Release date: 2011-06-11
Release date: 2011-05-29
Release date: 2010-11-27
Release date: 2010-11-13
Issue #10221: dict.pop(k) now has a key error message that includes the missing key (same message d[k] returns for missing keys).
Issue #10125: Don't segfault when the iterator passed to file.writelines() closes the file.
Issue #10186: Fix the SyntaxError caret when the offset is equal to the length of the offending line.
Issue #9997: Don't let the name "top" have special significance in scope resolution.
Issue #9862: Compensate for broken PIPE_BUF in AIX by hard coding its value as the default 512 when compiling on AIX.
Issue #9675: CObject use is marked as a Py3k warning, not a deprecation warning.
Issue #10068: Global objects which have reference cycles with their module's dict are now cleared again. This causes issue #7140 to appear again.
Issue #9869: Make long() and PyNumber_Long return something of type long for a class whose __long__ method returns a plain int. This fixes an interpreter crash when initializing an instance of a long subclass from an object whose __long__ method returns a plain int.
Issue #10006: type.__abstractmethods__ now raises an AttributeError.
Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid thread-local storage key.
Issue #4947: The write() method of sys.stdout and sys.stderr uses their encoding and errors attributes instead of using utf-8 in strict mode, to get the same behaviour than the print statement.
Issue #9737: Fix a crash when trying to delete a slice or an item from a memoryview object.
Restore GIL in nis_cat in case of error.
Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t.
Issue #8530: Prevent stringlib fastsearch from reading beyond the front of an array.
Issue #83755: Implicit set-to-frozenset conversion was not thread-safe.
Issue #9416: Fix some issues with complex formatting where the output with no type specifier failed to match the str output:
- format(complex(-0.0, 2.0), '-') omitted the real part from the output,
- format(complex(0.0, 2.0), '-') included a sign and parentheses.
Issue #7616: Fix copying of overlapping memoryview slices with the Intel compiler.
Issue #9926: Wrapped TestSuite subclass does not get __call__ executed
Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by Lorenzo M. Catucci.
Issue #10126: Fix distutils' test_build when Python was built with --enable-shared.
Fix typo in one sdist option (medata-check).
Issue #9199: Fix incorrect use of distutils.cmd.Command.announce.
Issue #1718574: Fix options that were supposed to accept arguments but did not in build_clib.
Issue #9281: Prevent race condition with mkdir in distutils. Patch by Arfrever.
Issue #10229: Fix caching error in gettext.
Issue #10252: Close file objects in a timely manner in distutils code and tests. Patch by Brian Brazil, completed by Éric Araujo.
Issue #10311: The signal module now restores errno before returning from its low-level signal handler. Patch by Hallvard B Furuseth.
Issue #10038: json.loads() on str should always return unicode (regression from Python 2.6). Patch by Walter Dörwald.
Issue #120176: Wrapped TestSuite subclass does not get __call__ executed.
Issue #6706: asyncore accept() method no longer raises EWOULDBLOCK/ECONNABORTED on incomplete connection attempt but returns None instead.
Issue #10266: uu.decode didn't close in_file explicitly when it was given as a filename. Patch by Brian Brazil.
Issue #10246: uu.encode didn't close file objects explicitly when filenames were given to it. Patch by Brian Brazil.
Issue #10253: FileIO leaks a file descriptor when trying to open a file for append that isn't seekable. Patch by Brian Brazil.
Issue #6105: json.dumps now respects OrderedDict's iteration order.
Issue #9295: Fix a crash under Windows when calling close() on a file object with custom buffering from two threads at once.
Issue #5027: The standard xml namespace is now understood by xml.sax.saxutils.XMLGenerator as being bound to http://www.w3.org/XML/1998/namespace. Patch by Troy J. Farrell.
Issue #10163: Skip unreadable registry keys during mimetypes initialization.
Issue #5117: Fixed root directory related issue on posixpath.relpath() and ntpath.relpath().
Issue #9409: Fix the regex to match all kind of filenames, for interactive debugging in doctests.
Issue #6612: Fix site and sysconfig to catch os.getcwd() error, eg. if the current directory was deleted. Patch written by W. Trevor King.
Issue #10045: Improved performance when writing after seeking past the end of the "file" in cStringIO.
Issue #9948: Fixed problem of losing filename case information.
Issue #9437: Fix building C extensions with non-default LDFLAGS.
Issue #9759: GzipFile now raises ValueError when an operation is attempted after the file is closed. Patch by Jeffrey Finkelstein.
Issue #9042: Fix interaction of custom translation classes and caching in gettext.
Issue #9065: tarfile no longer uses "root" as the default for the uname and gname field.
Issue #1050268: parseaddr now correctly quotes double quote and backslash characters that appear inside quoted strings in email addresses.
Issue #10004: quoprimime no longer generates a traceback when confronted with invalid characters after '=' in a Q-encoded word.
Issue #9950: Fix socket.sendall() crash or misbehaviour when a signal is received. Now sendall() properly calls signal handlers if necessary, and retries sending if these returned successfully, including on sockets with a timeout.
Issue #9947: logging: Fixed locking bug in stopListening.
Issue #9945: logging: Fixed locking bugs in addHandler/removeHandler.
Issue #9936: Fixed executable lines' search in the trace module.
Issue #9928: Properly initialize the types exported by the bz2 module.
Issue #9854: The default read() implementation in io.RawIOBase now handles non-blocking readinto() returning None correctly.
Issue #9729: Fix the signature of SSLSocket.recvfrom() and SSLSocket.sendto() to match the corresponding socket methods. Also, fix various SSLSocket methods to raise socket.error rather than an unhelpful TypeError when called on an unconnected socket. Original patch by Andrew Bennetts.
Issue #9826: OrderedDict.__repr__ can now handle self-referential values: d['x'] = d.
Issue #767645: Set os.path.supports_unicode_filenames to True on Mac OS X.
Issue #9837: The read() method of ZipExtFile objects (as returned by ZipFile.open()) could return more bytes than requested.
Issue #9825: removed __del__ from the definition of collections.OrderedDict. This prevents user-created self-referencing ordered dictionaries from becoming permanently uncollectable GC garbage. The downside is that removing __del__ means that the internal doubly-linked list has to wait for GC collection rather than freeing memory immediately when the refcnt drops to zero.
Issue #9816: random.Random.jumpahead(n) did not produce a sufficiently different internal state for small values of n. Fixed by salting the value.
Issue #9792: In case of connection failure, socket.create_connection() would swallow the exception and raise a new one, making it impossible to fetch the original errno, or to filter timeout errors. Now the original error is re-raised.
Issue #9758: When fcntl.ioctl() was called with mutable_flag set to True, and the passed buffer was exactly 1024 bytes long, the buffer wouldn't be updated back after the system call. Original patch by Brian Brazil.
Issue #1100562: Fix deep-copying of objects derived from the list and dict types. Patch by Michele Orrù and Björn Lindqvist.
Issue #7005: Fixed output of None values for RawConfigParser.write and ConfigParser.write.
Issue #808164: Fixed socket.close to avoid references to globals, to avoid issues when socket.close is called from a __del__ method.
Issue #2986: difflib.SequenceMatcher gets a new parameter, autojunk, which can be set to False to turn off the previously undocumented 'popularity' heuristic. Patch by Terry Reedy and Eli Bendersky
Issue #8797: urllib2 does a retry for Basic Authentication failure instead of falling into recursion.
Issue #1194222: email.utils.parsedate now returns RFC2822 compliant four character years even if the message contains RFC822 two character years.
Issue #8750: Fixed MutableSet's methods to correctly handle reflexive operations, namely x -= x and x ^= x.
Issue #9129: smtpd.py is vulnerable to DoS attacks deriving from missing error handling when accepting a new connection.
Issue #658749: asyncore's connect() method now correctly interprets winsock errors.
Issue #9501: Fixed logging regressions in cleanup code.
Issue #9214: Set operations on KeysView or ItemsView in the collections module now correctly return a set. (Patch by Eli Bendersky.)
Issue #9617: Signals received during a low-level write operation aren't ignored by the buffered IO layer anymore.
Issue #2521: Use weakrefs on for caching in the abc module, so that classes are not held onto after they are deleted elsewhere.
Issue #9626: the view methods for collections.OrderedDict() were returning the unordered versions inherited from dict. Those methods are now overridden to provide ordered views.
Issue #8688: MANIFEST files created by distutils now include a magic comment indicating they are generated. Manually maintained MANIFESTs without this marker will not be overwritten or removed.
Issue #7467: when reading a file from a ZIP archive, its CRC is checked and a BadZipfile error is raised if it doesn't match (as used to be the case in Python 2.5 and earlier).
Issue #9550: a BufferedReader could issue an additional read when the original read request had been satisfied, which could block indefinitely when the underlying raw IO channel was e.g. a socket. Report and original patch by Jason V. Miller.
Issue #9551: Don't raise TypeError when setting the value to None for SafeConfigParser instances constructed with allow_no_value == True.
Issue #6915: Under Windows, os.listdir() didn't release the Global Interpreter Lock around all system calls. Original patch by Ryan Kelly.
Issue #3757: thread-local objects now support cyclic garbage collection. Thread-local objects involved in reference cycles will be deallocated timely by the cyclic GC, even if the underlying thread is still running.
Issue #6231: Fix xml.etree.ElementInclude to include the tail of the current node.
Issue #6869: Fix a refcount problem in the _ctypes extension.
Issue5504 - ctypes should now work with systems where mmap can't be PROT_WRITE and PROT_EXEC.
Fix Issue8280 - urllib2's Request method will remove fragements in the url. This is how it is supposed to work, wget and curl do the same. Previous behavior was wrong.
Issue #2944: asyncore doesn't handle connection refused correctly.
Issue #3196: email header decoding is now forgiving if an RFC2047 encoded word encoded in base64 is lacking padding.
Issue #9444: Argparse now uses the first element of prefix_chars as the option character for the added 'h/help' option if prefix_chars does not contain a '-', instead of raising an error.
Issue #9354: Provide getsockopt() in asyncore's file_wrapper.
Issue #9428: Fix running scripts with the profile/cProfile modules from the command line.
Issue #7781: Fix restricting stats by entry counts in the pstats interactive browser.
Issue #9209: Do not crash in the pstats interactive browser on invalid regular expressions.
Issue #7372: Fix pstats regression when stripping paths from profile data generated with the profile module.
Issue #4108: In urllib.robotparser, if there are multiple 'User-agent: *' entries, consider the first one.
Issue #8397: Raise an error when attempting to mix iteration and regular reads on a BZ2File object, rather than returning incorrect results.
Issue #5294: Fix the behavior of pdb's "continue" command when called in the top-level debugged frame.
Issue #5727: Restore the ability to use readline when calling into pdb in doctests.
Issue #6719: In pdb, do not stop somewhere in the encodings machinery if the source file to be debugged is in a non-builtin encoding.
Issue #8048: Prevent doctests from failing when sys.displayhook has been reassigned.
Issue #8015: In pdb, do not crash when an empty line is entered as a breakpoint command.
Issue #9448: Fix a leak of OS resources (mutexes or semaphores) when re-initializing a buffered IO object by calling its __init__ method.
Issue #7909: Do not touch paths with the special prefixes \\.\ or \\?\ in ntpath.normpath().
Issue #5146: Handle UID THREAD command correctly in imaplib.
Issue #5147: Fix the header generated for cookie files written by http.cookiejar.MozillaCookieJar.
Issue #8198: In pydoc, output all help text to the correct stream when sys.stdout is reassigned.
Issue #7395: Fix tracebacks in pstats interactive browser.
Issue #8230: Fix Lib/test/sortperf.py.
Issue #1713: Fix os.path.ismount(), which returned true for symbolic links across devices.
Issue #8826: Properly load old-style "expires" attribute in http.cookies.
Issue #1690103: Fix initial namespace for code run with trace.main().
Issue #8471: In doctest, properly reset the output stream to an empty string when Unicode was previously output.
Issue #8620: when a Cmd is fed input that reaches EOF without a final newline, it no longer truncates the last character of the last command line.
Issue #6213: Implement getstate() and setstate() methods of utf-8-sig and utf-16 incremental encoders.
Issue #7113: Speed up loading in ConfigParser. Patch by Łukasz Langa.
Issue #3704: cookielib was not properly handling URLs with a / in the parameters.
Issue #9032: XML-RPC client retries the request on EPIPE error. The EPIPE error occurs when the server closes the socket and the client sends a big XML-RPC request.
Issue #5542: Remove special logic that closes HTTPConnection socket on EPIPE.
Issue #4629: getopt raises an error if an argument ends with = whereas getopt doesn't except a value (eg. --help= is rejected if getopt uses ['help='] long options).
Issue #7895: platform.mac_ver() no longer crashes after calling os.fork()
Issue #5395: array.fromfile() would raise a spurious EOFError when an I/O error occurred. Now an IOError is raised instead. Patch by chuck (Jan Hosang).
Issue #7646: The fnmatch pattern cache no longer grows without bound.
Issue #9136: Fix 'dictionary changed size during iteration' RuntimeError produced when profiling the decimal module. This was due to a dangerous iteration over 'locals()' in Context.__init__.
Fix extreme speed issue in Decimal.pow when the base is an exact power of 10 and the exponent is tiny (for example, Decimal(10) ** Decimal('1e-999999999')).
Issue #9161: Fix regression in optparse's acceptance of unicode strings in add_option calls.
Issue #9130: Fix validation of relative imports in parser module.
Issue #9128: Fix validation of class decorators in parser module.
Issue #9164: Ensure sysconfig handles dupblice archs while building on OSX
Issue #9315: Fix for the trace module to record correct class name for tracing methods.
Issue #9054: Fix a crash occurring when using the pyexpat module with expat version 2.0.1.
Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression introduced by issue #9324.
Issue #8734: Avoid crash in msvcrt.get_osfhandle() when an invalid file descriptor is provided. Patch by Pascal Chambon.
Issue #7736: Release the GIL around calls to opendir() and closedir() in the posix module. Patch by Marcin Bachry.
As a result of issue #2521, the _weakref module is now compiled into the interpreter by default.
Issue #9324: Add parameter validation to signal.signal on Windows in order to prevent crashes.
Issue #9526: Remove some outdated (int) casts that were preventing the array module from working correctly with arrays of more than 2**31 elements.
Fix memory leak in ssl._ssl._test_decode_cert.
Issue #8065: Fix memory leak in readline module (from failure to free the result of history_get_history_state()).
Issue #9450: Fix memory leak in readline.replace_history_item and readline.remove_history_item for readline version >= 5.0.
Issue #8105: Validate file descriptor passed to mmap.mmap on Windows.
Issue #1019882: Fix IndexError when loading certain hotshot stats.
Issue #9422: Fix memory leak when re-initializing a struct.Struct object.
Issue #7900: The getgroups(2) system call on MacOSX behaves rather oddly compared to other unix systems. In particular, os.getgroups() does not reflect any changes made using os.setgroups() but basicly always returns the same information as the id command.
os.getgroups() can now return more than 16 groups on MacOSX.
Issue #9277: Fix bug in struct.pack for bools in standard mode (e.g., struct.pack('>?')): if conversion to bool raised an exception then that exception wasn't properly propagated on machines where char is unsigned.
Issue #7567: Don't call `setupterm' twice.
Release date: 2010-07-03
Release date: 2010-06-20
Release date: 2010-06-05
Issue #5753: A new C API function, :cfunc:`PySys_SetArgvEx`, allows embedders of the interpreter to set sys.argv without also modifying sys.path. This helps fix CVE-2008-5983.
Release date: 2010-05-08
Issue #8681: Make the zlib module's error messages more informative when the zlib itself doesn't give any detailed explanation.
Issue #8571: Fix an internal error when compressing or decompressing a chunk larger than 1GB with the zlib module's compressor and decompressor objects.
Issue #8573: asyncore _strerror() function might throw ValueError.
Issue #8483: asyncore.dispatcher's __getattr__ method produced confusing error messages when accessing undefined class attributes because of the cheap inheritance with the underlying socket object. The cheap inheritance has been deprecated.
Issue #4265: shutil.copyfile() was leaking file descriptors when disk fills. Patch by Tres Seaver.
Issue #7755: Use an unencumbered audio file for tests.
Issue #8621: uuid.uuid4() returned the same sequence of values in the parent and any children created using os.fork on Mac OS X 10.6.
Issue #8313: traceback.format_exception_only() encodes unicode message to ASCII with backslashreplace error handler if str(value) failed.
