5 What's New in Python 3.1.3?
6 ===========================
8 *Release date: 20XX-XX-XX*
13 - Issue #10006: type.__abstractmethods__ now raises an AttributeError. As a
14 result metaclasses can now be ABCs (see #9533).
16 - Issue #9930: Remove bogus subtype check that was causing (e.g.)
17 float.__rdiv__(2.0, 3) to return NotImplemented instead of the
20 - Issue #9804: ascii() now always represents unicode surrogate pairs as
21 a single ``\UXXXXXXXX``, regardless of whether the character is printable
22 or not. Also, the "backslashreplace" error handler now joins surrogate
23 pairs into a single character on UCS-2 builds.
25 - Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid
26 thread-local storage key.
28 - Issue #9737: Fix a crash when trying to delete a slice or an item from
31 - Issue #7415: PyUnicode_FromEncodedObject() now uses the new buffer API
32 properly. Patch by Stefan Behnel.
34 - Restore GIL in nis_cat in case of error.
36 - Issue #9712: Fix tokenize on identifiers that start with non-ascii names.
38 - Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t.
40 - Issue #5319: Print an error if flushing stdout fails at interpreter
43 - Issue #8814: function annotations (the ``__annotations__`` attribute)
44 are now included in the set of attributes copied by default by
45 functools.wraps and functools.update_wrapper. Patch by Terrence Cole.
47 - Issue #83755: Implicit set-to-frozenset conversion was not thread-safe.
49 - Issue #10068: Global objects which have reference cycles with their module's
50 dict are now cleared again. This causes issue #7140 to appear again.
52 - Issue #9416: Fix some issues with complex formatting where the
53 output with no type specifier failed to match the str output:
55 - format(complex(-0.0, 2.0), '-') omitted the real part from the output,
56 - format(complex(0.0, 2.0), '-') included a sign and parentheses.
58 - Issue #7616: Fix copying of overlapping memoryview slices with the Intel
61 - Issue #8271: during the decoding of an invalid UTF-8 byte sequence, only the
62 start byte and the continuation byte(s) are now considered invalid, instead
63 of the number of bytes specified by the start byte.
64 E.g.: '\xf1\x80AB'.decode('utf-8', 'replace') now returns u'\ufffdAB' and
65 replaces with U+FFFD only the start byte ('\xf1') and the continuation byte
66 ('\x80') even if '\xf1' is the start byte of a 4-bytes sequence.
67 Previous versions returned a single u'\ufffd'.
69 - Issue #6543: Write the traceback in the terminal encoding instead of utf-8.
70 Fix the encoding of the modules filename. Patch written by Amaury Forgeot
73 - Issue #9058: Remove assertions about INT_MAX in UnicodeDecodeError.
75 - Issue #8941: decoding big endian UTF-32 data in UCS-2 builds could crash
76 the interpreter with characters outside the Basic Multilingual Plane
77 (higher than 0x10000).
79 - In the str.format(), raise a ValueError when indexes to arguments are too
82 - Issue #8766: Initialize _warnings module before importing the first module.
83 Fix a crash if an empty directory called "encodings" exists in sys.path.
85 - PyObject_Dump() encodes unicode objects to utf8 with backslashreplace
86 (instead of strict) error handler to escape surrogates
88 - Issue #8124: PySys_WriteStdout() and PySys_WriteStderr() don't execute
89 indirectly Python signal handlers anymore because mywrite() ignores
90 exceptions (KeyboardInterrupt)
92 - Issue #8092: Fix PyUnicode_EncodeUTF8() to support error handler producing
93 unicode string (eg. backslashreplace)
95 - Issue #8014: Setting a T_UINT or T_PYSSIZET attribute of an object with
96 PyMemberDefs could produce an internal error; raise TypeError instead.
98 - Issue #8417: Raise an OverflowError when an integer larger than sys.maxsize is
99 passed to bytes or bytearray.
101 - Issue #8329: Don't return the same lists from select.select when no fds are
104 - Raise a TypeError when trying to delete a T_STRING_INPLACE struct member.
106 - Issue #8226: sys.setfilesystemencoding() raises a LookupError if the encoding
109 - Issue #1583863: An str subclass can now override the __str__ method
111 - Issue #7072: isspace(0xa0) is true on Mac OS X
116 - Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or
117 PySequence_DelSlice when the object doesn't have any mapping operations
120 - Issue #5753: A new C API function, :cfunc:`PySys_SetArgvEx`, allows
121 embedders of the interpreter to set sys.argv without also modifying
122 sys.path. This helps fix `CVE-2008-5983
123 <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5983>`_.
128 - Issue #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the
129 current directory was deleted. Patch written by W. Trevor King.
131 - Issue #9759: GzipFile now raises ValueError when an operation is attempted
132 after the file is closed. Patch by Jeffrey Finkelstein.
134 - Issue #9042: Fix interaction of custom translation classes and caching in
137 - Issue #9065: tarfile no longer uses "root" as the default for the uname and
140 - Issue #8980: Fixed a failure in distutils.command check that was shadowed
141 by an environment that does not have docutils. Patch by Arfrever.
143 - Issue #1050268: parseaddr now correctly quotes double quote and backslash
144 characters that appear inside quoted strings in email addresses.
146 - Issue #10004: quoprimime no longer generates a traceback when confronted
147 with invalid characters after '=' in a Q-encoded word.
149 - Issue #9950: Fix socket.sendall() crash or misbehaviour when a signal is
150 received. Now sendall() properly calls signal handlers if necessary,
151 and retries sending if these returned successfully, including on sockets
154 - Issue #9936: Fixed executable lines' search in the trace module.
156 - Issue #9928: Properly initialize the types exported by the bz2 module.
158 - Issue #9854: The default read() implementation in io.RawIOBase now
159 handles non-blocking readinto() returning None correctly.
161 - Issue #9853: Fix the signature of SSLSocket.recvfrom() and
162 SSLSocket.sendto() to match the corresponding socket methods.
164 - Issue #9792: In case of connection failure, socket.create_connection()
165 would swallow the exception and raise a new one, making it impossible
166 to fetch the original errno, or to filter timeout errors. Now the
167 original error is re-raised.
169 - Issue #9826: OrderedDict.__repr__ can now handle self-referential
172 - Issue #9758: When fcntl.ioctl() was called with mutable_flag set to True,
173 and the passed buffer was exactly 1024 bytes long, the buffer wouldn't
174 be updated back after the system call. Original patch by Brian Brazil.
176 - Issue #6656: fix locale.format_string to handle escaped percents
179 - Issue #1100562: Fix deep-copying of objects derived from the list and
180 dict types. Patch by Michele Orrù and Björn Lindqvist.
182 - Issue #9753: Fixed socket.dup, which did not always work correctly
185 - Issue #1868: Eliminate subtle timing issues in thread-local objects by
186 getting rid of the cached copy of thread-local attribute dictionary.
188 - Issue #8797: urllib2 does a retry for Basic Authentication failure instead of
189 falling into recursion.
191 - Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four
192 character years even if the message contains RFC822 two character years.
194 - Issue #8750: Fixed MutableSet's methods to correctly handle
195 reflexive operations, namely x -= x and x ^= x.
197 - Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing
198 error handling when accepting a new connection.
200 - Issue #658749: asyncore's connect() method now correctly interprets winsock
203 - Issue #9214: Set operations on KeysView or ItemsView in the collections
204 module now correctly return a set. (Patch by Eli Bendersky.)
206 - Issue #9617: Signals received during a low-level write operation aren't
207 ignored by the buffered IO layer anymore.
209 - Issue #9605: posix.getlogin() decodes the username with file filesystem
210 encoding and surrogateescape error handler. Patch written by David Watson.
212 - Issue #9603: posix.ttyname() and posix.ctermid() decode the terminal name
213 using the filesystem encoding and surrogateescape error handler. Patch
214 written by David Watson.
216 - Issue #8688: MANIFEST files created by distutils now include a magic
217 comment indicating they are generated. Manually maintained MANIFESTs
218 without this marker will not be overwritten or removed.
220 - Issue #7467: when reading a file from a ZIP archive, its CRC is checked
221 and a BadZipfile error is raised if it doesn't match (as used to be the
222 case in Python 2.5 and earlier).
224 - Issue #9550: a BufferedReader could issue an additional read when the
225 original read request had been satisfied, which could block indefinitely
226 when the underlying raw IO channel was e.g. a socket. Report and original
227 patch by Jason V. Miller.
229 - Issue #6915: Under Windows, os.listdir() didn't release the Global
230 Interpreter Lock around all system calls. Original patch by Ryan Kelly.
232 - Issue #3757: thread-local objects now support cyclic garbage collection.
233 Thread-local objects involved in reference cycles will be deallocated
234 timely by the cyclic GC, even if the underlying thread is still running.
236 - Fix Issue8280 - urllib2's Request method will remove fragements in the url.
237 This is how it is supposed to work, wget and curl do the same. Previous
240 - Issue #2944: asyncore doesn't handle connection refused correctly.
242 - Issue #3196: email header decoding is now forgiving if an RFC2047
243 encoded word encoded in base64 is lacking padding.
245 - Issue #8447: Make distutils.sysconfig follow symlinks in the path to
246 the interpreter executable. This fixes a failure of test_httpservers
249 - Issue #7372: Fix pstats regression when stripping paths from profile
250 data generated with the profile module.
252 - Issue #4108: In urllib.robotparser, if there are multiple 'User-agent: *'
253 entries, consider the first one.
255 - Issue #8397: Raise an error when attempting to mix iteration and regular
256 reads on a BZ2File object, rather than returning incorrect results.
258 - Issue #7909: Do not touch paths with the special prefixes ``\\.\``
259 or ``\\?\`` in ntpath.normpath().
261 - Issue #5294: Fix the behavior of pdb's "continue" command when called
262 in the top-level debugged frame.
264 - Issue #5727: Restore the ability to use readline when calling into pdb
267 - Issue #6719: In pdb, do not stop somewhere in the encodings machinery
268 if the source file to be debugged is in a non-builtin encoding.
270 - Issue #8048: Prevent doctests from failing when sys.displayhook has
273 - Issue #8015: In pdb, do not crash when an empty line is entered as
274 a breakpoint command.
276 - Issue #5146: Handle UID THREAD command correctly in imaplib.
278 - Issue #5147: Fix the header generated for cookie files written by
279 http.cookiejar.MozillaCookieJar.
281 - Issue #8198: In pydoc, output all help text to the correct stream
282 when sys.stdout is reassigned.
284 - Issue #8230: Fix Lib/test/sortperf.py.
286 - Issue #7395: Fix tracebacks in pstats interactive browser.
288 - Issue #1713: Fix os.path.ismount(), which returned true for symbolic links
291 - Issue #8826: Properly load old-style "expires" attribute in http.cookies.
293 - Issue #1690103: Fix initial namespace for code run with trace.main().
295 - Issue #9354: Provide getsockopt() in asyncore's file_wrapper.
297 - Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when
298 re-initializing a buffered IO object by calling its ``__init__`` method.
300 - Issue #8620: when a Cmd is fed input that reaches EOF without a final
301 newline, it no longer truncates the last character of the last command line.
303 - Issue #3704: http.cookiejar was not properly handling URLs with a / in the
306 - Issue #4629: getopt raises an error if an argument ends with = whereas getopt
307 doesn't except a value (eg. --help= is rejected if getopt uses ['help='] long
310 - Issue #7895: platform.mac_ver() no longer crashes after calling os.fork()
312 - Issue #9323: Fixed a bug in trace.py that resulted in loosing the
313 name of the script being traced. Patch by Eli Bendersky.
315 - Issue #9282: Fixed --listfuncs option of trace.py. Thanks Eli
316 Bendersky for the patch.
318 - Issue #1555570: email no longer inserts extra blank lines when a \r\n
319 combo crosses an 8192 byte boundary.
