blob: 7f22b0d5b5accca2e9700207041e7bc7222da815 [file] [log] [blame]
Georg Brandlab6f2f62009-03-31 04:16:10 +00001+++++++++++
2Python News
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +00003+++++++++++
4
Anthony Baxterb0c66302004-11-04 05:23:17 +00005(editors: check NEWS.help for information about editing NEWS using ReST.)
6
Benjamin Petersonbd35b032009-04-04 23:16:41 +00007What's New in Python 3.1 beta 1?
8================================
9
10*Release date: XXXX-XX-XX*
11
12Core and Builtins
13-----------------
14
Benjamin Petersond2e0c792009-05-01 20:40:59 +000015- Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
16 received a new method, detach(). detach() disconnects the underlying stream
17 from the buffer or text IO and returns it.
18
Mark Dickinson33841c32009-05-01 15:37:04 +000019- Issue #5859: Remove switch from '%f' to '%g'-style formatting for
20 floats with absolute value over 1e50. Also remove length
21 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
22 12.34 no longer raise an exception.
Mark Dickinsonf489caf2009-05-01 11:42:00 +000023
Eric Smith58a42242009-04-30 01:00:33 +000024- Issue #1588: Add complex.__format__. For example,
25 format(complex(1, 2./3), '.5') now produces a sensible result.
26
Mark Dickinsond3ca5572009-04-29 18:47:07 +000027- Issue #5864: Fix empty format code formatting for floats so that it
28 never gives more than the requested number of significant digits.
29
Eric Smith6dc46f52009-04-27 20:39:49 +000030- Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
31 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
32
Eric Smithcc32a112009-04-26 21:35:14 +000033- Issue #5835: Deprecate PyOS_ascii_formatd.
34
Martin v. Löwis71efeb72009-04-26 01:02:07 +000035- Issue #4971: Fix titlecase for characters that are their own
36 titlecase, but not their own uppercase.
37
Benjamin Peterson193152c2009-04-25 01:08:45 +000038- Issue #5283: Setting __class__ in __del__ caused a segfault.
39
Mark Dickinsonad476da2009-04-23 19:14:16 +000040- Issue #5816: complex(repr(z)) now recovers z exactly, even when
41 z involves nans, infs or negative zeros.
42
Mark Dickinson4a16e3a2009-04-23 19:15:48 +000043- Issue #3166: Make int -> float conversions correctly rounded.
Mark Dickinsonc6300392009-04-20 21:38:00 +000044
Mark Dickinsone6a076d2009-04-18 11:48:33 +000045- Issue #1869 (and many duplicates): make round(x, n) correctly
46 rounded for a float x, by using the decimal <-> binary conversions
47 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
48 consistently agrees with format(x, '.2f').
49
Benjamin Petersonae937c02009-04-18 20:54:08 +000050- Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
51 some builtin types.
52
Eric Smith0923d1d2009-04-16 20:16:10 +000053- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
54
Eric Smith35e84722009-04-16 20:21:28 +000055- Issue #5515: str.format() type 'n' combined with commas and leading
56 zeros no longer gives odd results with ints and floats.
Eric Smith0923d1d2009-04-16 20:16:10 +000057
58- Implement PEP 378, Format Specifier for Thousands Separator, for
59 floats.
60
Mark Dickinson3370cce2009-04-17 22:40:53 +000061- The str function switches to exponential notation at
Mark Dickinsonb08a53a2009-04-16 19:52:09 +000062 1e11, not 1e12. This avoids printing 13 significant digits in
63 situations where only 12 of them are correct. Example problem
64 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
65 long time.)
66
Mark Dickinsonb08a53a2009-04-16 19:52:09 +000067- Issue #1580: On most platforms, use a 'short' float repr: for a
68 finite float x, repr(x) now outputs a string based on the shortest
69 sequence of decimal digits that rounds to x. Previous behaviour was
70 to output 17 significant digits and then strip trailing zeros.
Mark Dickinson3370cce2009-04-17 22:40:53 +000071 Another minor difference is that the new repr switches to
72 exponential notation at 1e16 instead of the previous 1e17; this
73 avoids misleading output in some cases.
Mark Dickinsonb08a53a2009-04-16 19:52:09 +000074
75 There's a new sys attribute sys.float_repr_style, which takes
76 the value 'short' to indicate that we're using short float repr,
77 and 'legacy' if the short float repr isn't available for one
78 reason or another.
79
80 The float repr change involves incorporating David Gay's 'perfect
81 rounding' code into the Python core (it's in Python/dtoa.c). As a
82 secondary consequence, all string-to-float and float-to-string
83 conversions (including all float formatting operations) will be
84 correctly rounded on these platforms.
85
86 See issue 1580 discussions for details of platforms for which
87 this change does not apply.
88
Benjamin Peterson2808d3c2009-04-15 21:34:27 +000089- Issue #5759: float() didn't call __float__ on str subclasses.
90
Georg Brandlabc38772009-04-12 15:51:51 +000091- The string.maketrans() function is deprecated; there is a new static method
92 maketrans() on the bytes and bytearray classes. This removes confusion about
93 the types string.maketrans() is supposed to work with, and mirrors the
94 methods available on the str class.
95
R. David Murraydc6da8a2009-04-09 22:16:43 +000096- Issue #2170: refactored xml.dom.minidom.normalize, increasing both
97 its clarity and its speed.
98
Matthias Klose091c7b12009-04-07 13:24:27 +000099- Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
100 to avoid compiler warnings.
101
Benjamin Peterson0b4915e2009-04-25 21:11:45 +0000102Installation
103------------
104
105- Issue #5756: Install idle and pydoc with a 3 suffix.
106
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000107Library
108-------
109
Benjamin Petersonc6b607d2009-05-02 12:36:44 +0000110- The json module now works exclusively with str and not bytes.
111
Gregory P. Smithe54dff52009-05-01 22:13:48 +0000112- Issue #3959: The ipaddr module has been added to the standard library.
113 Contributed by Google.
114
Antoine Pitrou7fff0962009-05-01 21:09:44 +0000115- Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
116 error when a named pipe is encountered, rather than blocking infinitely.
117
Raymond Hettinger1f0db402009-04-29 00:38:08 +0000118- Issue #5857: tokenize.tokenize() now returns named tuples.
119
Thomas Hellerc1edc2d2009-04-28 19:55:58 +0000120- Issue #4305: ctypes should now build again on mipsel-linux-gnu
121
Antoine Pitrou7a0fedf2009-04-27 22:31:40 +0000122- Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
123 string is already in normalized form, by performing a quick check beforehand.
124 Original patch by Rauli Ruohonen.
125
Antoine Pitrou57f3d932009-04-27 21:04:19 +0000126- Issue #5853: calling a function of the mimetypes module from several threads
127 at once could hit the recursion limit if the mimetypes database hadn't been
128 initialized before.