Issue #8567: Fix precedence of signals in Decimal module: when a Decimal operation raises multiple signals and more than one of those signals is trapped, the specification determines the order in which the signals should be handled. In many cases this order wasn't being followed, leading to the wrong Python exception being raised.
Issue #7865: The close() method of :mod:`io` objects should not swallow exceptions raised by the implicit flush(). Also ensure that calling close() several times is supported. Patch by Pascal Chambon.
Issue #8576: logging updated to remove usage of find_unused_port().
Issue #4687: Fix accuracy of garbage collection runtimes displayed with gc.DEBUG_STATS.
Issue #8354: The siginterrupt setting is now preserved for all signals, not just SIGCHLD.
Issue #7192: webbrowser.get("firefox") now works on Mac OS X, as does webbrowser.get("safari").
Issue #8577: distutils.sysconfig.get_python_inc() now makes a difference between the build dir and the source dir when looking for "python.h" or "Include".
Issue #8464: tarfile no longer creates files with execute permissions set when mode="w|" is used.
Issue #7834: Fix connect() of Bluetooth L2CAP sockets with recent versions of the Linux kernel. Patch by Yaniv Aknin.
Issue #6312: Fix http HEAD request when the transfer encoding is chunked. It should correctly return an empty response now.
Issue #7490: To facilitate sharing of doctests between 2.x and 3.x test suites, the IGNORE_EXCEPTION_DETAIL directive now also ignores the module location of the raised exception. Based on initial patch by Lennart Regebro.
Issue #8086: In :func:`ssl.DER_cert_to_PEM_cert()`, fix missing newline before the certificate footer. Patch by Kyle VanderBeek.
Issue #8546: Reject None given as the buffering argument to _pyio.open().
Issue #8549: Fix compiling the _ssl extension under AIX. Patch by Sridhar Ratnakumar.
Issue #6656: Fix locale.format_string to handle escaped percents and mappings.
Issue #2302: Fix a race condition in SocketServer.BaseServer.shutdown, where the method could block indefinitely if called just before the event loop started running. This also fixes the occasional freezes witnessed in test_httpservers.
Issue #5103: SSL handshake would ignore the socket timeout and block indefinitely if the other end didn't respond.
The do_handshake() method of SSL objects now adjusts the blocking mode of the SSL structure if necessary (as other methods already do).
Issue #7507: Quote "!" in pipes.quote(); it is special to some shells.
Issue #5238: Calling makefile() on an SSL object would prevent the underlying socket from being closed until all objects get truely destroyed.
Issue #7943: Fix circular reference created when instantiating an SSL socket. Initial patch by Péter Szabó.
Issue #8451: Syslog module now uses basename(sys.argv[0]) instead of the string "python" as the ident. openlog() arguments are all optional and keywords.
Issue #8108: Fix the unwrap() method of SSL objects when the socket has a non-infinite timeout. Also make that method friendlier with applications wanting to continue using the socket in clear-text mode, by disabling OpenSSL's internal readahead. Thanks to Darryl Miles for guidance.
Issue #8484: Load all ciphers and digest algorithms when initializing the _ssl extension, such that verification of some SSL certificates doesn't fail because of an "unknown algorithm".
Issue #8437: Fix test_gdb failures, patch written by Dave Malcolm
Issue #4814: The timeout parameter is now applied also for connections resulting from PORT/EPRT commands.
Issue #8463: Add missing reference to bztar in shutil's documentation.
Issue #8438: Remove reference to the missing "surrogateescape" encoding error handler from the new IO library.
Issue #3817: ftplib.FTP.abort() method now considers 225 a valid response code as stated in RFC-959 at chapter 5.4.
Issue #8279: Fix test_gdb failures.
Issue #8322: Add a ciphers argument to SSL sockets, so as to change the available cipher list. Helps fix test_ssl with OpenSSL 1.0.0.
Issue #2987: RFC 2732 support for urlparse (IPv6 addresses). Patch by Tony Locke and Hans Ulrich Niedermann.
Issue #7585: difflib context and unified diffs now place a tab between filename and date, conforming to the 'standards' they were originally designed to follow. This improves compatibility with patch tools.
Issue #7472: Fixed typo in email.encoders module; messages using ISO-2022 character sets will now consistently use a Content-Transfer-Encoding of 7bit rather than sometimes being marked as 8bit.
Issue #8330: Fix expected output in test_gdb.
Issue #8374: Update the internal alias table in the :mod:`locale` module to cover recent locale changes and additions.
Release date: 2010-04-10
Issue #5277: Fix quote counting when parsing RFC 2231 encoded parameters.
Issue #8321: Give access to OpenSSL version numbers from the ssl module, using the new attributes ssl.OPENSSL_VERSION, ssl.OPENSSL_VERSION_INFO and ssl.OPENSSL_VERSION_NUMBER.
Issue #8310: Allow dis to examine new style classes.
Issue #8257: The Decimal construct now accepts a float instance directly, converting that float to a Decimal of equal value:
>>> Decimal(1.1)
Decimal('1.100000000000000088817841970012523233890533447265625')
collections.Counter() now supports a subtract() method.
The functools module now has a total_ordering() class decorator to simplify the specification of rich comparisons.
The functools module also adds cmp_to_key() as a tool to transition old-style comparison functions to new-style key-functions.
Issue #8294: The Fraction constructor now accepts Decimal and float instances directly.
Issue #7279: Comparisons involving a Decimal signaling NaN now signal InvalidOperation instead of returning False. (Comparisons involving a quiet NaN are unchanged.) Also, Decimal quiet NaNs are now hashable; Decimal signaling NaNs remain unhashable.
Issue #2531: Comparison operations between floats and Decimal instances now return a result based on the numeric values of the operands; previously they returned an arbitrary result based on the relative ordering of id(float) and id(Decimal).
Issue #8233: When run as a script, py_compile.py optionally takes a single argument - which tells it to read files to compile from stdin. Each line is read on demand and the named file is compiled immediately. (Original patch by Piotr Ożarowski).
Issue #3135: Add inspect.getcallargs(), which binds arguments to a function like a normal call.
Backwards incompatible change: Unicode codepoints line tabulation (0x0B) and form feed (0x0C) are now considered linebreaks, as specified in Unicode Standard Annex #14. See issue #7643. http://www.unicode.org/reports/tr14/
Comparisons using one of <, <=, >, >= between a complex instance and a Fractions instance now raise TypeError instead of returning True/False. This makes Fraction <=> complex comparisons consistent with int <=> complex, float <=> complex, and complex <=> complex comparisons.
Addition of WeakSet to the weakref module.
logging: Added LOG_FTP to SysLogHandler and updated documentation.
Issue #8205: Remove the "Modules" directory from sys.path when Python is running from the build directory (POSIX only).
Issue #7667: Fix doctest failures with non-ASCII paths.
Issue #7512: shutil.copystat() could raise an OSError when the filesystem didn't support chflags() (for example ZFS under FreeBSD). The error is now silenced.
Issue #7703: ctypes supports both buffer() and memoryview(). The former is deprecated.
Issue #7860: platform.uname now reports the correct 'machine' type when Python is running in WOW64 mode on 64 bit Windows.
logging: Added getChild utility method to Logger and added isEnabledFor method to LoggerAdapter.
Issue #8201: logging: Handle situation of non-ASCII and Unicode logger names existing at the same time, causing a Unicode error when configuration code attempted to sort the existing loggers.
Issue #8200: logging: Handle errors when multiprocessing is not fully loaded when logging occurs.
Issue #3890, #8222: Fix recv() and recv_into() on non-blocking SSL sockets. Also, enable the SSL_MODE_AUTO_RETRY flag on SSL sockets, so that blocking reads and writes are always retried by OpenSSL itself.
Issue #8179: Fix macpath.realpath() on a non-existing path.
Issue #8024: Update the Unicode database to 5.2.
Issue #8104: socket.recv_into() and socket.recvfrom_into() now support writing into objects supporting the new buffer API, for example bytearrays or memoryviews.
Issue #4961: Inconsistent/wrong result of askyesno function in tkMessageBox with Tcl/Tk-8.5.
Issue #8140: Extend compileall to compile single files. Add -i option.
Issue #7356: ctypes.util: Make parsing of ldconfig output independent of the locale.
Issue #7774: Set sys.executable to an empty string if argv[0] has been set to an non existent program name and Python is unable to retrieve the real program name.
Issue #8117: logging: Improved algorithm for computing initial rollover time for TimedRotatingFileHandler by using the modification time of an existing log file to compute the next rollover time. If the log file does not exist, the current time is used as the basis for the computation.
Issue #6472: The xml.etree package is updated to ElementTree 1.3. The cElementTree module is updated too.
Issue #7880: Fix sysconfig when the python executable is a symbolic link.
Issue #7624: Fix isinstance(foo(), collections.Callable) for old-style classes.
Issue #7143: email: get_payload() used to strip any trailing newline from a base64 transfer-encoded payload after decoding it; it no longer does. This is a behavior change, so email's minor version number is now bumped, to version 4.0.2, for the 2.7 release.
Issue #8235: _socket: Add the constant SO_SETFIB. SO_SETFIB is a socket option available on FreeBSD 7.1 and newer.
Issue #8038: unittest.TestCase.assertNotRegexpMatches
Addition of -b command line option to unittest for buffering stdout / stderr during test runs.
Issue #1220212: Added os.kill support for Windows, including support for sending CTRL+C and CTRL+BREAK events to console subprocesses.
Release date: 2010-03-06
Release date: 2010-02-06
Release date: 2010-01-09
The __complex__() method is now looked up on the class of instances to make it consistent with other special methods.
Issue #7462: Implement the stringlib fast search algorithm for the rfind, rindex, rsplit and rpartition methods. Patch by Florent Xicluna.
Issue #5080: A number of functions and methods previously produced a DeprecationWarning when passed a float argument where an integer was expected. These functions and methods now raise TypeError instead. The majority of the effects of this change are in the extension modules, but some core functions and methods are affected: notably the 'chr', 'range' and 'xrange' builtins, and many unicode/str methods.
Issue #7604: Deleting an unset slotted attribute did not raise an AttributeError.
Issue #7534: Fix handling of IEEE specials (infinities, nans, negative zero) in ** operator. The behaviour now conforms to that described in C99 Annex F.
Issue #7579: The msvcrt module now has docstrings for all its functions.
Issue #7413: Passing '0' as the separator to datetime.datetime.isoformat() used to drop the time part of the result.
Issue #1811: Improve accuracy and cross-platform consistency for true division of integers: the result of a/b is now correctly rounded for ints a and b (at least on IEEE 754 platforms), and in particular does not depend on the internal representation of a long.
Issue #6108: unicode(exception) and str(exception) should return the same message when only __str__() (and not __unicode__()) is overridden in the subclass.
Issue #6834: Replace the implementation for the 'python' and 'pythonw' executables on OSX.
These executables now work properly with the arch(1) command: arch -ppc python will start a universal binary version of python in PPC mode (unlike previous releases).
Issue #1680159: Unicode coercion during an 'in' operation no longer masks the underlying error when the coercion fails for the left hand operand.
Issue #7491: Metaclass's __cmp__ method was ignored.
Issue #7466: Segmentation fault when the garbage collector is called in the middle of populating a tuple. Patch by Florent Xicluna.
Release date: 2009-12-05
Issue #7419: locale.setlocale() could crash the interpreter on Windows when called with invalid values.
Issue #3382: 'F' formatting for float and complex now convert the result to upper case. This only affects 'inf' and 'nan', since 'f' no longer converts to 'g' for large values.
Remove switch from "%f" formatting to "%g" formatting for floats larger than 1e50 in absolute value.
Remove restrictions on precision when formatting floats. E.g., "%.120g" % 1e-100 used to raise OverflowError, but now gives the requested 120 significant digits instead.
Add Py3k warnings for parameter names in parentheses.
Issue #7362: Give a proper error message for def f((x)=3): pass.
Issue #7085: Fix crash when importing some extensions in a thread on MacOSX 10.6.
Issue #7117: repr(x) for a float x returns a result based on the shortest decimal string that's guaranteed to round back to x under correct rounding (with round-half-to-even rounding mode). Previously it gave a string based on rounding x to 17 decimal digits. repr(x) for a complex number behaves similarly. On platforms where the correctly-rounded strtod and dtoa code is not supported (see below), repr is unchanged.
Issue #7117: On almost all platforms: float-to-string and string-to-float conversions within Python are now correctly rounded. Places these conversions occur include: str for floats and complex numbers; the float and complex constructors; old-style and new-style numeric formatting; serialization and deserialization of floats and complex numbers using marshal, pickle and json; parsing of float and imaginary literals in Python code; Decimal-to-float conversion.
The conversions use a Python-adapted version of David Gay's well-known dtoa.c, providing correctly-rounded strtod and dtoa C functions. This code is supported on Windows, and on Unix-like platforms using gcc, icc or suncc as the C compiler. There may be a small number of platforms on which correct operation of this code cannot be guaranteed, so the code is not used: notably, this applies to platforms where the C double format is not IEEE 754 binary64, and to platforms on x86 hardware where the x87 FPU is set to 64-bit precision and Python's configure script is unable to determine how to change the FPU precision. On these platforms conversions use the platform strtod and dtoa, as before.
Issue #7117: Backport round implementation from Python 3.x. round() now uses the correctly-rounded string <-> float conversions described above (when available), and so produces correctly rounded results that will display nicely under the float repr. There are two related small changes: (1) round now accepts any class with an __index__() method for its second argument (but no longer accepts floats for the second argument), and (2) an excessively large second integer argument (e.g., round(1.234, 10**100)) no longer raises an exception.
Issue #1757126: Fix the cyrillic-asian alias for the ptcp154 encoding.
Fix several issues with compile(). The input can now contain Windows and Mac newlines and is no longer required to end in a newline.
Remove length limitation when constructing a complex number from a unicode string.
Issue #7244: itertools.izip_longest() no longer ignores exceptions raised during the formation of an output tuple.
Issue #1087418: Boost performance of bitwise operations for longs.
Issue #1722344: threading._shutdown() is now called in Py_Finalize(), which fixes the problem of some exceptions being thrown at shutdown when the interpreter is killed. Patch by Adam Olsen.
Issue #7168: Document PyFloat_AsString() and PyFloat_AsReprString(), and note that they are unsafe and deprecated.
Issue #7120: logging: Remove import of multiprocessing which is causing crash in GAE.
Issue #7140: The __dict__ of a module should not be cleared unless the module is the only object holding a reference to it.
Issue #1754094: Improve the stack depth calculation in the compiler. There should be no other effect than a small decrease in memory use. Patch by Christopher Tur Lesniewski-Laas.
Issue #7084: Fix a (very unlikely) crash when printing a list from one thread, and mutating it from another one. Patch by Scott Dial.
Issue #1571184: The Unicode database contains properties for more characters. The tables for code points representing numeric values, white spaces or line breaks are now generated from the official Unicode Character Database files, and include information from the Unihan.txt file.
Issue #7050: Fix a SystemError when trying to use unpacking and augmented assignment.
Issue #5329: Fix os.popen* regression from 2.5 with commands as a sequence running through the shell. Patch by Jean-Paul Calderone and Jani Hakala.
Issue #7019: Raise ValueError when unmarshalling bad long data, instead of producing internally inconsistent Python longs.
Issue #6990: Fix threading.local subclasses leaving old state around after a reference cycle GC which could be recycled by new locals.
Issue #6300: unicode.encode, unicode.decode, str.decode, and str.encode now take keyword arguments.
Issue #6922: Fix an infinite loop when trying to decode an invalid UTF-32 stream with a non-raising error handler like "replace" or "ignore".
Issue #6713: Improve performance of base 10 int -> string and long -> string conversions.
Issue #1590864: Fix potential deadlock when mixing threads and fork().
Issue #6844: Do not emit DeprecationWarnings when accessing a "message" attribute on exceptions that was set explicitly.
Issue #6846: Fix bug where bytearray.pop() returns negative integers.
classmethod() no longer checks if its argument is callable.
Issue #6750: A text file opened with io.open() could duplicate its output when writing from multiple threads at the same time.
Issue #6704: Improve the col_offset in AST for "for" statements with a target of tuple unpacking.
Issue #6707: dir() on an uninitialized module caused a crash.
Issue #6540: Fixed crash for bytearray.translate() with invalid parameters.
Issue #6573: set.union() stopped processing inputs if an instance of self occurred in the argument chain.
