.intern().
1135
1136- exec is now a function.
1137
1138- Renamed nb_nonzero to nb_bool and __nonzero__ to __bool__.
Jack Diederich4dafcc42006-11-28 19:15:13 +00001139
Neal Norwitz4886cc32006-08-21 17:06:07 +00001140- Classic classes are a thing of the past. All classes are new style.
1141
1142- Exceptions *must* derive from BaseException.
1143
1144- Integer division always returns a float. The -Q option is no more.
1145 All the following are gone:
1146 * PyNumber_Divide and PyNumber_InPlaceDivide
1147 * __div__, __rdiv__, and __idiv__
1148 * nb_divide, nb_inplace_divide
1149 * operator.div, operator.idiv, operator.__div__, operator.__idiv__
1150 (Only __truediv__ and __floordiv__ remain, not sure how to handle them
1151 if we want to re-use __div__ and friends. If we do, it will make
1152 it harder to write code for both 2.x and 3.x.)
1153
1154- 'as' and 'with' are keywords.
1155
1156- Absolute import is the default behavior for 'import foo' etc.
1157
Georg Brandl52b92cc2008-05-25 09:43:03 +00001158- Removed support for syntax: backticks (ie, `x`), <>.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001159
Georg Brandl52b92cc2008-05-25 09:43:03 +00001160- Removed these Python builtins: apply(), callable(), coerce(),
1161 execfile(), file(), reduce(), reload().
Neal Norwitz4886cc32006-08-21 17:06:07 +00001162
Georg Brandl52b92cc2008-05-25 09:43:03 +00001163- Removed these Python methods: {}.has_key.
Neal Norwitz378b2c92006-08-29 07:57:22 +00001164
Georg Brandl52b92cc2008-05-25 09:43:03 +00001165- Removed these opcodes: BINARY_DIVIDE, INPLACE_DIVIDE, UNARY_CONVERT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001166
1167- Remove C API support for restricted execution.
1168
Guido van Rossumcf1be882007-08-30 22:07:17 +00001169- zip(), map() and filter() now return iterators, behaving like their
Georg Brandl52b92cc2008-05-25 09:43:03 +00001170 itertools counterparts. This also affect map()'s behavior on
Guido van Rossumcf1be882007-08-30 22:07:17 +00001171 sequences of unequal length -- it now stops after the shortest one
1172 is exhausted.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001173
Georg Brandl52b92cc2008-05-25 09:43:03 +00001174- Additions: set literals, set comprehensions, ellipsis literal.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001175
1176- Added class decorators per PEP 3129.
1177
1178
1179Extension Modules
1180-----------------
1181
Georg Brandl52b92cc2008-05-25 09:43:03 +00001182- Removed the imageop module. Obsolete long with its unit tests
1183 becoming useless from the removal of rgbimg and imgfile.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001184
Georg Brandl52b92cc2008-05-25 09:43:03 +00001185- Removed these attributes from the operator module: div, idiv,
1186 __div__, __idiv__, isCallable, sequenceIncludes.
1187
1188- Removed these attributes from the sys module: exc_clear(), exc_type,
1189 exc_value, exc_traceback.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001190
1191
1192Library
1193-------
1194
Georg Brandl52b92cc2008-05-25 09:43:03 +00001195- Removed the compiler package. Use of the _ast module and (an
1196 eventual) AST -> bytecode mechanism.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001197
Georg Brandl52b92cc2008-05-25 09:43:03 +00001198- Removed these modules: audiodev, Bastion, bsddb185, exceptions,
1199 linuxaudiodev, md5, MimeWriter, mimify, popen2, rexec, sets, sha,
1200 stringold, strop, sunaudiodev, timing, xmllib.
Guido van Rossum33d26892007-08-05 15:29:28 +00001201
Georg Brandl52b92cc2008-05-25 09:43:03 +00001202- Moved the toaiff module to Tools/Demos.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001203
Georg Brandl52b92cc2008-05-25 09:43:03 +00001204- Removed obsolete IRIX modules: al/AL, cd/CD, cddb, cdplayer, cl/CL,
1205 DEVICE, ERRNO, FILE, fl/FL, flp, fm, GET, gl/GL, GLWS, IN, imgfile,
1206 IOCTL, jpeg, panel, panelparser, readcd, sgi, sv/SV, torgb, WAIT.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001207
Georg Brandl52b92cc2008-05-25 09:43:03 +00001208- Removed obsolete functions: commands.getstatus(), os.popen*().
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001209
Georg Brandl52b92cc2008-05-25 09:43:03 +00001210- Removed functions in the string module that are also string methods;
Martin v. Löwis967f1e32007-08-14 09:23:10 +00001211 Remove string.{letters, lowercase, uppercase}.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001212
Georg Brandl52b92cc2008-05-25 09:43:03 +00001213- Removed support for long obsolete platforms: plat-aix3, plat-irix5.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001214
Georg Brandl52b92cc2008-05-25 09:43:03 +00001215- Removed xmlrpclib.SlowParser. It was based on xmllib.
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001216
1217- Patch #1680961: atexit has been reimplemented in C.
1218
Walter Dörwald41980ca2007-08-16 21:55:45 +00001219- Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
1220
Guido van Rossumd59da4b2007-05-22 18:11:13 +00001221Build
1222-----
1223
1224C API
1225-----
1226
Georg Brandl52b92cc2008-05-25 09:43:03 +00001227- Removed these Python slots: __coerce__, __div__, __idiv__, __rdiv__.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001228
Georg Brandl52b92cc2008-05-25 09:43:03 +00001229- Removed these C APIs: PyNumber_Coerce(), PyNumber_CoerceEx(),
1230 PyMember_Get, PyMember_Set.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001231
Georg Brandl52b92cc2008-05-25 09:43:03 +00001232- Removed these C slots/fields: nb_divide, nb_inplace_divide.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001233
Georg Brandl52b92cc2008-05-25 09:43:03 +00001234- Removed these macros: staticforward, statichere, PyArg_GetInt,
1235 PyArg_NoArgs, _PyObject_Del.
Neal Norwitz4886cc32006-08-21 17:06:07 +00001236
Georg Brandl52b92cc2008-05-25 09:43:03 +00001237- Removed these typedefs: intargfunc, intintargfunc, intobjargproc,
1238 intintobjargproc, getreadbufferproc, getwritebufferproc,
1239 getsegcountproc, getcharbufferproc, memberlist.
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001240
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001241Tests
1242-----
1243
Brett Cannone7a30f72008-03-03 03:36:27 +00001244- Removed test.testall as test.regrtest replaces it.
1245
Brett Cannonced04e02005-02-13 22:53:22 +00001246Documentation
1247-------------
1248
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001249Mac
1250---
1251
Georg Brandl52b92cc2008-05-25 09:43:03 +00001252- The cfmfile module was removed.
Guido van Rossume7ba4952007-06-06 23:52:48 +00001253
Guido van Rossum845702c2007-08-30 18:44:53 +00001254Platforms
1255---------
1256
1257- Support for BeOS and AtheOS was removed (according to PEP 11).
1258
1259- Support for RiscOS, Irix, Tru64 was removed (alledgedly).
1260
Raymond Hettinger4901a1f2004-12-02 08:59:14 +00001261Tools/Demos
1262-----------
1263
Georg Brandl52b92cc2008-05-25 09:43:03 +00001264
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00001265**(For information about older versions, consult the HISTORY file.)**