129
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000130- Issue #5854: Updated __all__ to include some missing names and remove some
131 names which should not be exported.
132
Thomas Heller34596a92009-04-24 20:50:00 +0000133- Issue #3102: All global symbols that the _ctypes extension defines
134 are now prefixed with 'Py' or '_ctypes'.
135
136- Issue #5041: ctypes does now allow pickling wide character.
137
Mark Dickinsond4d95f82009-04-24 14:06:19 +0000138- Issue #5812: For the two-argument form of the Fraction constructor,
139 Fraction(m, n), m and n are permitted to be arbitrary Rational
140 instances.
141
Mark Dickinsoncf63f2f2009-04-22 17:50:21 +0000142- Issue #5812: Fraction('1e6') is valid: more generally, any string
143 that's valid for float() is now valid for Fraction(), with the
144 exception of strings representing NaNs and infinities.
145
Antoine Pitroucf4c7492009-04-19 00:09:36 +0000146- Issue #5734: BufferedRWPair was poorly tested and had several glaring
147 bugs. Patch by Brian Quinlan.
148
R. David Murray9e94ddf2009-04-13 17:06:33 +0000149- Issue #1161031: fix readwrite select flag handling: POLLPRI now
150 results in a handle_expt_event call, not handle_read_event, and POLLERR
151 and POLLNVAL now call handle_close, not handle_expt_event. Also,
152 dispatcher now has an 'ignore_log_types' attribute for suppressing
153 log messages, which is set to 'warning' by default.
154
Matthias Klosea3d29e82009-04-07 13:13:10 +0000155- Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
156 new arguments introduced in 2.5.
157
Walter Dörwald1b08b302009-04-25 14:13:56 +0000158- Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
159 makeunicodedata.py and regenerated the Unicode database (This fixes
160 u'\u1d79'.lower() == '\x00').
161
Matthias Klose535336f2009-04-07 13:49:45 +0000162Extension Modules
163-----------------
164
Mark Dickinsonea835e72009-04-19 20:40:33 +0000165- Issue #5463: In struct module, remove deprecated float coercion
166 for integer type codes: struct.pack('L', 0.3) should now raise
167 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
168 The version number has been bumped to 0.3.
169
Matthias Klose535336f2009-04-07 13:49:45 +0000170- Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built
171 using Berkley-DB.
172
Nick Coghlan47384702009-04-22 16:13:36 +0000173Tests
174-----
175
176- Issue #5354: New test support function import_fresh_module() makes
177 it easy to import both normal and optimised versions of modules.
178 test_heapq and test_warnings have been adjusted to use it, tests for
179 other modules with both C and Python implementations in the stdlib
180 can be adjusted to use it over time.
181
Walter Dörwald4ba80132009-04-25 12:48:43 +0000182- Issue #5837: Certain sequences of calls to set() and unset() for
183 support.EnvironmentVarGuard objects restored the environment variables
184 incorrectly on __exit__.
185
Benjamin Petersonbd35b032009-04-04 23:16:41 +0000186
Benjamin Petersond1735892009-03-07 18:46:21 +0000187What's New in Python 3.1 alpha 2?
188=================================
189
Benjamin Peterson88f14352009-04-04 21:06:52 +0000190*Release date: 2009-4-4*
Benjamin Petersond1735892009-03-07 18:46:21 +0000191
192Core and Builtins
193-----------------
Benjamin Petersone099b372009-04-04 17:09:35 +0000194
Eric Smith1e1d7d22009-04-03 22:25:33 +0000195- Implement PEP 378, Format Specifier for Thousands Separator, for
196 integers.
Benjamin Petersond1735892009-03-07 18:46:21 +0000197
Benjamin Peterson8f76b492009-04-03 22:22:42 +0000198- Issue #5666: Py_BuildValue's 'c' code should create byte strings.
199
Benjamin Peterson7fe98532009-04-02 00:33:55 +0000200- Issue #5499: The 'c' code for argument parsing functions now only accepts a
201 byte, and the 'C' code only accepts a unicode character.
202
Georg Brandl406b3d82009-04-11 21:24:37 +0000203- Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
204 when hitting the recursion limit under certain circumstances.
205
Brett Cannon0759dd62009-04-01 18:13:07 +0000206- Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
207
Georg Brandlab6f2f62009-03-31 04:16:10 +0000208- Fix a segfault when running test_exceptions with coverage, caused by
209 insufficient checks in accessors of Exception.__context__.
210
Guido van Rossum0ad59d42009-03-30 22:01:35 +0000211- Issue #5604: non-ASCII characters in module name passed to
212 imp.find_module() were converted to UTF-8 while the path is
213 converted to the default filesystem encoding, causing nonsense.
214
Benjamin Peterson09832742009-03-26 17:15:46 +0000215- Issue #5126: str.isprintable() returned False for space characters.
216
Ronald Oussorenfa1fcd12009-03-30 23:16:10 +0000217- Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
218 the end sys.path, for compatibility with the system install of Python.
219
Antoine Pitrou3a652b12009-03-23 18:52:06 +0000220- Issue #4688: Add a heuristic so that tuples and dicts containing only
221 untrackable objects are not tracked by the garbage collector. This can
222 reduce the size of collections and therefore the garbage collection overhead
223 on long-running programs, depending on their particular use of datatypes.
224
Mark Dickinson17e4fdd2009-03-23 18:44:57 +0000225- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
226 improve its performance. Long divisions and remainder operations
227 are now between 50% and 150% faster.
228
Mark Dickinsonbd792642009-03-18 20:06:12 +0000229- Issue #4258: Make it possible to use base 2**30 instead of base
230 2**15 for the internal representation of integers, for performance
231 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
232 --enable-big-digits option to configure, which overrides the
233 default. Add sys.int_info structseq to provide information about
234 the internal format.
235
Mark Dickinson081dfee2009-03-18 14:47:41 +0000236- Issue #4474: PyUnicode_FromWideChar now converts characters outside
237 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
238 and sizeof(Py_UNICODE) == 2.
239
Eric Smith8ec90442009-03-14 12:29:34 +0000240- Issue #5237: Allow auto-numbered fields in str.format(). For
241 example: '{} {}'.format(1, 2) == '1 2'.
242
Antoine Pitrou652e7072009-03-13 19:25:20 +0000243- Issue #5392: when a very low recursion limit was set, the interpreter would
244 abort with a fatal error after the recursion limit was hit twice.
245
Matthias Klose042f1332009-04-04 14:32:42 +0000246- Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
247 short file names.
248
Benjamin Petersond1735892009-03-07 18:46:21 +0000249Library
250-------
251
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000252- Issue #2625: added missing items() call to the for loop in
R. David Murray548ac412009-04-02 19:44:43 +0000253 mailbox.MH.get_message().
254
Hye-Shik Chang944820b2009-04-02 10:33:16 +0000255- Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
256 error substitutions from non-strict codec error callbacks in
257 incrementalencoder and StreamWriter.