Issue #1616979: Added the cp720 (Arabic DOS) encoding.
Issue #6070: On posix platforms import no longer copies the execute bit from the .py file to the .pyc file if it is set. Patch by Marco N.
Issue #4618: When unicode arguments are passed to print(), the default separator and end should be unicode also.
Issue #6119: Fixed an incorrect Py3k warning about order comparisons of built-in functions and methods.
Issue #6347: Include inttypes.h as well as stdint.h in pyport.h. This fixes a build failure on HP-UX: int32_t and uint32_t are defined in inttypes.h instead of stdint.h on that platform.
Issue #4856: Remove checks for win NT.
Issue #2016: Fixed a crash in a corner case where the dictionary of keyword arguments could be modified during the function call setup.
Removed the ipaddr module.
Issue #6329: Fixed iteration for memoryview objects (it was being blocked because it wasn't recognized as a sequence).
Issue #6289: Encoding errors from compile() were being masked.
When no module is given in a relative import, the module field of the ImportFrom AST node is now None instead of an empty string.
Assignment to None using import statements now raises a SyntaxError.
Issue #4547: When debugging a very large function, it was not always possible to update the lineno attribute of the current frame.
Issue #5330: C functions called with keyword arguments were not reported by the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
Issue #5982: staticmethod and classmethod now expose the wrapped function with __func__.
Added support for multiple context managers in the same with-statement. Deprecated contextlib.nested() which is no longer needed.
Issue #6101: A new opcode, SETUP_WITH, has been added to speed up the with statement and correctly lookup the __enter__ and __exit__ special methods.
Issue #5829: complex("1e500") no longer raises OverflowError. This makes it consistent with float("1e500") and interpretation of real and imaginary literals.
Issue #3527: Removed Py_WIN_WIDE_FILENAMES which is not used any more.
__instancecheck__() and __subclasscheck__() are now completely ignored on classic classes and instances.
Issue #5994: The marshal module now has docstrings.
Issue #5981: Fix three minor inf/nan issues in float.fromhex:
Issue #5920: For float.__format__(), change the behavior with the empty presentation type (that is, not one of 'e', 'f', 'g', or 'n') to be like 'g' but with at least one decimal point and with a default precision of 12. Previously, the behavior the same but with a default precision of 6. This more closely matches str(), and reduces surprises when adding alignment flags to the empty presentation type. This also affects the new complex.__format__ in the same way.
Issue #5890: In subclasses of 'property' the __doc__ attribute was shadowed by classtype's, even if it was None. property now inserts the __doc__ into the subclass instance __dict__.
Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal sequences. Patch by Nick Barnes and Victor Stinner.
Issue #1588: Add complex.__format__. For example, format(complex(1, 2./3), '.5') now produces a sensible result.
Issue #5864: Fix empty format code formatting for floats so that it never gives more than the requested number of significant digits.
Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h.
Issue #4971: Fix titlecase for characters that are their own titlecase, but not their own uppercase.
Issue #5835: Deprecate PyOS_ascii_formatd and replace it with _PyOS_double_to_string or PyOS_double_to_string.
Issue #5283: Setting __class__ in __del__ caused a segfault.
Issue #5816: complex(repr(z)) now recovers z exactly, even when z involves nans, infs or negative zeros.
Implement PEP 378, Format Specifier for Thousands Separator, for floats, ints, and longs.
Issue #5515: 'n' formatting for ints, longs, and floats handles leading zero formatting poorly.
Issue #5772: For float.__format__, don't add a trailing ".0" if we're using no type code and we have an exponent.
Issue #3166: Make long -> float (and int -> float) conversions correctly rounded.
Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on some built-in types.
Issue #1869: Fix a couple of minor round() issues. round(5e15+1) was giving 5e15+2; round(-0.0) was losing the sign of the zero.
Issue #5759: float() didn't call __float__ on str subclasses.
Issue #5704: The "-3" command-line option now implies "-t".
Issue #2170: Refactored xml.dom.minidom.normalize, increasing both its clarity and its speed.
Issue #2396: The memoryview object was backported from Python 3.1.
Fix a problem in PyErr_NormalizeException that leads to "undetected errors" when hitting the recursion limit under certain circumstances.
Issue #1665206: Remove the last eager import in _warnings.c and make it lazy.
Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to the end sys.path, for compatibility with the system install of Python.
Issue #4688: Add a heuristic so that tuples and dicts containing only untrackable objects are not tracked by the garbage collector. This can reduce the size of collections and therefore the garbage collection overhead on long-running programs, depending on their particular use of datatypes.
Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to improve its performance. Long divisions and remainder operations are now between 50% and 150% faster.
Issue #4258: Make it possible to use base 2**30 instead of base 2**15 for the internal representation of integers, for performance reasons. Base 2**30 is enabled by default on 64-bit machines. Add --enable-big-digits option to configure, which overrides the default. Add sys.long_info structseq to provide information about the internal format.
Issue #4034: Fix weird attribute error messages of the traceback object. (As a result traceback.__members__ no longer exists.)
Issue #4474: PyUnicode_FromWideChar now converts characters outside the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4 and sizeof(Py_UNICODE) == 2.
Issue #5237: Allow auto-numbered fields in str.format(). For example: '{} {}'.format(1, 2) == '1 2'.
Issue #3652: Make the 'line' argument for warnings.showwarning() a requirement. Means the DeprecationWarning from Python 2.6 can go away.
Issue #5247: Improve error message when unknown format codes are used when using str.format() with str, unicode, long, int, and float arguments.
Running Python with the -3 option now also warns about classic division for ints and longs.
Issue #5260: Long integers now consume less memory: average saving is 2 bytes per long on a 32-bit system and 6 bytes per long on a 64-bit system.
Issue #5186: Reduce hash collisions for objects with no __hash__ method by rotating the object pointer by 4 bits to the right.
Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs: it now forces its argument to double before testing for infinity.
Issue #4978: Passing keyword arguments as unicode strings is now allowed.
Issue #1242657: the __len__() and __length_hint__() calls in several tools were suppressing all exceptions. These include list(), filter(), map(), zip(), and bytearray().
os.ftruncate raises OSErrors instead of IOErrors for consistency with other os functions.
Issue #4991: Passing invalid file descriptors to io.FileIO now raises an OSError.
Issue #4807: Port the _winreg module to Windows CE.
Issue #4935: The overflow checking code in the expandtabs() method common to str, bytes and bytearray could be optimized away by the compiler, letting the interpreter segfault instead of raising an error.
Issue #3720: Fix a crash when an iterator modifies its class and removes its __next__ method.
Issue #4893: Use NT threading on CE.
Issue #4915: Port sysmodule to Windows CE.
Issue #4074: Change the criteria for doing a full garbage collection (i.e. collecting the oldest generation) so that allocating lots of objects without destroying them does not show quadratic performance. Based on a proposal by Martin von Löwis at http://mail.python.org/pipermail/python-dev/2008-June/080579.html.
Issue #4850: Change COUNT_ALLOCS variables to Py_ssize_t.
Issue #1180193: When importing a module from a .pyc (or .pyo) file with an existing .py counterpart, override the co_filename attributes of all code objects if the original filename is obsolete (which can happen if the file has been renamed, moved, or if it is accessed through different paths). Patch by Ziga Seilnacht and Jean-Paul Calderone.
Issue #4075: Use OutputDebugStringW() in Py_FatalError.
Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open file with `str' filename on Windows.
Issue #3680: Reference cycles created through a dict, set or deque iterator did not get collected.
Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types where the tp_hash and tp_dict slots are both NULL.
Issue #4764: With io.open, IOError.filename is set when trying to open a directory on POSIX systems.
Issue #4764: IOError.filename is set when trying to open a directory on POSIX systems.
Issue #4759: None is now allowed as the first argument of bytearray.translate(). It was always allowed for bytes.translate().
Added test case to ensure attempts to read from a file opened for writing fail.
Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always print elapsed times, not only when some objects are uncollectable/unreachable. Original patch by Neil Schemenauer.
Issue #3439: Add a bit_length method to int and long.
Issue #2183: Simplify and optimize bytecode for list comprehensions. Original patch by Neal Norwitz.
Issue #4597: Fixed exception handling when the __exit__ function of a context manager returns a value that cannot be converted to a bool.
Issue #4597: Fixed several opcodes that weren't always propagating exceptions.
Issue #4445: Replace sizeof(PyStringObject) with offsetof(PyStringObject, ob_sval) + 1 when allocating memory for str instances. On a typical machine this saves 3 bytes of memory (on average) per string allocation.
Issue #3996: On Windows, the PyOS_CheckStack function would cause the interpreter to abort ("Fatal Python error: Could not reset the stack!") instead of throwing a MemoryError.
Issue #3689: The list reversed iterator now supports __length_hint__ instead of __len__. Behavior now matches other reversed iterators.
Issue #4367: Python would segfault during compiling when the unicodedata module couldn't be imported and N escapes were present.
Issue #4233: Changed semantic of _fileio.FileIO's close() method on file objects with closefd=False. The file descriptor is still kept open but the file object behaves like a closed file. The FileIO object also got a new readonly attribute closefd.
Issue #4348: Some bytearray methods returned that didn't cause any change to the bytearray, returned the same bytearray instead of a copy.
Issue #4317: Fixed a crash in the imageop.rgb2rgb8() function.
Issue #4230: If __getattr__ is a descriptor, it now functions correctly.
Issue #4048: The parser module now correctly validates relative imports.
Issue #4225: from __future__ import unicode_literals didn't work in an exec statement.
Issue #4176: Fixed a crash when pickling an object which __reduce__ method does not return iterators for the 4th and 5th items.
Issue #4209: Enabling unicode_literals and the print_function in the same __future__ import didn't work.
Using nonlocal as a variable name will now raise a Py3k SyntaxWarning because it is a reserved word in 3.x.
On windows, os.chdir() given unicode was not working if GetCurrentDirectoryW returned a path longer than MAX_PATH. (But It's doubtful this code path is really executed because I cannot move to such directory on win2k)
Issue #4069: When set.remove(element) is used with a set element, the element is temporarily replaced with an equivalent frozenset. But the eventual KeyError would always report the empty frozenset() as the missing key. Now it correctly refers to the initial element.
Issue #4509: Various issues surrounding resize of bytearray objects to which there are buffer exports.
Issue #4748: Lambda generators no longer return a value.
Issue #3582: Use native TLS functions on Windows
The re.sub(), re.subn() and re.split() functions now accept a flags parameter.
Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with short file names.
Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)' to avoid compiler warnings.
Issue #5705: os.setuid() would not accept values > 2**31-1 but pwd.getpwnam() returned them on 64bit platforms.
Issue #5108: Handle %s like %S and %R in PyUnicode_FromFormatV(): Call PyUnicode_DecodeUTF8() once, remember the result and output it in a second step. This avoids problems with counting UTF-8 bytes that ignores the effect of using the replace error handler in PyUnicode_DecodeUTF8().
Issue #3739: The unicode-internal encoder now reports the number of characters consumed like any other encoder (instead of the number of bytes).
Issue #2422: When compiled with the --with-valgrind option, the pymalloc allocator will be automatically disabled when running under Valgrind. This gives improved memory leak detection when running under Valgrind, while taking advantage of pymalloc at other times.
Add count() and reverse() methods to collections.deque().
Fix variations of extending deques: d.extend(d) d.extendleft(d) d+=d
Issue #6986: Fix crash in the JSON C accelerator when called with the wrong parameter types. Patch by Victor Stinner.
logging: Added optional "secure" parameter to SMTPHandler, to enable use of TLS with authentication credentials.
Issue #1923: Fixed the removal of meaningful spaces when PKG-INFO is generated in Distutils. Patch by Stephen Emslie.
Issue #4120: Drop reference to CRT from manifest when building extensions with msvc9compiler.
Issue #7333: The posix module gains an initgroups() function providing access to the initgroups(3) C library call on Unix systems which implement it. Patch by Jean-Paul Calderone.
Issue #7408: Fixed distutils.tests.sdist so it doesn't check for group ownership when the group is not forced, because the group may be different from the user's group and inherit from its container when the test is run.
Issue #1515: Enable use of deepcopy() with instance methods. Patch by Robert Collins.
Issue #7403: logging: Fixed possible race condition in lock creation.
Issue #6845: Add restart support for binary upload in ftplib. The storbinary() method of FTP and FTP_TLS objects gains an optional "rest" argument. Patch by Pablo Mouzo.
Issue #5788: datetime.timedelta objects get a new total_seconds() method returning the total number of seconds in the duration. Patch by Brian Quinlan.
Issue #6615: logging: Used weakrefs in internal handler list.
Issue #1488943: difflib.Differ doesn't always add hints for tab characters.
Issue #6123: tarfile now opens empty archives correctly and consistently raises ReadError on empty files.
Issue #7354: distutils.tests.test_msvc9compiler - dragfullwindows can be 2.
Issue #5037: Proxy the __unicode__ special method to __unicode__ instead of __str__.
Issue #7341: Close the internal file object in the TarFile constructor in case of an error.
Issue #7293: distutils.test_msvc9compiler is fixed to work on any fresh Windows box. Help provided by David Bolen.
Issue #7328: pydoc no longer corrupts sys.path when run with the '-m' switch.
Issue #2054: ftplib now provides an FTP_TLS class to do secure FTP using TLS or SSL. Patch by Giampaolo Rodola'.
Issue #4969: The mimetypes module now reads the MIME database from the registry under Windows. Patch by Gabriel Genellina.
Issue #6816: runpy now provides a run_path function that allows Python code to execute file paths that refer to source or compiled Python files as well as zipfiles, directories and other valid sys.path entries that contain a __main__.py file. This allows applications that run other Python scripts to support the same flexibility as the CPython command line itself.
Issue #7318: multiprocessing now uses a timeout when it fails to establish a connection with another process, rather than looping endlessly. The default timeout is 20 seconds, which should be amply sufficient for local connections.
Issue #7197: Allow unittest.TextTestRunner objects to be pickled and unpickled. This fixes crashes under Windows when trying to run test_multiprocessing in verbose mode.
Issue #7282: Fix a memory leak when an RLock was used in a thread other than those started through threading.Thread (for example, using thread.start_new_thread().
Issue #7264: Fix a possible deadlock when deallocating thread-local objects which are part of a reference cycle.
Issue #7211: Allow 64-bit values for the ident and data fields of kevent objects on 64-bit systems. Patch by Michael Broghton.
Issue #6896: mailbox.Maildir now invalidates its internal cache each time a modification is done through it. This fixes inconsistencies and test failures on systems with slightly bogus mtime behaviour.
Issue #7246 & Issue #7208: getpass now properly flushes input before reading from stdin so that existing input does not confuse it and lead to incorrect entry or an IOError. It also properly flushes it afterwards to avoid the terminal echoing the input afterwards on OSes such as Solaris.
Issue #7233: Fix a number of two-argument Decimal methods to make sure that they accept an int or long as the second argument. Also fix buggy handling of large arguments (those with coefficient longer than the current precision) in shift and rotate.
Issue #4750: Store the basename of the original filename in the gzip FNAME header as required by RFC 1952.
Issue #1180: Added a new global option to ignore ~/.pydistutils.cfg in Distutils.
Issue #7218: Fix test_site for win32, the directory comparison was done with an uppercase.
Issue #7205: Fix a possible deadlock when using a BZ2File object from several threads at once.
Issue #7071: byte-compilation in Distutils is now done with respect to sys.dont_write_bytecode.
Issue #7066: archive_util.make_archive now restores the cwd if an error is raised. Initial patch by Ezio Melotti.
Issue #6218: io.StringIO and io.BytesIO instances are now picklable with protocol 2.
Issue #7077: logging: SysLogHandler now treats Unicode as per RFC 5424.
Issue #7099: Decimal.is_normal now returns True for numbers with exponent larger than emax.
Issue #5833: Fix extra space character in readline completion with the GNU readline library version 6.0.
Issue #7133: SSL objects now support the new buffer API.
Issue #7149: urllib fails on OSX in the proxy detection code.
Issue #7069: Make inspect.isabstract() return a boolean.
Add support to the ihooks module for relative imports.
Issue #6894: Fixed the issue urllib2 doesn't respect "no_proxy" environment.
Issue #7086: Added TCP support to SysLogHandler, and tidied up some anachronisms in the code which were a relic of 1.5.2 compatibility.
Issue #7082: When falling back to the MIME 'name' parameter, the correct place to look for it is the Content-Type header.
