+++++++++++ Python News +++++++++++ What's New in Python 3.2.4 ========================== *Release date: XX-XX-XXXX* Core and Builtins ----------------- - Issue #1692335: Move initial args assignment to BaseException.__new__ to help pickling of naive subclasses. - Issue #17275: Corrected class name in init error messages of the C version of BufferedWriter and BufferedRandom. - Issue #7963: Fixed misleading error message that issued when object is called without arguments. - Issue #5308: Raise ValueError when marshalling too large object (a sequence with size >= 2**31), instead of producing illegal marshal data. - Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError and a full traceback including line number. - Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.) in the interpreter. - Issue #17043: The unicode-internal decoder no longer read past the end of input buffer. - Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder. - Issue #10156: In the interpreter's initialization phase, unicode globals are now initialized dynamically as needed. - Issue #16975: Fix error handling bug in the escape-decode bytes decoder. - Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping" in any mapping, not only in a string. - Issue #11461: Fix the incremental UTF-16 decoder. Original patch by Amaury Forgeot d'Arc. - Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB. - Issue #16455: On FreeBSD and Solaris, if the locale is C, the ASCII/surrogateescape codec is now used, instead of the locale encoding, to decode the command line arguments. This change fixes inconsistencies with os.fsencode() and os.fsdecode() because these operating systems announces an ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice. - Issue #16761: Calling int() with base argument only now raises TypeError. - Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py when retrieving a REG_DWORD value. This corrects functions like winreg.QueryValueEx that may have been returning truncated values. - Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx. - Issue #16602: When a weakref's target was part of a long deallocation chain, the object could remain reachable through its weakref even though its refcount had dropped to zero. - Issue #16416: On Mac OS X, operating system data are now always encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding (which may be ASCII if no locale environment variable is set), to avoid inconsistencies with os.fsencode() and os.fsdecode() functions which are already using UTF-8/surrogateescape. - Issue #16588: Silence unused-but-set warnings in Python/thread_pthread.h - Issue #16306: Fix multiple error messages when unknown command line parameters where passed to the interpreter. Patch by Hieu Nguyen. - Issue #16453: Fix equality testing of dead weakref objects. - Issue #9535: Fix pending signals that have been received but not yet handled by Python to not persist after os.fork() in the child process. - Issue #15001: fix segfault on "del sys.module['__main__']". Patch by Victor Stinner. - Issue #5057: the peepholer no longer optimizes subscription on unicode literals (e.g. u'foo'[0]) in order to produce compatible pyc files between narrow and wide builds. - Issue #16402: When slicing a range, fix shadowing of exceptions from __index__. - Issue #16336: fix input checking in the surrogatepass error handler. Patch by Serhiy Storchaka. - Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now raises an error. - Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass received a nonempty dict from the constructor. - Issue #16197: Update winreg docstrings and documentation to match code. Patch by Zachary Ware. - Issue #14700: Fix buggy overflow checks when handling large precisions and widths in old-style and new-style formatting. - Issue #6074: Ensure cached bytecode files can always be updated by the user that created them, even when the source file is read-only. - Issue #14783: Improve int() docstring and switch docstrings for str(), range(), and slice() to use multi-line signatures. - Issue #15379: Fix passing of non-BMP characters as integers for the charmap decoder (already working as unicode strings). Patch by Serhiy Storchaka. - Issue #13992: The trashcan mechanism is now thread-safe. This eliminates sporadic crashes in multi-thread programs when several long deallocator chains ran concurrently and involved subclasses of built-in container types. - Issue #15846: Fix SystemError which happened when using ast.parse in an exception handler on code with syntax errors. - Issue #15761: Fix crash when PYTHONEXECUTABLE is set on Mac OS X. - Issue #15801: Make sure mappings passed to '%' formatting are actually subscriptable. - Issue #15726: Fix incorrect bounds checking in PyState_FindModule. Patch by Robin Schreiber. - Issue #15604: Update uses of PyObject_IsTrue() to check for and handle errors correctly. Patch by Serhiy Storchaka. - Issue #13119: sys.stdout and sys.stderr are now using "\r\n" newline on Windows, as Python 2. - Issue #14579: Fix CVE-2012-2135: vulnerability in the utf-16 decoder after error handling. Patch by Serhiy Storchaka. - Issue #15404: Refleak in PyMethodObject repr. - Issue #15394: An issue in PyModule_Create that caused references to be leaked on some error paths has been fixed. Patch by Julia Lawall. - Issue #15368: An issue that caused bytecode generation to be non-deterministic when using randomized hashing (-R) has been fixed. - Issue #16369: Global PyTypeObjects not initialized with PyType_Ready(...). - Issue #15020: The program name used to search for Python's path is now "python3" under Unix, not "python". - Issue #15897: zipimport.c doesn't check return value of fseek(). Patch by Felipe Cruz. - Issue #15033: Fix the exit status bug when modules invoked using -m switch, return the proper failure return value (1). Patch contributed by Jeff Knupp. - Issue #12268: File readline, readlines and read() or readall() methods no longer lose data when an underlying read system call is interrupted. IOError is no longer raised due to a read system call returning EINTR from within these methods. - Issue #15142: Fix reference leak when deallocating instances of types created using PyType_FromSpec(). - Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on the work by Hirokazu Yamamoto. - Issue #14775: Fix a potential quadratic dict build-up due to the garbage collector repeatedly trying to untrack dicts. - Issue #14494: Fix __future__.py and its documentation to note that absolute imports are the default behavior in 3.0 instead of 2.7. Patch by Sven Marnach. - Issue #14761: Fix potential leak on an error case in the import machinery. - Issue #14699: Fix calling the classmethod descriptor directly. - Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed. - Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError when repr() or str() is called on such an object. - Issue #14658: Fix binding a special method to a builtin implementation of a special method with a different name. - Issue #14630: Fix a memory access bug for instances of a subclass of int with value 0. - Issue #14612: Fix jumping around with blocks by setting f_lineno. - Issue #14607: Fix keyword-only arguments which started with ``__``. - Issue #13889: Check and (if necessary) set FPU control word before calling any of the dtoa.c string <-> float conversion functions, on MSVC builds of Python. This fixes issues when embedding Python in a Delphi app. - Issue #14474: Save and restore exception state in thread.start_new_thread() while writing error message if the thread leaves a unhandled exception. - Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch by Suman Saha. - Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as the module name that was not interned. - Issue #14331: Use significantly less stack space when importing modules by allocating path buffers on the heap instead of the stack. - Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not passed strings. - Issue #1469629: Allow cycles through an object's __dict__ slot to be collected. (For example if ``x.__dict__ is x``). - Issue #14172: Fix reference leak when marshalling a buffer-like object (other than a bytes object). - Issue #13521: dict.setdefault() now does only one lookup for the given key, making it "atomic" for many purposes. Patch by Filip Gruszczyński. - Issue #1602133: on Mac OS X a shared library build (``--enable-shared``) now fills the ``os.environ`` variable correctly. - Issue #14471: Fix a possible buffer overrun in the winreg module. Library ------- - Issue #17508: Corrected MemoryHandler configuration in dictConfig() where the target handler wasn't configured first. - Issue #5713: smtplib now handles 421 (closing connection) error codes when sending mail by closing the socket and reporting the 421 error code via the exception appropriate to the command that received the error response. - Issue #8862: Fixed curses cleanup when getkey is interrputed by a signal. - Issue #17443: impalib.IMAP4_stream was using the default unbuffered IO in subprocess, but the imap code assumes buffered IO. In Python2 this worked by accident. IMAP4_stream now explicitly uses buffered IO. - Issue #17476: Fixed regression relative to Python2 in undocumented pydoc 'allmethods'; it was missing unbound methods on the class. - Issue #16389: Fixed a performance regression relative to Python 3.1 in the caching of compiled regular expressions. - Issue #17431: Fix missing import of BytesFeedParser in email.parser. - Issue #1285086: Get rid of the refcounting hack and speed up urllib.parse.unquote() and urllib.parse.unquote_to_bytes(). - Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused a failure while decoding empty object literals when object_pairs_hook was specified. - Issue #14645: The email generator classes now produce output using the specified linesep throughout. Previously if the prolog, epilog, or body were stored with a different linesep, that linesep was used. This fix corrects an RFC non-compliance issue with smtplib.send_message. - Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when the list is being resized concurrently. - Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR. - Issue #14720: sqlite3: Convert datetime microseconds correctly. Patch by Lowe Thiderman. - Issue #17225: JSON decoder now counts columns in the first line starting with 1, as in other lines. - Issue #13700: Fix byte/string handling in imaplib authentication when an authobject is specified. - Issue #13153: Tkinter functions now raise TclError instead of ValueError when a string argument contains non-BMP character. - Issue #9669: Protect re against infinite loops on zero-width matching in non-greedy repeat. Patch by Matthew Barnett. - Issue #13169: The maximal repetition number in a regular expression has been increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on 64-bit). - Issue #16743: Fix mmap overflow check on 32 bit Windows. - Issue #16800: tempfile.gettempdir() no longer left temporary files when the disk is full. Original patch by Amir Szekely. - Issue #16564: Fixed regression relative to Python2 in the operation of email.encoders.encode_7or8bit when used with binary data. - Issue #17052: unittest discovery should use self.testLoader. - Issue #4591: Uid and gid values larger than 2**31 are supported now. - Issue #17141: random.vonmisesvariate() no more hangs for large kappas. - Issue #17149: Fix random.vonmisesvariate to always return results in [0, 2*math.pi]. - Issue #1470548: XMLGenerator now works with binary output streams. - Issue #6975: os.path.realpath() now correctly resolves multiple nested symlinks on POSIX platforms. - Issue #17156: pygettext.py now uses an encoding of source file and correctly writes and escapes non-ascii characters. - Issue #16564: Fixed regression relative to Python2 in the operation of email.encoders.encode_noop when used with binary