321 - Issue #9243: Fix sndhdr module and add unit tests, contributed by James Lee.
323 - Issue #9137: Fix issue in MutableMapping.update, which incorrectly
324 treated keyword arguments called 'self' or 'other' specially.
326 - Issue #7646: The fnmatch pattern cache no longer grows without bound.
328 - Issue #9136: Fix 'dictionary changed size during iteration'
329 RuntimeError produced when profiling the decimal module. This was
330 due to a dangerous iteration over 'locals()' in Context.__init__.
332 - Fix extreme speed issue in Decimal.pow when the base is an exact
333 power of 10 and the exponent is tiny (for example,
334 Decimal(10) ** Decimal('1e-999999999')).
336 - Issue #9130: Fix validation of relative imports in parser module.
338 - Issue #9128: Fix validation of class decorators in parser module.
340 - Issue #5468: urlencode to handle bytes type and other encodings in its query
341 parameter. Patch by Dan Mahn.
343 - Issue #7673: Fix security vulnerability (CVE-2010-2089) in the audioop
344 module, ensure that the input string length is a multiple of the frame size
346 - Issue #6589: cleanup asyncore.socket_map in case smtpd.SMTPServer constructor
349 - Issue #9075: In the ssl module, remove the setting of a ``debug`` flag
350 on an OpenSSL structure.
352 - Issue #8682: The ssl module now temporary increments the reference count of
353 a socket object got through ``PyWeakref_GetObject``, so as to avoid possible
354 deallocation while the object is still being used.
356 - Issue #1368368: FancyURLOpener class changed to throw an Exception on wrong
357 password instead of presenting an interactive prompt. Older behavior can be
358 obtained by passing retry=True to http_error_xxx methods of FancyURLOpener.
360 - Issue #8203: Fix IDLE Credits dialog: view_file() uses its encoding argument.
362 - Issue #8720: fix regression caused by fix for #4050 by making getsourcefile
363 smart enough to find source files in the linecache.
365 - Issue #5610: feedparser no longer eats extra characters at the end of
366 a body part if the body part ends with a \r\n.
368 - Fix codecs.escape_encode to return the correct consumed size.
370 - Issue #8897: Fix sunau module, use bytes to write the header. Patch written
373 - Issue #6470: Drop UNC prefix in FixTk.
375 - Issue #4768: base64 encoded email body parts were incorrectly stored as
376 binary strings. They are now correctly converted to strings.
378 - Issue #8833: tarfile created hard link entries with a size field != 0 by
381 - Charset.body_encode now correctly handles base64 encoding by encoding
382 with the output_charset before calling base64mime.encode. Passes the
383 tests from 2.x issue #1368247.
385 - Issue #7150: Raise OverflowError if the result of adding or subtracting
386 timedelta from date or datetime falls outside of the MINYEAR:MAXYEAR range.
388 - Issue #4769: Fix main() function of the base64 module, use sys.stdin.buffer
389 and sys.stdout.buffer (instead of sys.stdin and sys.stdout) to use the bytes
392 - Issue #6662: Fix parsing of malformatted charref (&#bad;), patch written by
395 - Issue #6268: Fix seek() method of codecs.open(), don't read or write the BOM
396 twice after seek(0). Fix also reset() method of codecs, UTF-16, UTF-32 and
397 StreamWriter classes.
399 - Issue #8782: Add a trailing newline in linecache.updatecache to the last line
400 of files without one.
402 - Issue #8729: Return NotImplemented from collections.Mapping.__eq__ when
403 comparing to a non-mapping.
405 - Issue #8774: tabnanny uses the encoding cookie (#coding:...) to use the
408 - Issue #7507: Quote "!" in pipes.quote(); it is special to some shells.
410 - Issue #8663: distutils.log emulates backslashreplace error handler. Fix
411 compilation in a non-ASCII directory if stdout encoding is ASCII (eg. if
412 stdout is not a TTY).
414 - Issue #1285086: Speed up urllib.parse functions: quote, quote_from_bytes,
415 unquote, unquote_to_bytes.
417 - Issue #8688: Distutils now recalculates MANIFEST everytime.
419 - Issue #5099: subprocess.Popen.__del__ no longer references global objects
420 to prevent issues during interpreter shutdown.
422 - Issue #8681: Make the zlib module's error messages more informative when
423 the zlib itself doesn't give any detailed explanation.
425 - Issue #8674: Fixed a number of incorrect or undefined-behaviour-inducing
426 overflow checks in the audioop module.
428 - Issue #8571: Fix an internal error when compressing or decompressing a
429 chunk larger than 1GB with the zlib module's compressor and decompressor
432 - Issue #8573: asyncore _strerror() function might throw ValueError.
434 - Issue #8483: asyncore.dispatcher's __getattr__ method produced confusing
435 error messages when accessing undefined class attributes because of the cheap
436 inheritance with the underlying socket object.
438 - Issue #7472: Fixed typo in email.encoders module; messages using ISO-2022
439 character sets will now consistently use a Content-Transfer-Encoding of
440 7bit rather than sometimes being marked as 8bit.
442 - Issue #4265: shutil.copyfile() was leaking file descriptors when disk fills.
443 Patch by Tres Seaver.
445 - Issue #7755: Use an unencumbered audio file for tests.
447 - Issue #8621: uuid.uuid4() returned the same sequence of values in the
448 parent and any children created using ``os.fork`` on MacOS X 10.6.
450 - Issue #8567: Fix precedence of signals in Decimal module: when a
451 Decimal operation raises multiple signals and more than one of those
452 signals is trapped, the specification determines the order in which
453 the signals should be handled. In many cases this order wasn't
454 being followed, leading to the wrong Python exception being raised.
456 - Issue #7865: The close() method of :mod:`io` objects should not swallow
457 exceptions raised by the implicit flush(). Also ensure that calling
458 close() several times is supported. Patch by Pascal Chambon.
460 - Issue #4687: Fix accuracy of garbage collection runtimes displayed with
463 - Issue #8354: The siginterrupt setting is now preserved for all signals,
466 - Issue #8464: tarfile no longer creates files with execute permissions set
467 when mode="w|" is used.
469 - Issue #7834: Fix connect() of Bluetooth L2CAP sockets with recent versions
470 of the Linux kernel. Patch by Yaniv Aknin.
472 - Issue #6312: Fixed http HEAD request when the transfer encoding is chunked.
473 It should correctly return an empty response now.
475 - Issue #8549: Fix compiling the _ssl extension under AIX. Patch by
478 - Issue #8391: os.execvpe() and os.getenv() supports unicode with surrogates
479 and bytes strings for environment keys and values, and use
480 sys.getfilesystemencoding() instead of sys.getdefautltencoding()
482 - Issue #2302: Fix a race condition in SocketServer.BaseServer.shutdown,
483 where the method could block indefinitely if called just before the
484 event loop started running. This also fixes the occasional freezes
485 witnessed in test_httpservers.
487 - Issue #8524: When creating an SSL socket, the timeout value of the
488 original socket wasn't retained (instead, a socket with a positive timeout
489 would be turned into a non-blocking SSL socket).
491 - Issue #5103: SSL handshake would ignore the socket timeout and block
492 indefinitely if the other end didn't respond.
494 - The do_handshake() method of SSL objects now adjusts the blocking mode of
495 the SSL structure if necessary (as other methods already do).
497 - Issue #8108: Fix the unwrap() method of SSL objects when the socket has
498 a non-infinite timeout. Also make that method friendlier with applications
499 wanting to continue using the socket in clear-text mode, by disabling
500 OpenSSL's internal readahead. Thanks to Darryl Miles for guidance.
502 - Issue #8468: bz2.BZ2File() accepts str with surrogates and bytes filenames
504 - Issue #8496: make mailcap.lookup() always return a list, rather than an
505 iterator. Patch by Gregory Nofi.
507 - Issue #8195: Fix a crash in sqlite Connection.create_collation() if the
508 collation name contains a surrogate character.
510 - Issue #8484: Load all ciphers and digest algorithms when initializing
511 the _ssl extension, such that verification of some SSL certificates
512 doesn't fail because of an "unknown algorithm".
514 - Issue #4814: timeout parameter is now applied also for connections resulting
515 from PORT/EPRT commands.
517 - Issue #3817: ftplib.FTP.abort() method now considers 225 a valid response
518 code as stated in RFC-959 at chapter 5.4.
520 - Issue #8394: _ctypes.dlopen() accepts bytes, bytearray and str with
523 - Issue #7606: XML-RPC traceback stored in X-traceback is now encoded to ASCII
524 using backslashreplace error handler
526 - Issue #5277: Fix quote counting when parsing RFC 2231 encoded parameters.
528 - Issue #8383: pickle and pickletools use surrogatepass error handler when
529 encoding unicode as utf8 to support lone surrogates and stay compatible with
532 - Issue #8179: Fix macpath.realpath() on a non-existing path.
534 - Issue #8139: ossaudiodev didn't initialize its types properly, therefore
535 some methods (such as oss_mixer_device.fileno()) were not available.
536 Initial patch by Bertrand Janin.
538 - Issue #7512: shutil.copystat() could raise an OSError when the filesystem
539 didn't support chflags() (for example ZFS under FreeBSD). The error is
542 - Issue #3890, #8222: Fix recv() and recv_into() on non-blocking SSL sockets.
543 Also, enable the SSL_MODE_AUTO_RETRY flag on SSL sockets, so that blocking
544 reads and writes are always retried by OpenSSL itself.
546 - Issue #6716/2: Backslash-replace error output in compilall.
551 - Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression
552 introduced by issue #9324.
554 - Issue #8734: Avoid crash in msvcrt.get_osfhandle() when an invalid file
555 descriptor is provided. Patch by Pascal Chambon.
557 - Issue #7736: Release the GIL around calls to opendir() and closedir()
558 in the posix module. Patch by Marcin Bachry.
560 - Issue #4835: make PyLong_FromSocket_t() and PyLong_AsSocket_t() private
561 to the socket module, and fix the width of socket descriptors to be
562 correctly detected under 64-bit Windows.
564 - Issue #665761: ``functools.reduce()`` will no longer mask exceptions
565 other than ``TypeError`` raised by the iterator argument.
567 - Issue #9570: Use PEP 383 decoding in os.mknod and os.mkfifo.
569 - Issue #9324: Add parameter validation to signal.signal on Windows in order
572 - Issue #9526: Remove some outdated (int) casts that were preventing
573 the array module from working correctly with arrays of more than
576 - Fix memory leak in ssl._ssl._test_decode_cert.
578 - Issue #8065: Fix memory leak in readline module (from failure to
579 free the result of history_get_history_state()).
581 - Issue #9450: Fix memory leak in readline.replace_history_item and
582 readline.remove_history_item for readline version >= 5.0.
584 - Issue #8105: Validate file descriptor passed to mmap.mmap on Windows.
586 - Issue #9422: Fix memory leak when re-initializing a struct.Struct object.
588 - Issue #7900: The getgroups(2) system call on MacOSX behaves rather oddly
589 compared to other unix systems. In particular, os.getgroups() does
590 not reflect any changes made using os.setgroups() but basicly always
591 returns the same information as the id command.
593 os.getgroups() can now return more than 16 groups on MacOSX.
595 - Issue #7384: If the system readline library is linked against
596 ncurses, do not link the readline module against ncursesw. The
597 additional restriction of linking the readline and curses modules
598 against the same curses library is currently not enabled.
600 - Issue #8973: Add __all__ to struct module; this ensures that
601 help(struct) includes documentation for the struct.Struct class.
603 - Issue #2810: Fix cases where the Windows registry API returns
604 ERROR_MORE_DATA, requiring a re-try in order to get the complete result.
609 - Issue #10054: Some platforms provide uintptr_t in inttypes.h. Patch by
612 - Issue #10055: Make json C89-compliant in UCS4 mode.
614 - Issue #6244: Allow detect_tkinter to look for Tcl/Tk 8.6.