258
Georg Brandl33c28812009-04-01 23:07:29 +0000259- Issue #5656: Fix the coverage reporting when running the test suite with
260 the -T argument.
261
Raymond Hettinger3f10a952009-04-01 19:05:50 +0000262- Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
263
Georg Brandl4ed72ac2009-04-01 04:28:33 +0000264- Issue #5624: Fix the _winreg module name still used in several modules.
265
Benjamin Petersona1b49012009-03-31 23:11:32 +0000266- Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
267
Jesse Nollera9314042009-03-31 22:36:44 +0000268- Issue #5619: Multiprocessing children disobey the debug flag and causes
269 popups on windows buildbots. Patch applied to work around this issue.
270
Jesse Noller32d68c22009-03-31 18:48:42 +0000271- Issue #5400: Added patch for multiprocessing on netbsd compilation/support
272
Hirokazu Yamamoto16caab02009-03-31 13:44:06 +0000273- Issue #5387: Fixed mmap.move crash by integer overflow.
274
Jesse Nollerf8d00852009-03-31 03:25:07 +0000275- Issue #5261: Patch multiprocessing's semaphore.c to support context
276 manager use: "with multiprocessing.Lock()" works now.
277
Brett Cannon7f6b4f82009-03-30 21:30:26 +0000278- Issue #5236: Change time.strptime() to only take strings. Didn't work with
279 bytes already but the failure was non-obvious.
280
Jesse Noller7af4ef82009-03-30 16:47:15 +0000281- Issue #5177: Multiprocessing's SocketListener class now uses
282 socket.SO_REUSEADDR on all connections so that the user no longer needs
283 to wait 120 seconds for the socket to expire.
284
Benjamin Peterson48e24782009-03-29 13:02:52 +0000285- Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
286
Antoine Pitrou66994e12009-03-29 00:45:26 +0000287- Issue #1174606: Calling read() without arguments of an unbounded file
288 (typically /dev/zero under Unix) could crash the interpreter.
289
Benjamin Peterson59406a92009-03-26 17:10:29 +0000290- The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
291 io.BufferedRandom have been deprecated for removal in Python 3.2.
292
Lars Gustäbel42e00912009-03-22 20:34:29 +0000293- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
294 forever on incomplete input. That caused tarfile.open() to hang when used
295 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
296 partial bzip2 compressed data.
297
Mark Dickinson79f52032009-03-17 23:12:51 +0000298- Issue #2110: Add support for thousands separator and 'n' type
299 specifier to Decimal.__format__
300
Mark Dickinson9c59fe02009-03-17 18:15:08 +0000301- Fix Decimal.__format__ bug that swapped the meanings of the '<' and
302 '>' alignment characters.
303
Antoine Pitrou0ae29cf2009-03-13 22:33:17 +0000304- The error detection code in FileIO.close() could fail to reflect the `errno`
305 value, and report it as -1 instead.
306
Antoine Pitroua28fcfd2009-03-13 23:42:55 +0000307- Issue #5016: FileIO.seekable() could return False if the file position
308 was negative when truncated to a C int. Patch by Victor Stinner.
309
Mark Dickinsonae681df2009-03-21 10:26:31 +0000310Extension Modules
311-----------------
312
Benjamin Petersone099b372009-04-04 17:09:35 +0000313- Issue #5391: mmap now deals exclusively with bytes.
314
Mark Dickinsonae681df2009-03-21 10:26:31 +0000315- Issue #5463: In struct module, remove deprecated overflow wrapping
316 when packing an integer: struct.pack('=L', -1) now raises
Mark Dickinsonb40b9472009-03-29 16:58:21 +0000317 struct.error instead of returning b'\xff\xff\xff\xff'. The
318 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
319 have been removed from the struct module.
Mark Dickinsonae681df2009-03-21 10:26:31 +0000320
Benjamin Petersond1735892009-03-07 18:46:21 +0000321
Benjamin Petersona58a6262009-03-07 16:34:40 +0000322What's New in Python 3.1 alpha 1
Barry Warsaw97f005d2008-12-03 16:46:14 +0000323================================
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000324
Benjamin Petersona58a6262009-03-07 16:34:40 +0000325*Release date: 2009-03-07*
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000326
327Core and Builtins
328-----------------
329
Benjamin Peterson4fa88fa2009-03-04 00:14:51 +0000330- The io module has been reimplemented in C for speed.
331
Raymond Hettingerb0d56af2009-03-03 10:52:49 +0000332- Give dict views an informative __repr__.
333
Eric Smith5e5c0db2009-02-20 14:25:03 +0000334- Issue #5247: Improve error message when unknown format codes are
335 used when using str.format() with str, int, and float arguments.
336
Hirokazu Yamamoto575d1332009-02-16 09:13:20 +0000337- Issue #5249: time.strftime returned malformed string when format string
338 contained non ascii character on windows.
339
Benjamin Petersonf5b52242009-03-02 23:31:26 +0000340- Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
341 source has already been decoded into str.
342
Antoine Pitrou79eee6b2009-02-13 14:01:05 +0000343- Issue #5186: Reduce hash collisions for objects with no __hash__ method by
344 rotating the object pointer by 4 bits to the right.
345
Mark Dickinson87ec0852009-02-09 17:15:59 +0000346- Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
347 it now forces its argument to double before testing for infinity.
348
Benjamin Petersonee1ae7c2009-02-08 21:07:20 +0000349- Issue #5137: Make len() correctly raise a TypeError when a __len__ method
350 returns a non-number type.
351
Benjamin Peterson87618552009-02-08 15:00:52 +0000352- Issue #5182: Removed memoryview.__str__.
353
Mark Dickinsonc008a172009-02-01 13:59:22 +0000354- Issue #1717: Removed builtin cmp() function, dropped tp_compare
355 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
Mark Dickinsone94c6792009-02-02 20:36:42 +0000356 the type definition cmpfunc. The tp_compare slot has been renamed
357 to tp_reserved, and is reserved for future usage.
Mark Dickinsonf02e0aa2009-02-01 12:13:56 +0000358
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000359- Issue #1242657: the __len__() and __length_hint__() calls in several tools
Raymond Hettingere8364232009-02-02 22:55:09 +0000360 were suppressing all exceptions. These include list() and bytearray().
361
Mark Dickinson1124e712009-01-28 21:25:58 +0000362- Issue #4707: round(x, n) now returns an integer if x is an integer.
363 Previously it returned a float.
364
Antoine Pitroub52ec782009-01-25 16:34:23 +0000365- Issue #4753: By enabling a configure option named '--with-computed-gotos'
366 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
367 evaluation loop is compiled with a new dispatch mechanism which gives
368 speedups of up to 20%, depending on the system, on various benchmarks.