Issue #7048: Force Decimal.logb to round its result when that result is too large to fit in the current precision.
Issue #6516: Added owner/group support when creating tar archives in Distutils.
Issue #7031: Add TestCase.assert(Not)IsInstance() methods.
Issue #6790: Make it possible again to pass an array.array to httplib.HTTPConnection.send. Patch by Kirk McDonald.
Issue #6236, #6348: Fix various failures in the io module under AIX and other platforms, when using a non-gcc compiler. Patch by egreen.
Issue #6954: Fixed crash when using DISTUTILS_DEBUG flag in Distutils.
Issue #6851: Fix urllib.urlopen crash on secondairy threads on OSX 10.6
Issue #4606: Passing 'None' if ctypes argtype is set to POINTER(...) does now always result in NULL.
Issue #5042: ctypes Structure sub-subclass does now initialize correctly with base class positional arguments.
Issue #6938: Fix a TypeError in string formatting of a multiprocessing debug message.
Issue #6635: Fix profiler printing usage message.
Issue #6856: Add a filter keyword argument to TarFile.add().
Issue #6163: Fixed HP-UX runtime library dir options in distutils.unixcompiler. Initial patch by Sridhar Ratnakumar and Michael Haubenwallner.
Issue #6857: Default format() alignment should be '>' for Decimal instances.
Issue #6795: int(Decimal('nan')) now raises ValueError instead of returning NaN or raising InvalidContext. Also, fix infinite recursion in long(Decimal('nan')).
Issue #6850: Fix bug in Decimal._parse_format_specifier for formats with no type specifier.
Issue #4937: plat-mac/bundlebuilder refers to non-existing version.plist.
Issue #6838: Use a list to accumulate the value instead of repeatedly concatenating strings in httplib's HTTPResponse._read_chunked providing a significant speed increase when downloading large files servend with a Transfer-Encoding of 'chunked'.
Issue #5275: In Cookie's Cookie.load(), properly handle non-string arguments as documented.
Issue #2666: Handle BROWSER environment variable properly for unknown browser names in the webbrowser module.
Issue #6054: Do not normalize stored pathnames in tarfile.
Issue #6794: Fix Decimal.compare_total and Decimal.compare_total_mag: NaN payloads are now ordered by integer value rather than lexicographically.
Issue #6693: New functions in site.py to get user/global site packages paths.
The thread.lock type now supports weak references.
Issue #1356969: Add missing info methods in Tix.HList.
Issue #1522587: New constants and methods for the Tix.Grid widget.
Issue #1250469: Fix the return value of Tix.PanedWindow.panes.
Issue #1119673: Do not override Tkinter.Text methods when creating a ScrolledText.
Issue #6665: Fix fnmatch to properly match filenames with newlines in them.
Issue #1135: Add the XView and YView mix-ins to avoid duplicating the xview* and yview* methods.
Issue #6629: Fix a data corruption issue in the new io package, which could occur when writing to a BufferedRandom object (e.g. a file opened in "rb+" or "wb+" mode) after having buffered a certain amount of data for reading. This bug was not present in the pure Python implementation.
Issue #4660: If a multiprocessing.JoinableQueue.put() was preempted, it was possible to get a spurious 'task_done() called too many times' error.
Issue #1628205: Socket file objects returned by socket.socket.makefile() now properly handles EINTR within the read, readline, write & flush methods. The socket.sendall() method now properly handles interrupted system calls.
Issue #6595: The Decimal constructor now allows arbitrary Unicode decimal digits in input, as recommended by the standard. Previously it was restricted to accepting [0-9].
Issue #6511: ZipFile now raises BadZipfile (instead of an IOError) when opening an empty or very small file.
Issue #6553: Fixed a crash in cPickle.load(), when given a file-like object containing incomplete data.
Issue #6545: Removed assert statements in distutils.Extension, so the behavior is similar when used with -O.
unittest has been split up into a package. All old names should still work.
Issue #6431: Make Fraction type return NotImplemented when it doesn't know how to handle a comparison without loss of precision. Also add correct handling of infinities and nans for comparisons with float.
Issue #6415: Fixed warnings.warn segfault on bad formatted string.
Issue #6466: Now distutils.cygwinccompiler and distutils.emxccompiler uses the same refactored function to get gcc/ld/dllwrap versions numbers. It's distutils.util.get_compiler_versions(). Added deprecation warnings for the obsolete get_versions() functions.
Issue #6433: Fixed issues with multiprocessing.pool.map hanging on empty list.
Issue #6314: logging: Extra checks on the "level" argument in more places.
Issue #2622: Fixed an ImportError when importing email.messsage from a standalone application built with py2exe or py2app.
Issue #6455: Fixed test_build_ext under win32.
Issue #6377: Enabled the compiler option, and deprecate its usage as an attribute.
Issue #6413: Fixed the log level in distutils.dist for announce.
Issue #3392: The subprocess communicate() method no longer fails in select() when file descriptors are large; communicate() now uses poll() when possible.
Issue #6403: Fixed package path usage in build_ext.
Issues #5155, #5313, #5331: multiprocessing.Process._bootstrap was unconditionally calling "os.close(sys.stdin.fileno())" resulting in file descriptor errors.
Issue #6365: Distutils build_ext inplace mode was copying the compiled extension in a subdirectory if the extension name had dots.
Issue #6344: Fixed a crash of mmap.read() when passed a negative argument.
Issue #5230: pydoc would report no documentation found if a module generated a 'not found' import error when loaded; it now reports the import errors. Thanks to Lucas Prado Melo for initial fix and collaboration on the tests.
Issue #6314: logging.basicConfig() performs extra checks on the "level" argument.
Issue #6164: Added an AIX specific linker argument in Distutils unixcompiler. Original patch by Sridhar Ratnakumar.
Issue #6274: Fixed possible file descriptors leak in subprocess.py.
Issue #6189: Restored compatibility of subprocess.py with Python 2.2.
Issue #6287: Added the license field in Distutils documentation.
Issue #6286: Now Distutils upload command is based on urllib2 instead of httplib, allowing the usage of http_proxy.
Issue #6271: mmap tried to close invalid file handle (-1) for anonymous maps on Unix.
Issue #6215: All bug fixes and enhancements from the Python 3.1 io library (including the fast C implementation) have been backported to the standard io module.
Issue #6258: Support AMD64 in bdist_msi.
Issue #6252: Fixed bug in next rollover time computation in TimedRotatingFileHandler.
Issue #6263: Fixed syntax error in distutils.cygwincompiler.
Issue #5201: distutils.sysconfig.parse_makefile() now understands $$ in Makefiles. This prevents compile errors when using syntax like: LDFLAGS='-rpath=\$$LIB:/some/other/path'. Patch by Floris Bruynooghe.
Issue #5767: Removed sgmlop support from xmlrpclib.
Issue #6131: test_modulefinder leaked when run after test_distutils. Patch by Hirokazu Yamamoto.
Issue #6048: Now Distutils uses the tarfile module in archive_util.
Issue #5150: IDLE's format menu now has an option to strip trailing whitespace.
Issue #6121: pydoc now ignores leading and trailing spaces in the argument to the 'help' function.
In unittest, using a skipping decorator on a class is now equivalent to skipping every test on the class. The ClassTestSuite class has been removed.
Issue #6050: Don't fail extracting a directory from a zipfile if the directory already exists.
Issue #5311: bdist_msi can now build packages that do not depend on a specific Python version.
Issue #1309352: fcntl now converts its third arguments to a C long rather than an int, which makes some operations possible under 64-bit Linux (e.g. DN_MULTISHOT with F_NOTIFY).
Issue #1424152: Fix for httplib, urllib2 to support SSL while working through proxy. Original patch by Christopher Li, changes made by Senthil Kumaran.
Issue #1983: Fix functions taking or returning a process identifier to use the dedicated C type pid_t instead of a C int. Some platforms have a process identifier type wider than the standard C integer type.
Issue #4066: smtplib.SMTP_SSL._get_socket now correctly returns the socket. Patch by Farhan Ahmad, test by Marcin Bachry.
Issue #6062: In distutils, fixed the package option of build_ext. Feedback and tests on pywin32 by Tim Golden.
Issue #6053: Fixed distutils tests on win32. Patch by Hirokazu Yamamoto.
Issue #6046: Fixed the library extension when distutils build_ext is used in place. Initial patch by Roumen Petrov.
Issue #6041: Now distutils sdist and register commands use check as a subcommand.
Issue #2116: Weak references and weak dictionaries now support copy()ing and deepcopy()ing.
Issue #1655: Make imaplib IPv6-capable. Patch by Derek Morr.
Issue #5918: Fix a crash in the parser module.
Issue #1664: Make nntplib IPv6-capable. Patch by Derek Morr.
Issue #6022: A test file was created in the current working directory by test_get_outputs in Distutils.
Issue #4050: inspect.findsource/getsource now raise an IOError if the 'source' file is a binary. Patch by Brodie Rao, tests by Daniel Diniz.
Issue #5977: distutils build_ext.get_outputs was not taking into account the inplace option. Initial patch by kxroberto.
Issue #5984: distutils.command.build_ext.check_extensions_list checks were broken for old-style extensions.
Issue #5971: StreamHandler.handleError now swallows IOErrors which occur when trying to print a traceback.
Issue #5976: Fixed Distutils test_check_environ.
Issue #5900: Ensure RUNPATH is added to extension modules with RPATH if GNU ld is used. Original patch by Floris Bruynooghe.
Issue #5941: Distutils build_clib command was not working anymore because of an incomplete costumization of the archiver command. Added ARFLAGS in the Makefile besides AR and make Distutils use it. Original patch by David Cournapeau.
Issue #5955: aifc's close method did not close the file it wrapped, now it does. This also means getfp method now returns the real fp.
Issue #4875: On win32, ctypes.util.find_library does no longer return directories.
Issue #5142: Add the ability to skip modules while stepping to pdb.
Issue #1309567: Fix linecache behavior of stripping subdirectories when looking for files given by a relative filename.
Issue #5692: In zipfile.Zipfile, fix wrong path calculation when extracting a file to the root directory.
Issue #5913: os.listdir() should fail for empty path on windows.
Issue #5084: Unpickling now interns the attribute names of pickled objects, saving memory and avoiding growth in size of subsequent pickles. Proposal and original patch by Jake McGuire.
Issue #3002: shutil.copyfile() and shutil.copytree() now raise an error when a named pipe is encountered, rather than blocking infinitely.
Issue #3959: The ipaddr module has been added to the standard library. Contributed by Google.
Issue #2245: aifc now skips chunk types it doesn't recognize, per spec.
Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive anymore.
Issue #4305: ctypes should now build again on mipsel-linux-gnu
Issue #1734234: Massively speedup unicodedata.normalize() when the string is already in normalized form, by performing a quick check beforehand. Original patch by Rauli Ruohonen.
Issue #5853: Calling a function of the mimetypes module from several threads at once could hit the recursion limit if the mimetypes database hadn't been initialized before.
Issue #5854: Updated __all__ to include some missing names and remove some names which should not be exported.
Issue #5810: Fixed Distutils test_build_scripts so it uses sysconfig.get_config_vars().
Issue #4951: Fixed failure in test_httpservers.
Issue #3102: All global symbols that the _ctypes extension defines are now prefixed with 'Py' or '_ctypes'.
Issue #5041: ctypes does now allow pickling wide character.
Issue #5812: For the two-argument form of the Fraction constructor, Fraction(m, n), m and n are permitted to be arbitrary Rational instances.
Issue #5812: Fraction('1e6') is valid: more generally, any string that's valid for float() is now valid for Fraction(), with the exception of strings representing NaNs and infinities.
Issue #5795: Fixed test_distutils failure on Debian ppc.
Issue #5768: Fixed bug in Unicode output logic and test case for same.
Issue #1161031: Fix readwrite select flag handling: POLLPRI now results in a handle_expt_event call, not handle_read_event, and POLLERR and POLLNVAL now call handle_close, not handle_expt_event. Also, dispatcher now has an 'ignore_log_types' attribute for suppressing log messages, which is set to 'warning' by default.
Issue #5607: Fixed Distutils test_get_platform for Mac OS X fat binaries.
Issue #5741: Don't disallow "%%" (which is an escape for "%") when setting a value in SafeConfigParser.
Issue #5732: Added a new command in Distutils: check.
Issue #5731: Distutils bdist_wininst no longer worked on non-Windows platforms. Initial patch by Paul Moore.
Issue #2254: Fix CGIHTTPServer information disclosure. Relative paths are now collapsed within the url properly before looking in cgi_directories.
Issue #5095: Added bdist_msi to the list of bdist supported formats. Initial fix by Steven Bethard.
Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases. Initial fix by Wayne Davison.
Issue #5693: TestSuite.__iter__ can now be consistently overridden in subclasses.
Issue #5694: Removed spurious test output in Distutils (test_clean).
Issue #5471: Fix os.path.expanduser() for $HOME set to '/'.
Issue #1326077: Fix the formatting of SyntaxErrors by the traceback module.
Issue #1726172: Fix IndexError in the case of and empty response in ftplib.
Issue #2625: Added missing iteritems() call to the for loop in mailbox.MH.get_message().
Issue #5585: Add the ability to call an initializer to mulitiprocessing.manager so that users can install custom handlers/etc.
Issue #3551: Patch multiprocessing to raise a proper exception if the size of the object when writefile is called causes a ERROR_NO_SYSTEM_RESOURCES. Added docs to note the limitation.
unittest.assertNotEqual() now uses the inequality operator (!=) instead of the equality operator.
Issue #6001: Test discovery for unittest. Implemented in unittest.TestLoader.discover and from the command line.
Issue #5679: The methods unittest.TestCase.addCleanup and doCleanups were added. addCleanup allows you to add cleanup functions that will be called unconditionally (after setUp if setUp fails, otherwise after tearDown). This allows for much simpler resource allocation and deallocation during tests.
Issue #3379: unittest.main now takes an optional exit argument. If False main doesn't call sys.exit allowing it to be used from the interactive interpreter.
Issue #5995: unittest.main now takes an optional verbosity argument allowing test modules to be run with a higher than default verbosity.
Issue #5995: A fix to allow you to run "python -m unittest test_module" or "python -m unittest test_module.TestClass" from the command line.
Issue #5728: unittest.TestResult has new startTestRun and stopTestRun methods; called immediately before and after a test run.
Issue #5663: Better failure messages for unittest asserts. Default assertTrue and assertFalse messages are now useful. TestCase has a longMessage attribute. This defaults to False, but if set to True useful error messages are shown in addition to explicit messages passed to assert methods.
Issue #3110: Add additional protect around SEM_VALUE_MAX for multiprocessing.
In Pdb, prevent the reassignment of __builtin__._ by sys.displayhook on printing out values.
Issue #4572: Added SEEK_* symbolic constants to io module.
Issue #1665206 (partially): Move imports in cgitb to the top of the module instead of performing them in functions. Helps prevent import deadlocking in threads.
Issue #5647: MutableSet.__iand__() no longer mutates self during iteration.
Actually make the SimpleXMLRPCServer CGI handler work.
Issue #2522: locale.format() now checks its first argument to ensure it has been passed only one pattern, avoiding mysterious errors where it appeared that it was failing to do localization.
Issue #5583: Added optional extensions in Distutils. Initial patch by Georg Brandl.
Issue #5619: Multiprocessing children disobey the debug flag and causes popups on windows buildbots. Patch applied to work around this issue.
Issue #5632: Thread.ident was None for the main thread and threads not created with the threading module.
Issue #5400: Added patch for multiprocessing on netbsd compilation/support.
Issue #5387: Fixed mmap.move crash by integer overflow.
Issue #5261: Patch multiprocessing's semaphore.c to support context manager use: "with multiprocessing.Lock()" works now.
Issue #5177: Multiprocessing's SocketListener class now uses socket.SO_REUSEADDR on all connections so that the user no longer needs to wait 120 seconds for the socket to expire.
Adjusted _tkinter to compile without warnings when WITH_THREAD is not defined (part of issue #5035).
Issue #5561: Removed the sys.version_info shortcuts from platform's python_version() and python_version_tuple() since they produced different output compared to previous Python versions.
Issue #1034053: unittest now supports skipping tests and expected failures.
The unittest.TestCase.assertRaises() method now returns a context manager when not given a callable so that code to be tested can be written inline using a with statement.