616 - Issue #1633863: Don't ignore $CC under AIX.
618 - Issue #9810: Compile bzip2 source files in python's project file
619 directly. It used to be built with bzip2's makefile.
621 - Issue #941346: Improve the build process under AIX and allow Python to
622 be built as a shared library. Patch by Sébastien Sablé.
624 - Issue #4026: Make the fcntl extension build under AIX. Patch by Sébastien
627 - Issue #3101: Helper functions _add_one_to_index_C() and
628 _add_one_to_index_F() become _Py_add_one_to_index_C() and
629 _Py_add_one_to_index_F(), respectively.
631 - Issue #9700: define HAVE_BROKEN_POSIX_SEMAPHORES under AIX 6.x. Patch by
634 - Issue #3928: os.mknod() now available in Solaris, also.
636 - Issue #6716: Quote -x arguments of compileall in MSI installer.
637 Exclude 2to3 tests from compileall.
639 - Issue #1628484: The Makefile doesn't ignore the CFLAGS environment
640 variable anymore. It also forwards the LDFLAGS settings to the linker
641 when building a shared library.
643 - Issue #9701: The MacOSX installer can patch the shell profile to ensure that
644 the "bin" directory inside the framework is on the shell's search path. This
645 feature now also supports the ZSH shell.
649 - Issue #9628: fix runtests.sh -x option so more than one test can be excluded.
651 - Issue #9894: Do not hardcode ENOENT in test_subprocess.
653 - Issue #9315: Added tests for the trace module. Patch by Eli Bendersky.
655 - Issue #7564: Skip test_ioctl if another process is attached to /dev/tty.
657 - Issue #8857: Provide a test case for socket.getaddrinfo.
659 - Issue #8433: Fix test_curses failure with newer versions of ncurses.
661 - Issue #9496: Provide a test suite for the rlcompleter module. Patch by
664 - Issue #9251: test_threaded_import didn't fail when run through regrtest
665 if the import lock was disabled.
667 - Issue #7449: Skip test_socketserver if threading support is disabled
669 - Issue #8672: Add a zlib test ensuring that an incomplete stream can be
670 handled by a decompressor object without errors (it returns incomplete
673 - Issue #8629: Disable some test_ssl tests, since they give different
674 results with OpenSSL 1.0.0 and higher.
676 - Issue #8533: regrtest uses backslashreplace error handler for stdout to avoid
677 UnicodeEncodeError (write non-ASCII character to stdout using ASCII encoding)
679 - Issue #8576: Remove use of find_unused_port() in test_smtplib and
680 test_multiprocessing. Patch by Paul Moore.
682 - Issue #8531: Skip test_ascii_formatd if ctypes module is missing
684 - Issue #3864: Skip three test_signal tests on freebsd6 because they fail
685 if any thread was previously started, most likely due to a platform bug.
687 - Issue #8193: Fix test_zlib failure with zlib 1.2.4.
689 - Issue #9568: Fix test_urllib2_localnet on OS X 10.3.
694 - Issue #9817: Add expat COPYING file; add expat, libffi and expat licenses
697 - Issue #9255: Document that the 'test' package is meant for interal Python use
700 - Issue #7829: Document in dis that bytecode is an implementation detail.
703 What's New in Python 3.1.2?
704 ===========================
706 *Release date: 2010-03-20*
711 - Issue #7173: Generator finalization could invalidate sys.exc_info().
716 - Issue #2698: The --compiler ignored was ignored for distutils' build_ext.
718 - Issue #4961: Inconsistent/wrong result of askyesno function in tkMessageBox
721 - Issue #7356: ctypes.util: Make parsing of ldconfig output independent of
725 What's New in Python 3.1.2 release candidate 1?
726 ===============================================
728 *Release date: 2010-03-06*
733 - Issue #7544: Preallocate thread memory before creating the thread to avoid
734 a fatal error in low memory condition.
736 - Issue #7820: The parser tokenizer restores all bytes in the right if
739 - Handle errors from looking up __prepare__ correctly.
741 - Issue #5939: Add additional runtime checking to ensure a valid capsule
742 in Modules/_ctypes/callproc.c.
744 - Issue #7309: Fix unchecked attribute access when converting
745 UnicodeEncodeError, UnicodeDecodeError, and UnicodeTranslateError to
748 - Issue #6902: Fix problem with built-in types format incorrectly with
751 - Issue #7988: Fix default alignment to be right aligned for
752 complex.__format__. Now it matches other numeric types.
754 - Issue #7385: Fix a crash in `MemoryView_FromObject` when
755 `PyObject_GetBuffer` fails. Patch by Florent Xicluna.
757 - Issue #7788: Fix an interpreter crash produced by deleting a list
758 slice with very large step value.
760 - Issue #7561: Operations on empty bytearrays (such as `int(bytearray())`)
761 could crash in many places because of the PyByteArray_AS_STRING() macro
762 returning NULL. The macro now returns a statically allocated empty
765 - Issue #7632: Fix various str -> float conversion bugs present in 2.7
766 alpha 2, including: (1) a serious 'wrong output' bug that could
767 occur for long (> 40 digit) input strings, (2) a crash in dtoa.c
768 that occurred in debug builds when parsing certain long numeric
769 strings corresponding to subnormal values, (3) a memory leak for
770 some values large enough to cause overflow, and (4) a number of
771 flaws that could lead to incorrectly rounded results.
773 - Issue #7604: Deleting an unset slotted attribute did not raise an
776 - Issue #7466: segmentation fault when the garbage collector is called
777 in the middle of populating a tuple. Patch by Florent Xicluna.
779 - Issue #7419: setlocale() could crash the interpreter on Windows when called
782 - Issue #6077: On Windows, files opened with tempfile.TemporaryFile in "wt+"
783 mode would appear truncated on the first '0x1a' byte (aka. Ctrl+Z).
785 - Issue #7085: Fix crash when importing some extensions in a thread
788 - Issue #7298: fixes for range and reversed(range(...)). Iteration
789 over range(a, b, c) incorrectly gave an empty iterator when a, b and
790 c fit in C long but the length of the range did not. Also fix
791 several cases where reversed(range(a, b, c)) gave wrong results, and
792 fix a refleak for reversed(range(a, b, c)) with large arguments.
794 - Issue #7244: itertools.izip_longest() no longer ignores exceptions
795 raised during the formation of an output tuple.
797 - Issue #3297: On wide unicode builds, do not split unicode characters into
800 - Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which
801 fixes the problem of some exceptions being thrown at shutdown when the
802 interpreter is killed. Patch by Adam Olsen.
804 - Issue #7065: Fix a crash in bytes.maketrans and bytearray.maketrans when
805 using byte values greater than 127. Patch by Derk Drukker.
807 - Issue #7019: Raise ValueError when unmarshalling bad long data, instead
808 of producing internally inconsistent Python longs.
810 - Issue #6990: Fix threading.local subclasses leaving old state around
811 after a reference cycle GC which could be recycled by new locals.
813 - Issue #6846: Fix bug where bytearray.pop() returns negative integers.
815 - Issue #6750: A text file opened with io.open() could duplicate its output
816 when writing from multiple threads at the same time.
821 - Issue #7154: urllib.request can now detect the proxy settings on OSX 10.6
822 (as long as the user didn't specify 'automatic proxy configuration').
824 - Issue #8412: os.system() now accepts bytes, bytearray and str with
827 - Issue #4282: Fix the main function of the profile module for a non-ASCII
828 script, open the file in binary mode and not in text mode with the default
831 - Issue #7774: Set sys.executable to an empty string if argv[0] has been set to
832 an non existent program name and Python is unable to retrieve the real
835 - Issue #6509: fix re.sub to work properly when the pattern, the string, and
836 the replacement were all bytes. Patch by Antoine Pitrou.
838 - Issue #1054943: Fix unicodedata.normalize('NFC', text) for the Public Review
841 - Issue #7494: fix a crash in _lsprof (cProfile) after clearing the profiler,
842 reset also the pointer to the current pointer context.
844 - Issue #7250: Fix info leak of os.environ across multi-run uses of
845 wsgiref.handlers.CGIHandler.
847 - Issue #1729305: Fix doctest to handle encode error with "backslashreplace".
849 - Issue #691291: codecs.open() should not convert end of lines on reading and
852 - Issue #7959: ctypes callback functions are now registered correctly
853 with the cycle garbage collector.
855 - Issue #6666: fix bug in trace.py that applied the list of directories
856 to be ignored only to the first file. Noted by Bogdan Opanchuk.
858 - Issue #7597: curses.use_env() can now be called before initscr().
859 Noted by Kan-Ru Chen.
861 - Issue #7310: fix the __repr__ of os.environ to show the environment variables.
863 - Issue #7970: email.Generator.flatten now correctly flattens message/rfc822
864 messages parsed by email.Parser.HeaderParser.
866 - Issue #7361: Importlib was not handling bytecode files less than 8 bytes in
869 - Issue #7835: shelve should no longer produce mysterious warnings during
870 interpreter shutdown.
872 - Issue #6233: ElementTree failed converting unicode characters to XML
873 entities when they could't be represented in the requested output
874 encoding. Patch by Jerry Chen.
876 - Issue #4772: Raise a ValueError when an unknown Bluetooth protocol is
877 specified, rather than fall through to AF_PACKET (in the `socket` module).
878 Also, raise ValueError rather than TypeError when an unknown TIPC address
879 type is specified. Patch by Brian Curtin.
881 - Issue #6939: Fix file I/O objects in the `io` module to keep the original
882 file position when calling `truncate()`. It would previously change the
883 file position to the given argument, which goes against the tradition of
884 ftruncate() and other truncation APIs. Patch by Pascal Chambon.
886 - Issue #7792: Registering non-classes to ABCs raised an obscure error.
888 - Issue #7785: Don't accept bytes in FileIO.write().
890 - Issue #7773: Fix an UnboundLocalError in platform.linux_distribution() when
891 the release file is empty.
893 - Issue #7561: Fix crashes when using bytearray objects with the posix
896 - Issue #1670765: Prevent email.generator.Generator from re-wrapping
897 headers in multipart/signed MIME parts, which fixes one of the sources of
898 invalid modifications to such parts by Generator.
900 - Issue #7701: Fix crash in binascii.b2a_uu() in debug mode when given a
901 1-byte argument. Patch by Victor Stinner.
903 - Issue #3299: Fix possible crash in the _sre module when given bad
904 argument values in debug mode. Patch by Victor Stinner.
906 - Issue #7681: Use floor division in appropiate places in the wave module.
908 - Issue #5372: Drop the reuse of .o files in Distutils' ccompiler (since
909 Extension extra options may change the output without changing the .c
910 file). Initial patch by Collin Winter.
912 - Issue #7617: Make sure distutils.unixccompiler.UnixCCompiler recognizes
913 gcc when it has a fully qualified configuration prefix. Initial patch
916 - Issue #7105: Make WeakKeyDictionary and WeakValueDictionary robust against
917 the destruction of weakref'ed objects while iterating.
919 - Issue #7455: Fix possible crash in cPickle on invalid input. Patch by
922 - Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when
923 opening an empty or very small file.
925 - Issue #7556: Make sure Distutils' msvc9compile reads and writes the
926 MSVC XML Manifest file in text mode so string patterns can be used
927 in regular expressions.
929 - Issue #7552: Removed line feed in the base64 Authorization header in
930 the Distutils upload command to avoid an error when PyPI reads it.
931 This occurs on long passwords. Initial patch by JP St. Pierre.
933 - Issue #7231: urllib2 cannot handle https with proxy requiring auth. Patch by
936 - Issue #4757: `zlib.compress` and other methods in the zlib module now
937 raise a TypeError when given an `str` object (rather than a `bytes`-like
938 object). Patch by Victor Stinner and Florent Xicluna.
940 - Issue #7349: Make methods of file objects in the io module accept None as an
941 argument where file-like objects (ie StringIO and BytesIO) accept them to mean
942 the same as passing no argument.