369
Antoine Pitrou81fabdb2009-01-22 10:11:36 +0000370- Issue #4874: Most builtin decoders now reject unicode input.
371
Mark Dickinson9ffc0202009-01-20 20:45:53 +0000372- Issue #4842: Don't allow trailing 'L' when constructing an integer
373 from a string.
374
Benjamin Peterson05e782f2009-01-19 15:15:02 +0000375- Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
376
Antoine Pitroue4bc7f62009-01-17 21:06:43 +0000377- Issue #4838: When a module is deallocated, free the memory backing the
378 optional module state data.
379
Mark Dickinson8055afd2009-01-17 10:04:45 +0000380- Issue #4910: Rename nb_long slot to nb_reserved, and change its
381 type to (void *).
382
Antoine Pitrou8d4e5052009-01-13 22:59:11 +0000383- Issue #4935: The overflow checking code in the expandtabs() method common
384 to str, bytes and bytearray could be optimized away by the compiler, letting
385 the interpreter segfault instead of raising an error.
386
Amaury Forgeot d'Arcf343e012009-01-12 23:58:21 +0000387- Issue #3720: Fix a crash when an iterator modifies its class and removes its
388 __next__ method.
389
Mark Dickinsone5e298f2009-01-12 20:49:19 +0000390- Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
391 function no longer attempt to call the __long__ slot to convert an object
392 to an integer. Only the __int__ and __trunc__ slots are examined.
393
Martin v. Löwis7c2b66c2009-01-12 08:21:03 +0000394- Issue #4893: Use NT threading on CE.
395
Martin v. Löwisec59d042009-01-12 07:59:10 +0000396- Issue #4915: Port sysmodule to Windows CE.
397
Antoine Pitrouab868312009-01-10 15:40:25 +0000398- Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
399 common cases are optimized thanks to a dedicated fast path and a moderate
400 amount of loop unrolling.
401
Antoine Pitrou14b78f52009-01-09 22:27:08 +0000402- Issue #4074: Change the criteria for doing a full garbage collection (i.e.
403 collecting the oldest generation) so that allocating lots of objects without
404 destroying them does not show quadratic performance. Based on a proposal by
405 Martin von Löwis at
406 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
407
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000408- Issue #4604: Some objects of the I/O library could still be used after
Antoine Pitrou8043cf82009-01-09 19:54:29 +0000409 having been closed (for instance, a read() call could return some
410 previously buffered data). Patch by Dmitry Vasiliev.
411
Antoine Pitrou05608432009-01-09 18:53:14 +0000412- Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
413 flag to work properly. Furthermore, when specifying -u, the text stdout
414 and stderr streams have line-by-line buffering enabled (the default being
415 to buffer arbitrary chunks of data).
416
Raymond Hettinger35631532009-01-09 03:58:09 +0000417- The internal table, _PyLong_DigitValue, is now an array of unsigned chars
418 instead of ints (reducing its size from 4 to 8 times thereby reducing
419 Python's overall memory).
420
Antoine Pitroud35cbf62009-01-06 19:02:24 +0000421- Issue #1180193: When importing a module from a .pyc (or .pyo) file with
422 an existing .py counterpart, override the co_filename attributes of all
423 code objects if the original filename is obsolete (which can happen if the
424 file has been renamed, moved, or if it is accessed through different paths).
425 Patch by Ziga Seilnacht and Jean-Paul Calderone.
426
Antoine Pitrouc3b39242009-01-03 16:59:18 +0000427- Issue #4580: Fix slicing of memoryviews when the item size is greater than
428 one byte. Also fixes the meaning of len() so that it returns the number of
429 items, rather than the size in bytes.
430
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000431- Issue #4075: Use OutputDebugStringW in Py_FatalError.
432
Amaury Forgeot d'Arc374e2202009-01-01 23:05:36 +0000433- Issue #4747: When the terminal does not use utf-8, executing a script with
434 non-ascii characters in its name could fail with a "SyntaxError: None" error.
435
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000436- Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
Hirokazu Yamamoto8ed9a802009-01-01 16:09:52 +0000437 file with `bytes' filename on Windows.
Hirokazu Yamamoto0f22d692009-01-01 16:03:45 +0000438
Antoine Pitrou7ddda782009-01-01 15:35:33 +0000439- Issue #3680: Reference cycles created through a dict, set or deque iterator
440 did not get collected.
441
Nick Coghlanf1f2f682008-12-30 07:29:12 +0000442- Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
443 where the tp_hash and tp_dict slots are both NULL.
444
Georg Brandlccc47b62008-12-28 11:44:14 +0000445- Issue #4759: None is now allowed as the first argument of
446 bytearray.translate(). It was always allowed for bytes.translate().
447
Skip Montanaro80072cb2008-12-23 03:51:14 +0000448- Added test case to ensure attempts to read from a file opened for writing
449 fail.
450
Antoine Pitrou51f3ef92008-12-20 13:14:23 +0000451- Issue #3106: Speedup some comparisons (str/str and int/int).
452
Antoine Pitrouf289ae62008-12-18 11:06:25 +0000453- Issue #2183: Simplify and optimize bytecode for list, dict and set
454 comprehensions. Original patch for list comprehensions by Neal Norwitz.
455
Antoine Pitrou621601a2008-12-17 23:18:19 +0000456- Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
457 print elapsed times, not only when some objects are uncollectable /
458 unreachable. Original patch by Neil Schemenauer.
459
Mark Dickinson54bc1ec2008-12-17 16:19:07 +0000460- Issue #3439: Add a bit_length method to int.
461
Mark Dickinsonda2706b2008-12-11 18:03:03 +0000462- Issue #2173: When getting device encoding, check that return value of
463 nl_langinfo is not the empty string. This was causing silent build
464 failures on OS X.
465
Jeffrey Yasskinb9083f32008-12-11 06:18:33 +0000466- Issue #4597: Fixed several opcodes that weren't always propagating
467 exceptions.
468
469- Issue #4589: Fixed exception handling when the __exit__ function of a
Amaury Forgeot d'Arc10b24e82008-12-10 23:49:33 +0000470 context manager returns a value that cannot be converted to a bool.
471
Mark Dickinsonfd24b322008-12-06 15:33:31 +0000472- Issue #4445: Replace "sizeof(PyBytesObject)" with
473 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
474 bytes instances. On a typical machine this saves 3 bytes of memory
475 (on average) per allocation of a bytes instance.
476
Christian Heimesa872de52008-12-05 08:26:55 +0000477- Issue #4533: File read operation was dreadfully slow due to a slowly
478 growing read buffer. Fixed by using the same growth rate algorithm as
479 Python 2.x.
480
Antoine Pitrou5504e892008-12-06 21:27:53 +0000481- Issue #4509: Various issues surrounding resize of bytearray objects to
482 which there are buffer exports (e.g. memoryview instances).