Issue #2578: The unittest.TestCase.assertEqual() now displays the differences in lists, tuples, dicts and sets on failure. Many new handy type and comparison specific assert* methods have been added that fail with error messages actually useful for debugging. Contributed in part by Google.
Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop forever on incomplete input. That caused tarfile.open() to hang when used with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or partial bzip2 compressed data.
Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to even if an exception occurs.
Issue #5381: Added object_pairs_hook to the json module. This allows OrderedDicts to be built by the decoder.
Issue #2110: Add support for thousands separator and 'n' type specifier to Decimal.__format__().
Fix Decimal.__format__ bug that swapped the meanings of the '<' and '>' alignment characters.
Issue #1222: locale.format() bug when the thousands separator is a space character.
Issue #5472: Fixed distutils.test_util tear down. Original patch by Tim Golden.
collections.deque objects now have a read-only attribute called maxlen.
Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after it is has been populated and properly configured in order to prevent window flashing.
Issue #4792: Prevent a segfault in _tkinter by using the guaranteed to be safe interp argument given to the PythonCmd in place of the Tcl interpreter taken from a PythonCmd_ClientData.
Issue #5193: Guarantee that Tkinter.Text.search returns a string.
Issue #5394: Removed > 2.3 syntax from distutils.msvc9compiler. Original patch by Akira Kitada.
Issue #5385: Fixed mmap crash after resize failure on windows.
Issue #5179: Fixed subprocess handle leak on failure on windows.
PEP 372: Added collections.OrderedDict().
The _asdict() for method for namedtuples now returns an OrderedDict().
The configparser module now defaults to using an ordered dictionary.
Issue #4308: httplib.IncompleteRead's repr doesn't include all of the data all ready received.
Issue #5401: Fixed a performance problem in mimetypes when from mimetypes import guess_extension was used.
Issue #1733986: Fixed mmap crash on Windows in accessing elements of second map object with same tagname but larger size than first map.
Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer overrun.
Issue #1533164: Installed but not listed *.pyo was breaking Distutils bdist_rpm command.
Issue #5378: Added --quiet option to Distutils bdist_rpm command.
Issue #5052: Make Distutils compatible with 2.3 again.
Deprecated methods of symtable.Symbol have been removed: is_keywordarg(), is_vararg(), and is_in_tuple().
Issue #5316: Fixed buildbot failures introduced by multiple inheritance in Distutils tests.
Issue #5287: Add exception handling around findCaller() call to help out IronPython.
Issue #5282: Fixed mmap resize on 32bit Windows and Unix. When offset > 0, the file was resized to wrong size.
Issue #5292: Fixed mmap crash on its boundary access m[len(m)].
Issue #2279: distutils.sdist.add_defaults now add files from the package_data and the data_files metadata.
Issue #5257: Refactored all tests in distutils, so they use support.TempdirManager, to avoid writing in the tests directory.
Issue #4524: distutils build_script command failed with --with-suffix=3. Initial patch by Amaury Forgeot d'Arc.
Issue #2461: Added tests for distutils.util.
Issue #1008086: Fixed socket.inet_aton() to always return 4 bytes even on LP64 platforms (most 64-bit Linux, bsd, unix systems).
Issue #5203: Fixed ctypes segfaults when passing a unicode string to a function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false).
Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored under NT and OS2. Patch by Philip Jenvey.
Issue #5128: Make compileall properly inspect bytecode to determine if needs to be recreated. This avoids a timing hole thanks to the old reliance on the ctime of the files involved.
Issue #5122: Synchronize tk load failure check to prevent a potential deadlock.
Issue #1818: collections.namedtuple() now supports a keyword argument 'rename' which lets invalid fieldnames be automatically converted to positional names in the form, _1, _2, ...
Issue #4890: Handle empty text search pattern in Tkinter.Text.search.
Issue #5170: Fixed Unicode output bug in logging and added test case. This is a regression which did not occur in 2.5.
Issue #4512 (part 2): Promote ZipImporter._get_filename() to be a public documented method ZipImporter.get_filename().
Issue #4195: The runpy module (and the -m switch) now support the execution of packages by looking for and executing a __main__ submodule when a package name is supplied. Initial patch by Andi Vajda.
Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in Tkapp_Call when calling from a thread different than the one that created the Tcl interpreter. Patch by Robert Hancock.
Issue #1520877: Now distutils.sysconfig reads $AR from the environment/Makefile. Patch by Douglas Greiman.
Issue #4285: Change sys.version_info to be a named tuple. Patch by Ross Light.
Issue #1276768: The verbose option was not used in the code of distutils.file_util and distutils.dir_util.
Issue #5132: Fixed trouble building extensions under Solaris with --enabled-shared activated. Initial patch by Dave Peterson.
Issue #1581476: Always use the Tcl global namespace when calling into Tcl.
Issue #2047: shutil.move() could believe that its destination path was inside its source path if it began with the same letters (e.g. "src" vs. "src.new").
Issue #4920: Fixed .next() vs .__next__() issues in the ABCs for Iterator and MutableSet.
Added the ttk module. See issue #2983: Ttk support for Tkinter.
Issue #5021: doctest.testfile() did not create __name__ and collections.namedtuple() relied on __name__ being defined.
Backport importlib from Python 3.1. Only the import_module() function has been backported to help facilitate transitions from 2.7 to 3.1.
Issue #1885: distutils: When running sdist with --formats=tar,gztar the tar file was overriden by the gztar one.
Issue #4863: distutils.mwerkscompiler has been removed.
Added new itertools functions: combinations_with_replacement() and compress().
Issue #5032: Added a step argument to itertools.count() and allowed non-integer arguments.
Fix and properly document the multiprocessing module's logging support, expose the internal levels and provide proper usage examples.
Issue #1672332: Fix unpickling of subnormal floats, which was producing a ValueError on some platforms.
Issue #3881: Help Tcl to load even when started through the unreadable local symlink to "Program Files" on Vista.
Issue #4710: Extract directories properly in the zipfile module; allow adding directories to a zipfile.
Issue #3807: _multiprocessing build fails when configure is passed --without-threads argument. When this occurs, _multiprocessing will be disabled, and not compiled.
Issue #5008: When a file is opened in append mode with the new IO library, do an explicit seek to the end of file (so that e.g. tell() returns the file size rather than 0). This is consistent with the behaviour of the traditional 2.x file object.
Issue #5013: Fixed a bug in FileHandler which occurred when the delay parameter was set.
Issue #4998: The memory saving effect of __slots__ had been lost on Fractions which inherited from numbers.py which did not have __slots__ defined. The numbers hierarchy now has its own __slots__ declarations.
Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks for *nix machines for negative handles and large int handles. Without this check it is possible to segfault the interpreter.
Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue in sharedctypes.py.
Issue #1225107: inspect.isclass() returned True for instances with a custom __getattr__.
Issue #3997: Zipfiles generated with more than 65536 files could not be opened with other applications.
Issue #1162154: inspect.getmembers() now skips attributes that raise AttributeError, e.g. a __slots__ attribute which has not been set.
Issue #1696199: Add collections.Counter() for rapid and convenient counting.
Issue #3860: GzipFile and BZ2File now support the context manager protocol.
Issue #4272: Add an optional argument to the GzipFile constructor to override the timestamp in the gzip stream. The default value remains the current time. The information can be used by e.g. gunzip when decompressing. Patch by Jacques Frechet.
Restore Python 2.3 compatibility for decimal.py.
Issue #1702551: distutils sdist was not excluding VCS directories under Windows. Inital solution by Guy Dalberto.
The _tkinter module functions "createfilehandler", "deletefilehandler", "createtimerhandler", "mainloop", "dooneevent" and "quit" have been deprecated for removal in 3.x
Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float() to the decimal module.
Issue #4812: Add missing underscore prefix to some internal-use-only constants in the decimal module. (Dec_0 becomes _Dec_0, etc.)
Issue #4795: inspect.isgeneratorfunction() returns False instead of None when the function is not a generator.
Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case no MSVC compiler is found under Windows. Original patch by Philip Jenvey.
Issue #4646: distutils was choking on empty options arg in the setup function. Original patch by Thomas Heller.
Fractions.from_float() no longer loses precision for integers too big to cast as floats.
Issue #4790: The nsmallest() and nlargest() functions in the heapq module did unnecessary work in the common case where no key function was specified.
Issue #3767: Convert Tk object to string in tkColorChooser.
Issue #3248: Allow placing ScrolledText in a PanedWindow.
Issue #4444: Allow assertRaises() to be used as a context handler, so that the code under test can be written inline if more practical.
Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@') works as expected in the interactive environment.
Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by Gabriel Genellina.
Issue #4400: .pypirc default generated file was broken in distutils.
Issue #4736: io.BufferedRWPair's closed property now functions properly.
Issue #3954: Fix a potential SystemError in _hotshot.logreader error handling.
Issue #4574: Fix a crash in io.IncrementalNewlineDecoder when a carriage return encodes to more than one byte in the source encoding (e.g. UTF-16) and gets split on a chunk boundary.
Issue #4223: inspect.getsource() will now correctly display source code for packages loaded via zipimport (or any other conformant PEP 302 loader). Original patch by Alexander Belopolsky.
Issue #4201: pdb can now access and display source code loaded via zipimport (or any other conformant PEP 302 loader). Original patch by Alexander Belopolsky.
Issue #4197: Doctests in modules loaded via zipimport (or any other PEP 302 conformant loader) will now work correctly in most cases (they are still subject to the constraints that exist for all code running from inside a module loaded via a PEP 302 loader and attempting to perform IO operations based on __file__). Original patch by Alexander Belopolsky.
Issues #4082 and #4512: Add runpy support to zipimport in a manner that allows backporting to maintenance branches. Original patch by Alexander Belopolsky.
Issue #4163: Use unicode-friendly word splitting in the textwrap functions when given an unicode string.
Issue #4616: TarFile.utime(): Restore directory times on Windows.
Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to give correct results in the case where one argument is a quiet NaN and the other is a finite number that requires rounding.
Issue #1030250: Distutils created directories even when run with the --dry-run option.
Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat libs.
Issue #4529: Fix the parser module's validation of try-except-finally statements.
Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument, not a malformed option.
Added the subprocess.check_output() convenience function to get output from a subprocess on success or raise an exception on error.
Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to support unusual filenames (such as those containing semi-colons) in Content-Disposition headers.
Issue #4384: Added logging integration with warnings module using captureWarnings(). This change includes a NullHandler which does nothing; it will be of use to library developers who want to avoid the "No handlers could be found for logger XXX" message which can appear if the library user doesn't configure logging.
Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an exception.
Issue #4363: The uuid.uuid1() and uuid.uuid4() functions now work even if the ctypes module is not present.
FileIO's mode attribute now always includes "b".
Issue #4116: Resolve member name conflict in ScrolledCanvas.__init__.
httplib.HTTPConnection.putheader() now accepts an arbitrary number of values for any header, matching what the documentation has claimed for a while.
Issue #3774: Fixed an error when create a Tkinter menu item without command and then remove it.
Fixed a modulefinder crash on certain relative imports.
Issue #4150: Pdb's "up" command now works for generator frames in post-mortem debugging.
Issue #4092: Return ArgInfo as promised in the documentation from inspect.getargvalues.
Issue #3935: Properly support list subclasses in bisect's C implementation.
Issue #4014: Don't claim that Python has an Alpha release status, in addition to claiming it is Mature.
Issue #4730: Fixed the cPickle module to handle correctly astral characters when protocol 0 is used.
Issue #1594: MacOS.GetCreatorAndType now always returns a big-endian result, to be consistent with Apple tools.
Issue #900949: plat-mac/videoreader.py no longer relies on a non-existing module.
Issue #16278952: plat-mac/videoreader.py now correctly imports MediaDescr
Issue #1737832: plat-mac/EasyDialog.py no longer uses the broken aepack module.
Issue #1149804: macostools.mkdirs now even works when another process creates one of the needed subdirectories.
Issue #900506: added --no-zipimport flag to the bundlebuilder script.
Issue #841800: bundlebuilder now works with 'python -O'.
Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
Issue #5104: The socket module now raises OverflowError when 16-bit port and protocol numbers are supplied outside the allowed 0-65536 range on bind() and getservbyport().
Issue #999042: The Python compiler now handles explict global statements correctly (should be assigned using STORE_GLOBAL opcode).
Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for new arguments introduced in 2.5.
Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in makeunicodedata.py and regenerated the Unicode database (This fixes u'u1d79'.lower() == 'x00').
Windows locale mapping updated to Vista.
Issue #6508: Add posix.{getresuid,getresgid,setresuid,setresgid}.
Issue #7078: Set struct.__doc__ from _struct.__doc__.
Issue #3366: Add erf, erfc, expm1, gamma, lgamma functions to math module.
Issue #6823: Allow time.strftime() to accept a tuple with a isdst field outside of the range of [-1, 1] by normalizing the value to within that range.
Issue #6877: Make it possible to link the readline extension to libedit on OSX.
Issue #6944: Fix a SystemError when socket.getnameinfo() was called with something other than a tuple as first argument.
Issue #6865: Fix reference counting issue in the initialization of the pwd module.
Issue #6848: Fix curses module build failure on OS X 10.6.
Fix a segfault in expat when given a specially crafted input lead to the tokenizer not stopping. CVE-2009-3720.
Issue #6561: 'd' in a regex now matches only characters with Unicode category 'Nd' (Number, Decimal Digit). Previously it also matched characters with category 'No'.
Issue #1523: Remove deprecated overflow wrapping for struct.pack with an integer format code ('bBhHiIlLqQ'). Packing an out-of-range integer now consistently raises struct.error.
Issues #1530559, #1741130: Fix various struct.pack inconsistencies for the integer formats ('bBhHiIlLqQ'). In the following, '*' represents any of '=', '<', '>'.
Packing a float now always gives a Deprecation Warning. Previously it only warned for 'I', 'L', '*B', '*H', '*I', '*L'.
If x is not an int, long or float, then packing x will always result in struct.error. Previously an x with an __int__ method could be packed by 'b', 'B', 'h', 'H', 'i', 'l', '*b', '*h' ,'*i', '*l', and an x with a __long__ method could be packed by 'q', 'Q', '*q', '*Q'; for x with neither __int__ nor __long__, TypeError used to be raised (with a confusing error message) for 'I', 'L', '*B', '*H', '*I', '*L', and struct.error in other cases.
Note: as of Python 2.7 beta 1, the above is out of date. In 2.7 beta 1, any argument with an __int__ method can be packed, but use of this feature triggers a DeprecationWarning.
Issue #4873: Fix resource leaks in error cases of pwd and grp.
Issue #4751: For hashlib algorithms provided by OpenSSL, the Python GIL is now released during computation on data lengths >= 2048 bytes.
Issue #3745: Fix hashlib to always reject unicode and non buffer-api supporting objects as input no matter how it was compiled (built in implementations or external openssl library). NOTE: Undone in 2.7a2.
Issue #4397: Fix occasional test_socket failure on OS X.
Issue #4279: Fix build of parsermodule under Cygwin.
Issue #4051: Prevent conflict of UNICODE macros in cPickle.
Issue #4228: Pack negative values the same way as 2.4 in struct's L format.
Issue #1040026: Fix os.times result on systems where HZ is incorrect.
Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris, OpenBSD.
Issue #4365: Add crtassem.h constants to the msvcrt module.
Issue #4396: The parser module now correctly validates the with statement.
Issue #5228: Make functools.partial objects can now be pickled.
Release date: 01-Oct-2008
Release date: 17-Sep-2008
Release date: 12-Sep-2008
Release date: 20-Aug-2008
Release date: 17-Jul-2008
Release date: 18-June-2008
The Windows installer now includes Tk 8.5, bzip2 1.0.5, and SQLite 3.5.9.
Patch #1722225: Support QNX 6.
Lib/lib-old is now added to sys.path.
On MacOS X it is now possible to install the framework in 64-bit mode or even as a 4-way universal binary (that is, PPC, i386, PPC64 and x86_64 support in one binary).
This is controlled by the configure argument --with-universal-archs:
This option should be used in combination with --enable-universalsdk=.
NOTE: 64-bit and 4-way builds are only suppported on Mac OS X 10.5 (or later).