944 - Issue #5949: added check for correct lineends in input from IMAP server
947 - Fix variations of extending deques: d.extend(d) d.extendleft(d) d+=d
949 - Issue #6986: Fix crash in the JSON C accelerator when called with the
950 wrong parameter types. Patch by Victor Stinner.
952 - Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is
953 generated in Distutils. Patch by Stephen Emslie.
955 - Issue #4120: Drop reference to CRT from manifest when building extensions with
958 - Issue #7410: deepcopy of itertools.count was resetting the count.
960 - Issue #4486: When an exception has an explicit cause, do not print its
961 implicit context too. This affects the `traceback` module as well as
962 built-in exception printing.
964 - Issue #1488943: difflib.Differ() doesn't always add hints for tab characters
966 - Issue #7354: distutils.tests.test_msvc9compiler - dragfullwindows can
969 - Issue #3976: pprint for sets, frozensets, and dicts now succeed when
970 they contain unorderable types.
972 - Issue #5037: Proxy the __bytes__ special method instead to __bytes__ instead
975 - Issue #7341: Close the internal file object in the TarFile constructor in
978 - Issue #7293: distutils.test_msvc9compiler is fixed to work on any fresh
979 Windows box. Help provided by David Bolen.
981 - Issue #7328: pydoc no longer corrupts sys.path when run with the '-m' switch
983 - Issue #7318: multiprocessing now uses a timeout when it fails to establish
984 a connection with another process, rather than looping endlessly. The
985 default timeout is 20 seconds, which should be amply sufficient for
988 - Issue #7282: Fix a memory leak when an RLock was used in a thread other
989 than those started through `threading.Thread` (for example, using
990 `_thread.start_new_thread()`).
992 - Issue #7187: Importlib would not silence the IOError raised when trying to
993 write new bytecode when it was made read-only.
995 - Issue #7264: Fix a possible deadlock when deallocating thread-local objects
996 which are part of a reference cycle.
998 - Issue #6896: mailbox.Maildir now invalidates its internal cache each time
999 a modification is done through it. This fixes inconsistencies and test
1000 failures on systems with slightly bogus mtime behaviour.
1002 - Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
1004 - Issue #7246 & Issue #7208: getpass now properly flushes input before
1005 reading from stdin so that existing input does not confuse it and
1006 lead to incorrect entry or an IOError. It also properly flushes it
1007 afterwards to avoid the terminal echoing the input afterwards on
1008 OSes such as Solaris.
1010 - Issue #7233: Fix a number of two-argument Decimal methods to make
1011 sure that they accept an int or long as the second argument. Also
1012 fix buggy handling of large arguments (those with coefficient longer
1013 than the current precision) in shift and rotate.
1015 - Issue #7205: Fix a possible deadlock when using a BZ2File object from
1016 several threads at once.
1018 - Issue #7071: byte-compilation in Distutils is now done with respect to
1019 sys.dont_write_bytecode.
1021 - Issue #7099: Decimal.is_normal now returns True for numbers with exponent
1024 - Issue #7080: locale.strxfrm() raises a MemoryError on 64-bit non-Windows
1025 platforms, and assorted locale fixes by Derk Drukker.
1027 - Issue #5833: Fix extra space character in readline completion with the
1028 GNU readline library version 6.0.
1030 - Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment
1032 - Issue #7082: When falling back to the MIME 'name' parameter, the
1033 correct place to look for it is the Content-Type header.
1035 - Make tokenize.detect_coding() normalize utf-8 and iso-8859-1 variants like the
1038 - Issue #7048: Force Decimal.logb to round its result when that result
1039 is too large to fit in the current precision.
1041 - Issue #6236, #6348: Fix various failures in the I/O library under AIX
1042 and other platforms, when using a non-gcc compiler. Patch by Derk Drukker.
1044 - Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils.
1046 - Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...)
1047 does now always result in NULL.
1049 - Issue #5042: Structure sub-subclass does now initialize correctly
1050 with base class positional arguments.
1052 - Issue #6882: Import uuid creates zombies processes.
1054 - Issue #6635: Fix profiler printing usage message.
1056 - Issue #6888: pdb's alias command was broken when no arguments were given.
1058 - Issue #6795: int(Decimal('nan')) now raises ValueError instead of
1059 returning NaN or raising InvalidContext. Also, fix infinite recursion
1060 in long(Decimal('nan')).
1062 - Issue #6850: Fix bug in Decimal._parse_format_specifier for formats
1063 with no type specifier.
1065 - Issue #6239: ctypes.c_char_p return value must return bytes.
1067 - Issue #6838: Use a list to accumulate the value instead of
1068 repeatedly concatenating strings in http.client's
1069 HTTPResponse._read_chunked providing a significant speed increase
1070 when downloading large files servend with a Transfer-Encoding of 'chunked'.
1072 - Have importlib raise ImportError if None is found in sys.modules for a
1075 - Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN
1076 payloads are now ordered by integer value rather than lexicographically.
1078 - Issue #6163: Fixed HP-UX runtime library dir options in
1079 distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and
1080 Michael Haubenwallner.
1082 - Issue #7066: archive_util.make_archive now restores the cwd if an error is
1083 raised. Initial patch by Ezio Melotti.
1085 - Issue #7481: When a threading.Thread failed to start it would leave the
1086 instance stuck in initial state and present in threading.enumerate().
1088 - Issue #1068268: The subprocess module now handles EINTR in internal
1089 os.waitpid and os.read system calls where appropriate.
1091 - Issue #9315: Fix for the trace module to record correct class name
1092 for tracing methods.
1097 - Issue #9277: Fix bug in struct.pack for bools in standard mode
1098 (e.g., struct.pack('>?')): if conversion to bool raised an exception
1099 then that exception wasn't properly propagated on machines where
1102 - Issue #5180: Fixed a bug that prevented loading 2.x pickles in 3.x
1103 python when they contain instances of old-style classes.
1105 - Issue #7670: sqlite3: Fixed crashes when operating on closed connections.
1107 - Stop providing crtassem.h symbols when compiling with Visual Studio 2010, as
1108 msvcr100.dll is not a platform assembly anymore.
1110 - Issue #7078: Set struct.__doc__ from _struct.__doc__.
1112 - Issue #6848: Fix curses module build failure on OS X 10.6.
1114 - Expat: Fix DoS via XML document with malformed UTF-8 sequences
1117 - Issue #7999: os.setreuid() and os.setregid() would refuse to accept a -1
1118 parameter on some platforms such as OS X.
1123 - Issue #7924: Fix an intermittent 'XXX undetected error' failure in
1124 test_capi (only seen so far on platforms where the curses module
1125 wasn't built), due to an uncleared exception.
1127 - issue #7728: test_timeout was changed to use test.support.bind_port
1128 instead of a hard coded port.
1130 - Issue #7376: instead of running a self-test (which was failing) when called
1131 with no arguments, doctest.py now gives a usage message.
1133 - Issue #7498: test_multiprocessing now uses test.support.find_unused_port
1134 instead of a hardcoded port number in test_rapid_restart.
1136 - Issue #7431: use TESTFN in test_linecache instead of trying to create a
1137 file in the Lib/test directory, which might be read-only for the
1138 user running the tests.
1140 - Issue #7324: add a sanity check to regrtest argument parsing to
1141 catch the case of an option with no handler.
1143 - Issue #6551: test_zipimport could import and then destroy some modules of
1144 the encodings package, which would make other tests fail further down
1145 the road because the internally cached encoders and decoders would point
1146 to empty global variables.
1148 - Issue #7295: Do not use a hardcoded file name in test_tarfile.
1150 - Issue #7270: Add some dedicated unit tests for multi-thread synchronization
1151 primitives such as Lock, RLock, Condition, Event and Semaphore.
1153 - Issue #7248 (part 2): Use a unique temporary directory for importlib source
1154 tests instead of tempfile.tempdir. This prevents the tests from sharing state
1155 between concurrent executions on the same system.
1157 - Issue #7248: In importlib.test.source.util a try/finally block did not make
1158 sure that some referenced objects actually were created in the block before
1159 calling methods on the object.
1161 - Issue #7055: test___all__ now greedily detects all modules which have an
1162 __all__ attribute, rather than using a hardcoded and incomplete list.
1164 - Issue #7058: Added save/restore for argv and os.environ to runtest_inner
1165 in regrtest, with warnings if the called test modifies them.
1167 - Issue #7042: Fix test_signal (test_itimer_virtual) failure on OS X 10.6.
1172 - Make PyUnicode_CompareWithASCIIString return not equal if the Python string
1173 has '\0' at the end.
1175 - Issue #7414: 'C' code wasn't being skipped properly (for keyword arguments)
1176 in PyArg_ParseTupleAndKeywords.
1181 - Issue #9280: Make sharedinstall depend on sharedmods.
1183 - Issue #8854: Fix finding Visual Studio 2008 on Windows x64.
1185 - Issue #3920, #7903: Define _BSD_SOURCE on OpenBSD 4.4 through 4.9.
1187 - Issue #7632: When Py_USING_MEMORY_DEBUGGER is defined, disable the
1188 private memory allocation scheme in dtoa.c and use PyMem_Malloc and
1189 PyMem_Free instead. Also disable caching of powers of 5.
1191 - Switch to OpenSSL 0.9.8l on Windows.
1193 - Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it
1194 compiles correctly under gcc on x86-64. This fixes a reported
1195 problem with the --with-tsc build on x86-64.
1197 - Issue #6802: Fix build issues on MacOSX 10.6
1199 - Issue #6801 : symmetric_difference_update also accepts |.
1200 Thanks to Carl Chenet.
1202 - Issue #7541: when using ``python-config`` with a framework install the
1203 compiler might use the wrong library.
1205 - Issue #6491: Allow --with-dbmliborder to specify that no dbms will be built.
1207 - Issue #7589: Only build the nis module when the correct header files are
1213 - Updating `Using Python` documentation to include description of CPython's
1216 - Issue #6556: Fixed the Distutils configuration files location explanation
1219 - Update python manual page (options -B, -O0, -s, environment variables
1220 PYTHONDONTWRITEBYTECODE, PYTHONNOUSERSITE).
1222 - Issue #8909: Added the size of the bitmap used in the installer created by
1223 distutils' bdist_wininst. Patch by Anatoly Techtonik.
1226 What's New in Python 3.1.1?
1227 ===========================
1229 *Release date: 2009-08-13*
1234 - Issue #6707: dir() on an uninitialized module caused a crash.
1236 - Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
1238 - Issue #6573: set.union() stopped processing inputs if an instance of self
1239 occurred in the argument chain.
1241 - Issue #6070: On posix platforms import no longer copies the execute bit
1242 from the .py file to the .pyc file if it is set.
1244 - Issue #6428: Since Python 3.0, the __bool__ method must return a bool
1245 object, and not an int. Fix the corresponding error message, and the
1248 - Issue #6347: Include inttypes.h as well as stdint.h in pyport.h.
1249 This fixes a build failure on HP-UX: int32_t and uint32_t are
1250 defined in inttypes.h instead of stdint.h on that platform.
1252 - Issue #6373: Fixed a SystemError when encoding with the latin-1 codec and
1253 the 'surrogateescape' error handler, a string which contains unpaired
1259 - Issue #6624: yArg_ParseTuple with "s" format when parsing argument with
1260 NUL: Bogus TypeError detail string.
1262 - Issue #6405: Remove duplicate type declarations in descrobject.h.
1264 - The code flags for old __future__ features are now available again.
1269 - Issue #6106: telnetlib.Telnet.process_rawq doesn't handle default WILL/WONT
1272 - Issue #6126: Fixed pdb command-line usage.
1274 - Issue #6629: Fix a data corruption issue in the new I/O library, which could
1275 occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or
1276 "wb+" mode) after having buffered a certain amount of data for reading. This
1277 bug was not present in the pure Python implementation.