483
Georg Brandlf9734072008-12-07 15:30:06 +0000484- Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
485 method on file objects with closefd=False. The file descriptor is still
486 kept open but the file object behaves like a closed file. The ``FileIO``
487 object also got a new readonly attribute ``closefd``.
Matthias Klose7e1b8fa2008-11-26 17:22:04 +0000488
Antoine Pitroubc420402008-12-07 20:14:49 +0000489- Issue #4569: Interpreter crash when mutating a memoryview with an item size
490 larger than 1.
491
Benjamin Peterson371ccfb2008-12-27 19:03:36 +0000492- Issue #4748: Lambda generators no longer return a value.
493
Gregory P. Smithccc5ae72009-03-02 05:21:55 +0000494- The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
495
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000496Library
497-------
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000498
R. David Murrayb507d2e2009-04-29 15:34:32 +0000499- Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
500
Tarek Ziadé81623822009-04-29 08:07:44 +0000501- Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
502 anymore.
503
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000504- Issue #5810: Fixed Distutils test_build_scripts so it uses
Tarek Ziadé939f9c82009-04-25 12:53:56 +0000505 sysconfig.get_config_vars.
506
Tarek Ziadé23336082009-04-25 12:39:56 +0000507- Issue #4951: Fixed failure in test_httpservers.
508
Thomas Hellerd3cfe992009-04-24 20:10:24 +0000509- Issue #5795: Fixed test_distutils failure on Debian ppc.
510
Tarek Ziadé822e1d42009-04-13 12:37:57 +0000511- Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
512
Georg Brandl1f9fa312009-04-27 16:42:58 +0000513- Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
514 a value in SafeConfigParser.
515
Tarek Ziadéf396ecf2009-04-11 15:00:43 +0000516- Issue #5732: added a new command in Distutils: check.
517
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000518- Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
Tarek Ziadéa6191802009-04-09 22:02:39 +0000519 platforms. Initial patch by Paul Moore.
520
Tarek Ziadéf6370502009-04-05 22:57:21 +0000521- Issue #5095: Added bdist_msi to the list of bdist supported formats.
522 Initial fix by Steven Bethard.
523
Tarek Ziadé889b0aa2009-04-05 21:49:36 +0000524- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
525 Initial fix by Wayne Davison.
526
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000527- Issue #5694: removed spurious test output in Distutils (test_clean).
Tarek Ziadéea261632009-04-05 18:33:34 +0000528
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000529- Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
Georg Brandl236f7972009-04-05 14:28:42 +0000530
Brett Cannonf47e84c2009-04-01 16:06:01 +0000531- Issue #1665206 (partially): Move imports in cgitb to the top of the module
532 instead of performing them in functions. Helps prevent import deadlocking in
533 threads.
534
R. David Murraye59482e2009-04-01 03:42:00 +0000535- Issue #2522: locale.format now checks its first argument to ensure it has
536 been passed only one pattern, avoiding mysterious errors where it appeared
537 that it was failing to do localization.
538
Tarek Ziadéb2e36f12009-03-31 22:37:55 +0000539- Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
540 Brandl.
541
Antoine Pitrou350370c2009-03-14 00:13:13 +0000542- Issue #1222: locale.format() bug when the thousands separator is a space
543 character.
544
Tarek Ziadé516db942009-03-11 12:52:00 +0000545- Issue #5472: Fixed distutils.test_util tear down. Original patch by
546 Tim Golden.
547
Raymond Hettinger5bb0f0e2009-03-10 12:56:32 +0000548- collections.deque() objects now have a read-only attribute called maxlen.
549
Guilherme Polof45b4cc2009-03-07 02:19:14 +0000550- Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
551 it is has been populated and properly configured in order to prevent
552 window flashing.
553
Guilherme Polo56f5be52009-03-07 01:54:57 +0000554- Issue #4792: Prevent a segfault in _tkinter by using the
555 guaranteed to be safe interp argument given to the PythonCmd in place of
556 the Tcl interpreter taken from a PythonCmd_ClientData.
557
558- Issue #5193: Guarantee that tkinter.Text.search returns a string.
559
Tarek Ziadé63b64c02009-03-07 00:51:53 +0000560- Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
561 Original patch by Akira Kitada.
562
Hirokazu Yamamoto54d0df62009-03-06 03:04:07 +0000563- Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
564
Hirokazu Yamamoto8e722bc2009-03-05 14:33:01 +0000565- Issue #5385: Fixed mmap crash after resize failure on windows.
566
Hirokazu Yamamoto0c988172009-03-03 22:41:26 +0000567- Issue #5179: Fixed subprocess handle leak on failure on windows.
568
Raymond Hettinger2d32f632009-03-02 21:24:57 +0000569- PEP 372: Added collections.OrderedDict().
570
Raymond Hettingera4f52b12009-03-02 22:28:31 +0000571- The _asdict() for method for namedtuples now returns an OrderedDict().
572
Raymond Hettinger0663a1e2009-03-02 23:06:00 +0000573- configparser now defaults to using an ordered dictionary.
574
Benjamin Petersone0124bd2009-03-09 21:04:33 +0000575- Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
576 import guess_extension`` was used.
577
Hirokazu Yamamoto10c99372009-02-28 12:21:53 +0000578- Issue #1733986: Fixed mmap crash in accessing elements of second map object
579 with same tagname but larger size than first map. (Windows)
580
Hirokazu Yamamoto39c6dea2009-02-28 10:56:50 +0000581- Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
582 overrun.
583
Tarek Ziadéf0721222009-02-28 10:16:43 +0000584- Issue #1533164: Installed but not listed *.pyo was breaking Distutils
585 bdist_rpm command.
586
587- Issue #5378: added --quiet option to Distutils bdist_rpm command.
588
Tarek Ziadé38e3d512009-02-27 12:58:56 +0000589- Issue #5052: make Distutils compatible with 2.3 again.
590
Tarek Ziadé0f31e6d2009-02-25 22:31:38 +0000591- Issue #5316: Fixed buildbot failures introduced by multiple inheritance
592 in Distutils tests.
Barry Warsawd8ccd1c2008-11-21 15:13:37 +0000593
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000594- Issue #5287: Add exception handling around findCaller() call to help out
595 IronPython.
596
Hirokazu Yamamoto0654ccd2009-02-18 16:38:00 +0000597- Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
598 The file was resized to wrong size.
599
600- Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
601
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000602- Issue #2279: distutils.sdist.add_defaults now add files
Tarek Ziadé0d0506e2009-02-16 21:49:12 +0000603 from the package_data and the data_files metadata.
604
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000605- Issue #5257: refactored all tests in distutils, so they use
Tarek Ziadéc1375d52009-02-14 14:35:51 +0000606 support.TempdirManager, to avoid writing in the tests directory.