data. - Issue #10355: In SpooledTemporaryFile class mode, name, encoding and newlines properties now work for unrolled files. Obsoleted and never working on Python 3 xreadline method now removed. - Issue #16686: Fixed a lot of bugs in audioop module. Fixed crashes in avgpp(), maxpp() and ratecv(). Fixed an integer overflow in add(), bias(), and ratecv(). reverse(), lin2lin() and ratecv() no more lose precision for 32-bit samples. max() and rms() no more returns a negative result and various other functions now work correctly with 32-bit sample -0x80000000. - Issue #17073: Fix some integer overflows in sqlite3 module. - Issue #17114: IDLE now uses non-strict config parser. - Issue #16723: httplib.HTTPResponse no longer marked closed when the connection is automatically closed. - Issue #16948: Fix quoted printable body encoding for non-latin1 character sets in the email package. - Issue #17089: Expat parser now correctly works with string input not only when an internal XML encoding is UTF-8 or US-ASCII. It now accepts bytes and strings larger than 2 GiB. - Issue #16903: Popen.communicate() on Unix now accepts strings when universal_newlines is true as on Windows. - Issue #6083: Fix multiple segmentation faults occured when PyArg_ParseTuple parses nested mutating sequence. - Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying stream or a decoder produces data of an unexpected type (i.e. when io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec). - Issue #15633: httplib.HTTPResponse is now mark closed when the server sends less than the advertised Content-Length. - Issue #6972: The zipfile module no longer overwrites files outside of its destination path when extracting malicious zip files. - Issue #4844: ZipFile now raises BadZipFile when opens a ZIP file with an incomplete "End of Central Directory" record. Original patch by Guilherme Polo and Alan McIntyre. - Issue #15505: `unittest.installHandler` no longer assumes SIGINT handler is set to a callable object. - Issue #12004: Fix an internal error in PyZipFile when writing an invalid Python file. Patch by Ben Morgan. - Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase interface and support all mandatory methods and properties. - Issue #13454: Fix a crash when deleting an iterator created by itertools.tee() if all other iterators were very advanced before. - Issue #12411: Fix to cgi.parse_multipart to correctly use bytes boundaries and bytes data. Patch by Jonas Wagner. - Issue #1159051: GzipFile now raises EOFError when reading a corrupted file with truncated header or footer. - Issue #15861: tkinter now correctly works with lists and tuples containing strings with whitespaces, backslashes or unbalanced braces. - Issue #10527: Use poll() instead of select() for multiprocessing pipes. - Issue #9720: zipfile now writes correct local headers for files larger than 4 GiB. - Issue #16829: IDLE printing no longer fails if there are spaces or other special characters in the file path. - Issue #13899: \A, \Z, and \B now correctly match the A, Z, and B literals when used inside character classes (e.g. '[\A]'). Patch by Matthew Barnett. - Issue #15545: Fix regression in sqlite3's iterdump method where it was failing if the connection used a row factory (such as sqlite3.Row) that produced unsortable objects. (Regression was introduced by fix for 9750). - Issue #16491: IDLE now prints chained exception tracebacks. - Issue #16828: Fix error incorrectly raised by bz2.compress(''). Patch by Martin Packman. - Issue #16541: tk_setPalette() now works with keyword arguments. - Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError. This makes `parser.clean()` work correctly. - Issue #16820: In configparser, ``parser['section'] = {}`` now preserves section order within the parser. This makes `parser.update()` preserve section order as well. - Issue #9644: Fix the encoding used by os.statvfs(): use the filesystem encoding with the surrogateescape error handler, instead of UTF-8 in strict mode. - Issue #16819: IDLE method completion now correctly works for bytes literals. - Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy. - Issue #10527: make multiprocessing use poll() instead of select() if available. - Issue #16485: Now file descriptors are closed if file header patching failed on closing an aifc file. - Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by Roger Serwy. - Issue #16618: Make glob.glob match consistently across strings and bytes regarding leading dots. Patch by Serhiy Storchaka. - Issue #16702: test_urllib2_localnet tests now correctly ignores proxies for localhost tests. - Issue #16511: Use default IDLE width and height if config param is not valid. Patch Serhiy Storchaka. - Issue #16713: Parsing of 'tel' urls using urlparse separates params from path. - Issue #16443: Add docstrings to regular expression match objects. Patch by Anton Kasyanov. - Issue #15701: Fix HTTPError info method call to return the headers information. - Issue #16646: ftplib.FTP.makeport() might lose socket error details. (patch by Serhiy Storchaka) - Issue #16626: Fix infinite recursion in glob.glob() on Windows when the pattern contains a wildcard in the drive or UNC path. Patch by Serhiy Storchaka. - Issue #16298: In HTTPResponse.read(), close the socket when there is no Content-Length and the incoming stream is finished. Patch by Eran Rundstein. - Issue #16248: Disable code execution from the user's home directory by tkinter when the -E flag is passed to Python. Patch by Zachary Ware. - Issue #16628: Fix a memory leak in ctypes.resize(). - Issue #13614: Fix setup.py register failure with invalid rst in description. Patch by Julien Courteau and Pierre Paul Lefebvre. - Issue #13512: Create ~/.pypirc securely (CVE-2011-4944). Initial patch by Philip Jenvey, tested by Mageia and Debian. - Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later on. Initial patch by SilentGhost and Jeff Ramnani. - Issue #13120: Allow to call pdb.set_trace() from thread. Patch by Ilya Sandler. - Issue #10182: The re module doesn't truncate indices to 32 bits anymore. Patch by Serhiy Storchaka. - Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous list() calls aren't added to filter(), map(), and zip() which are directly passed enumerate(). - Issue #16476: Fix json.tool to avoid including trailing whitespace. - Issue #16549: Make json.tool work again on Python 3 and add tests. Initial patch by Berker Peksag and Serhiy Storchaka. - Issue #12848: The pure Python pickle implementation now treats object lengths as unsigned 32-bit integers, like the C implementation does. Patch by Serhiy Storchaka. - Issue #1160: Fix compiling large regular expressions on UCS2 builds. Patch by Serhiy Storchaka. - Issue #14313: zipfile now raises NotImplementedError when the compression type is unknown. - Issue #16408: Fix file descriptors not being closed in error conditions in the zipfile module. Patch by Serhiy Storchaka. - Issue #16140: The subprocess module no longer double closes its child subprocess.PIPE parent file descriptors on child error prior to exec(). - Remove a bare print to stdout from the subprocess module that could have happened if the child process wrote garbage to its pre-exec error pipe. - Issue #16327: The subprocess module no longer leaks file descriptors used for stdin/stdout/stderr pipes to the child when fork() fails. - Issue #14396: Handle the odd rare case of waitpid returning 0 when not expected in subprocess.Popen.wait(). - Issue #16411: Fix a bug where zlib.decompressobj().flush() might try to access previously-freed memory. Patch by Serhiy Storchaka. - Issue #16357: fix calling accept() on a SSLSocket created through SSLContext.wrap_socket(). Original patch by Jeff McNeil. - Issue #16350: zlib.decompressobj().decompress() now accumulates data from successive calls after EOF in unused_data, instead of only saving the argument to the last call. decompressobj().flush() now correctly sets unused_data and unconsumed_tail. A bug in the handling of MemoryError when setting the unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka. - Issue #12759: sre_parse now raises a proper error when the name of the group is missing. Initial patch by Serhiy Storchaka. - Issue #16152: fix tokenize to ignore whitespace at the end of the code when no newline is found. Patch by Ned Batchelder. - Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu Patch by Todd Rovito. - Issue #16230: Fix a crash in select.select() when one the lists changes size while iterated on. Patch by Serhiy Storchaka. - Issue #16228: Fix a crash in the json module where a list changes size while it is being encoded. Patch by Serhiy Storchaka. - Issue #14897: Enhance error messages of struct.pack and struct.pack_into. Patch by Matti Mäki. - Issue #12890: cgitb no longer prints spurious
tags in text
mode when the logdir option is specified.
- Issue #16250: Fix URLError invocation with proper args.
- Issue #16305: Fix a segmentation fault occurring when interrupting
math.factorial.
- Issue #14398: Fix size truncation and overflow bugs in the bz2 module.
- Issue #16220: wsgiref now always calls close() on an iterable response.
Patch by Brent Tubbs.
- Issue #16270: urllib may hang when used for retrieving files via FTP by using
a context manager. Patch by Giampaolo Rodola'.
- Issue #16461: Wave library should be able to deal with 4GB wav files,
and sample rate of 44100 Hz.
- Issue #16176: Properly identify Windows 8 via platform.platform()
- Issue #16114: The subprocess module no longer provides a misleading
error message stating that args[0] did not exist when either the cwd or
executable keyword arguments specified a path that did not exist.
- Issue #15756: subprocess.poll() now properly handles errno.ECHILD to
return a returncode of 0 when the child has already exited or cannot
be waited on.
- Issue #12376: Pass on parameters in TextTestResult.__init__ super call
- Issue #15222: Insert blank line after each message in mbox mailboxes
- Issue #16013: Fix CSV Reader parsing issue with ending quote characters.
Patch by Serhiy Storchaka.
- Issue #15421: fix an OverflowError in Calendar.itermonthdates() after
datetime.MAXYEAR. Patch by Cédric Krier.
- Issue #15970: xml.etree.ElementTree now serializes correctly the empty HTML
elements 'meta' and 'param'.
- Issue #15842: the SocketIO.{readable,writable,seekable} methods now
raise ValueError when the file-like object is closed. Patch by Alessandro
Moura.
- Issue #15881: Fixed atexit hook in multiprocessing. Original patch
by Chris McDonough.
- Issue #15340: Fix importing the random module when /dev/urandom cannot
be opened. This was a regression caused by the hash randomization patch.
- Issue #15841: The readable(), writable() and seekable() methods of BytesIO
and StringIO objects now raise ValueError when the object has been closed.
Patch by Alessandro Moura.
- Issue #15509: webbrowser.UnixBrowser no longer passes empty arguments to
Popen when %action substitutions produce empty strings.
- Issue #16112: platform.architecture does not correctly escape argument to
/usr/bin/file. Patch by David Benjamin.
- Issue #12776,#11839: call argparse type function (specified by add_argument)
only once. Before, the type function was called twice in the case where the
default was specified and the argument was given as well. This was
especially problematic for the FileType type, as a default file would always
be opened, even if a file argument was specified on the command line.
- Issue #15906: Fix a regression in argparse caused by the preceding change,
when action='append', type='str' and default=[].
- Issue #13370: Ensure that ctypes works on Mac OS X when Python is
compiled using the clang compiler
- Issue #15544: Fix Decimal.__float__ to work with payload-carrying NaNs.
- Issue #15249: BytesGenerator now correctly mangles From lines (when
requested) even if the body contains undecodable bytes.