1279 - Issue #6622: Fix "local variable 'secret' referenced before
1280 assignment" bug in POP3.apop.
1282 - Issue #6637: defaultdict.copy() did not work when the default factory
1283 was left unspecified. Also, the eval/repr round-trip would fail when
1284 the default_factory was None.
1286 - Issue #2715: Remove remnants of Carbon.File from binhex module.
1288 - Issue #6595: The Decimal constructor now allows arbitrary Unicode
1289 decimal digits in input, as recommended by the standard. Previously
1290 it was restricted to accepting [0-9].
1292 - Issues #5155, #5313, #5331: multiprocessing.Process._bootstrap was
1293 unconditionally calling "os.close(sys.stdin.fileno())" resulting in file
1296 - Issue #1424152: Fix for http.client, urllib.request to support SSL while
1297 working through proxy. Original patch by Christopher Li, changes made by
1300 - importlib.abc.PyLoader did not inherit from importlib.abc.ResourceLoader like
1301 the documentation said it did even though the code in PyLoader relied on the
1302 abstract method required by ResourceLoader.
1304 - Issue #6431: Make Fraction type return NotImplemented when it doesn't
1305 know how to handle a comparison without loss of precision. Also add
1306 correct handling of infinities and nans for comparisons with float.
1308 - Issue #6415: Fixed warnings.warn segfault on bad formatted string.
1310 - Issue #6358: The exit status of a command started with os.popen() was
1311 reported differently than it did with python 2.x.
1313 - Issue #6323: The pdb debugger did not exit when running a script with a
1316 - Issue #3392: The subprocess communicate() method no longer fails in select()
1317 when file descriptors are large; communicate() now uses poll() when possible.
1319 - Issue #6369: Fix an RLE decompression bug in the binhex module.
1321 - Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
1323 - Issue #4005: Fixed a crash of pydoc when there was a zip file present in
1329 - Fix a segfault in expat.
1331 - Issue #4509: array.array objects are no longer modified after an operation
1332 failing due to the resize restriction in-place when the object has exported
1338 - Issue #4601: 'make install' did not set the appropriate permissions on
1341 - Issue #5390: Add uninstall icon independent of whether file
1342 extensions are installed.
1347 - Fix a test in importlib.test.source.test_abc_loader that was incorrectly
1348 testing when a .pyc file lacked an code object bytecode.
1351 What's New in Python 3.1?
1352 =========================
1354 *Release date: 27-June-2009*
1359 - Issue #6334: Fix bug in range length calculation for ranges with
1362 - Issue #6329: Fixed iteration for memoryview objects (it was being blocked
1363 because it wasn't recognized as a sequence).
1368 - Issue #6314: logging.basicConfig() performs extra checks on the "level"
1371 - Issue #6274: Fixed possible file descriptors leak in subprocess.py
1373 - Accessing io.StringIO.buffer now raises an AttributeError instead of
1374 io.UnsupportedOperation.
1376 - Issue #6271: mmap tried to close invalid file handle (-1) when anonymous.
1379 - Issue #1202: zipfile module would cause a struct.error when attempting to
1380 store files with a CRC32 > 2**31-1.
1385 - Issue #5590: Remove unused global variable in pyexpat extension.
1388 What's New in Python 3.1 Release Candidate 2?
1389 =============================================
1391 *Release date: 13-June-2009*
1396 - Fixed SystemError triggered by "range([], 1, -1)".
1398 - Issue #5924: On Windows, a large PYTHONPATH environment variable
1399 (more than 255 characters) would be completely ignored.
1401 - Issue #4547: When debugging a very large function, it was not always
1402 possible to update the lineno attribute of the current frame.
1404 - Issue #5330: C functions called with keyword arguments were not reported by
1405 the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
1410 - Issue #6438: Fixed distutils.cygwinccompiler.get_versions : the regular
1411 expression string pattern was trying to match against a bytes returned by
1412 Popen. Tested under win32 to build the py-postgresql project.
1414 - Issue #6258: Support AMD64 in bdist_msi.
1416 - Issue #6195: fixed doctest to no longer try to read 'source' data from
1419 - Issue #5262: Fixed bug in next rollover time computation in
1420 TimedRotatingFileHandler.
1422 - Issue #6217: The C implementation of io.TextIOWrapper didn't include the
1423 errors property. Additionally, the errors and encoding properties of StringIO
1424 are always None now.
1426 - Issue #6137: The pickle module now translates module names when loading
1427 or dumping pickles with a 2.x-compatible protocol, in order to make data
1428 sharing and migration easier. This behaviour can be disabled using the
1429 new `fix_imports` optional argument.
1431 - Removed the ipaddr module.
1433 - Issue #3613: base64.{encode,decode}string are now called
1434 base64.{encode,decode}bytes which reflects what type they accept and return.
1435 The old names are still there as deprecated aliases.
1437 - Issue #5767: Remove sgmlop support from xmlrpc.client.
1439 - Issue #6150: Fix test_unicode on wide-unicode builds.
1441 - Issue #6149: Fix initialization of WeakValueDictionary objects from non-empty
1447 - Issue #6221: Delete test registry key before running the test.
1449 - Issue #6158: Package Sine-1000Hz-300ms.aif in MSI file.
1454 - Issue #5735: Python compiled with --with-pydebug should throw an
1455 ImportError when trying to import modules compiled without
1456 --with-pydebug, and vice-versa.
1462 - Issue #6154: Make sure the intl library is added to LIBS if needed. Also
1463 added LIBS to OS X framework builds.
1465 - Issue #5809: Specifying both --enable-framework and --enable-shared is
1466 an error. Configure now explicity tells you about this.
1470 What's New in Python 3.1 release candidate 1?
1471 =============================================
1473 *Release date: 2009-05-30*
1478 - Issue #6097: Escape UTF-8 surrogates resulting from mbstocs conversion
1479 of the command line.
1481 - Issue #6012: Add cleanup support to O& argument parsing.
1483 - Issue #6089: Fixed str.format with certain invalid field specifiers
1484 that would raise SystemError.
1486 - Issue #5982: staticmethod and classmethod now expose the wrapped
1487 function with __func__.
1489 - Added support for multiple context managers in the same with-statement.
1490 Deprecated contextlib.nested() which is no longer needed.
1492 - Issue #5829: complex("1e500") no longer raises OverflowError. This
1493 makes it consistent with float("1e500") and interpretation of real
1494 and imaginary literals.
1496 - Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
1498 - Issue #5994: the marshal module now has docstrings.
1500 - Issue #5981: Fix three minor inf/nan issues in float.fromhex:
1501 (1) inf and nan strings with trailing whitespace were incorrectly
1502 rejected; (2) parsing of strings representing infinities and nans
1503 was locale aware; and (3) the interpretation of fromhex('-nan')
1504 didn't match that of float('-nan').
1509 - Issue #4859: Implement PEP 383 for pwd, spwd, and grp.
1511 - smtplib 'login' and 'cram-md5' login are also fixed (see Issue #5259).
1513 - Issue #6121: pydoc now ignores leading and trailing spaces in the
1514 argument to the 'help' function.
1516 - Issue #6118: urllib.parse.quote_plus ignored the encoding and errors
1517 arguments for strings with a space in them.
1519 - collections.namedtuple() was not working with the following field
1520 names: cls, self, tuple, itemgetter, and property.
1522 - In unittest, using a skipping decorator on a class is now equivalent to
1523 skipping every test on the class. The ClassTestSuite class has been removed.
1525 - Issue #6050: Don't fail extracting a directory from a zipfile if
1526 the directory already exists.
1528 - Issue #1309352: fcntl now converts its third arguments to a C `long` rather
1529 than an int, which makes some operations possible under 64-bit Linux (e.g.
1530 DN_MULTISHOT with F_NOTIFY).
1532 - Issue #5761: Add the name of the underlying file to the repr() of various
1535 - Issue #5259: smtplib plain auth login no longer gives a traceback. Fix
1536 by Musashi Tamura, tests by Marcin Bachry.
1538 - Issue #1983: Fix functions taking or returning a process identifier to use
1539 the dedicated C type ``pid_t`` instead of a C ``int``. Some platforms have
1540 a process identifier type wider than the standard C integer type.
1542 - Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket.
1543 Patch by Farhan Ahmad, test by Marcin Bachry.
1545 - Issue #2116: Weak references and weak dictionaries now support copy()ing and
1548 - Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
1550 - Issue #5918: Fix a crash in the parser module.
1552 - Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
1554 - Issue #5006: Better handling of unicode byte-order marks (BOM) in the io
1555 library. This means, for example, that opening an UTF-16 text file in
1556 append mode doesn't add a BOM at the end of the file if the file isn't
1559 - Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source'
1560 file is a binary. Patch by Brodie Rao, tests by Daniel Diniz. This fix
1561 corrects a pydoc regression.
1563 - Issue #5955: aifc's close method did not close the file it wrapped,
1564 now it does. This also means getfp method now returns the real fp.
1569 - Issue #6047: fullinstall has been removed because Python 3's executable will
1570 now be known as python3.
1572 - Lib/smtpd.py is no longer installed as a script.
1577 - Issue #3061: Use wcsftime for time.strftime where available.
1579 - Issue #4873: Fix resource leaks in error cases of pwd and grp.
1581 - Issue #6093: Fix off-by-one error in locale.strxfrm.
1583 - The _functools and _locale modules are now built into the libpython shared
1584 library instead of as extension modules.
1589 - Issue #3585: Add pkg-config support. It creates a python-2.7.pc file
1590 and a python3.pc symlink in the $(LIBDIR)/pkgconfig directory. Patch by
1596 - Issue #5442: Tests for importlib were not properly skipping case-sensitivity
1597 tests on darwin even when the OS was installed on a case-sensitive
1598 filesystem. Also fixed tests that should not be run when
1599 sys.dont_write_bytecode is true.
1602 What's New in Python 3.1 beta 1?
1603 ================================
1605 *Release date: 2009-05-06*
1610 - Issue #5914: Add new C API function PyOS_string_to_double, and
1611 deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
1613 - Issue #3382: float.__format__, complex.__format__, and %-formatting
1614 no longer map 'F' to 'f'. Because of issue #5859 (below), this only
1615 affects nan -> NAN and inf -> INF.
1617 - Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames
1618 in all operations, including splitdrive, split, etc. splitunc() now issues
1619 a PendingDeprecation warning.
1621 - Issue #5920: For float.__format__, change the behavior with the
1622 empty presentation type (that is, not one of 'e', 'f', 'g', or 'n')
1623 to be like 'g' but with at least one decimal point and with a
1624 default precision of 12. Previously, the behavior the same but with
1625 a default precision of 6. This more closely matches str(), and
1626 reduces surprises when adding alignment flags to the empty
1627 presentation type. This also affects the new complex.__format__ in
1630 - Implement PEP 383, Non-decodable Bytes in System Character Interfaces.
1632 - Issue #5890: in subclasses of 'property' the __doc__ attribute was
1633 shadowed by classtype's, even if it was None. property now
1634 inserts the __doc__ into the subclass instance __dict__.
1636 - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal
1637 sequences. Patch by Nick Barnes and Victor Stinner.
1639 - Issue #3672: Reject surrogates in utf-8 codec; add surrogatepass error handler.
1641 - Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have
1642 received a new method, detach(). detach() disconnects the underlying stream
1643 from the buffer or text IO and returns it.
1645 - Issue #5859: Remove switch from '%f' to '%g'-style formatting for
1646 floats with absolute value over 1e50. Also remove length
1647 restrictions for float formatting: '%.67f' % 12.34 and '%.120e' %
1648 12.34 no longer raise an exception.
1650 - Issue #1588: Add complex.__format__. For example,
1651 format(complex(1, 2./3), '.5') now produces a sensible result.
1653 - Issue #5864: Fix empty format code formatting for floats so that it
1654 never gives more than the requested number of significant digits.