607
Tarek Ziadé68c50952009-02-13 23:04:17 +0000608- Issue #4524: distutils build_script command failed with --with-suffix=3.
609 Initial patch by Amaury Forgeot d'Arc.
610
Tarek Ziadé811d6242009-02-13 22:26:15 +0000611- Issue #2461: added tests for distutils.util
612
Mark Dickinsonc28ad272009-02-12 17:58:36 +0000613- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
614 which inherited from numbers.py which did not have __slots__ defined. The
615 numbers hierarchy now has its own __slots__ declarations.
616
Antoine Pitroub353c122009-02-11 00:39:14 +0000617- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
618 encoding.
619
Thomas Heller465c8022009-02-10 18:59:04 +0000620- Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
621 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
622
Tarek Ziadé7d5e9872009-02-10 12:36:33 +0000623- Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
624 under NT and OS2. Patch by Philip Jenvey.
625
Brett Cannonbefb14f2009-02-10 02:10:16 +0000626- Issue #5128: Make compileall properly inspect bytecode to determine if needs
627 to be recreated. This avoids a timing hole thanks to the old reliance on the
628 ctime of the files involved.
629
Guilherme Polob681df42009-02-09 22:33:59 +0000630- Issue #5122: Synchronize tk load failure check to prevent a potential
631 deadlock.
632
Benjamin Petersona86f2c02009-02-10 02:41:10 +0000633- Issue #1818: collections.namedtuple() now supports a keyword argument
634 'rename' which lets invalid fieldnames be automatically converted to
635 positional names in the form, _1, _2, ...
636
Guilherme Poloae098992009-02-09 16:44:24 +0000637- Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
638
Nick Coghlan9a1d6e32009-02-08 03:37:27 +0000639- Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
640 public documented method ``ZipImporter.get_filename()``.
641
Nick Coghlan3f48ae32009-02-08 01:58:26 +0000642- Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
643 the execution of packages by looking for and executing a ``__main__``
644 submodule when a package name is supplied. Initial patch by Andi
645 Vajda.
646
Guilherme Polo491aee22009-02-06 23:16:11 +0000647- Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
648 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
649 Tkapp_Call when calling from a thread different than the one that created
650 the Tcl interpreter. Patch by Robert Hancock.
651
Eric Smith0e5b5622009-02-06 01:32:42 +0000652- Issue #4285: Change sys.version_info to be a named tuple. Patch by
653 Ross Light.
654
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000655- Issue #1520877: Now distutils.sysconfig reads $AR from the
Tarek Ziadéd3409de2009-02-06 01:18:36 +0000656 environment/Makefile. Patch by Douglas Greiman.
657
Tarek Ziadé70a74eb2009-02-06 00:38:35 +0000658- Issue #1276768: The verbose option was not used in the code of
659 distutils.file_util and distutils.dir_util.
660
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000661- Issue #5132: Fixed trouble building extensions under Solaris with
Tarek Ziadé5874ef12009-02-05 22:56:14 +0000662 --enabled-shared activated. Initial patch by Dave Peterson.
663
Guilherme Polo7f423952009-02-02 21:17:09 +0000664- Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
665
Raymond Hettinger85602262009-02-03 04:19:10 +0000666- The shelve module now defaults to pickle protocol 3.
667
Brett Cannone61426e2009-01-30 01:31:34 +0000668- Fix a bug in the trace module where a bytes object from co_lnotab had its
669 items being passed through ord().
670
Antoine Pitrou0dcc3cd2009-01-29 20:26:59 +0000671- Issue #2047: shutil.move() could believe that its destination path was
672 inside its source path if it began with the same letters (e.g. "src" vs.
673 "src.new").
674
Guilherme Polo5f238482009-01-28 14:41:10 +0000675- Added the ttk module. See issue #2983: Ttk support for Tkinter.
676
Raymond Hettinger89e12962009-01-26 02:09:03 +0000677- Removed isSequenceType(), isMappingType, and isNumberType() from the
678 operator module; use the abstract base classes instead. Also removed
679 the repeat() function; use mul() instead.
680
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000681- Issue #5021: doctest.testfile() did not create __name__ and
Raymond Hettinger0f055172009-01-27 10:06:09 +0000682 collections.namedtuple() relied on __name__ being defined.
683
684- Backport importlib from Python 3.1. Only the import_module() function has
685 been backported to help facilitate transitions from 2.7 to 3.1.
686
Tarek Ziadé0302cf52009-01-26 17:23:20 +0000687- Issue #1885: distutils. When running sdist with --formats=tar,gztar
688 the tar file was overriden by the gztar one.
689
Tarek Ziadé4d4456f2009-01-25 18:27:45 +0000690- Issue #4863: distutils.mwerkscompiler has been removed.
691
Raymond Hettingerd07d9392009-01-27 04:20:44 +0000692- Added a new itertools functions: combinations_with_replacement()
693 and compress().
Raymond Hettinger6b3b0fc2009-01-26 02:56:58 +0000694
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000695- Issue #5032: added a step argument to itertools.count() and
Raymond Hettinger30729212009-02-12 06:28:27 +0000696 allowed non-integer arguments.
697
Jesse Noller41faa542009-01-25 03:45:53 +0000698- Fix and properly document the multiprocessing module's logging
699 support, expose the internal levels and provide proper usage
700 examples.
701
Mark Dickinsoncddcf442009-01-24 21:46:33 +0000702- Issue #1672332: fix unpickling of subnormal floats, which was
703 producing a ValueError on some platforms.
704
Martin v. Löwisacbf4612009-01-24 16:19:45 +0000705- Issue #3881: Help Tcl to load even when started through the
706 unreadable local symlink to "Program Files" on Vista.
707
Martin v. Löwis59e47792009-01-24 14:10:07 +0000708- Issue #4710: Extract directories properly in the zipfile module;
709 allow adding directories to a zipfile.
710
Vinay Sajipb672b6d2009-02-19 12:36:11 +0000711- Issue #3807: _multiprocessing build fails when configure is passed
Jesse Noller6fd47e22009-01-23 14:09:08 +0000712 --without-threads argument. When this occurs, _multiprocessing will
713 be disabled, and not compiled.
714
Antoine Pitrou08838b62009-01-21 00:55:13 +0000715- Issue #5008: When a file is opened in append mode with the new IO library,
716 do an explicit seek to the end of file (so that e.g. tell() returns the
717 file size rather than 0). This is consistent with the behaviour of the
718 traditional 2.x file object.
719
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000720- Issue #5013: Fixed a bug in FileHandler which occurred when the delay
721 parameter was set.
722
Mark Dickinson8dd05142009-01-20 20:43:58 +0000723- Issue #4842: Always append a trailing 'L' when pickling longs using
724 pickle protocol 0. When reading, the 'L' is optional.