Release date: 08-May-2008
Issue #2550: The approach used by client/server code for obtaining ports to listen on in network-oriented tests has been refined in an effort to facilitate running multiple instances of the entire regression test suite in parallel without issue. test_support.bind_port() has been fixed such that it will always return a unique port -- which wasn't always the case with the previous implementation, especially if socket options had been set that affected address reuse (i.e. SO_REUSEADDR, SO_REUSEPORT). The new implementation of bind_port() will actually raise an exception if it is passed an AF_INET/SOCK_STREAM socket with either the SO_REUSEADDR or SO_REUSEPORT socket option set. Furthermore, if available, bind_port() will set the SO_EXCLUSIVEADDRUSE option on the socket it's been passed. This currently only applies to Windows. This option prevents any other sockets from binding to the host/port we've bound to, thus removing the possibility of the 'non-deterministic' behaviour, as Microsoft puts it, that occurs when a second SOCK_STREAM socket binds and accepts to a host/port that's already been bound by another socket. The optional preferred port parameter to bind_port() has been removed. Under no circumstances should tests be hard coding ports!
test_support.find_unused_port() has also been introduced, which will pass a temporary socket object to bind_port() in order to obtain an unused port. The temporary socket object is then closed and deleted, and the port is returned. This method should only be used for obtaining an unused port in order to pass to an external program (i.e. the -accept [port] argument to openssl's s_server mode) or as a parameter to a server-oriented class that doesn't give you direct access to the underlying socket used.
Finally, test_support.HOST has been introduced, which should be used for the host argument of any relevant socket calls (i.e. bind and connect).
test_socket, test_smtplib, test_asyncore, test_ssl, test_httplib, test_poplib, test_ftplib, test_telnetlib, test_socketserver, test_asynchat and test_socket_ssl.
It is now possible for multiple instances of the regression test suite to run in parallel without issue.
Release date: 02-Apr-2008
Issue #1733757: The interpreter would hang on shutdown if the tracing function set by sys.settrace is still active and happens to call threading.currentThread().
Patch #1442: properly report exceptions when the PYTHONSTARTUP file cannot be executed.
The compilation of a class nested in another class used to leak one reference on the outer class name.
Patch #1810: compile() can now compile _ast trees as returned by compile(..., PyCF_ONLY_AST).
Patch #2426: Added sqlite3.Connection.iterdump method to allow easy dumping of databases. Contributed by Paul Kippes at PyCon 2008.
Patch #2477: Added from __future__ import unicode_literals.
Added backport of bytearray type.
Issue #2355: add Py3k warning for buffer().
Issue #1477: With narrow Unicode builds, the unicode escape sequence Uxxxxxxxx did not accept values outside the Basic Multilingual Plane. This affected raw unicode literals and the 'raw-unicode-escape' codec. Now UTF-16 surrogates are generated in this case, like normal unicode literals and the 'unicode-escape' codec.
Issue #2348: add Py3k warning for file.softspace.
Issue #2346/#2347: add Py3k warnings for __methods__ and __members__.
Issue #2358: Add a Py3k warning on sys.exc_clear() usage.
Issue #2400: Allow relative imports to "import *".
Issue #1745: Backport print function with from __future__ import print_function.
Issue #2332: add new attribute names for instance method objects. The two changes are: im_self -> __self__ and im_func -> __func__
Issue #2379: Raise a Py3K warning for __getitem__ or __getslice__ on exception instances.
Issue #2371: Add a Py3k warning when catching an exception that doesn't derive from BaseException.
Issue #2341: Add a Py3k warning when raising an exception that doesn't derive from BaseException.
Issue #2321: use pymalloc for unicode object string data to reduce memory usage in some circumstances.
PEP 3127: octal literals now start with "0o". Old-style octal literals are still valid. There are binary literals with a prefix of "0b". This also affects int(x, 0).
Issue #2359: Adding deprecation warnings for array.{read,write}.
Issue #1779871: GNU gcc can now build Python on OS X because the flags -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd are no longer passed.
Add a warning when asserting a non-empty tuple which is always true.
Issue #2179: speed up with statement execution by storing the exit method on the stack instead of in a temporary variable (patch by Jeffrey Yaskin)
Issue #2238: Some syntax errors in *args and **kwargs expressions could give bogus error messages.
Issue #2143: Fix embedded readline() hang on SSL socket EOF.
Release date: 29-Feb-2008
Issue #2051: pyc and pyo files are no longer created with permission 644. The mode is now inherited from the py file.
Issue #2067: file.__exit__() now calls subclasses' close() method.
Patch #1759: Backport of PEP 3129 class decorators.
Issue #1881: An internal parser limit has been increased. Also see issue #215555 for a discussion.
Added the future_builtins module, which contains hex() and oct(). These are the PEP 3127 version of these functions, designed to be compatible with the hex() and oct() builtins from Python 3.0. They differ slightly in their output formats from the existing, unchanged Python 2.6 builtins. The expected usage of the future_builtins module is:
from future_builtins import hex, oct
Issue #1600: Modifed PyOS_ascii_formatd to use at most 2 digit exponents for exponents with absolute value < 100. Follows C99 standard. This is a change on Windows, which would use 3 digits. Also, added 'n' to the formats that PyOS_ascii_formatd understands, so that any alterations it does to the resulting string will be available in stringlib/formatter.h (for float.__format__).
Implemented PEP 3101, Advanced String Formatting. This adds a new builtin format(); a format() method for str and unicode; a __format__() method to object, str, unicode, int, long, float, and datetime; the class string.Formatter; and the C API PyObject_Format().
Fixed several potential crashes, all caused by specially crafted __del__ methods exploiting objects in temporarily inconsistent state.
Issue #2115: Important speedup in setting __slot__ attributes. Also prevent a possible crash: an Abstract Base Class would try to access a slot on a registered virtual subclass.
Fixed repr() and str() of complex numbers with infinity or nan as real or imaginary part.
Clear all free lists during a gc.collect() of the highest generation in order to allow pymalloc to free more arenas. Python may give back memory to the OS earlier.
Issue #2045: Fix an infinite recursion triggered when printing a subclass of collections.defaultdict, if its default_factory is set to a bound method.
Fixed a minor memory leak in dictobject.c. The content of the free list was not freed on interpreter shutdown.
Limit free list of method and built-in function objects to 256 entries each.
Patch #1953: Added sys._compact_freelists() and the C API functions PyInt_CompactFreeList and PyFloat_CompactFreeList to compact the internal free lists of pre-allocted ints and floats.
Issue #1983: Fixed return type of fork(), fork1() and forkpty() calls. Python expected the return type int but the fork familie returns pi_t.
Issue #1678380: Fix a bug that identifies 0j and -0j when they appear in the same code unit.
Issue #2025: Add tuple.count() and tuple.index() methods to comply with the collections.Sequence API.
Patch #1970 by Antoine Pitrou: Speedup unicode whitespace and linebreak detection
Added PyType_ClearCache() and sys._clear_type_cache to clear the internal lookup cache for ref leak tests.
Patch #1473257: generator objects gain a gi_code attribute. This is the same object as the func_code attribute of the function that produced the generator.
Issue #1920: "while 0" statements were completely removed by the compiler, even in the presence of an "else" clause, which is supposed to be run when the condition is false. Now the compiler correctly emits bytecode for the "else" suite.
A few crashers fixed: weakref_in_del.py (issue #1377858); loosing_dict_ref.py (issue #1303614, test67.py); borrowed_ref_[34].py (not in tracker).
Issue #1069410: The "can't load dll" message box on Windows is suppressed while an extension is loaded by calling SetErrorMode in dynload_win.c. The error is still reported properly.
Issue #1915: Python compiles with --enable-unicode=no again. However several extension methods and modules do not work without unicode support.
Issue #1882: when compiling code from a string, encoding cookies in the second line of code were not always recognized correctly.
Issue #1679: "0x" was taken as a valid integer literal.
Issue #1865: bytes as an alias for str and b"" as an alias "" were added.
sys.float_info / PyFloat_GetInfo: The floating point information object was converted from a dict to a specialized structseq object.
Patch #1816: Added sys.flags structseq. It exposes the status of most command line arguments and PYTHON* environment variables.
Objects/structseq.c: Implemented new structseq representation. The patch makes structseqs (e.g. the return value of os.stat) more readable.
Patch #1700288: added a type attribute cache that caches method accesses, resulting in speedups in heavily object-oriented code.
Bug #1776: __import__() no longer accepts filenames on any platform. The first parameter to __import__() must be a valid module name.
Patch #1668: renamed THREADDEBUG envvar to PYTHONTHREADDEBUG.
Patch #602345: Add -B command line option, PYTHONDONTWRITEBYTECODE envvar and sys.dont_write_bytecode attribute. All these can be set to forbid Python to attempt to write compiled bytecode files.
Improve some exception messages when Windows fails to load an extension module. Now we get for example '%1 is not a valid Win32 application' instead of 'error code 193'.
Bug #1481296: Fixed long(float('nan')) != 0L.
Issue #1640: Added math.isinf(x), math.isnan(x) and math.copysign(x, y) functions.
Issue #1635: Platform independent creation and representation of NaN and INF. float("nan"), float("inf") and float("-inf") now work on every platform with IEEE 754 semantics.
Compiler now generates simpler and faster code for dictionary literals. The oparg for BUILD_MAP now indicates an estimated dictionary size. There is a new opcode, STORE_MAP, for adding entries to the dictionary.
Issue #1638: %zd configure test fails on Linux.
Issue #1620: New property decorator syntax was modifying the decorator in place instead of creating a new decorator object.
Issue #1538: Avoid copying string in split/rsplit if the split char is not found.
Issue #1553: An erroneous __length_hint__ can make list() raise a SystemError.
PEP 366: Allow explicit relative imports when executing modules inside packages with the -m switch via a new module level __package__ attribute.
Issue #1402: Fix a crash on exit, when another thread is still running, and if the deallocation of its frames somehow calls the PyGILState_Ensure() / PyGILState_Release() functions.
Expose the Py_Py3kWarningFlag as sys.py3kwarning.
Issue #1445: Fix a SystemError when accessing the cell_contents attribute of an empty cell object.
Issue #1460: The utf-7 incremental decoder did not accept truncated input. It now correctly saves its state between chunks of data.
Patch #1739468: Directories and zipfiles containing a __main__.py file can now be directly executed by passing their name to the interpreter. The directory/zipfile is automatically inserted as the first entry in sys.path.
Issue #1265: Fix a problem with sys.settrace, if the tracing function uses a generator expression when at the same time the executed code is closing a paused generator.
sets and frozensets now have an isdisjoint() method.
optimize the performance of builtin.sum().
Fix warnings found by the new version of the Coverity checker.
The enumerate() built-in function is no longer bounded to sequences smaller than LONG_MAX. Formerly, it raised an OverflowError. Now, automatically shifts from ints to longs.
Issue #1686386: Tuple's tp_repr did not take into account the possibility of having a self-referential tuple, which is possible from C code. Nor did object's tp_str consider that a type's tp_str could do something that could lead to an inifinite recursion. Py_ReprEnter() and Py_EnterRecursiveCall(), respectively, fixed the issues.
Issue #1164: It was possible to trigger deadlock when using the 'print' statement to write to a file since the GIL was not released as needed. Now PyObject_Print() does the right thing along with various tp_print implementations of the built-in types and those in the collections module.
Issue #1147: Exceptions were directly allowing string exceptions in their throw() method even though string exceptions no longer allowed.
Issue #1096: Prevent a segfault from getting the repr of a very deeply nested list by using the recursion counter.
Issue #1202533: Fix infinite recursion calls triggered by calls to PyObject_Call() never calling back out to Python code to trigger recursion depth updates/checks. Required the creation of a static RuntimeError instance in case normalizing an exception put the recursion check value past its limit. Fixes crashers infinite_rec_(1|2|4|5).py.
Patch #1031213: Decode source line in SyntaxErrors back to its original source encoding.
Patch #1673759: add a missing overflow check when formatting floats with %G.
Prevent expandtabs() on string and unicode objects from causing a segfault when a large width is passed on 32-bit platforms.
Issue #1733488: Fix compilation of bufferobject.c on AIX.
Issue #1722485: remove docstrings again when running with -OO.
Add new attribute names for function objects. All the func_* become __*__ attributes. (Some already existed, e.g., __doc__ and __name__.)
Add -3 option to the interpreter to warn about features that are deprecated and will be changed/removed in Python 3.0.
Patch #1686487: you can now pass any mapping after '**' in function calls.
except clauses may now be spelled either "except E, target:" or "except E as target:". This is to provide forwards compatibility with Python 3.0.
Deprecate BaseException.message as per PEP 352.
Issue #1303614: don't expose object's __dict__ when the dict is inherited from a built-in base.
When __slots__ are set to a unicode string, make it work the same as setting a plain string, ie don't expand to single letter identifiers.
Request #1191699: Slices can now be pickled.
Request #1193128: str.translate() now allows a None argument for translations that only remove characters without re-mapping the remaining characters.
Patch #1682205: a TypeError while unpacking an iterable is no longer masked by a generic one with the message "unpack non-sequence".
Remove unused file Python/fmod.c.
Bug #1683368: The object.__init__() and object.__new__() methods are now stricter in rejecting excess arguments. The only time when either allows excess arguments is when it is not overridden and the other one is. For backwards compatibility, when both are overridden, it is a deprecation warning (for now; maybe a Py3k warning later). Also, type.__init__() insists on the same signature as supported by type.__new__().
Patch #1675423: PyComplex_AsCComplex() now tries to convert an object to complex using its __complex__() method before falling back to the __float__() method. Therefore, the functions in the cmath module now can operate on objects that define a __complex__() method.
Patch #1623563: allow __class__ assignment for classes with __slots__. The old and the new class are still required to have the same slot names.
Patch #1642547: Fix an error/crash when encountering syntax errors in complex if statements.
Patch #1462488: Python no longer segfaults when object.__reduce_ex__() is called with an object that is faking its type.
Patch #1680015: Don't modify __slots__ tuple if it contains an unicode name.
Patch #1444529: the builtin compile() now accepts keyword arguments.
Bug #1678647: write a newline after printing an exception in any case, even when converting the value to a string failed.
The dir() function has been extended to call the __dir__() method on its argument, if it exists. If not, it will work like before. This allows customizing the output of dir() in the presence of a __getattr__().
Patch #922167: Python no longer segfaults when faced with infinitely self-recursive reload() calls (as reported by bug #742342).
Patch #1675981: remove unreachable code from type.__new__() method.
Patch #1491866: change the complex() constructor to allow parthensized forms. This means complex(repr(x)) now works instead of raising a ValueError.
Patch #703779: unset __file__ in __main__ after running a file. This makes the filenames the warning module prints much more sensible when a PYTHONSTARTUP file is used.
Variant of patch #697613: don't exit the interpreter on a SystemExit exception if the -i command line option or PYTHONINSPECT environment variable is given, but break into the interactive interpreter just like on other exceptions or normal program exit.
Patch #1638879: don't accept strings with embedded NUL bytes in long().
Bug #1674503: close the file opened by execfile() in an error condition.
Patch #1674228: when assigning a slice (old-style), check for the sq_ass_slice instead of the sq_slice slot.
When printing an unraisable error, don't print exceptions. before the name. This duplicates the behavior whening normally printing exceptions.
Bug #1653736: Properly discard third argument to slot_nb_inplace_power.
PEP 352: Raising a string exception now triggers a TypeError. Attempting to catch a string exception raises DeprecationWarning.
Bug #1377858: Fix the segfaulting of the interpreter when an object created a weakref on itself during a __del__ call for new-style classes (classic classes still have the bug).
Bug #1579370: Make PyTraceBack_Here use the current thread, not the frame's thread state.
patch #1630975: Fix crash when replacing sys.stdout in sitecustomize.py.
Prevent seg fault on shutdown which could occur if an object raised a warning.
Bug #1566280: Explicitly invoke threading._shutdown from Py_Main, to avoid relying on atexit.
Bug #1590891: random.randrange don't return correct value for big number.
Patch #1586791: Better exception messages for some operations on strings, tuples and lists.
Bug #1067760: Deprecate passing floats to file.seek.
Bug #1591996: Correctly forward exception in instance_contains().
Bug #1588287: fix invalid assertion for 1,2 in debug builds.
Bug #1576657: when setting a KeyError for a tuple key, make sure that the tuple isn't used as the "exception arguments tuple".
Bug #1565514: SystemError not raised on too many nested blocks.
Bug #1576174: WindowsError now displays the windows error code again, no longer the posix error code.
Patch #1549049: Support long values in structmember, issue warnings if the assigned value for structmember fields gets truncated.
Update the peephole optimizer to remove more dead code (jumps after returns) and inline unconditional jumps to returns.