1656 - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes
1657 new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
1659 - Issue #5835: Deprecate PyOS_ascii_formatd.
1661 - Issue #4971: Fix titlecase for characters that are their own
1662 titlecase, but not their own uppercase.
1664 - Issue #5283: Setting __class__ in __del__ caused a segfault.
1666 - Issue #5816: complex(repr(z)) now recovers z exactly, even when
1667 z involves nans, infs or negative zeros.
1669 - Issue #3166: Make int -> float conversions correctly rounded.
1671 - Issue #1869 (and many duplicates): make round(x, n) correctly
1672 rounded for a float x, by using the decimal <-> binary conversions
1673 from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now
1674 consistently agrees with format(x, '.2f').
1676 - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on
1679 - Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'.
1681 - Issue #5515: str.format() type 'n' combined with commas and leading
1682 zeros no longer gives odd results with ints and floats.
1684 - Implement PEP 378, Format Specifier for Thousands Separator, for
1687 - The str function switches to exponential notation at
1688 1e11, not 1e12. This avoids printing 13 significant digits in
1689 situations where only 12 of them are correct. Example problem
1690 value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a
1693 - Issue #1580: On most platforms, use a 'short' float repr: for a
1694 finite float x, repr(x) now outputs a string based on the shortest
1695 sequence of decimal digits that rounds to x. Previous behaviour was
1696 to output 17 significant digits and then strip trailing zeros.
1697 Another minor difference is that the new repr switches to
1698 exponential notation at 1e16 instead of the previous 1e17; this
1699 avoids misleading output in some cases.
1701 There's a new sys attribute sys.float_repr_style, which takes
1702 the value 'short' to indicate that we're using short float repr,
1703 and 'legacy' if the short float repr isn't available for one
1706 The float repr change involves incorporating David Gay's 'perfect
1707 rounding' code into the Python core (it's in Python/dtoa.c). As a
1708 secondary consequence, all string-to-float and float-to-string
1709 conversions (including all float formatting operations) will be
1710 correctly rounded on these platforms.
1712 See issue #1580 discussions for details of platforms for which
1713 this change does not apply.
1715 - Issue #5759: float() didn't call __float__ on str subclasses.
1717 - The string.maketrans() function is deprecated; there is a new static method
1718 maketrans() on the bytes and bytearray classes. This removes confusion about
1719 the types string.maketrans() is supposed to work with, and mirrors the
1720 methods available on the str class.
1722 - Issue #2170: refactored xml.dom.minidom.normalize, increasing both
1723 its clarity and its speed.
1725 - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)'
1726 to avoid compiler warnings.
1728 - Issue #3739: The unicode-internal encoder now reports the number of characters
1729 consumed like any other encoder (instead of the number of bytes).
1734 - Issue #5756: Install idle and pydoc with a 3 suffix.
1739 - Issue #5311: bdist_msi can now build packages that do not depend on a
1740 specific Python version.
1742 - Issue #5150: IDLE's format menu now has an option to strip trailing
1745 - Issue #5940: distutils.command.build_clib.check_library_list was not doing
1746 the right type checkings anymore.
1748 - Issue #4875: On win32, ctypes.util.find_library does no longer
1751 - Issue #5142: Add the ability to skip modules while stepping to pdb.
1753 - Issue #1309567: Fix linecache behavior of stripping subdirectories when
1754 looking for files given by a relative filename.
1756 - Issue #5923: Update the ``turtle`` module to version 1.1, add two new
1757 turtle demos in Demo/turtle.
1759 - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when
1760 extracting a file to the root directory.
1762 - Issue #5913: os.listdir() should fail for empty path on windows.
1764 - Issue #5084: unpickling now interns the attribute names of pickled objects,
1765 saving memory and avoiding growth in size of subsequent pickles. Proposal
1766 and original patch by Jake McGuire.
1768 - The json module now works exclusively with str and not bytes.
1770 - Issue #3959: The ipaddr module has been added to the standard library.
1771 Contributed by Google.
1773 - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an
1774 error when a named pipe is encountered, rather than blocking infinitely.
1776 - Issue #5857: tokenize.tokenize() now returns named tuples.
1778 - Issue #4305: ctypes should now build again on mipsel-linux-gnu
1780 - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the
1781 string is already in normalized form, by performing a quick check beforehand.
1782 Original patch by Rauli Ruohonen.
1784 - Issue #5853: calling a function of the mimetypes module from several threads
1785 at once could hit the recursion limit if the mimetypes database hadn't been
1788 - Issue #5854: Updated __all__ to include some missing names and remove some
1789 names which should not be exported.
1791 - Issue #3102: All global symbols that the _ctypes extension defines
1792 are now prefixed with 'Py' or '_ctypes'.
1794 - Issue #5041: ctypes does now allow pickling wide character.
1796 - Issue #5812: For the two-argument form of the Fraction constructor,
1797 Fraction(m, n), m and n are permitted to be arbitrary Rational
1800 - Issue #5812: Fraction('1e6') is valid: more generally, any string
1801 that's valid for float() is now valid for Fraction(), with the
1802 exception of strings representing NaNs and infinities.
1804 - Issue #5734: BufferedRWPair was poorly tested and had several glaring
1805 bugs. Patch by Brian Quinlan.
1807 - Issue #1161031: fix readwrite select flag handling: POLLPRI now
1808 results in a handle_expt_event call, not handle_read_event, and POLLERR
1809 and POLLNVAL now call handle_close, not handle_expt_event. Also,
1810 dispatcher now has an 'ignore_log_types' attribute for suppressing
1811 log messages, which is set to 'warning' by default.
1813 - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for
1814 new arguments introduced in 2.5.
1816 - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in
1817 makeunicodedata.py and regenerated the Unicode database (This fixes
1818 u'\u1d79'.lower() == '\x00').
1823 - Issue #5881: Remove old undocumented compatibility interfaces in hashlib and
1826 - Issue #5463: In struct module, remove deprecated float coercion
1827 for integer type codes: struct.pack('L', 0.3) should now raise
1828 an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed.
1829 The version number has been bumped to 0.3.
1831 - Issue #5359: Readd the Berkeley DB detection code to allow _dbm be built
1837 - Issue #5354: New test support function import_fresh_module() makes
1838 it easy to import both normal and optimised versions of modules.
1839 test_heapq and test_warnings have been adjusted to use it, tests for
1840 other modules with both C and Python implementations in the stdlib
1841 can be adjusted to use it over time.
1843 - Issue #5837: Certain sequences of calls to set() and unset() for
1844 support.EnvironmentVarGuard objects restored the environment variables
1845 incorrectly on __exit__.
1850 - Issue #5630: A replacement PyCObject API, PyCapsule, has been added.
1853 What's New in Python 3.1 alpha 2?
1854 =================================
1856 *Release date: 2009-4-4*
1861 - Implement PEP 378, Format Specifier for Thousands Separator, for
1864 - Issue #5666: Py_BuildValue's 'c' code should create byte strings.
1866 - Issue #5499: The 'c' code for argument parsing functions now only accepts a
1867 byte, and the 'C' code only accepts a unicode character.
1869 - Fix a problem in PyErr_NormalizeException that leads to "undetected errors"
1870 when hitting the recursion limit under certain circumstances.
1872 - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
1874 - Fix a segfault when running test_exceptions with coverage, caused by
1875 insufficient checks in accessors of Exception.__context__.
1877 - Issue #5604: non-ASCII characters in module name passed to
1878 imp.find_module() were converted to UTF-8 while the path is
1879 converted to the default filesystem encoding, causing nonsense.
1881 - Issue #5126: str.isprintable() returned False for space characters.
1883 - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to
1884 the end sys.path, for compatibility with the system install of Python.
1886 - Issue #4688: Add a heuristic so that tuples and dicts containing only
1887 untrackable objects are not tracked by the garbage collector. This can
1888 reduce the size of collections and therefore the garbage collection overhead
1889 on long-running programs, depending on their particular use of datatypes.
1891 - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
1892 improve its performance. Long divisions and remainder operations
1893 are now between 50% and 150% faster.
1895 - Issue #4258: Make it possible to use base 2**30 instead of base
1896 2**15 for the internal representation of integers, for performance
1897 reasons. Base 2**30 is enabled by default on 64-bit machines. Add
1898 --enable-big-digits option to configure, which overrides the
1899 default. Add sys.int_info structseq to provide information about
1900 the internal format.
1902 - Issue #4474: PyUnicode_FromWideChar now converts characters outside
1903 the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4
1904 and sizeof(Py_UNICODE) == 2.
1906 - Issue #5237: Allow auto-numbered fields in str.format(). For
1907 example: '{} {}'.format(1, 2) == '1 2'.
1909 - Issue #5392: when a very low recursion limit was set, the interpreter would
1910 abort with a fatal error after the recursion limit was hit twice.
1912 - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with
1918 - Issue #2625: added missing items() call to the for loop in
1919 mailbox.MH.get_message().
1921 - Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat
1922 error substitutions from non-strict codec error callbacks in
1923 incrementalencoder and StreamWriter.
1925 - Issue #5656: Fix the coverage reporting when running the test suite with
1928 - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
1930 - Issue #5624: Fix the _winreg module name still used in several modules.
1932 - Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer.
1934 - Issue #5619: Multiprocessing children disobey the debug flag and causes
1935 popups on windows buildbots. Patch applied to work around this issue.
1937 - Issue #5400: Added patch for multiprocessing on netbsd compilation/support
1939 - Issue #5387: Fixed mmap.move crash by integer overflow.
1941 - Issue #5261: Patch multiprocessing's semaphore.c to support context
1942 manager use: "with multiprocessing.Lock()" works now.
1944 - Issue #5236: Change time.strptime() to only take strings. Didn't work with
1945 bytes already but the failure was non-obvious.
1947 - Issue #5177: Multiprocessing's SocketListener class now uses
1948 socket.SO_REUSEADDR on all connections so that the user no longer needs
1949 to wait 120 seconds for the socket to expire.
1951 - Issue #5595: Fix UnboundedLocalError in ntpath.ismount().
1953 - Issue #1174606: Calling read() without arguments of an unbounded file
1954 (typically /dev/zero under Unix) could crash the interpreter.
1956 - The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and
1957 io.BufferedRandom have been deprecated for removal in Python 3.2.
1959 - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop
1960 forever on incomplete input. That caused tarfile.open() to hang when used
1961 with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or
1962 partial bzip2 compressed data.
1964 - Issue #2110: Add support for thousands separator and 'n' type
1965 specifier to Decimal.__format__
1967 - Fix Decimal.__format__ bug that swapped the meanings of the '<' and
1968 '>' alignment characters.
1970 - The error detection code in FileIO.close() could fail to reflect the `errno`
1971 value, and report it as -1 instead.
1973 - Issue #5016: FileIO.seekable() could return False if the file position
1974 was negative when truncated to a C int. Patch by Victor Stinner.
1979 - Issue #5391: mmap now deals exclusively with bytes.
1981 - Issue #5463: In struct module, remove deprecated overflow wrapping
1982 when packing an integer: struct.pack('=L', -1) now raises
1983 struct.error instead of returning b'\xff\xff\xff\xff'. The
1984 _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants
1985 have been removed from the struct module.
1988 What's New in Python 3.1 alpha 1
1989 ================================
1991 *Release date: 2009-03-07*
1996 - The io module has been reimplemented in C for speed.
1998 - Give dict views an informative __repr__.
2000 - Issue #5247: Improve error message when unknown format codes are
2001 used when using str.format() with str, int, and float arguments.
2003 - Issue #5249: time.strftime returned malformed string when format string
2004 contained non ascii character on windows.
2006 - Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the
2007 source has already been decoded into str.
2009 - Issue #5186: Reduce hash collisions for objects with no __hash__ method by
2010 rotating the object pointer by 4 bits to the right.
2012 - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs:
2013 it now forces its argument to double before testing for infinity.