- Issue #15777: Fix a refleak in _posixsubprocess.
- Issue #15199: Fix JavaScript's default MIME type to application/javascript.
Patch by Bohuslav Kabrda.
- Issue #13579: string.Formatter now understands the 'a' conversion specifier.
- Issue #15793: Stack corruption in ssl.RAND_egd().
Patch by Serhiy Storchaka.
- Issue #15595: Fix subprocess.Popen(universal_newlines=True)
for certain locales (utf-16 and utf-32 family). Patch by Chris Jerdonek.
- Issue #15477: In cmath and math modules, add workaround for platforms whose
system-supplied log1p function doesn't respect signs of zeros.
- Issue #11062: Fix adding a message from file to Babyl mailbox.
- Issue #15646: Prevent equivalent of a fork bomb when using
multiprocessing on Windows without the "if __name__ == '__main__'"
idiom.
- Issue #15424: Add a __sizeof__ implementation for array objects.
Patch by Ludwig Hähne.
- Issue #15546: Fix handling of pathological input data in the peek() method
of the GzipFile class.
- Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog
ended with '\'. Patch by Roger Serwy.
- Issue #15538: Fix compilation of the getnameinfo() / getaddrinfo()
emulation code. Patch by Philipp Hagemeister.
- Issue #9803: Don't close IDLE on saving if breakpoint is open.
Patch by Roger Serwy.
- Issue #12288: Consider '0' and '0.0' as valid initialvalue
for tkinter SimpleDialog.
- Issue #15512: Add a __sizeof__ implementation for parser.
Patch by Serhiy Storchaka.
- Issue #15469: Add a __sizeof__ implementation for deque objects.
Patch by Serhiy Storchaka.
- Issue #15489: Add a __sizeof__ implementation for BytesIO objects.
Patch by Serhiy Storchaka.
- Issue #15487: Add a __sizeof__ implementation for buffered I/O objects.
Patch by Serhiy Storchaka.
- Issue #6056: Make multiprocessing use setblocking(True) on the
sockets it uses. Original patch by J Derek Wilson.
- Issue #15041: update "see also" list in tkinter documentation.
- Issue #15402: An issue in the struct module that caused sys.getsizeof to
return incorrect results for struct.Struct instances has been fixed.
Initial patch by Serhiy Storchaka.
- Issue #15232: when mangle_from is True, email.Generator now correctly mangles
lines that start with 'From ' that occur in a MIME preamble or epilogue.
- Issue #13922: argparse no longer incorrectly strips '--'s that appear
after the first one.
- Issue #12353: argparse now correctly handles null argument values.
- Issues #10017 and #14998: Fix TypeError using pprint on dictionaries with
user-defined types as keys or other unorderable keys.
- Issue #14635: telnetlib will use poll() rather than select() when possible
to avoid failing due to the select() file descriptor limit.
- Issue #15180: Clarify posixpath.join() error message when mixing str & bytes
- Issue #15230: runpy.run_path now correctly sets __package__ as described
in the documentation
- Issue #14990: Correctly fail with SyntaxError on invalid encoding
declaration.
- Issue #15247: FileIO now raises an error when given a file descriptor
pointing to a directory.
- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox
files on flush().
- Issue #10571: Fix the "--sign" option of distutils' upload command.
Patch by Jakub Wilk.
- Issue #9559: If messages were only added, a new file is no longer
created and renamed over the old file when flush() is called on an
mbox, MMDF or Babyl mailbox.
- Issue #14653: email.utils.mktime_tz() no longer relies on system
mktime() when timezone offest is supplied.
- Fix GzipFile's handling of filenames given as bytes objects.
- Issue #15101: Make pool finalizer avoid joining current thread.
- Issue #15036: Mailbox no longer throws an error if a flush is done
between operations when removing or changing multiple items in mbox,
MMDF, or Babyl mailboxes.
- Issue #10133: Make multiprocessing deallocate buffer if socket read
fails. Patch by Hallvard B Furuseth.
- Issue #13854: Make multiprocessing properly handle non-integer
non-string argument to SystemExit.
- Issue #12157: Make pool.map() empty iterables correctly. Initial
patch by mouad.
- Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError
when the path existed and had the S_ISGID mode bit set when it was
not explicitly asked for. This is no longer an exception as mkdir
cannot control if the OS sets that bit for it or not.
- Issue #14962: Update text coloring in IDLE shell window after changing
options. Patch by Roger Serwy.
- Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu.
- Issue #14443: Tell rpmbuild to use the correct version of Python in
bdist_rpm. Initial patch by Ross Lagerwall.
- Issue #14929: Stop Idle 3.x from closing on Unicode decode errors when
grepping. Patch by Roger Serwy.
- Issue #12510: Attempting to get invalid tooltip no longer closes Idle.
Other tooltipss have been corrected or improved and the number of tests
has been tripled. Original patch by Roger Serwy.
- Issue #10365: File open dialog now works instead of crashing even when
the parent window is closed before the dialog. Patch by Roger Serwy.
- Issue #14876: Use user-selected font for highlight configuration.
- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals.
Have ascii characters in help.
- Issue #14863: Update the documentation of os.fdopen() to reflect the
fact that it's only a thin wrapper around open() anymore.
- Issue #14036: Add an additional check to validate that port in urlparse does
not go in illegal range and returns None.
- Issue #14875: Use float('inf') instead of float('1e66666') in the json module.
- Issue #14426: Correct the Date format in Expires attribute of Set-Cookie
Header in Cookie.py.
- Issue #14721: Send the correct 'Content-length: 0' header when the body is an
empty string ''. Initial Patch contributed by Arve Knudsen.
- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for
ports stricter.
- Issue #9374: Generic parsing of query and fragment portions of url for any
scheme. Supported both by RFC3986 and RFC2396.
- Issue #14798: Fix the functions in pyclbr to raise an ImportError
when the first part of a dotted name is not a package. Patch by
Xavier de Gaye.
- Issue #14829: Fix bisect and range() indexing with large indices
(>= 2 ** 32) under 64-bit Windows.
- Issue #14777: tkinter may return undecoded UTF-8 bytes as a string when
accessing the Tk clipboard. Modify clipboad_get() to first request type
UTF8_STRING when no specific type is requested in an X11 windowing
environment, falling back to the current default type STRING if that fails.
Original patch by Thomas Kluyver.
- Issue #12541: Be lenient with quotes around Realm field of HTTP Basic
Authentation in urllib2.
- Issue #14662: Prevent shutil failures on OS X when destination does not
support chflag operations. Patch by Hynek Schlawack.
- Issue #14157: Fix time.strptime failing without a year on February 29th.
Patch by Hynek Schlawack.
- Issue #14768: os.path.expanduser('~/a') doesn't works correctly when HOME is '/'.
- Issue #14741: Fix missing support for Ellipsis ('...') in parser module.
- Issue #14697: Fix missing support for set displays and set comprehensions in
parser module.
- Issue #14701: Fix missing support for 'raise ... from' in parser module.
- Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running
step. Patch by Xavier de Gaye.
- Issue #14696: Fix parser module to understand 'nonlocal' declarations.
- Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near
the DST transition. Patch by Joe Peterson.
- Issue #9154: Fix parser module to understand function annotations.
- Issue #14664: It is now possible to use @unittest.skip{If,Unless} on a
test class that doesn't inherit from TestCase (i.e. a mixin).
- Issue #14160: TarFile.extractfile() failed to resolve symbolic links when
the links were not located in an archive subdirectory.
- Issue #14638: pydoc now treats non-string __name__ values as if they
were missing, instead of raising an error.
- Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites
which send EOF without trailing \r\n.
- Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the
first two lines have non-UTF-8 characters without an encoding declaration.
- Issue #14308: Fix an exception when a "dummy" thread is in the threading
module's active list after a fork().
- Issue #14538: HTMLParser can now parse correctly start tags that contain
a bare '/'.
- Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message.
- Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied
to a collection of size > sys.maxsize / 2.
- Issue #14399: zipfile now recognizes that the archive has been modified even
if only the comment is changed. In addition, the TypeError that results from
trying to set a non-binary value as a comment is now raised at the time
the comment is set rather than at the time the zipfile is written.
- Issue #7978: socketserver now restarts the select() call when EINTR is
returned. This avoids crashing the server loop when a signal is received.
Patch by Jerzy Kozera.
- Issue #14496: Fix wrong name in idlelib/tabbedpages.py.
Patch by Popa Claudiu.
- Issue #14482: Raise a ValueError, not a NameError, when trying to create
a multiprocessing Client or Listener with an AF_UNIX type address under
Windows. Patch by Popa Claudiu.
- Issue #14151: Raise a ValueError, not a NameError, when trying to create
a multiprocessing Client or Listener with an AF_PIPE type address under
non-Windows platforms. Patch by Popa Claudiu.
- Issue #13872: socket.detach() now marks the socket closed (as mirrored
in the socket repr()). Patch by Matt Joiner.
- Issue #14406: Fix a race condition when using ``concurrent.futures.wait(
return_when=ALL_COMPLETED)``. Patch by Matt Joiner.
- Issue #14409: IDLE now properly executes commands in the Shell window
when it cannot read the normal config files on startup and
has to use the built-in default key bindings.
There was previously a bug in one of the defaults.
- Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on
OSX; avoid to call handle_connect in case of a disconnected socket which
was not meant to connect.
- Issue #12757: Fix the skipping of doctests when python is run with -OO so
that it works in unittest's verbose mode as well as non-verbose mode.
- Issue #3573: IDLE hangs when passing invalid command line args
(directory(ies) instead of file(s)) (Patch by Guilherme Polo)
- Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr
attribute.
- Issue #11686: Added missing entries to email package __all__ lists
(mostly the new Bytes classes).
- Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem.
- Issue #11199: Fix the with urllib which hangs on particular ftp urls.
- Issue #14062: Header objects now correctly respect the 'linesep' setting
when processed by BytesParser (which smtplib.SMTP.send_message uses).
- Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers
instead of raising an error. This fixes a regression relative to 2.7.
- Issue #5219: Prevent event handler cascade in IDLE.
- Issue #14184: Increase the default stack size for secondary threads on
Mac OS X to avoid interpreter crashes when using threads on 10.7.
- Issue #10543: Fix unittest test discovery with Jython bytecode files.
- Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under
Windows when the child process has already exited.
- Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly
return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been
fixed.
- Issue #14177: marshal.loads() now raises TypeError when given an unicode
string. Patch by Guilherme Gonçalves.
- Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary,
WeakValueDictionary) to return a better approximation when some objects
are dead or dying. Moreover, the implementation is now O(1) rather than
O(n).
- Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode.
Patch by Mikhail Novikov.
- Issue #13447: Add a test file to host regression tests for bugs in the
scripts found in the Tools directory.
- Issue #8033: sqlite3: Fix 64-bit integer handling in user functions
on 32-bit architectures. Initial patch by Philippe Devalkeneer.
- Issue #13590: OS X Xcode 4 - improve support for universal extension modules
In particular, fix extension module build failures when trying to use
32-bit-only installer Pythons on systems with Xcode 4 (currently
OS X 10.8, 10.7, and optionally 10.6).
* Backport 3.3.0 fixes to 3.2 branch (for release in 3.2.4)
* Since Xcode 4 removes ppc support, extension module builds now
check for ppc compiler support and by default remove ppc and
ppc64 archs when they are not available.
* Extension module builds now revert to using system installed
headers and libs (/usr and /System/Library) if the SDK used
to build the interpreter is not installed or has moved.
* Try to avoid building extension modules with deprecated
and problematic Apple llvm-gcc compiler. If original compiler
is not available, use clang instead by default.
Extension Modules
-----------------
- Issue #17192: Update the ctypes module's libffi to v3.0.13. This
specifically addresses a stack misalignment issue on x86 and issues on
some more recent platforms.
- Issue #12268: The io module file object write methods no longer abort early
when one of its write system calls is interrupted (EINTR).
- Fix the leak of a dict in the time module when used in an embedded
interpreter that is repeatedly initialized and shutdown and reinitialized.
- Issue #16012: Fix a regression in pyexpat. The parser's UseForeignDTD()
method doesn't require an argument again.
- Issue #15676: Now "mmap" check for empty files before doing the
offset check. Patch by Steven Willis.
- Issue #6493: An issue in ctypes on Windows that caused structure bitfields
of type ctypes.c_uint32 and width 32 to incorrectly be set has been fixed.
- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c.
- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and
ctypes.c_float that caused an incorrect exception to be returned in the
case of overflow has been fixed.
- Issue #14212: The re module didn't retain a reference to buffers it was
scanning, resulting in segfaults.
Tests
-----
- Issue #17448: test_sax now skips if there are no xml parsers available
instead of raising an ImportError.
- Issue #11420: make test suite pass with -B/DONTWRITEBYTECODE set.
Initial patch by Thomas Wouters.
- Issue #10652: make tcl/tk tests run after __all__ test, patch by
Zachary Ware.
- Issue #11963: remove human verification from test_parser and test_subprocess.
- Issue #11732: add a new suppress_crash_popup() context manager to test.support
that disables crash popups on Windows and use it in test_capi.
- Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu.
- Issue #17249: convert a test in test_capi to use unittest and reap threads.
- Issue #17041: Fix testing when Python is configured with the
--without-doc-strings.
- Issue #15539: Added regression tests for Tools/scripts/pindent.py.
- Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize
options.
- Issue #16664: Add regression tests for glob's behaviour concerning entries
starting with a ".". Patch by Sebastian Kreft.
- Issue #15872: Add tests for a 3.3 regression which caused the new fd-based
shutil.rmtree not ignore all errors. Also add a test ensuring that rmtree
fails when being called on a symlink. Patch by Serhiy Storchaka.
- Issue #16559: Add more tests for the json module, including some from the
official test suite at json.org. Patch by Serhiy Storchaka.
- Issue #15304: Fix warning message when os.chdir() fails inside
test.support.temp_cwd(). Patch by Chris Jerdonek.
- Issue #15802: Fix test logic in TestMaildir.test_create_tmp. Patch
by Serhiy Storchaka.
- Issue #15747: ZFS always returns EOPNOTSUPP when attempting to set the
UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected
tests in test_posix.py to account for this.
- Issue #15285: Refactor the approach for testing connect timeouts using
two external hosts that have been configured specifically for this type
of test.
- Issue #15615: Add some tests for the json module's handling of invalid
input data. Patch by Kushal Das.
- Issue #15496: Add directory removal helpers for tests on Windows.
Patch by Jeremy Kloth.
- Issue #15467: Move helpers for __sizeof__ tests into test_support.
Patch by Serhiy Storchaka.
- Issue #15320: Make iterating the list of tests thread-safe when running
tests in multiprocess mode. Patch by Chris Jerdonek.
- Issue #15230: Adopted a more systematic approach in the runpy tests
- Issue #15300: Ensure the temporary test working directories are in the same
parent folder when running tests in multiprocess mode from a Python build.
Patch by Chris Jerdonek.
- test_nntplib now tolerates being run from behind NNTP gateways that add
"X-Antivirus" headers to articles
- Issue #15043: test_gdb is now skipped entirely if gdb security settings
block loading of the gdb hooks
- Issue #14026: In test_cmd_line_script, check that sys.argv is populated
correctly for the various invocation approaches (Patch by Jason Yeo)
- Issue #14032: Fix incorrect variable name in test_cmd_line_script debugging
message (Patch by Jason Yeo)
- Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing
a test failure in test_ssl.
- Issue #16698: Skip posix test_getgroups when built with OS X
deployment target prior to 10.6.
Build
-----
- Issue #16754: Fix the incorrect shared library extension on linux. Introduce
two makefile macros SHLIB_SUFFIX and EXT_SUFFIX. SO now has the value of
SHLIB_SUFFIX again (as in 2.x and 3.1). The SO macro is removed in 3.4.
- Issue #5033: Fix building of the sqlite3 extension module when the
SQLite library version has "beta" in it. Patch by Andreas Pelme.
- Issue #3754: fix typo in pthread AC_CACHE_VAL.
- Issue #17029: Let h2py search the multiarch system include directory.
- Issue #16953: Fix socket module compilation on platforms with
HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong.
- Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host.
- Issue #16593: Have BSD 'make -s' do the right thing, thanks to Daniel Shahaf
- Issue #16262: fix out-of-src-tree builds, if mercurial is not installed.
- Issue #15923: fix a mistake in asdl_c.py that resulted in a TypeError after
2801bf875a24 (see #15801).
- Issue #11715: Fix multiarch detection without having Debian development
tools (dpkg-dev) installed.
- Issue #15819: Make sure we can build Python out-of-tree from a readonly
source directory. (Somewhat related to Issue #9860.)
- Issue #15822: Ensure 2to3 grammar pickles are properly installed.
- Issue #15560: Fix building _sqlite3 extension on OS X with an SDK.
- Issue #8847: Disable COMDAT folding in Windows PGO builds.
- Issue #14197: For OS X framework builds, ensure links to the shared
library are created with the proper ABI suffix.
- Issue #14472: Update .gitignore. Patch by Matej Cepl.
- The Windows build now uses OpenSSL 1.0.0j and bzip2 1.0.6.
- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.
- Issue #14437: Fix building the _io module under Cygwin.
- Issue #14387: Do not include accu.h from Python.h.
- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.
Based on patch from Hervé Coatanhay.
- Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs.
- Issue #16256: OS X installer now sets correct permissions for doc directory.
- Issue #15587: Enable Tk high-resolution text rendering on Macs with
Retina displays. Applies to Tkinter apps, such as IDLE, on OS X
framework builds linked with Cocoa Tk 8.5.
- Issue #17161: make install now also installs a python3 man page.
Tools/Demos
-----------
- Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py
Patch by Serhiy Storchaka.
Documentation
-------------
- Issue #17047: remove doubled words in docs and docstrings
reported by Serhiy Storchaka and Matthew Barnett.
- Issue #16406: Combine the pages for uploading and registering to PyPI.
- Issue #16403: Document how distutils uses the maintainer field in
PKG-INFO. Patch by Jyrki Pulliainen.
- Issue #16695: Document how glob handles filenames starting with a
dot. Initial patch by Jyrki Pulliainen.
- Issue #8890: Stop advertising an insecure practice by replacing uses
of the /tmp directory with better alternatives in the documentation.
Patch by Geoff Wilson.
- Issue #17203: add long option names to unittest discovery docs.
- Issue #13094: add "Why do lambdas defined in a loop with different values
all return the same result?" programming FAQ.
- Issue #14901: Update portions of the Windows FAQ.
Patch by Ashish Nitin Patil.
- Issue #15990: Improve argument/parameter documentation.
- Issue #13538: Improve str() and object.__str__() documentation.
- Issue #16400: Update the description of which versions of a given package
PyPI displays.
- Issue #15677: Document that zlib and gzip accept a compression level of 0 to
mean 'no compression'. Patch by Brian Brazil.
- Issue #8040: added a version switcher to the documentation. Patch by
Yury Selivanov.
- Issue #16115: Improve subprocess.Popen() documentation around args, shell,
and executable arguments.
- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with
great native-speaker help from R. David Murray.
- Issue #15533: Clarify docs and add tests for subprocess.Popen()'s cwd
argument.
- Issue #15979: Improve timeit documentation.
- Issue #16036: Improve documentation of built-in int()'s signature and
arguments.
- Issue #15935: Clarification of argparse docs, re: add_argument() type and
default arguments. Patch contributed by Chris Jerdonek.
- Issue #11964: Document a change in v3.2 to the behavior of the indent
parameter of json encoding operations.
- Issue #14674: Add a discussion of the json module's standard compliance.
Patch by Chris Rebert.
- Issue #15630: Add an example for "continue" stmt in the tutorial. Patch by
Daniel Ellis.
- Issue #15444: Use proper spelling for non-ASCII contributor names. Patch
by Serhiy Storchaka.
- Issue #15482: Properly document the default 'level' value for __import__()
while warning about using negative values.
- Issue #15230: Clearly document some of the limitations of the runpy
module and nudge readers towards importlib when appropriate.
- Issue #13557: Clarify effect of giving two different namespaces to exec or
execfile().
- Issue #8799: Fix and improve the threading.Condition documentation.
- Issue #14943: Correct a default argument value for winreg.OpenKey
and correctly list the argument names in the function's explanation.
- Issue #14034: added the argparse tutorial.
- Issue #15250: Document that filecmp.dircmp compares files shallowly. Patch
contributed by Chris Jerdonek.