725
Brett Cannonafccd632009-01-20 02:21:27 +0000726- Add the importlib package.
727
Jesse Noller9a0fc972009-01-18 21:12:58 +0000728- Issue #4301: Patch the logging module to add processName support, remove
729 _check_logger_class from multiprocessing.
730
Jesse Noller1cbb17a2009-01-18 19:45:18 +0000731- Issue #3325: Remove python2.x try: except: imports for old cPickle from
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000732 multiprocessing.
Jesse Nollerf70a5382009-01-18 19:44:02 +0000733
Benjamin Peterson9953a8d2009-01-17 04:15:01 +0000734- Issue #4959: inspect.formatargspec now works for keyword only arguments
735 without defaults.
736
Jesse Noller6214edd2009-01-19 16:23:53 +0000737- Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
738 for *nix machines for negative handles and large int handles. Without this check
739 it is possible to segfault the interpreter.
740
Jesse Nollerb0516a62009-01-18 03:11:38 +0000741- Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
742 in sharedctypes.py.
743
744- Issue #1225107: inspect.isclass() returned True for instances with a custom
745 __getattr__.
746
Gregory P. Smithde3369f2009-01-12 04:50:11 +0000747- Issue #3826 and #4791: The socket module now closes the underlying socket
748 appropriately when it is being used via socket.makefile() objects
749 rather than delaying the close by waiting for garbage collection to do it.
750
Raymond Hettingerb8baf632009-01-14 02:20:07 +0000751- Issue #1696199: Add collections.Counter() for rapid and convenient
752 counting.
753
Antoine Pitrou308705e2009-01-10 16:22:51 +0000754- Issue #3860: GzipFile and BZ2File now support the context manager protocol.
755
Thomas Heller5e4e4272009-01-08 09:34:20 +0000756- Issue #4867: Fixed a crash in ctypes when passing a string to a
757 function without defining argtypes.
758
Antoine Pitrou42db3ef2009-01-04 21:37:59 +0000759- Issue #4272: Add an optional argument to the GzipFile constructor to override
760 the timestamp in the gzip stream. The default value remains the current time.
761 The information can be used by e.g. gunzip when decompressing. Patch by
762 Jacques Frechet.
763
Mark Dickinson315a20a2009-01-04 21:34:18 +0000764- Restore Python 2.3 compatibility for decimal.py.
765
Guilherme Polo3f5f8222009-01-03 22:00:39 +0000766- Issue #3638: Remove functions from _tkinter module level that depend on
767 TkappObject to work with multiple threads.
768
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000769- Issue #4718: Adapt the wsgiref package so that it actually works with
770 Python 3.x, in accordance with the `official amendments of the spec
Antoine Pitrou38a66ad2009-01-03 18:41:49 +0000771 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
772
Raymond Hettinger771ed762009-01-03 19:20:32 +0000773- Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
774 to the decimal module.
775
Georg Brandl3a9b0622009-01-03 22:07:57 +0000776- Fractions.from_float() no longer loses precision for integers too big to
777 cast as floats.
778
Mark Dickinsonf9236412009-01-02 23:23:21 +0000779- Issue #4812: add missing underscore prefix to some internal-use-only
780 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
781
Georg Brandl1cdd83c2009-04-05 20:24:29 +0000782- Issue #4790: The nsmallest() and nlargest() functions in the heapq module
Georg Brandl3a9b0622009-01-03 22:07:57 +0000783 did unnecessary work in the common case where no key function was specified.
784
Georg Brandlb1441c72009-01-03 22:33:39 +0000785- Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
786 the function is not a generator.
787
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000788- Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
789 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Tarek Ziadé9df8ce32008-12-30 23:09:20 +0000790
Vinay Sajip6268cbc2009-01-21 00:19:28 +0000791- Issue #4646: distutils was choking on empty options arg in the setup
Tarek Ziadé4450dcf2008-12-29 22:38:38 +0000792 function. Original patch by Thomas Heller.
793
Martin v. Löwis1f1620e2008-12-29 16:27:13 +0000794- Issue #3767: Convert Tk object to string in tkColorChooser.
795
Martin v. Löwise354d782008-12-29 16:03:04 +0000796- Issue #3248: Allow placing ScrolledText in a PanedWindow.
797
Antoine Pitrou5acd41e2008-12-28 14:29:00 +0000798- Issue #4444: Allow assertRaises() to be used as a context handler, so that
799 the code under test can be written inline if more practical.
800
Georg Brandldb7b6b92009-01-01 15:53:14 +0000801- Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
802 works as expected in the interactive environment.
803
Antoine Pitroudb5fe662008-12-27 15:50:40 +0000804- Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
805 Gabriel Genellina.
806
Antoine Pitrou180a3362008-12-14 16:36:46 +0000807- Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
808 boundary.
809
Nick Coghlanf088e5e2008-12-14 11:50:48 +0000810- Issue #4223: inspect.getsource() will now correctly display source code
811 for packages loaded via zipimport (or any other conformant PEP 302
812 loader). Original patch by Alexander Belopolsky.
813
814- Issue #4201: pdb can now access and display source code loaded via
815 zipimport (or any other conformant PEP 302 loader). Original patch by
816 Alexander Belopolsky.
817
818- Issue #4197: doctests in modules loaded via zipimport (or any other PEP
819 302 conformant loader) will now work correctly in most cases (they
820 are still subject to the constraints that exist for all code running
821 from inside a module loaded via a PEP 302 loader and attempting to
822 perform IO operations based on __file__). Original patch by
823 Alexander Belopolsky.
824
825- Issues #4082 and #4512: Add runpy support to zipimport in a manner that
826 allows backporting to maintenance branches. Original patch by
827 Alexander Belopolsky.
828
Antoine Pitrou7c59bc62008-12-13 23:20:54 +0000829- Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
830 a non-ASCII letter.
831
Lars Gustäbel43fcf3a2008-12-12 14:58:38 +0000832- Issue #4616: TarFile.utime(): Restore directory times on Windows.
833
Benjamin Peterson433f32c2008-12-12 01:25:05 +0000834- Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
835 codec cannot be found. This is for compatibility with the builtin behavior.
836
Facundo Batista708d5812008-12-11 04:20:07 +0000837- Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
838 give correct results in the case where one argument is a quiet NaN
839 and the other is a finite number that requires rounding.
840
Skip Montanaroc1ce2862008-12-06 17:25:02 +0000841- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
842 libs.
843
Georg Brandlf9734072008-12-07 15:30:06 +0000844- Added the subprocess.check_call_output() convenience function to get output
845 from a subprocess on success or raise an exception on error.