2015 - Issue #5137: Make len() correctly raise a TypeError when a __len__ method
2016 returns a non-number type.
2018 - Issue #5182: Removed memoryview.__str__.
2020 - Issue #1717: Removed builtin cmp() function, dropped tp_compare
2021 slot, the C API functions PyObject_Compare and PyUnicode_Compare and
2022 the type definition cmpfunc. The tp_compare slot has been renamed
2023 to tp_reserved, and is reserved for future usage.
2025 - Issue #1242657: the __len__() and __length_hint__() calls in several tools
2026 were suppressing all exceptions. These include list() and bytearray().
2028 - Issue #4707: round(x, n) now returns an integer if x is an integer.
2029 Previously it returned a float.
2031 - Issue #4753: By enabling a configure option named '--with-computed-gotos'
2032 on compilers that support it (notably: gcc, SunPro, icc), the bytecode
2033 evaluation loop is compiled with a new dispatch mechanism which gives
2034 speedups of up to 20%, depending on the system, on various benchmarks.
2036 - Issue #4874: Most builtin decoders now reject unicode input.
2038 - Issue #4842: Don't allow trailing 'L' when constructing an integer
2041 - Issue #4991: os.fdopen now raises an OSError for invalid file descriptors.
2043 - Issue #4838: When a module is deallocated, free the memory backing the
2044 optional module state data.
2046 - Issue #4910: Rename nb_long slot to nb_reserved, and change its
2049 - Issue #4935: The overflow checking code in the expandtabs() method common
2050 to str, bytes and bytearray could be optimized away by the compiler, letting
2051 the interpreter segfault instead of raising an error.
2053 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
2056 - Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API
2057 function no longer attempt to call the __long__ slot to convert an object
2058 to an integer. Only the __int__ and __trunc__ slots are examined.
2060 - Issue #4893: Use NT threading on CE.
2062 - Issue #4915: Port sysmodule to Windows CE.
2064 - Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The
2065 common cases are optimized thanks to a dedicated fast path and a moderate
2066 amount of loop unrolling.
2068 - Issue #4074: Change the criteria for doing a full garbage collection (i.e.
2069 collecting the oldest generation) so that allocating lots of objects without
2070 destroying them does not show quadratic performance. Based on a proposal by
2072 http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
2074 - Issue #4604: Some objects of the I/O library could still be used after
2075 having been closed (for instance, a read() call could return some
2076 previously buffered data). Patch by Dmitry Vasiliev.
2078 - Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line
2079 flag to work properly. Furthermore, when specifying -u, the text stdout
2080 and stderr streams have line-by-line buffering enabled (the default being
2081 to buffer arbitrary chunks of data).
2083 - The internal table, _PyLong_DigitValue, is now an array of unsigned chars
2084 instead of ints (reducing its size from 4 to 8 times thereby reducing
2085 Python's overall memory).
2087 - Issue #1180193: When importing a module from a .pyc (or .pyo) file with
2088 an existing .py counterpart, override the co_filename attributes of all
2089 code objects if the original filename is obsolete (which can happen if the
2090 file has been renamed, moved, or if it is accessed through different paths).
2091 Patch by Ziga Seilnacht and Jean-Paul Calderone.
2093 - Issue #4580: Fix slicing of memoryviews when the item size is greater than
2094 one byte. Also fixes the meaning of len() so that it returns the number of
2095 items, rather than the size in bytes.
2097 - Issue #4075: Use OutputDebugStringW in Py_FatalError.
2099 - Issue #4747: When the terminal does not use utf-8, executing a script with
2100 non-ascii characters in its name could fail with a "SyntaxError: None" error.
2102 - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open
2103 file with `bytes' filename on Windows.
2105 - Issue #3680: Reference cycles created through a dict, set or deque iterator
2106 did not get collected.
2108 - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types
2109 where the tp_hash and tp_dict slots are both NULL.
2111 - Issue #4759: None is now allowed as the first argument of
2112 bytearray.translate(). It was always allowed for bytes.translate().
2114 - Added test case to ensure attempts to read from a file opened for writing
2117 - Issue #3106: Speedup some comparisons (str/str and int/int).
2119 - Issue #2183: Simplify and optimize bytecode for list, dict and set
2120 comprehensions. Original patch for list comprehensions by Neal Norwitz.
2122 - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always
2123 print elapsed times, not only when some objects are uncollectable /
2124 unreachable. Original patch by Neil Schemenauer.
2126 - Issue #3439: Add a bit_length method to int.
2128 - Issue #2173: When getting device encoding, check that return value of
2129 nl_langinfo is not the empty string. This was causing silent build
2132 - Issue #4597: Fixed several opcodes that weren't always propagating
2135 - Issue #4589: Fixed exception handling when the __exit__ function of a
2136 context manager returns a value that cannot be converted to a bool.
2138 - Issue #4445: Replace "sizeof(PyBytesObject)" with
2139 "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for
2140 bytes instances. On a typical machine this saves 3 bytes of memory
2141 (on average) per allocation of a bytes instance.
2143 - Issue #4533: File read operation was dreadfully slow due to a slowly
2144 growing read buffer. Fixed by using the same growth rate algorithm as
2147 - Issue #4509: Various issues surrounding resize of bytearray objects to
2148 which there are buffer exports (e.g. memoryview instances).
2150 - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()``
2151 method on file objects with closefd=False. The file descriptor is still
2152 kept open but the file object behaves like a closed file. The ``FileIO``
2153 object also got a new readonly attribute ``closefd``.
2155 - Issue #4569: Interpreter crash when mutating a memoryview with an item size
2158 - Issue #4748: Lambda generators no longer return a value.
2160 - The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
2162 - Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call
2163 PyUnicode_DecodeUTF8() once, remember the result and output it in a second
2164 step. This avoids problems with counting UTF-8 bytes that ignores the effect
2165 of using the replace error handler in PyUnicode_DecodeUTF8().
2170 - Issue #6545: Removed assert statements in distutils.Extension, so the
2171 behavior is similar when used with -O.
2173 - Issue #6459: distutils.command.build_ext.get_export_symbols now uses the
2174 "PyInit" prefix, rather than "init".
2176 - Issue #6433: fixed issues with multiprocessing.pool.map hanging on empty list
2178 - Issue #6455: Fixed test_build_ext under win32.
2180 - Issue #6413: Fixed the log level in distutils.dist for announce.
2182 - Issue #6403: Fixed package path usage in build_ext.
2184 - Issue #6365: Distutils build_ext inplace mode was copying the compiled
2185 extension in a subdirectory if the extension name had dots.
2187 - Issue #6287: Added the license field in Distutils documentation.
2189 - Issue #6263: Fixed syntax error in distutils.cygwincompiler.
2191 - Issue #5201: distutils.sysconfig.parse_makefile() now understands `$$`
2192 in Makefiles. This prevents compile errors when using syntax like:
2193 `LDFLAGS='-rpath=\$$LIB:/some/other/path'`. Patch by Floris Bruynooghe.
2195 - Issue #6131: test_modulefinder leaked when run after test_distutils.
2196 Patch by Hirokazu Yamamoto.
2198 - Issue #6048: Now Distutils uses the tarfile module in archive_util.
2200 - Issue #6062: In distutils, fixed the package option of build_ext. Feedback
2201 and tests on pywin32 by Tim Golden.
2203 - Issue #6053: Fixed distutils tests on win32. patch by Hirokazu Yamamoto.
2205 - Issue #6046: Fixed the library extension when distutils build_ext is used
2206 inplace. Initial patch by Roumen Petrov.
2208 - Issue #6041: Now distutils `sdist` and `register` commands use `check` as a
2211 - Issue #6022: a test file was created in the current working directory by
2212 test_get_outputs in Distutils.
2214 - Issue #5977: distutils build_ext.get_outputs was not taking into account the
2215 inplace option. Initial patch by kxroberto.
2217 - Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken
2218 for old-style extensions.
2220 - Issue #5976: Fixed Distutils test_check_environ.
2222 - Issue #5941: Distutils build_clib command was not working anymore because
2223 of an incomplete costumization of the archiver command. Added ARFLAGS in the
2224 Makefile besides AR and make Distutils use it. Original patch by David
2227 - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
2229 - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive
2232 - Issue #5810: Fixed Distutils test_build_scripts so it uses
2233 sysconfig.get_config_vars.
2235 - Issue #4951: Fixed failure in test_httpservers.
2237 - Issue #5795: Fixed test_distutils failure on Debian ppc.
2239 - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries.
2241 - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting
2242 a value in SafeConfigParser.
2244 - Issue #5732: added a new command in Distutils: check.
2246 - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows
2247 platforms. Initial patch by Paul Moore.
2249 - Issue #5095: Added bdist_msi to the list of bdist supported formats.
2250 Initial fix by Steven Bethard.
2252 - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
2253 Initial fix by Wayne Davison.
2255 - Issue #5694: removed spurious test output in Distutils (test_clean).
2257 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
2259 - Issue #1665206 (partially): Move imports in cgitb to the top of the module
2260 instead of performing them in functions. Helps prevent import deadlocking in
2263 - Issue #2522: locale.format now checks its first argument to ensure it has
2264 been passed only one pattern, avoiding mysterious errors where it appeared
2265 that it was failing to do localization.
2267 - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg
2270 - Issue #1222: locale.format() bug when the thousands separator is a space
2273 - Issue #5472: Fixed distutils.test_util tear down. Original patch by
2276 - collections.deque() objects now have a read-only attribute called maxlen.
2278 - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after
2279 it is has been populated and properly configured in order to prevent
2282 - Issue #4792: Prevent a segfault in _tkinter by using the
2283 guaranteed to be safe interp argument given to the PythonCmd in place of
2284 the Tcl interpreter taken from a PythonCmd_ClientData.
2286 - Issue #5193: Guarantee that tkinter.Text.search returns a string.
2288 - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler.
2289 Original patch by Akira Kitada.
2291 - Issue #5334: array.fromfile() failed to insert values when EOFError was raised.
2293 - Issue #5385: Fixed mmap crash after resize failure on windows.
2295 - Issue #5179: Fixed subprocess handle leak on failure on windows.
2297 - PEP 372: Added collections.OrderedDict().
2299 - The _asdict() for method for namedtuples now returns an OrderedDict().
2301 - configparser now defaults to using an ordered dictionary.
2303 - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes
2304 import guess_extension`` was used.
2306 - Issue #1733986: Fixed mmap crash in accessing elements of second map object
2307 with same tagname but larger size than first map. (Windows)
2309 - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer
2312 - Issue #1533164: Installed but not listed *.pyo was breaking Distutils
2315 - Issue #5378: added --quiet option to Distutils bdist_rpm command.
2317 - Issue #5052: make Distutils compatible with 2.3 again.
2319 - Issue #5316: Fixed buildbot failures introduced by multiple inheritance
2322 - Issue #5287: Add exception handling around findCaller() call to help out
2325 - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0,
2326 The file was resized to wrong size.
2328 - Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
2330 - Issue #2279: distutils.sdist.add_defaults now add files
2331 from the package_data and the data_files metadata.
2333 - Issue #5257: refactored all tests in distutils, so they use
2334 support.TempdirManager, to avoid writing in the tests directory.
2336 - Issue #4524: distutils build_script command failed with --with-suffix=3.
2337 Initial patch by Amaury Forgeot d'Arc.
2339 - Issue #2461: added tests for distutils.util
2341 - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
2342 which inherited from numbers.py which did not have __slots__ defined. The
2343 numbers hierarchy now has its own __slots__ declarations.
2345 - Issue #4631: Fix urlopen() result when an HTTP response uses chunked
2348 - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a
2349 function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
2351 - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored
2352 under NT and OS2. Patch by Philip Jenvey.
2354 - Issue #5128: Make compileall properly inspect bytecode to determine if needs
2355 to be recreated. This avoids a timing hole thanks to the old reliance on the
2356 ctime of the files involved.