- Issue #15116: Remove references to appscript as it is no longer being
supported.
Tools/Demos
-----------
- Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py. Now
pindent.py works with a "with" statement. pindent.py no longer produces
improper indentation. pindent.py now works with continued lines broken after
"class" or "def" keywords and with continuations at the start of line.
- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka.
- Issue #14695: Fix missing support for starred assignments in
Tools/parser/unparse.py.
What's New in Python 3.2.3?
===========================
*Release date: 10-Apr-2012*
Build
-----
- Issue #14387: Work around a problem building extension modules under Windows
by undefining ``small`` before use in the Python headers.
What's New in Python 3.2.3 release candidate 2?
===============================================
*Release date: 18-Mar-2012*
Library
-------
- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils
on Windows.
Extension Modules
-----------------
- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash
table internal to the pyexpat module's copy of the expat library to avoid a
denial of service due to hash collisions. Patch by David Malcolm with some
modifications by the expat project.
What's New in Python 3.2.3 release candidate 1?
===============================================
*Release date: 24-Feb-2012*
Core and Builtins
-----------------
- Issue #13703: oCERT-2011-003: add -R command-line option and PYTHONHASHSEED
environment variable, to provide an opt-in way to protect against denial of
service attacks due to hash collisions within the dict and set types. Patch
by David Malcolm, based on work by Victor Stinner.
- Issue #14084: Fix a file descriptor leak when importing a module with a
bad encoding.
- Issue #13020: Fix a reference leak when allocating a structsequence object
fails. Patch by Suman Saha.
- Issue #13908: Ready types returned from PyType_FromSpec.
- Issue #11235: Fix OverflowError when trying to import a source file whose
modification time doesn't fit in a 32-bit timestamp.
- Fix the builtin module initialization code to store the init function for
future reinitialization.
- Issue #8052: The posix subprocess module would take a long time closing
all possible file descriptors in the child process rather than just open
file descriptors. It now closes only the open fds if possible for the
default close_fds=True behavior.
- Issue #13629: Renumber the tokens in token.h so that they match the indexes
into _PyParser_TokenNames.
- Fix the fix for issue #12149: it was incorrect, although it had the side
effect of appearing to resolve the issue. Thanks to Mark Shannon for
noticing.
- Issue #13505: Pickle bytes objects in a way that is compatible with
Python 2 when using protocols <= 2.
- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix
given by Campbell Barton).
- Issue #7111: Python can now be run without a stdin, stdout or stderr
stream. It was already the case with Python 2. However, the corresponding
sys module entries are now set to None (instead of an unusable file object).
- Issue #13436: Fix a bogus error message when an AST object was passed
an invalid integer value.
- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER
to allow compiling extension modules with -Wswitch-enum on gcc.
Initial patch by Floris Bruynooghe.
- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder
already accepts them).
- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode
error handler in interactive mode (when calling into PyOS_Readline()).
- Issue #13343: Fix a SystemError when a lambda expression uses a global
variable in the default value of a keyword-only argument:
(lambda *, arg=GLOBAL_NAME: None)
- Issue #10519: Avoid unnecessary recursive function calls in
setobject.c.
- Issue #10363: Deallocate global locks in Py_Finalize().
- Issue #13018: Fix reference leaks in error paths in dictobject.c.
Patch by Suman Saha.
- Issue #1294232: In a few cases involving metaclass inheritance, the
interpreter would sometimes invoke the wrong metaclass when building a new
class object. These cases now behave correctly. Patch by Daniel Urban.
- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler
warnings. Patch by Josh Triplett and Petri Lehtinen.
- Issue #13188: When called without an explicit traceback argument,
generator.throw() now gets the traceback from the passed exception's
``__traceback__`` attribute. Patch by Petri Lehtinen.
- Issue #7833: Extension modules built using distutils on Windows will no
longer include a "manifest" to prevent them failing at import time in some
embedded situations.
- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described
as "The pipe is being closed") is now mapped to POSIX errno EPIPE
(previously EINVAL).
- Issue #12911: Fix memory consumption when calculating the repr() of huge
tuples or lists.
- Issue #7732: Don't open a directory as a file anymore while importing a
module. Ignore the direcotry if its name matchs the module name (e.g.
"__init__.py") and raise a ImportError instead.
- Issue #13021: Missing decref on an error path. Thanks to Suman Saha for
finding the bug and providing a patch.
- Issue #12973: Fix overflow checks that relied on undefined behaviour in
list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs
caused test failures with recent versions of Clang.
- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now
mapped to POSIX errno ENOTDIR (previously EINVAL).
- Issue #9200: The str.is* methods now work with strings that contain non-BMP
characters even in narrow Unicode builds.
- Issue #12791: Break reference cycles early when a generator exits with
an exception.
- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase
titlecased and cased non-letter characters.
Library
-------
- HTMLParser is now able to handle slashes in the start tag.
- Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in
SimpleXMLRPCServer upon malformed POST request.
- Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF.
- Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert().
- Issue #13015: Fix a possible reference leak in defaultdict.__repr__.
Patch by Suman Saha.
- Issue #1326113: distutils' build_ext command --libraries option now
correctly parses multiple values separated by whitespace or commas.
- Issue #10287: nntplib now queries the server's CAPABILITIES first before
sending MODE READER, and only sends it if not already in READER mode.
Patch by Hynek Schlawack.
- Issue #13979: A bug in ctypes.util.find_library that caused
the wrong library name to be returned has been fixed.
- Issue #13993: HTMLParser is now able to handle broken end tags when
strict=False.
- Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields
with a name that is a keyword or contains quotes. Patch by Marko
Kohtala.
- Issue #10287: nntplib now queries the server's CAPABILITIES again after
authenticating (since the result may change, according to RFC 4643).
Patch by Hynek Schlawack.
- Issue #13989: Document that GzipFile does not support text mode, and give a
more helpful error message when opened with an invalid mode string.
- Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building
Distutils-based packages with C extension modules may fail because
Apple has removed gcc-4.2, the version used to build python.org
64-bit/32-bit Pythons. If the user does not explicitly override
the default C compiler by setting the CC environment variable,
Distutils will now attempt to compile extension modules with clang
if gcc-4.2 is required but not found. Also as a convenience, if
the user does explicitly set CC, substitute its value as the default
compiler in the Distutils LDSHARED configuration variable for OS X.
(Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u
SDK, neither of which are available in Xcode 4. This change does not
attempt to override settings to support their use with Xcode 4.)
- Issue #13960: HTMLParser is now able to handle broken comments when
strict=False.
- Issue #9021: Add an introduction to the copy module documentation.
- Issue #6005: Examples in the socket library documentation use sendall, where
relevant, instead send method.
- Issue #10811: Fix recursive usage of cursors. Instead of crashing,
raise a ProgrammingError now.
- Issue #10881: Fix test_site failure with OS X framework builds.
- Issue #964437: Make IDLE help window non-modal.
Patch by Guilherme Polo and Roger Serwy.
- Issue #2945: Make the distutils upload command aware of bdist_rpm products.
- Issue #13933: IDLE auto-complete did not work with some imported
module, like hashlib. (Patch by Roger Serwy)
- Issue #13901: Prevent test_distutils failures on OS X with --enable-shared.
- Issue #13676: Handle strings with embedded zeros correctly in sqlite3.
- Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell.
Original patches by Marco Scataglini and Roger Serwy.
- Issue #13848: open() and the FileIO constructor now check for NUL
characters in the file name. Patch by Hynek Schlawack.
- Issue #13806: The size check in audioop decompression functions was too
strict and could reject valid compressed data. Patch by Oleg Plakhotnyuk.
- Issue #13812: When a multiprocessing Process child raises an exception,
flush stderr after printing the exception traceback.
- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC
IV attack countermeasure.
- Issue #13772: In os.symlink() under Windows, do not try to guess the link
target's type (file or directory). The detection was buggy and made the
call non-atomic (therefore prone to race conditions).
- Issue #6631: Disallow relative file paths in urllib urlopen methods.
- Issue #13722: Avoid silencing ImportErrors when initializing the codecs
registry.
- Issue #13781: Fix GzipFile bug that caused an exception to be raised when
opening for writing using a fileobj returned by os.fdopen().
- Issue #13803: Under Solaris, distutils doesn't include bitness
in the directory name.
- Issue #13589: Fix some serialization primitives in the aifc module.
Patch by Oleg Plakhotnyuk.
- Issue #13642: Unquote before b64encoding user:password during Basic
Authentication. Patch contributed by Joonas Kuorilehto.
- Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow
tests.
- Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor.
The hang would occur when retrieving the result of a scheduled future after
the executor had been shut down.
- Issue #13502: threading: Fix a race condition in Event.wait() that made it
return False when the event was set and cleared right after.
- Issue #12926: Fix a bug in tarfile's link extraction.
- Issue #13696: Fix the 302 Relative URL Redirection problem.
- Issue #13636: Weak ciphers are now disabled by default in the ssl module
(except when SSLv2 is explicitly asked for).
- Issue #12798: Updated the mimetypes documentation.
- Issue #11006: Don't issue low level warning in subprocess when pipe2() fails.
- Issue #11829: Fix code execution holes in inspect.getattr_static for
metaclasses with metaclasses. Patch by Andreas Stührk.
- Issue #1785: Fix inspect and pydoc with misbehaving descriptors.
- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas
Stührk.
- Issue #7502: Fix equality comparison for DocTestCase instances. Patch by
Cédric Krier.
- Issue #11870: threading: Properly reinitialize threads internal locks and
condition variables to avoid deadlocks in child processes.
- Issue #8035: urllib: Fix a bug where the client could remain stuck after a
redirection or an error.
- Issue #10350: Read and save errno before calling a function which might
overwrite it. Original patch by Hallvard B Furuseth.
- Issue #13591: A bug in importlib has been fixed that caused import_module
to load a module twice.
- Issue #4625: If IDLE cannot write to its recent file or breakpoint
files, display a message popup and continue rather than crash.
(original patch by Roger Serwy)
- Issue #5905: time.strftime() is now using the locale encoding, instead of
UTF-8, if the wcsftime() function is not available.
- Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..".
Patch by Tal Einat.
- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
other than 900k.
- Issue #13439: Fix many errors in turtle docstrings.
- Issue #13487: Make inspect.getmodule robust against changes done to
sys.modules while it is iterating over it.