Bug #1545497: when given an explicit base, int() did ignore NULs embedded in the string to convert.
Bug #1569998: break inside a try statement (outside a loop) is now recognized and rejected.
list.pop(x) accepts any object x following the __index__ protocol.
A number of places, including integer negation and absolute value, were fixed to not rely on undefined behaviour of the C compiler anymore.
Bug #1566800: make sure that EnvironmentError can be called with any number of arguments, as was the case in Python 2.4.
Patch #1567691: super() and new.instancemethod() now don't accept keyword arguments any more (previously they accepted them, but didn't use them).
Fix a bug in the parser's future statement handling that led to "with" not being recognized as a keyword after, e.g., this statement: from __future__ import division, with_statement
Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).
Fix %zd string formatting on Mac OS X so it prints negative numbers.
Allow exception instances to be directly sliced again.
Bug #1551432: Exceptions do not define an explicit __unicode__ method. This allows calling unicode() on exceptions classes directly to succeed.
Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack. Also make sure that every exception class has __module__ set to 'exceptions'.
Bug #1550983: emit better error messages for erroneous relative imports (if not in package and if beyond toplevel package).
Overflow checking code in integer division ran afoul of new gcc optimizations. Changed to be more standard-conforming.
Patch #1542451: disallow continue anywhere under a finally.
Patch #1546288: fix seg fault in dict_equal due to ref counting bug.
The return tuple from str.rpartition(sep) is (tail, sep, head) where head is the original string if sep was not found.
Bug #1520864: unpacking singleton tuples in list comprehensions and generator expressions (x for x, in ... ) works again. Fixing this problem required changing the .pyc magic number. This means that .pyc files generated before 2.5c2 will be regenerated.
with and as are now keywords.
Bug #1664966: Fix crash in exec if Unicode filename can't be decoded.
Issue #1537: Changed GeneratorExit's base class from Exception to BaseException.
Issue #1703448: A joined thread could show up in the threading.enumerate() list after the join() for a brief period until it actually exited.
Patch #2274: Add heapq.heappushpop().
Add inspect.isabstract(object) to fix bug #2223
Add a __format__ method to Decimal, to support PEP 3101.
Add a timing parameter when using trace.Trace to print out timestamps.
Issue #1627: httplib now ignores negative Content-Length headers.
Issue #900744: If an invalid chunked-encoding header is sent by a server, httplib will now raise IncompleteRead and close the connection instead of raising ValueError.
Issue #1492: The content type of BaseHTTPServer error messages can now be overridden.
Issue #1781: ConfigParser now does not let you add the "default" section (ignore-case)
Removed uses of dict.has_key() from distutils, and uses of callable() from copy_reg.py, so the interpreter now starts up without warnings when '-3' is given. More work like this needs to be done in the rest of the stdlib.
Issue #1916: added isgenerator() and isgeneratorfunction() to inspect.py.
Issue #1224: Fixed bad url parsing when path begins with double slash.
ctypes instances that are not or do not contain pointers can now be pickled.
Patch #1966: Break infinite loop in httplib when the servers implements the chunked encoding incorrectly.
Rename rational.py to fractions.py and the rational.Rational class to fractions.Fraction, to avoid the name clash with the abstract base class numbers.Rational. See discussion in issue #1682.
The pickletools module now provides an optimize() function that eliminates unused PUT opcodes from a pickle string.
Patch #2021: Allow tempfile.NamedTemporaryFile and SpooledTemporaryFile to be used in with statements by correctly supporting the context management protocol.
Patch #1979: Add rich comparisons to Decimal, and make Decimal comparisons involving a NaN follow the IEEE 754 standard.
Issue #2004: tarfile.py: Use mode 0700 for temporary directories and default permissions for missing directories.
Issue #175006: The debugger used to skip the condition of a "while" statement after the first iteration. Now it correctly steps on the expression, and breakpoints on the "while" statement are honored on each loop.
Issue #1765140: add an optional delay argument to FileHandler and its subclasses. Defaults to false (existing behaviour), but if true, defers opening the file until the first call to emit().
The pprint module now supports sets and frozensets.
Issue #1221598: add optional callbacks to ftplib.FTP's storbinary() and storlines() methods. (Contributed by Phil Schwartz)
Issue #1715: include sub-extension modules in pydoc's text output.
Issue #1836: fix an off-by-one bug in TimedRotatingHandler's rollover time calculation.
Issue #1021: fix a bug to allow basicConfig to accept NOTSET as a level.
Issue #932563: add LoggerAdapter convenience class to make it easier to add contextual information in logging output.
Issue #1760556: fix a bug to avoid FileHandler throwing an exception in flush().
Bug #1530959: distutils' build command now uses different build directory when building extension modules against versions of Python compiled with --with-pydebug.
Issue #1555501: move plistlib from plat-mac directory to general library.
Issue #1269: fix a bug in pstats.add_callers() and add a unit test file for pstats.
Issue #1669: don't allow shutil.rmtree() to be called on a symlink to a directory.
Issue #1664522: in urllib, don't read non-existing directories in ftp mode, returning a 0-byte file -- raise an IOError instead.
Issue #856047: respect the no_proxy environment variable when using the http_proxy etc. environment variables in urllib.
Issue #1178141: add a getcode() method to the addinfourls that urllib.open() returns so that you can retrieve the HTTP status code.
Issue #1003: Fix zipfile decryption check, it would fail zip files with extended local headers.
Issue #1189216: Fix the zipfile module to work on archives with headers past the 2**31 byte boundary.
Issue #1336: fix a race condition in subprocess.Popen if the garbage collector kicked in at the wrong time that would cause the process to hang when the child wrote to stderr.
Issue #1146: fix how textwrap breaks a long word that would start in the last column of a line.
Issue #1693149: trace.py --ignore-module - accept multiple comma-separated modules to be given.
Issue #1822: MIMEMultipart.is_multipart() behaves correctly for a just-created (and empty) instance. Thanks Jonathan Share.
Issue #1861: Added an attribute to the sched module which returns an ordered list of upcoming events (displayed as named tuples).
Issue #1837: The queue module now also supports a LIFO queue and a priority queue.
Patch #1048820: Add insert-mode editing to curses.textpad.Textbox (patch by Stefan Wehr). Also, fix an off-by-one bug in Textbox.gather().
Issue #1831: ctypes now raises a TypeError if conflicting positional and named arguments are passed to a Structure or Union initializer. When too many positional arguments are passed, also a TypeError is raised instead of a ValueError.
Convert the internal ctypes array type cache to a WeakValueDict so that array types do not live longer than needed.
Issue #1786: pdb should use its own stdin/stdout around an exec call and when creating a recursive instance.
Issue #1698398: ZipFile.printdir() crashed because the format string expected a tuple type of length six instead of time.struct_time object.
Issue #1780: The Decimal constructor now accepts arbitrary leading and trailing whitespace when constructing from a string. Context.create_decimal no longer accepts trailing newlines.
Decimal.as_tuple(), difflib.find_longest_match() and inspect functions that returned a tuple now return a named tuple.
(0, 7) --> TestResults(failed=0, attempted=7)
Issue #846388:q re.match is interruptible now, which is particularly good for long regular expression matches.
Patch #1137: allow setting buffer_size attribute on pyexpat Parser objects to set the character data buffer size.
Issue #1757: The hash of a Decimal instance is no longer affected by the current context.
Patch #467924: add ZipFile.extract() and ZipFile.extractall() in the zipfile module.
Issue #1646: Make socket support the TIPC protocol.
Bug #1742: return os.curdir from os.path.relpath() if both arguments are equal instead of raising an exception.
Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
Patch #1698: allow '@' in username parsed by urlparse.py.
Issue #1735: TarFile.extractall() now correctly sets directory permissions and times.
Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.
Bug #1687: Fxed plistlib.py restricts <integer> to Python int when writing
Issue #1700: Regular expression inline flags incorrectly handle certain unicode characters.
Issue #1689: PEP 3141, numeric abstract base classes.
Tk issue #1851526: Return results from Python callbacks to Tcl as Tcl objects.
Issue #1642: Fix segfault in ctypes when trying to delete attributes.
Issue #1727780: Support loading pickles of random.Random objects created on 32-bit systems on 64-bit systems, and vice versa. As a consequence of the change, Random pickles created by Python 2.6 cannot be loaded in Python 2.5.
Issue #1455: The distutils package now supports VS 2005 and VS 2008 for both the msvccompiler and cygwincompiler.
Issue #1531: tarfile.py: Read fileobj from the current offset, do not seek to the start.
Issue #1534: Added a dictionary sys.float_info with information about the internal floating point type to the sys module.
Issue #1429818: patch for trace and doctest modules so they play nicely together.
doctest made a bad assumption that a package's __loader__.get_data() method used universal newlines.
Issue #1705170: contextlib.contextmanager was still swallowing StopIteration in some cases. This should no longer happen.
Issue #1292: On alpha, arm, ppc, and s390 linux systems the --with-system-ffi configure option defaults to "yes".
IN module for FreeBSD 8 is added and preexisting FreeBSD 6 and 7 files are updated.
Issues #1181, #1287: unsetenv() is now called when the os.environ.pop() and os.environ.clear() methods are used.
ctypes will now work correctly on 32-bit systems when Python is configured with --with-system-ffi.
Patch #1203: ctypes now does work on OS X when Python is built with --disable-toolbox-glue.
collections.deque() now supports a "maxlen" argument.
itertools.count() is no longer bounded to LONG_MAX. Formerly, it raised an OverflowError. Now, automatically shifts from ints to longs.
Added itertools.product() which forms the Cartesian product of the input iterables.
Added itertools.combinations() and itertools.permutations().
Patch #1541463: optimize performance of cgi.FieldStorage operations.
Decimal is fully updated to the latest Decimal Specification (v1.66).
Bug #1153: repr.repr() now doesn't require set and dictionary items to be orderable to properly represent them.
A 'c_longdouble' type was added to the ctypes module.
Bug #1709599: Run test_1565150 only if the file system is NTFS.
When encountering a password-protected robots.txt file the RobotFileParser no longer prompts interactively for a username and password (bug 813986).
TarFile.__init__() no longer fails if no name argument is passed and the fileobj argument has no usable name attribute (e.g. StringIO).
The functools module now provides 'reduce', for forward compatibility with Python 3000.
Server-side SSL support and cert verification added, by Bill Janssen.
socket.ssl deprecated; use new ssl module instead.
uuid creation is now threadsafe.
EUC-KR codec now handles the cheot-ga-keut composed make-up hangul syllables.
GB18030 codec now can encode additional two-byte characters that are missing in GBK.
Add new codecs for UTF-32, UTF-32-LE and UTF-32-BE.
Bug #1704793: Return UTF-16 pair if unicodedata.lookup cannot represent the result in a single character.
Bug #978833: Close https sockets by releasing the _ssl object.
Change location of the package index to pypi.python.org/pypi
Bug #1701409: Fix a segfault in printing ctypes.c_char_p and ctypes.c_wchar_p when they point to an invalid location. As a sideeffect the representation of these instances has changed.
tarfile.py: Added "exclude" keyword argument to TarFile.add().
Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple attribute.
The urlopen function of urllib2 now has an optional timeout parameter (note that it actually works with HTTP, HTTPS, FTP and FTPS connections).
In ftplib, the FTP.ntransfercmd method, when in passive mode, now uses the socket.create_connection function, using the timeout specified at connection time.
Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it reads a file that ends with incomplete sequence and sizehint argument for .read() is specified.
Bug #1730389: Change time.strptime() to use \s+ instead of \s* when matching spaces in the specified format argument.
Bugs #1668596/#1720897: distutils now copies data files even if package_dir is empty.
sha now raises a DeprecationWarning upon import.
md5 now raises a DeprecationWarning upon import.
Issue #1385: The hmac module now computes the correct hmac when using hashes with a block size other than 64 bytes (such as sha384 and sha512).
mimify now raises a DeprecationWarning upon import.
MimeWriter now raises a DeprecationWarning upon import.
tarfile.py: Improved unicode support. Unicode input names are now officially supported. Added "errors" argument to the TarFile class.
urllib.ftpwrapper class now accepts an optional timeout.
shlex.split() now has an optional "posix" parameter.
The posixfile module now raises a DeprecationWarning.
Remove the gopherlib module. This also leads to the removal of gopher support in urllib/urllib2.
Fix bug in marshal where bad data would cause a segfault due to lack of an infinite recursion check.
Removed plat-freebsd2 and plat-freebsd3 directories (and IN.py in the directories).
HTML-escape the plain traceback in cgitb's HTML output, to prevent the traceback inadvertently or maliciously closing the comment and injecting HTML into the error page.
The popen2 module and os.popen* are deprecated. Use the subprocess module.
Added an optional credentials argument to SMTPHandler, for use with SMTP servers which require authentication.
Patch #1695948: Added optional timeout parameter to SocketHandler.
Bug #1652788: Minor fix for currentframe.
Patch #1598415: Added WatchedFileHandler to better support external log file rotation using e.g. newsyslog or logrotate. This handler is only useful in Unix/Linux environments.
Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file (as opposed to the command line) will now write file names ending in ".cpp" too.
As specified in RFC 2616, an HTTP response like 2xx indicates that the client's request was successfully received, understood, and accepted. Now in these cases no error is raised in urllib (issue #1177) and urllib2.
Bug #1290505: time.strptime's internal cache of locale information is now properly recreated when the locale is changed.
Patch #1685563: remove (don't add) duplicate paths in distutils.MSVCCompiler.
Added a timeout parameter to the constructor of other protocols (telnetlib, ftplib, smtplib and poplib). This is second part of the work started with create_connection() and timeout in httplib, and closes patch #723312.
Patch #1676823: Added create_connection() to socket.py, which may be called with a timeout, and use it from httplib (whose HTTPConnection and HTTPSConnection now accept an optional timeout).
Bug #978833: Revert r50844, as it broke _socketobject.dup.
Bug #1675967: re patterns pickled with Python 2.4 and earlier can now be unpickled with Python 2.5 and newer.
Patch #1630118: add a SpooledTemporaryFile class to tempfile.py.
Patch #1273829: os.walk() now has a "followlinks" parameter. If set to True (which is not the default), it visits symlinks pointing to directories.
Bug #1681228: the webbrowser module now correctly uses the default GNOME or KDE browser, depending on whether there is a session of one of those present. Also, it tries the Windows default browser before trying Mozilla variants.
Patch #1339796: add a relpath() function to os.path.
Patch #1681153: the wave module now closes a file object it opened if initialization failed.
Bug #767111: fix long-standing bug in urllib which caused an AttributeError instead of an IOError when the server's response didn't contain a valid HTTP status line.
Patch #957650: "%var%" environment variable references are now properly expanded in ntpath.expandvars(), also "~user" home directory references are recognized and handled on Windows.
Patch #1429539: pdb now correctly initializes the __main__ module for the debugged script, which means that imports from __main__ work correctly now.
The nonobvious commands.getstatus() function is now deprecated.
Patch #1393667: pdb now has a "run" command which restarts the debugged Python program, optionally with different arguments.
Patch #1649190: Adding support for _Bool to ctypes as c_bool.
Patch #1530482: add pydoc.render_doc() which returns the documentation for a thing instead of paging it to stdout, which pydoc.doc() does.
Patch #1533909: the timeit module now accepts callables in addition to strings for the code to time and the setup code. Also added two convenience functions for instantiating a Timer and calling its methods.
Patch #1537850: tempfile.NamedTemporaryFile now has a "delete" parameter which can be set to False to prevent the default delete-on-close behavior.
Patch #1581073: add a flag to textwrap that prevents the dropping of whitespace while wrapping.
Patch #1603688: ConfigParser.SafeConfigParser now checks values that are set for invalid interpolation sequences that would lead to errors on reading back those values.
Added support for the POSIX.1-2001 (pax) format to tarfile.py. Extended and cleaned up the test suite. Added a new testtar.tar.
Patch #1449244: Support Unicode strings in email.message.Message.{set_charset,get_content_charset}.
Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS" to pydoc's help keywords.
Patch #1555098: use str.join() instead of repeated string concatenation in robotparser.
Patch #1635454: the csv.DictWriter class now includes the offending field names in its exception message if you try to write a record with a dictionary containing fields not in the CSV field names list.
Patch #1668100: urllib2 now correctly raises URLError instead of OSError if accessing a local file via the file:// protocol fails.
Patch #1677862: Require a space or tab after import in .pth files.