2358 - Issue #5122: Synchronize tk load failure check to prevent a potential
2361 - Issue #1818: collections.namedtuple() now supports a keyword argument
2362 'rename' which lets invalid fieldnames be automatically converted to
2363 positional names in the form, _1, _2, ...
2365 - Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
2367 - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a
2368 public documented method ``ZipImporter.get_filename()``.
2370 - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support
2371 the execution of packages by looking for and executing a ``__main__``
2372 submodule when a package name is supplied. Initial patch by Andi
2375 - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will
2376 not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in
2377 Tkapp_Call when calling from a thread different than the one that created
2378 the Tcl interpreter. Patch by Robert Hancock.
2380 - Issue #4285: Change sys.version_info to be a named tuple. Patch by
2383 - Issue #1520877: Now distutils.sysconfig reads $AR from the
2384 environment/Makefile. Patch by Douglas Greiman.
2386 - Issue #1276768: The verbose option was not used in the code of
2387 distutils.file_util and distutils.dir_util.
2389 - Issue #5132: Fixed trouble building extensions under Solaris with
2390 --enabled-shared activated. Initial patch by Dave Peterson.
2392 - Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
2394 - The shelve module now defaults to pickle protocol 3.
2396 - Fix a bug in the trace module where a bytes object from co_lnotab had its
2397 items being passed through ord().
2399 - Issue #2047: shutil.move() could believe that its destination path was
2400 inside its source path if it began with the same letters (e.g. "src" vs.
2403 - Added the ttk module. See issue #2983: Ttk support for Tkinter.
2405 - Removed isSequenceType(), isMappingType, and isNumberType() from the
2406 operator module; use the abstract base classes instead. Also removed
2407 the repeat() function; use mul() instead.
2409 - Issue #5021: doctest.testfile() did not create __name__ and
2410 collections.namedtuple() relied on __name__ being defined.
2412 - Backport importlib from Python 3.1. Only the import_module() function has
2413 been backported to help facilitate transitions from 2.7 to 3.1.
2415 - Issue #1885: distutils. When running sdist with --formats=tar,gztar
2416 the tar file was overriden by the gztar one.
2418 - Issue #4863: distutils.mwerkscompiler has been removed.
2420 - Added a new itertools functions: combinations_with_replacement()
2423 - Issue #5032: added a step argument to itertools.count() and
2424 allowed non-integer arguments.
2426 - Fix and properly document the multiprocessing module's logging
2427 support, expose the internal levels and provide proper usage
2430 - Issue #1672332: fix unpickling of subnormal floats, which was
2431 producing a ValueError on some platforms.
2433 - Issue #3881: Help Tcl to load even when started through the
2434 unreadable local symlink to "Program Files" on Vista.
2436 - Issue #4710: Extract directories properly in the zipfile module;
2437 allow adding directories to a zipfile.
2439 - Issue #3807: _multiprocessing build fails when configure is passed
2440 --without-threads argument. When this occurs, _multiprocessing will
2441 be disabled, and not compiled.
2443 - Issue #5008: When a file is opened in append mode with the new IO library,
2444 do an explicit seek to the end of file (so that e.g. tell() returns the
2445 file size rather than 0). This is consistent with the behaviour of the
2446 traditional 2.x file object.
2448 - Issue #5013: Fixed a bug in FileHandler which occurred when the delay
2451 - Issue #4842: Always append a trailing 'L' when pickling longs using
2452 pickle protocol 0. When reading, the 'L' is optional.
2454 - Add the importlib package.
2456 - Issue #4301: Patch the logging module to add processName support, remove
2457 _check_logger_class from multiprocessing.
2459 - Issue #3325: Remove python2.x try: except: imports for old cPickle from
2462 - Issue #4959: inspect.formatargspec now works for keyword only arguments
2465 - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks
2466 for *nix machines for negative handles and large int handles. Without this check
2467 it is possible to segfault the interpreter.
2469 - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue
2472 - Issue #1225107: inspect.isclass() returned True for instances with a custom
2475 - Issue #3826 and #4791: The socket module now closes the underlying socket
2476 appropriately when it is being used via socket.makefile() objects
2477 rather than delaying the close by waiting for garbage collection to do it.
2479 - Issue #1696199: Add collections.Counter() for rapid and convenient
2482 - Issue #3860: GzipFile and BZ2File now support the context manager protocol.
2484 - Issue #4867: Fixed a crash in ctypes when passing a string to a
2485 function without defining argtypes.
2487 - Issue #4272: Add an optional argument to the GzipFile constructor to override
2488 the timestamp in the gzip stream. The default value remains the current time.
2489 The information can be used by e.g. gunzip when decompressing. Patch by
2492 - Restore Python 2.3 compatibility for decimal.py.
2494 - Issue #3638: Remove functions from _tkinter module level that depend on
2495 TkappObject to work with multiple threads.
2497 - Issue #4718: Adapt the wsgiref package so that it actually works with
2498 Python 3.x, in accordance with the `official amendments of the spec
2499 <http://www.wsgi.org/wsgi/Amendments_1.0>`_.
2501 - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float()
2502 to the decimal module.
2504 - Fractions.from_float() no longer loses precision for integers too big to
2507 - Issue #4812: add missing underscore prefix to some internal-use-only
2508 constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
2510 - Issue #4790: The nsmallest() and nlargest() functions in the heapq module
2511 did unnecessary work in the common case where no key function was specified.
2513 - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when
2514 the function is not a generator.
2516 - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case
2517 no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
2519 - Issue #4646: distutils was choking on empty options arg in the setup
2520 function. Original patch by Thomas Heller.
2522 - Issue #3767: Convert Tk object to string in tkColorChooser.
2524 - Issue #3248: Allow placing ScrolledText in a PanedWindow.
2526 - Issue #4444: Allow assertRaises() to be used as a context handler, so that
2527 the code under test can be written inline if more practical.
2529 - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@')
2530 works as expected in the interactive environment.
2532 - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by
2535 - Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char
2538 - Issue #4223: inspect.getsource() will now correctly display source code
2539 for packages loaded via zipimport (or any other conformant PEP 302
2540 loader). Original patch by Alexander Belopolsky.
2542 - Issue #4201: pdb can now access and display source code loaded via
2543 zipimport (or any other conformant PEP 302 loader). Original patch by
2544 Alexander Belopolsky.
2546 - Issue #4197: doctests in modules loaded via zipimport (or any other PEP
2547 302 conformant loader) will now work correctly in most cases (they
2548 are still subject to the constraints that exist for all code running
2549 from inside a module loaded via a PEP 302 loader and attempting to
2550 perform IO operations based on __file__). Original patch by
2551 Alexander Belopolsky.
2553 - Issues #4082 and #4512: Add runpy support to zipimport in a manner that
2554 allows backporting to maintenance branches. Original patch by
2555 Alexander Belopolsky.
2557 - Issue #4163: textwrap module: allow word splitting on a hyphen preceded by
2560 - Issue #4616: TarFile.utime(): Restore directory times on Windows.
2562 - Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the
2563 codec cannot be found. This is for compatibility with the builtin behavior.
2565 - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to
2566 give correct results in the case where one argument is a quiet NaN
2567 and the other is a finite number that requires rounding.
2569 - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
2572 - Added the subprocess.check_call_output() convenience function to get output
2573 from a subprocess on success or raise an exception on error.
2575 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
2576 support unusual filenames (such as those containing semi-colons) in
2577 Content-Disposition headers.
2579 - Issue #4384: Added logging integration with warnings module using
2580 captureWarnings(). This change includes a NullHandler which does nothing;
2581 it will be of use to library developers who want to avoid the "No handlers
2582 could be found for logger XXX" message which can appear if the library user
2583 doesn't configure logging.
2585 - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an
2588 - Issue #4529: fix the parser module's validation of try-except-finally
2591 - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
2592 not a malformed option.
2594 - Added the subprocess.check_output() convenience function to get output
2595 from a subprocess on success or raise an exception on error.
2597 - Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
2598 the corresponding tests now pass.
2600 - Issue #4537: webbrowser.UnixBrowser would fail to open the browser because
2601 it was calling the wrong open() function.
2603 - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to
2604 support unusual filenames (such as those containing semi-colons) in
2605 Content-Disposition headers.
2607 - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
2608 biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
2610 - Issue #5104: The socket module now raises OverflowError when 16-bit port and
2611 protocol numbers are supplied outside the allowed 0-65536 range on bind()
2612 and getservbyport().
2614 - Windows locale mapping updated to Vista.
2619 - Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1,
2620 and make it 2.6-compatible.
2622 - Ttk demos added in Demo/tkinter/ttk/
2624 - Issue #4677: add two list comprehension tests to pybench.
2630 - Issue #6094: Build correctly with Subversion 1.7.
2632 - Issue #5847: Remove -n switch on "Edit with IDLE" menu item.
2634 - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the
2635 linker, rather than always exit successfully. Patch by Floris Bruynooghe.
2637 - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify
2638 the order that backends for the dbm extension are checked.
2640 - Link the shared python library with $(MODLIBS).
2642 - Issue #5134: Silence compiler warnings when compiling sqlite with VC++.
2644 - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows.
2646 - Issue #4895: Use _strdup on Windows CE.
2648 - Issue #4472: "configure --enable-shared" now works on OSX
2650 - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds.
2652 - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs".
2654 - Issue #4289: Remove Cancel button from AdvancedDlg.
2656 - Issue #1656675: Register a drop handler for .py* files on Windows.
2658 - Issue #4120: Exclude manifest from extension modules in VS2008.
2660 - Issue #4091: Install pythonxy.dll in system32 again.
2662 - Issue #4018: Disable "for me" installations on Vista.
2664 - Issue #3758: Add ``patchcheck`` build target to .PHONY.
2666 - Issue #4204: Fixed module build errors on FreeBSD 4.
2672 - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError
2673 for negative arguments. Previously, it raised TypeError.
2675 - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'.
2677 - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when
2678 the GIL is released, or owned by another thread.
2680 - Issue #4122: On Windows, fix a compilation error when using the
2681 Py_UNICODE_ISSPACE macro in an extension module.
2687 - Issue #3745: Fix hashlib to always reject unicode and non buffer-api
2688 supporting objects as input no matter how it was compiled (built in
2689 implementations or external openssl library).
2691 - Issue #4397: Fix occasional test_socket failure on OS X.
2693 - Issue #4279: Fix build of parsermodule under Cygwin.
2695 - Issue #4751: hashlib now releases the GIL when hashing large buffers
2696 (with a hardwired threshold of 2048 bytes), allowing better parallelization
2697 on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner.
2699 - Issue #4051: Prevent conflict of UNICODE macros in cPickle.
2701 - Issue #4738: Each zlib object now has a separate lock, allowing to compress
2702 or decompress several streams at once on multi-CPU systems. Also, the GIL
2703 is now released when computing the CRC of a large buffer. Patch by ebfe.
2705 - Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
2707 - Issue #1040026: Fix os.times result on systems where HZ is incorrect.
2709 - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris,
2712 - Issue #4583: array.array would not always prohibit resizing when a buffer
2713 has been exported, resulting in an interpreter crash when accessing the
2717 - Issue #5228: Make functools.partial objects can now be pickled.
2722 - Issue #5450: Moved tests involving loading tk from Lib/test/test_tcl to
2723 Lib/tkinter/test/test_tkinter/test_loadtk. With this, these tests demonstrate
2724 the same behaviour as test_ttkguionly (and now also test_tk) which is to
2725 skip the tests if DISPLAY is defined but can't be used.
2727 - regrtest no longer treats ImportError as equivalent to SkipTest. Imports
2728 that should cause a test to be skipped are now done using import_module
2729 from test support, which does the conversion.
2731 - Issue #5083: New 'gui' resource for regrtest.
2738 **(For information about older versions, consult the HISTORY file.)**