- Issue #12618: Fix a bug that prevented py_compile from creating byte
compiled files in the current directory. Initial patch by Sjoerd de Vries.
- Issue #13444: When stdout has been closed explicitly, we should not attempt
to flush it at shutdown and print an error.
- Issue #12856: Ensure child processes do not inherit the parent's random
seed for filename generation in the tempfile module. Patch by Brian
Harring.
- Issue #13458: Fix a memory leak in the ssl module when decoding a
certificate with a subjectAltName. Patch by Robert Xiao.
- Issue #13415: os.unsetenv() doesn't ignore errors anymore.
- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is
raised when the wrapped raw file is non-blocking and the write would block.
Previous code assumed that the raw write() would raise BlockingIOError, but
RawIOBase.write() is defined to returned None when the call would block.
Patch by sbt.
- Issue #13358: HTMLParser now calls handle_data only once for each CDATA.
- Issue #4147: minidom's toprettyxml no longer adds whitespace around a text
node when it is the only child of an element. Initial patch by Dan
Kenigsberg.
- Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
handles non-valid attributes, including adjacent and unquoted attributes.
- Issue #13193: Fix distutils.filelist.FileList under Windows.
- Issue #13384: Remove unnecessary __future__ import in Lib/random.py
- Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely
when called with a timeout. Patch by Arnaud Ysmal.
- Issue #13254: Fix Maildir initialization so that maildir contents
are read correctly.
- Issue #3067: locale.setlocale() now raises TypeError if the second
argument is an invalid iterable. Its documentation and docstring
were also updated. Initial patch by Jyrki Pulliainen.
- Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn.
- Issue #13339: Fix compile error in posixmodule.c due to missing semicolon.
Thanks to Robert Xiao.
- Issue #10570: curses.putp() and curses.tparm() are now expecting a byte
string, instead of a Unicode string.
- Issue #2892: preserve iterparse events in case of SyntaxError.
- Issue #670664: Fix HTMLParser to correctly handle the content of
```` and ````.
- Issue #10817: Fix urlretrieve function to raise ContentTooShortError even
when reporthook is None. Patch by Jyrki Pulliainen.
- Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart.
(Patch by Roger Serwy)
- Issue #13293: Better error message when trying to marshal bytes using
xmlrpc.client.
- Issue #13291: NameError in xmlrpc package.
- Issue #13258: Use callable() built-in in the standard library.
- Issue #13273: fix a bug that prevented HTMLParser to properly detect some
tags when strict=False.
- Issue #10332: multiprocessing: fix a race condition when a Pool is closed
before all tasks have completed.
- Issue #13255: wrong docstrings in array module.
- Issue #9168: now smtpd is able to bind privileged port.
- Issue #12529: fix cgi.parse_header issue on strings with double-quotes and
semicolons together. Patch by Ben Darnell and Petri Lehtinen.
- Issue #12448: smtplib now flushes stdout while running ``python -m smtplib``
in order to display the prompt correctly.
- Issue #6090: zipfile raises a ValueError when a document with a timestamp
earlier than 1980 is provided. Patch contributed by Petri Lehtinen.
- Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are
now available on Windows.
- Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number
fields in tarfile.
- Issue #13177: Functools lru_cache() no longer calls the original function
inside an exception handler. This makes tracebacks easier to read because
chained exceptions are avoided.
- Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding,
instead of the locale encoding.
- Issue #10653: On Windows, use strftime() instead of wcsftime() because
wcsftime() doesn't format time zone correctly.
- Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was
configured with different prefix and exec-prefix.
- Issue #11254: Teach distutils to compile .pyc and .pyo files in
PEP 3147-compliant __pycache__ directories.
- Issue #11250: Back port fix from 3.3 branch, so that 2to3 can handle files
with line feeds. This was ported from the sandbox to the 3.3 branch, but
didn't make it into 3.2.
- Issue #7367: Fix pkgutil.walk_paths to skip directories whose
contents cannot be read.
- Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale.
Reported and diagnosed by Thomas Kluyver.
- Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation
if the underlying raw stream is unseekable, even if the seek could be
satisfied using the internal buffer. Patch by John O'Connor.
- Issue #7689: Allow pickling of dynamically created classes when their
metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and Craig
Citro.
- Issue #4147: minidom's toprettyxml no longer adds whitespace to text nodes.
- Issue #13034: When decoding some SSL certificates, the subjectAltName
extension could be unreported.
- Issue #9871: Prevent IDLE 3 crash when given byte stings
with invalid hex escape sequences, like b'\x0'.
(Original patch by Claudiu Popa.)
- Issue #8933: distutils' PKG-INFO files will now correctly report
Metadata-Version: 1.1 instead of 1.0 if a Classifier or Download-URL field is
present.
- Issue #9561: distutils now reads and writes egg-info files using UTF-8,
instead of the locale encoding.
- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
more than 128 entities. Patch by Peter Otten.
- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.
- Issue #12636: IDLE reads the coding cookie when executing a Python script.
- Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in
the C pickle implementation.
- Issue #11564: Avoid crashes when trying to pickle huge objects or containers
(more than 2**31 items). Instead, in most cases, an OverflowError is raised.
- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is
greater than FD_SETSIZE.
- Issue #11657: Fix sending file descriptors over 255 over a multiprocessing
Pipe.
- Issue #13007: whichdb should recognize gdbm 1.9 magic numbers.
- Issue #12213: Fix a buffering bug with interleaved reads and writes that
could appear on BufferedRandom streams.
- Issue #12650: Fix a race condition where a subprocess.Popen could leak
resources (FD/zombie) when killed at the wrong time.
- Issue #10860: http.client now correctly handles an empty port after port
delimiter in URLs.
Build
-----
- Issue #6807: Run msisupport.mak earlier.
- Issue #10580: Minor grammar change in Windows installer.
- Issue #13326: Clean __pycache__ directories correctly on OpenBSD.
Tools/Demos
-----------
- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches.
Patch by Francisco Martín Brugué.
- Issue #13930: 2to3 is now able to write its converted output files to another
directory tree as well as copying unchanged files and altering the file
suffix. See its new -o, -W and --add-suffix options. This makes it more
useful in many automated code translation workflows.
- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
traceback if Python is optimized.
Tests
-----
- Issue #11689: Fix a variable scoping error in an sqlite3 test
- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py.
- Issue #13725: Fix regrtest to recognize the documented -d flag.
Patch by Erno Tukia.
- Issue #13304: Skip test case if user site-packages disabled (-s or
PYTHONNOUSERSITE). (Patch by Carl Meyer)
- Issue #13218: Fix test_ssl failures on Debian/Ubuntu.
- Issue #12821: Fix test_fcntl failures on OpenBSD 5.
- Re-enable lib2to3's test_parser.py tests, though with an expected failure
(see issue 13125).
Extension Modules
-----------------
- Issue #13840: The error message produced by ctypes.create_string_buffer
when given a Unicode string has been fixed.
- Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by
Vilmos Nebehaj.
- Issue #13159: FileIO and BZ2File now use a linear-time buffer growth
strategy instead of a quadratic-time one.
- Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle
would be finalized after the reference to its underlying BufferedRWPair's
writer got cleared by the GC.
- Issue #12881: ctypes: Fix segfault with large structure field names.
- Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by
Thomas Jarosch.
- Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype.
Thanks to Suman Saha for finding the bug and providing a patch.
- Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that
file descriptor was actually received.
- Issue #12483: ctypes: Fix a crash when the destruction of a callback
object triggers the garbage collector.
- Issue #12950: Fix passing file descriptors in multiprocessing, under
OpenIndiana/Illumos.
Documentation
-------------
- Issues #13491 and #13995: Fix many errors in sqlite3 documentation.
Initial patch for #13491 by Johannes Vogel.
- Issue #13402: Document absoluteness of sys.executable.
- Issue #13883: PYTHONCASEOK also used on OS X and OS/2.
- Issue #12949: Document the kwonlyargcount argument for the PyCode_New
C API function.
- Issue #2134: The tokenize documentation has been clarified to explain why
all operator and delimiter tokens are treated as token.OP tokens.
- Issue #13513: Fix io.IOBase documentation to correctly link to the
io.IOBase.readline method instead of the readline module.
- Issue #13237: Reorganise subprocess documentation to emphasise convenience
functions and the most commonly needed arguments to Popen.
- Issue #13141: Demonstrate recommended style for socketserver examples.
What's New in Python 3.2.2?
===========================
*Release date: 03-Sep-2011*
Core and Builtins
-----------------
- Issue #12326: sys.platform is now always 'linux2' on Linux, even if Python
is compiled on Linux 3.
- Accept bytes for the AST string type. This is temporary until a proper fix in
3.3.
Library
-------
- Issue #8286: The distutils command sdist will print a warning message instead
of crashing when an invalid path is given in the manifest template.
- Issue #12841: tarfile unnecessarily checked the existence of numerical user
and group ids on extraction. If one of them did not exist the respective id
of the current user (i.e. root) was used for the file and ownership
information was lost.
- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
now respect a --skip-build option given to bdist.
- Issue #12839: Fix crash in zlib module due to version mismatch.
Fix by Richard M. Tew.
Extension Modules
-----------------
- Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to
some functions like file.write().
What's New in Python 3.2.2 release candidate 1?
===============================================
*Release date: 14-Aug-2011*
Core and Builtins
-----------------
- Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall
outside the BMP.
- Issue #11603: Fix a crash when __str__ is rebound as __repr__. Patch by
Andreas Stührk.
- Issue #11321: Fix a crash with multiple imports of the _pickle module when
embedding Python. Patch by Andreas Stührk.
- Verify the types of AST strings and identifiers provided by the user before
compiling them.
- Issue #12579: str.format_map() now raises a ValueError if used on a
format string that contains positional fields. Initial patch by
Julian Berman.
- Issue #11627: Fix segfault when __new__ on a exception returns a
non-exception class.
- Issue #12149: Update the method cache after a type's dictionary gets
cleared by the garbage collector. This fixes a segfault when an instance
and its type get caught in a reference cycle, and the instance's
deallocator calls one of the methods on the type (e.g. when subclassing
IOBase). Diagnosis and patch by Davide Rizzo.
- When a generator yields, do not retain the caller's exception state on the
generator.
- Issue #12475: Prevent generators from leaking their exception state into the
caller's frame as they return for the last time.