846
847- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
848 support unusual filenames (such as those containing semi-colons) in
849 Content-Disposition headers.
850
851- Issue #4384: Added logging integration with warnings module using
852 captureWarnings(). This change includes a NullHandler which does nothing;
853 it will be of use to library developers who want to avoid the "No handlers
854 could be found for logger XXX" message which can appear if the library user
855 doesn't configure logging.
856
857- Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
858 exception.
859
Georg Brandleee31162008-12-07 15:15:22 +0000860- Issue #4529: fix the parser module's validation of try-except-finally
861 statements.
862
863- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
864 not a malformed option.
865
866- Added the subprocess.check_output() convenience function to get output
867 from a subprocess on success or raise an exception on error.
868
Amaury Forgeot d'Arcbc9d4742008-12-05 01:40:43 +0000869- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
870 the corresponding tests now pass.
871
Amaury Forgeot d'Arcbc2ce572008-12-05 01:02:21 +0000872- Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
873 it was calling the wrong open() function.
874
Fred Drake9a0a65b2008-12-04 19:24:50 +0000875- Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
876 support unusual filenames (such as those containing semi-colons) in
877 Content-Disposition headers.
878
Matthias Klose2c7e3ee2009-01-10 17:08:25 +0000879- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
880 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
881
Benjamin Peterson5c6d7872009-02-06 02:40:07 +0000882- Issue #5104: The socket module now raises OverflowError when 16-bit port and
883 protocol numbers are supplied outside the allowed 0-65536 range on bind()
884 and getservbyport().
885
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000886Tools/Demos
887-----------
888
Antoine Pitrou8a681222009-02-07 17:13:31 +0000889- Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
890 and make it 2.6-compatible.
891
Guilherme Poloa7d27972009-01-28 16:06:51 +0000892- Ttk demos added in Demo/tkinter/ttk/
893
Antoine Pitrou2a013ea2008-12-27 20:39:28 +0000894- Issue #4677: add two list comprehension tests to pybench.
895
Georg Brandlb1441c72009-01-03 22:33:39 +0000896
897Build
898-----
899
Antoine Pitrou8966c992009-05-01 21:18:27 +0000900- Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
901 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
902
Matthias Klose55708cc2009-04-30 08:06:49 +0000903- Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
904 the order that backends for the dbm extension are checked.
905
Matthias Klose906785c2009-02-22 23:18:38 +0000906- Link the shared python library with $(MODLIBS).
907
Martin v. Löwis11f72102009-02-10 13:13:30 +0000908- Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
909
Martin v. Löwisbc186a82009-02-02 15:32:22 +0000910- Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
911
Martin v. Löwise97637d2009-01-11 09:45:11 +0000912- Issue #4895: Use _strdup on Windows CE.
913
Georg Brandlb1441c72009-01-03 22:33:39 +0000914- Issue #4472: "configure --enable-shared" now works on OSX
915
916- Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
917
918- Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
919
920- Issue #4289: Remove Cancel button from AdvancedDlg.
921
922- Issue #1656675: Register a drop handler for .py* files on Windows.
923
924- Issue #4120: Exclude manifest from extension modules in VS2008.
925
926- Issue #4091: Install pythonxy.dll in system32 again.
927
928- Issue #4018: Disable "for me" installations on Vista.
929
930- Issue #3758: Add ``patchcheck`` build target to .PHONY.
931
932- Issue #4204: Fixed module build errors on FreeBSD 4.
933
934
935C-API
936-----
937
Mark Dickinson21776072009-02-10 16:13:25 +0000938- Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
939 for negative arguments. Previously, it raised TypeError.
940
Georg Brandlb1441c72009-01-03 22:33:39 +0000941- Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
942
943- Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
944 the GIL is released, or owned by another thread.
945
946- Issue #4122: On Windows, fix a compilation error when using the
947 Py_UNICODE_ISSPACE macro in an extension module.
948
949
Mark Dickinsone675f082008-12-11 21:56:00 +0000950Extension Modules
951-----------------
952
Gregory P. Smith365a1862009-02-12 07:35:29 +0000953- Issue #3745: Fix hashlib to always reject unicode and non buffer-api
954 supporting objects as input no matter how it was compiled (built in
955 implementations or external openssl library).
956
Mark Dickinson29500f62009-01-15 15:36:10 +0000957- Issue #4397: Fix occasional test_socket failure on OS X.
958
Martin v. Löwisa9b54c72009-01-11 09:30:50 +0000959- Issue #4279: Fix build of parsermodule under Cygwin.
960
Antoine Pitroubcd5cbe2009-01-08 21:17:16 +0000961- Issue #4751: hashlib now releases the GIL when hashing large buffers
962 (with a hardwired threshold of 2048 bytes), allowing better parallelization
963 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
964
Martin v. Löwis5c88d812009-01-02 20:47:48 +0000965- Issue #4051: Prevent conflict of UNICODE macros in cPickle.
966
Antoine Pitrou31f30b12009-01-02 17:34:35 +0000967- Issue #4738: Each zlib object now has a separate lock, allowing to compress
968 or decompress several streams at once on multi-CPU systems. Also, the GIL
969 is now released when computing the CRC of a large buffer. Patch by ebfe.
970
Georg Brandlb1441c72009-01-03 22:33:39 +0000971- Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
972
Martin v. Löwis05bfe1f2008-12-29 18:21:47 +0000973- Issue #1040026: Fix os.times result on systems where HZ is incorrect.
974
Mark Dickinsone675f082008-12-11 21:56:00 +0000975- Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
976 OpenBSD.
Amaury Forgeot d'Arcefae8c42008-11-21 23:08:09 +0000977
Antoine Pitrou3ad3a0d2008-12-18 17:08:32 +0000978- Issue #4583: array.array would not always prohibit resizing when a buffer
979 has been exported, resulting in an interpreter crash when accessing the
980 buffer.
981
Martin v. Löwis841edad2008-11-30 10:36:49 +0000982
Jack Diederiche0cbd692009-04-01 04:27:09 +0000983- Issue #5228: Make functools.partial objects can now be pickled.
984
Guilherme Polo9de29af2009-01-28 20:40:48 +0000985Tests
986-----
987
R. David Murraya21e4ca2009-03-31 23:16:50 +0000988- regrtest no longer treats ImportError as equivalent to SkipTest. Imports
Vinay Sajipad5fa2f2009-04-27 13:55:05 +0000989 that should cause a test to be skipped are now done using import_module
R. David Murraya21e4ca2009-03-31 23:16:50 +0000990 from test support, which does the conversion.
991
Guilherme Polo9de29af2009-01-28 20:40:48 +0000992- Issue #5083: New 'gui' resource for regrtest.
993
994
Brett Cannon7317c1e2008-11-25 19:19:17 +0000995Docs
996----
997
Georg Brandl52b92cc2008-05-25 09:43:03 +0000998
Skip Montanaroe5d7f7f2002-09-20 14:16:59 +0000999**(For information about older versions, consult the HISTORY file.)**