Patch #1192590: Fix pdb's "ignore" and "condition" commands so they trap the IndexError caused by passing in an invalid breakpoint number.
Patch #1599845: Add an option to disable the implicit calls to server_bind() and server_activate() in the constructors for TCPServer, SimpleXMLRPCServer and DocXMLRPCServer.
Bug #1531963: Make SocketServer.TCPServer's server_address always be equal to calling getsockname() on the server's socket. Fixed by patch #1545011.
Patch #742598: Add .timeout attribute to SocketServer that calls .handle_timeout() when no requests are received.
Bug #1651235: When a tuple was passed to a ctypes function call, Python would crash instead of raising an error.
Bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0) returned string up to the first NUL character.
Patch #957003: Implement smtplib.LMTP.
Patch #1481079: add support for HTTP_REFERER to CGIHTTPServer.
Patch #1675424: Added tests for uncovered code in the zipfile module. The KeyError raised by Zipfile.getinfo for nonexistent names now has a descriptive message.
Bug #1115886: os.path.splitext('.cshrc') gives now ('.cshrc', '').
unittest now verifies more of its assumptions. In particular, TestCase and TestSuite subclasses (not instances) are no longer accepted in TestSuite.addTest(). This should cause no incompatibility since it never made sense with ordinary subclasses -- the failure just occurred later, with a more cumbersome exception.
Patch #787789: allow to pass custom TestRunner instances to unittest's main() function.
Patches #1550273, #1550272: fix a few bugs in unittest and add a comprehensive test suite for the module.
Patch #1001604: glob.glob() now returns unicode filenames if it was given a unicode argument and os.listdir() returns unicode filenames.
Patch #1673619: setup.py identifies extension modules it doesn't know how to build and those it knows how to build but that fail to build.
Patch #912410: Replace HTML entity references for attribute values in HTMLParser.
Patch #1663234: you can now run doctest on test files and modules using "python -m doctest [-v] filename ...".
Patch #1121142: Implement ZipFile.open.
Taught setup.py how to locate Berkeley DB on Macs using MacPorts.
Added heapq.merge() for merging sorted input streams.
Added collections.namedtuple() for assigning field names to tuples.
Added itertools.izip_longest().
Have the encoding package's search function dynamically import using absolute import semantics.
Patch #1647484: Renamed GzipFile's filename attribute to name.
Patch #1517891: Mode 'a' for ZipFile now creates the file if it doesn't exist.
Patch #698833: Support file decryption in zipfile.
Patch #685268: Consider a package's __path__ in imputil.
Patch #1463026: Support default namespace in XMLGenerator.
Patch #1571379: Make trace's --ignore-dir facility work in the face of relative directory names.
Bug #1600860: Search for shared python library in LIBDIR, not lib/python/config, on "linux" and "gnu" systems.
Patch #1652681: tarfile.py: create nonexistent files in append mode and allow appending to empty files.
Bug #1124861: Automatically create pipes if GetStdHandle fails in subprocess.
Patch #1634778: add missing encoding aliases for iso8859_15 and iso8859_16.
Patch #1638243: the compiler package is now able to correctly compile a with statement; previously, executing code containing a with statement compiled by the compiler package crashed the interpreter.
Bug #1643943: Fix time.strptime's support for the %U directive.
Patch #1507247: tarfile.py: use current umask for intermediate directories.
Patch #1627441: close sockets properly in urllib2.
Bug #494589: make ntpath.expandvars behave according to its docstring.
Changed platform module API python_version_tuple() to actually return a tuple (it used to return a list).
Added new platform module APIs python_branch(), python_revision(), python_implementation() and linux_distribution().
Added support for IronPython and Jython to the platform module.
The sets module has been deprecated. Use the built-in set/frozenset types instead.
Bug #1610795: make ctypes.util.find_library work on BSD systems.
Fixes for 64-bit Windows: In ctypes.wintypes, correct the definitions of HANDLE, WPARAM, LPARAM data types. Make parameterless foreign function calls work.
The version number of the ctypes package changed to "1.1.0".
Bug #1627575: logging: Added _open() method to FileHandler which can be used to reopen files. The FileHandler instance now saves the encoding (which can be None) in an attribute called "encoding".
Bug #411881: logging.handlers: bare except clause removed from SMTPHandler.emit. Now, only ImportError is trapped.
Bug #411881: logging.handlers: bare except clause removed from SocketHandler.createSocket. Now, only socket.error is trapped.
Bug #411881: logging: bare except clause removed from LogRecord.__init__. Now, only ValueError, TypeError and AttributeError are trapped.
Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj argument.
Patch #1182394 from Shane Holloway: speed up HMAC.hexdigest.
Patch #1262036: Prevent TarFiles from being added to themselves under certain conditions.
Patch #1230446: tarfile.py: fix ExFileObject so that read() and tell() work correctly together with readline().
Patch #1484695: The tarfile module now raises a HeaderError exception if a buffer given to frombuf() is invalid.
Bug #1503765: Fix a problem in logging.config with spaces in comma- separated lists read from logging config files.
Patch #1604907: Fix problems in logging.handlers caused at logging shutdown when syslog handlers fail to initialize because of syslogd problems.
Patch #1608267: fix a race condition in os.makedirs() if the directory to be created is already there.
Patch #1610437: fix a tarfile bug with long filename headers.
Patch #1371075: Make ConfigParser accept optional dict type for ordering, sorting, etc.
Bug #1563807: _ctypes built on AIX fails with ld ffi error.
Bug #1598620: A ctypes Structure cannot contain itself.
Patch #1070046: Marshal new-style objects like InstanceType in xmlrpclib.
cStringIO.truncate(-1) now raises an IOError, like StringIO and regular files.
Patch #1472877: Fix Tix subwidget name resolution.
Patch #1594554: Always close a tkSimpleDialog on ok(), even if an exception occurs.
Patch #1538878: Don't make tkSimpleDialog dialogs transient if the parent window is withdrawn.
Bug #1597824: return the registered function from atexit.register() to facilitate usage as a decorator.
Patch #1360200: Use unmangled_version RPM spec field to deal with file name mangling.
Patch #1359217: Process 2xx response in an ftplib transfer that precedes an 1xx response.
Patch #1355023: support whence argument for GzipFile.seek.
Patch #1065257: Support passing open files as body in HTTPConnection.request().
Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder() weren't passing the message factory on to newly created Maildir/MH objects.
Patch #1514543: mailbox.py: In the Maildir class, report errors if there's a filename clash instead of possibly losing a message. (Patch by David Watson.)
Patch #1514544: Try to ensure that messages/indexes have been physically written to disk after calling .flush() or .close(). (Patch by David Watson.)
Patch #1592250: Add elide argument to Tkinter.Text.search.
Patch #838546: Make terminal become controlling in pty.fork().
Patch #1351744: Add askyesnocancel helper for tkMessageBox.
Patch #1060577: Extract list of RPM files from spec file in bdist_rpm.
Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.
Patch #1583880: fix tarfile's problems with long names and posix/ GNU modes.
Bug #1586448: the compiler module now emits the same bytecode for list comprehensions as the built-in compiler, using the LIST_APPEND opcode.
Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and fix all codecs file wrappers to work correctly with the "with" statement (bug #1586513).
Lib/modulefinder.py now handles absolute and relative imports correctly.
Patch #1567274: Support SMTP over TLS.
Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that ctypes isn't considered as requiring executable stacks.
ctypes callback functions only support 'fundamental' data types as result type. Raise an error when something else is used. This is a partial fix for Bug #1574584.
Fix turtle so that time.sleep is imported for the entire library. Allows the demo2 function to be executed on its own instead of only when the module is run as a script.
Bug #813342: Start the IDLE subprocess with -Qnew if the parent is started with that option.
Bug #1565150: Fix subsecond processing for os.utime on Windows.
Support for MSVC 8 was added to bdist_wininst.
Bug #1446043: correctly raise a LookupError if an encoding name given to encodings.search_function() contains a dot.
Bug #1560617: in pyclbr, return full module name not only for classes, but also for functions.
Bug #1457823: cgi.(Sv)FormContentDict's constructor now takes keep_blank_values and strict_parsing keyword arguments.
Bug #1566602: correct failure of posixpath unittest when $HOME ends with a slash.
Bug #1565661: in webbrowser, split() the command for the default GNOME browser in case it is a command with args.
Made the error message for time.strptime when the data and format do match be more clear.
Fix a bug in traceback.format_exception_only() that led to an error being raised when print_exc() was called without an exception set. In version 2.4, this printed "None", restored that behavior.
Make webbrowser.BackgroundBrowser usable in Windows (it wasn't because the close_fds arg to subprocess.Popen is not supported).
Reverted patch #1504333 to sgmllib because it introduced an infinite loop.
Patch #1553314: Fix the inspect.py slowdown that was hurting IPython & SAGE by adding smarter caching in inspect.getmodule()
Fix missing import of the types module in logging.config.
Patch #1550886: Fix decimal module context management implementation to match the localcontext() example from PEP 343.
Bug #1545341: The 'classifier' keyword argument to the Distutils setup() function now accepts tuples as well as lists.
Bug #1541863: uuid.uuid1 failed to generate unique identifiers on systems with low clock resolution.
Bug #1531862: Do not close standard file descriptors in subprocess.
idle: Honor the "Cancel" action in the save dialog (Debian bug #299092).
Fix utf-8-sig incremental decoder, which didn't recognise a BOM when the first chunk fed to the decoder started with a BOM, but was longer than 3 bytes.
The implementation of UnicodeError objects has been simplified (start and end attributes are now stored directly as Py_ssize_t members).
Issue #829951: In the smtplib module, SMTP.starttls() now complies with RFC 3207 and forgets any knowledge obtained from the server not obtained from the TLS negotiation itself. Patch contributed by Bill Fenner.
Issue #1339: The smtplib.SMTP class has been refactored a bit such that the SMTP.starttls() caller no longer needs to call ehlo() beforehand. SMTP.starttls() now raises an exception of the server does not claim to support starttls. Adds the SMTP.ehlo_or_helo_if_needed() method. Patch contributed by Bill Fenner.
Patch #1089358: Add signal.siginterrupt, a wrapper around siginterrupt(3).
Patch #1657: added select.epoll and select.kqueue.
Patch #1506171: added operator.methodcaller().
Patch #1826: operator.attrgetter() now supports dotted attribute paths.
Patch #1957: syslogmodule: Release GIL when calling syslog(3).
Bug #2112: mmap.error is now a subclass of EnvironmentError and not a direct EnvironmentError.
Bug #2111: mmap segfaults when trying to write a block opened with PROT_READ.
Bug #2063: correct order of utime and stime in os.times() result on Windows.
Patch #1736: Fix file name handling of _msi.FCICreate.
Updated big5hkscs codec to the HKSCS revision of 2004.
Issue #1940: make it possible to use curses.filter() before curses.initscr() as the documentation says.
Backport of _fileio module from Python 3.0.
Patch #1087741: mmap.mmap is now a class, not a factory function. It is also subclassable now.
Patch #1648: added sys.getprofile() and sys.gettrace().
Patch #1663329: added os.closerange() function to quickly close a range of file descriptors without considering errors.
Patch #976880: mmap objects now have an rfind method that works as expected. mmap.find also takes an optional end parameter.
_winreg's HKEY object has gained __enter__ and __exit__ methods to support the context manager protocol. The _winreg module also gained a new function ExpandEnvironmentStrings to expand REG_EXPAND_SZ keys.
itertools.starmap() now accepts any iterable input. Previously, it required the function inputs to be tuples.
itertools.chain() now has an alternate constructor, chain.from_iterable().
Issue #1646: Make socket support TIPC. The socket module now has support for TIPC under Linux, see http://tipc.sf.net/ for more information.
Added interface for Windows' WSAIoctl to socket object and added an example for a simple network sniffer.
Bug #1301: Bad assert in _tkinter fixed.
Added bdist_wininst executable for VS 2008.
Bug #1604: collections.deque.__init__(iterable) now clears any prior contents before adding elements from the iterable. This fix brings the behavior into line with that for list.__init__().
Added wide char functions to msvcrt module: getwch, getwche, putwch and ungetwch. The functions accept or return unicode.
os.access now returns True on Windows for any existing directory.
Added warnpy3k function to the warnings module.
Marshal.dumps() now expects exact type matches for int, long, float, complex, tuple, list, dict, set, and frozenset. Formerly, it would silently miscode subclasses of those types. Now, it raises a ValueError instead.
Patch #1388440: Add set_completion_display_matches_hook and get_completion_type to readline.
Bug #1649098: Avoid declaration of zero-sized array declaration in structure.
Removed the rgbimg module; been deprecated since Python 2.5.
Bug #1721309: prevent bsddb module from freeing random memory.
Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as intended for RECNO databases.
pybsddb.sf.net Bug #477182: Load the database flags at database open time so that opening a database previously created with the DB_DUP or DB_DUPSORT flag set will keep the proper behavior on subsequent opens. Specifically: dictionary assignment to a DB object will replace all values for a given key when the database allows duplicate values. DB users should use DB.put(k, v) when they want to store duplicates; not DB[k] = v.
Add the bsddb.db.DBEnv.lock_id_free method.
Bug #1686475: Support stat'ing open files on Windows again.
Patch #1185447: binascii.b2a_qp() now correctly quotes binary characters with ASCII value less than 32. Also, it correctly quotes dots only if they occur on a single line, as opposed to the previous behavior of quoting dots if they are the second character of any line.
Bug #1622896: fix a rare corner case where the bz2 module raised an error in spite of a succesful compression.
Patch #1654417: make operator.{get,set,del}slice use the full range of Py_ssize_t.
Patch #1646728: datetime.fromtimestamp fails with negative fractional times. With unittest.
Patch #1490190: posixmodule now includes os.chflags() and os.lchflags() functions on platforms where the underlying system calls are available.
Patch #1494140: Add documentation for the new struct.Struct object.
Patch #1432399: Support the HCI protocol for bluetooth sockets
Patch #1657276: Make NETLINK_DNRTMSG conditional.
Bug #1653736: Complain about keyword arguments to time.isoformat.
Bug #1486663: don't reject keyword arguments for subclasses of built-in types.
Patch #1610575: The struct module now supports the 't' code, for C99 _Bool.
Patch #1635058: ensure that htonl and friends never accept or return negative numbers, per the underlying C implementation.
Patch #1544279: Improve thread-safety of the socket module by moving the sock_addr_t storage out of the socket object.
Patch #1019808: fix bug that causes an incorrect error to be returned when a socket timeout is set and a connection attempt fails.
Speed up function calls into the math module.
Bug #1588217: don't parse "= " as a soft line break in binascii's a2b_qp() function, instead leave it in the string as quopri.decode() does.
Bug #1599782: Fix segfault on bsddb.db.DB().type().
Bug #1567666: Emulate GetFileAttributesExA for Win95.
Patch #1576166: Support os.utime for directories on Windows NT+.
Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault when encoding non-BMP unicode characters.
Bug #1556784: allow format strings longer than 127 characters in datetime's strftime function.
Fix itertools.count(n) to work with negative numbers again.
RLIMIT_SBSIZE was added to the resource module where available.
Bug #1551427: fix a wrong NULL pointer check in the win32 version of os.urandom().
Bug #1548092: fix curses.tparm seg fault on invalid input.
Patch #1114: fix curses module compilation on 64-bit AIX, & possibly other 64-bit LP64 platforms where attr_t is not the same size as a long. (Contributed by Luke Mewburn.)
Bug #1550714: fix SystemError from itertools.tee on negative value for n.
Fixed a few bugs on cjkcodecs: - gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT
correctly.
Bug #1552726: in readline.c, avoid repeatedly polling in interactive mode by only placing a timeout on the select() if an input hook has been defined. This prevents an interactive Python from waking up 10 times per second. Patch by Richard Boulton.
fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments were transposed.
Added support for linking the bsddb module against BerkeleyDB 4.5.x, 4.6.x and 4.7.x.
Bug #1633621: if curses.resizeterm() or curses.resize_term() is called, update _curses.LINES, _curses.COLS, curses.LINES and curses.COLS.
Fix an off-by-one bug in locale.strxfrm().
Fix libffi configure for hppa*--linux | parisc*--linux.
Build using system ffi library on arm*-linux*.
Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress
bsddb module: Fix memory leak when using database cursors on databases without a DBEnv.
The sqlite3 module was updated to pysqlite 2.4.1.
(For information about older versions, consult the HISTORY file.)