Library
-------
- Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when
the file cannot be opened.
- Issue #12687: Fix a possible buffering bug when unpickling text mode
(protocol 0, mostly) pickles.
- Issue #10087: Fix the html output format of the calendar module.
- Issue #12540: Prevent zombie IDLE processes on Windows due to changes
in os.kill().
- Issue #12683: urlparse updated to include svn as schemes that uses relative
paths. (svn from 1.5 onwards support relative path).
- Issues #11104, #8688: Fix the behavior of distutils' sdist command with
manually-maintained MANIFEST files.
- Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow
symlinks: fix it. Patch by Petri Lehtinen.
- Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod')
in Python code) now finds the doc of the method.
- Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime.
- Issue #12514: Use try/finally to assure the timeit module restores garbage
collections when it is done.
- Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is
given as a low fd, it gets overwritten.
- Issue #12590: IDLE editor window now always displays the first line
when opening a long file. With Tk 8.5, the first line was hidden.
- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates)
Connection:close header.
- Issue #1813: Fix codec lookup under Turkish locales.
- Issue #12591: Improve support of "universal newlines" in the subprocess
module: the piped streams can now be properly read from or written to.
- Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without
a read1() method), and add an undocumented *write_through* parameter to
mandate unbuffered writes.
- Issue #9611, #9015: FileIO.read() clamps the length to INT_MAX on Windows.
- Issue #10883: Fix socket leaks in urllib.request when using FTP.
- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2
directory, so that "import DLFCN" and other similar imports work on
Linux 3.0.
- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN
commands; they aren't required and in fact postfix doesn't support that form.
- Close the call queue in concurrent.futures.ProcessPoolExecutor when
shutdown() is called, without waiting for the garbage collector to kick in.
- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.
- Issue #4376: ctypes now supports nested structures with an endianness
different than that of the parent structure. Patch by Vlad Riscutia.
- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
TextIOWrapper to a huge value, not TypeError.
- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
if the process has only one pipe.
- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support
Python modules using a encoding different than UTF-8 (reading the coding
cookie of the module).
- Issue #12451: pydoc: importfile() now opens the Python module in binary mode,
instead of text mode using the locale encoding, to avoid encoding issues.
- Issue #12451: runpy: run_path() now opens the Python module in binary mode,
instead of text mode using the locale encoding, to support other encodings
than UTF-8 (modules using the coding cookie).
- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead
of the text mode (using the locale encoding) to avoid encoding issues.
- Issue #14443: Ensure that .py files are byte-compiled with the correct Python
executable within bdist_rpm even on older versions of RPM
Extension Modules
-----------------
- Issue #12764: Fix a crash in ctypes when the name of a Structure field is not
a string.
- Issue #11241: subclasses of ctypes.Array can now be subclassed.
- Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper
signature. Without this, architectures where sizeof void* != sizeof int are
broken. Patch given by Hallvard B Furuseth.
C-API
-----
Build
-----
- Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling.
- Issue #12592: Make Python build on OpenBSD 5 (and future major releases).
- Issue #12372: POSIX semaphores are broken on AIX: don't use them.
Tools/Demos
-----------
- Issue #10639: reindent.py no longer converts newlines and will raise
an error if attempting to convert a file with mixed newlines.
Tests
-----
- Issue #12331: The test suite for lib2to3 can now run from an installed
Python.
- Issue #12626: In regrtest, allow to filter tests using a glob filter
with the ``-m`` (or ``--match``) option. This works with all test cases
using the unittest module. This is useful with long test suites
such as test_io or test_subprocess.
- Issue #12624: It is now possible to fail after the first failure when
running in verbose mode (``-v`` or ``-W``), by using the ``--failfast``
(or ``-G``) option to regrtest. This is useful with long test suites
such as test_io or test_subprocess.
- Issue #12587: Correct faulty test file and reference in test_tokenize.
(Patch by Robert Xiao)
- Try harder to reap dangling threads in test.support.reap_threads().
- Issue #12573: Add resource checks for dangling Thread and Process objects.
- Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64'
as the processor type on some Mac systems.
- Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and
an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder
Web site.
- Issue #12440: When testing whether some bits in SSLContext.options can be
reset, check the version of the OpenSSL headers Python was compiled against,
rather than the runtime version of the OpenSSL library.
- Issue #12497: Install test/data to prevent failures of the various codecmaps
tests.
- Issue #12496: Install test/capath directory to prevent test_connect_capath
testcase failure in test_ssl.
- Issue #12469: Run "wakeup" signal tests in subprocess to run the test in a
fresh process with only one thread and to not change signal handling of the
parent process.
- Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run
test_tk or test_ttk_guionly under a username that is not currently logged
in to the console windowserver (as may be the case under buildbot or ssh).
What's New in Python 3.2.1?
===========================
*Release date: 10-Jul-2011*
Library
-------
- Issue #12467: warnings: fix a race condition if a warning is emitted at
shutdown, if globals()['__file__'] is None.
Tests
-----
- Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary
failure in name resolution.
- Issue #11812: Solve transient socket failure to connect to 'localhost'
in test_telnetlib.py.
- Solved a potential deadlock in test_telnetlib.py. Related to issue #11812.
- Avoid failing in test_urllibnet.test_bad_address when some overzealous
DNS service (e.g. OpenDNS) resolves a non-existent domain name. The test
is now skipped instead.
What's New in Python 3.2.1 release candidate 2?
===============================================
*Release date: 03-Jul-2011*
Core and Builtins
-----------------
- Issue #12291: You can now load multiple marshalled objects from a stream, with
other data interleaved between marshalled objects.
- Issue #12084: os.stat on Windows now works properly with relative symbolic
links when called from any directory.
- Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix
the following case: sys.stdin.read() stopped with CTRL+d (end of file),
raw_input() interrupted by CTRL+c.
- Issue #9670: Increase the default stack size for secondary threads on Mac OS X
and FreeBSD to reduce the chances of a crash instead of a "maximum recursion
depth" RuntimeError exception (patch by Ronald Oussoren).
Library
-------
- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better
conformance to the RFCs: correctly handle Sender and Resent headers.
- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by
the garbage collector while the Heap lock is held.
- Issue #12451: The XInclude default loader of xml.etree now decodes files from
UTF-8 instead of the locale encoding if the encoding is not specified. It now
also opens XML files for the parser in binary mode instead of the text mode to
avoid encoding issues.
- Issue #12451: doctest.debug_script() doesn't create a temporary file anymore
to avoid encoding issues.
- Issue #12451: pydoc.synopsis() now reads the encoding cookie if available, to
read the Python module from the right encoding.
- Issue #12451: distutils now opens the setup script in binary mode to read the
encoding cookie, instead of opening it in UTF-8.
- Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to
check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the
interpreter process. This could cause failures in non-Distutils subprocesses
and was unreliable since tests or user programs could modify the interpreter
environment after Distutils set it. Instead, have Distutils set the
deployment target only in the environment of each build subprocess. It is
still possible to globally override the default by setting
MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be
greater or equal to the default value, the value with which the interpreter
was built.
- Issue #12383: Fix subprocess module with env={}: don't copy the environment
variables, start with an empty environment.
- Issue #11584: email.header.decode_header no longer fails if the header passed
to it is a Header object, and Header/make_header no longer fail if given
binary unknown-8bit input.
- Issue #11700: mailbox proxy object close methods can now be called multiple
times without error.
- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method.
- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
connection if its getresponse() method fails with a socket error. Patch
written by Ezio Melotti.
- Issue #9284: Allow inspect.findsource() to find the source of doctest
functions.
- Issue #12009: Fixed regression in netrc file comment handling.
- Issue #10694: zipfile now ignores garbage at the end of a zipfile.
- Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA.
- Issue #12168: SysLogHandler now allows NUL termination to be controlled using
a new 'append_nul' attribute on the handler.
- Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes
instead of os.stat.
- Named tuples now work correctly with vars().
- Issue #12085: Fix an attribute error in subprocess.Popen destructor if the
constructor has failed, e.g. because of an undeclared keyword argument. Patch
written by Oleg Oshmyan.
- Issue #985064: Make plistlib more resilient to faulty input plists. Patch by
Mher Movsisyan.
- Issue #12175: RawIOBase.readall() now returns None if read() returns None.
- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
if the file is closed.
- Issue #12070: Fix the Makefile parser of the sysconfig module to handle
correctly references to "bogus variable" (e.g. "prefix=$/opt/python").
- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to
their encode() method anymore, but continue to call the reset() method if the
final argument is True.
- Issue #5715: In socketserver, close the server socket in the child process.
- Correct lookup of __dir__ on objects. Among other things, this causes errors
besides AttributeError found on lookup to be propagated.
- Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore
to be able to unload the module.
- Issue #12065: connect_ex() on an SSL socket now returns the original errno
when the socket's timeout expires (it used to return None).
Extension Modules
-----------------
- Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira
Kitada.
- Issue #12221: Replace pyexpat.__version__ with the Python version.
Build
-----
- Issue #8746: Correct faulty configure checks so that os.chflags() and
os.lchflags() are once again built on systems that support these functions
(*BSD and OS X). Also add new stat file flags for OS X (UF_HIDDEN and
UF_COMPRESSED).
- Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds, ensure
"make install" creates symlinks in --prefix bin for the "-32" files in the
framework bin directory like the installer does.
Tests
-----
- Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows.
- Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures
the output and displays it on failure instead. regrtest -v doesn't print the
error twice anymore if there is only one error.
- Issue #12141: Install a copy of template C module file so that test_build_ext
of test_distutils is no longer silently skipped when run outside of a build
directory.
- Issue #8746: Add additional tests for os.chflags() and os.lchflags(). Patch
by Garrett Cooper.
- Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9 on Mac
OS X. (Patch by Ronald Oussoren)
- Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2,
iso2022_kr).
What's New in Python 3.2.1 release candidate 1?
===============================================
*Release date: 15-May-2011*
Core and Builtins
-----------------
- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal
module. Patch written by Charles-François Natali.
- Issue #12044: Fixed subprocess.Popen when used as a context manager to
wait for the process to end when exiting the context to avoid unintentionally
leaving zombie processes around.
- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
clear the end-of-file indicator after CTRL+d.
Library
-------
- Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX
with Tk 8.5.
- Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET
is set in shell.
- Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional.
- Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and
their incremental counterparts now raise OverflowError if given an input
larger than 4GB, instead of silently truncating the input and returning
an incorrect result.
- Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
attribute when called without a max_length argument.
- Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence
on a file opened in read+write mode (namely: reading, seeking a bit forward,
writing, then seeking before the previous write but still within buffered
data, and writing again).
- Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError.
With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused
IDLE to exit. Converted to valid Unicode null in PythonCmd().
- Issue #11169: compileall module uses repr() to format filenames and paths to
escape surrogate characters and show spaces.
- Issue #10419, #6011: build_scripts command of distutils handles correctly
non-ASCII path (path to the Python executable). Open and write the script in
binary mode, but ensure that the shebang is decodable from UTF-8 and from the
encoding of the script.
- Issue #8498: In socket.accept(), allow to specify 0 as a backlog value in
order to accept exactly one connection. Patch by Daniel Evers.
- Issue #11164: Stop trying to use _xmlplus in the xml module.
Build
-----
- Issue #11347: Use --no-as-needed when linking libpython3.so.
Tools/Demos
-----------
- Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and
add a smarter "py-bt" command printing a classic Python traceback.
Tests
-----
- Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch
written by Charles-François Natali.
- Issue #11614: import __hello__ prints "Hello World!". Patch written by
Andreas Stührk.
- Issue #5723: Improve json tests to be executed with and without accelerations.
- Issue #11910: Fix test_heapq to skip the C tests when _heapq is missing.
What's New in Python 3.2.1 beta 1?
==================================
*Release date: 08-May-2011*
Core and Builtins
-----------------
- Issue #1856: Avoid crashes and lockups when daemon threads run while the
interpreter is shutting down; instead, these threads are now killed when they
try to take the GIL.
- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
the check of the object type doesn't read the __class__ attribute anymore.
Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
str type). Patch written by Andreas Stührk.
- Issue #10914: Initialize correctly the filesystem codec when creating a new
subinterpreter to fix a bootstrap issue with codecs implemented in Python, as
the ISO-8859-15 codec.
- Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_*
APIs, to avoid a crash with the pthread implementation in RHEL 5. Patch by
Charles-François Natali.
- Issue #6780: fix starts/endswith error message to mention that tuples are
accepted too.
- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP chars
(e.g. "\U00012345"[0]).
- Issue #11845: Fix typo in rangeobject.c that caused a crash in
compute_slice_indices. Patch by Daniel Urban.
- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
(EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
written by Charles-Francois Natali.
- Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on
Windows if the file is a TTY to workaround a Windows bug. The Windows console
returns an error (12: not enough space error) on writing into stdout if stdout
mode is binary and the length is greater than 66,000 bytes (or less, depending
on heap usage).
- Issue #11320: fix bogus memory management in Modules/getpath.c, leading to a
possible crash when calling Py_SetPath().
- Issue #11510: Fixed optimizer bug which turned "a,b={1,1}" into "a,b=(1,1)".
- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with
3.2.0 where the stdout or stderr file descriptor being the same as the stdin
file descriptor would raise an exception. webbrowser.open would fail. fixed.
- Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when there
are many tags (e.g. when using mq). Patch by Nadeem Vawda.
- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from
UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode).
Patch written by Ray Allen.
- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with a
buffer struct having a NULL data pointer.
- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and
sys.stdin uses universal newline (replace '\r\n' by '\n').
- Issue #11828: startswith and endswith don't accept None as slice index. Patch
by Torsten Becker.
- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on
narrow build.
- Check for NULL result in PyType_FromSpec.
- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is
empty, instead of OverflowError.
Library
-------
- Issue #11927: SMTP_SSL now uses port 465 by default as documented. Patch by
Kasun Herath.
- Issue #12002: ftplib's abort() method raises TypeError.
- Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to
detect mtime changes by comparing to the system clock instead of to the
previous value of the mtime.
- ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same
file on Windows XP. As noticed in issue #10684.
- Issue #12000: When a SSL certificate has a subjectAltName without any dNSName
entry, ssl.match_hostname() should use the subject's commonName. Patch by
Nicolas Bareil.
- Issue #11647: objects created using contextlib.contextmanager now support more
than one call to the function when used as a decorator. Initial patch by Ysj
Ray.
- logging: don't define QueueListener if Python has no thread support.
- functools.cmp_to_key() now works with collections.Hashable().
- Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get
around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.
- Issue #11858: configparser.ExtendedInterpolation expected lower-case section
names.
- Issue #11324: ConfigParser(interpolation=None) now works correctly.
- Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the
strings are too long.
- Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal.
- Issue #11768: The signal handler of the signal module only calls
Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or
parallel calls. PyErr_SetInterrupt() writes also into the wake up file.
- Issue #11492: fix several issues with header folding in the email package.
- Issue #11852: Add missing imports and update tests.
- Issue #11875: collections.OrderedDict's __reduce__ was temporarily
mutating the object instead of just working on a copy.
- Issue #11467: Fix urlparse behavior when handling urls which contains scheme
specific part only digits. Patch by Santoso Wijaya.
- collections.Counter().copy() now works correctly for subclasses.
- Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows.
Patch by Santoso Wijaya.
- Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when
_json is not available.
- Issue #11830: Remove unnecessary introspection code in the decimal module.
- Issue #11703: urllib2.geturl() does not return correct url when the original
url contains #fragment.
- Issue #10019: Fixed regression in json module where an indent of 0 stopped
adding newlines and acted instead like 'None'.
- Issue #5162: Treat services like frozen executables to allow child spawning
from multiprocessing.forking on Windows.
- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().
- Issue #11747: Fix range formatting in difflib.context_diff() and
difflib.unified_diff().
- Issue #8428: Fix a race condition in multiprocessing.Pool when terminating
worker processes: new processes would be spawned while the pool is being shut
down. Patch by Charles-François Natali.
- Issue #7311: fix html.parser to accept non-ASCII attribute values.
- Issue #11605: email.parser.BytesFeedParser was incorrectly converting
multipart subparts with an 8-bit CTE into unicode instead of preserving the
bytes.
- Issue #10963: Ensure that subprocess.communicate() never raises EPIPE.
- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve
private keys.
- sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not
called yet: detect bootstrap (startup) issues earlier.
- Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows.
- Issue #11256: Fix inspect.getcallargs on functions that take only keyword
arguments.
- Issue #11696: Fix ID generation in msilib.
- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
trying to pack a negative (in-range) integer.
- Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
are now zeroed on creation. This matches the behaviour specified by the
documentation.
- Issue #7639: Fix short file name generation in bdist_msi
- Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459.
Patch by Ben Hayden.
- Issue #11635: Don't use polling in worker threads and processes launched by
concurrent.futures.
- Issue #11628: cmp_to_key generated class should use __slots__
- Issue #11666: let help() display named tuple attributes and methods
that start with a leading underscore.
- Issue #11662: Make urllib and urllib2 ignore redirections if the
scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).
- Issue #5537: Fix time2isoz() and time2netscape() functions of
httplib.cookiejar for expiration year greater than 2038 on 32-bit systems.
- Issue #11563: Connection:close header is sent by requests using URLOpener
class which helps in closing of sockets after connection is over. Patch
contributions by Jeff McNeil and Nadeem Vawda.
- Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates
unbuffered pipes, such that select() works properly on them.
- Issue #5421: Fix misleading error message when one of socket.sendto()'s
arguments has the wrong type. Patch by Nikita Vetoshkin.
- Issue #10979: unittest stdout buffering now works with class and module
setup and teardown.
- Issue #11577: fix ResourceWarning triggered by improved binhex test coverage
- Issue #11243: fix the parameter querying methods of Message to work if
the headers contain un-encoded non-ASCII data.
- Issue #11401: fix handling of headers with no value; this fixes a regression
relative to Python2 and the result is now the same as it was in Python2.
- Issue #9298: base64 bodies weren't being folded to line lengths less than 78,
which was a regression relative to Python2. Unlike Python2, the last line of
the folded body now ends with a carriage return.
- Issue #11560: shutil.unpack_archive now correctly handles the format
parameter. Patch by Evan Dandrea.
- Issue #11133: fix two cases where inspect.getattr_static can trigger code
execution. Patch by Andreas Stührk.
- Issue #11569: use absolute path to the sysctl command in multiprocessing to
ensure that it will be found regardless of the shell PATH. This ensures that
multiprocessing.cpu_count works on default installs of MacOSX.
- Issue #11501: disutils.archive_utils.make_zipfile no longer fails if zlib is
not installed. Instead, the zipfile.ZIP_STORED compression is used to create
the ZipFile. Patch by Natalia B. Bidart.
- Issue #11554: Fixed support for Japanese codecs; previously the body output
encoding was not done if euc-jp or shift-jis was specified as the charset.
- Issue #11500: Fixed a bug in the os x proxy bypass code for fully qualified IP
addresses in the proxy exception list.
- Issue #11491: dbm.error is no longer raised when dbm.open is called with the
"n" as the flag argument and the file exists. The behavior matches the
documentation and general logic.
- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus operations
when the rounding mode is ROUND_FLOOR.
- Issue #5622: Fix curses.wrapper to raise correct exception if curses
initialization fails.
- Issue #11391: Writing to a mmap object created with
``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a
TypeError. Patch by Charles-François Natali.
- Issue #11306: mailbox in certain cases adapts to an inability to open certain
files in read-write mode. Previously it detected this by checking for EACCES,
now it also checks for EROFS.
- Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors on
accept(), send() and recv().
- Issue #11326: Add the missing connect_ex() implementation for SSL sockets,
and make it work for non-blocking connects.
- Issue #7322: Trying to read from a socket's file-like object after a timeout
occurred now raises an error instead of silently losing data.
- Issue #10956: Buffered I/O classes retry reading or writing after a signal
has arrived and the handler returned successfully.
- Issue #11224: Fixed a regression in tarfile that affected the file-like
objects returned by TarFile.extractfile() regarding performance, memory
consumption and failures with the stream interface.
- Issue #11074: Make 'tokenize' so it can be reloaded.
- Issue #4681: Allow mmap() to work on file sizes and offsets larger than
4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for
32-bit Windows.
- Issue #11089: Fix performance issue limiting the use of ConfigParser()
with large config files.
- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
larger than 4GB. Patch by Nadeem Vawda.
- Issue #9348: Raise an early error if argparse nargs and metavar don't match.
- Issue #8982: Improve the documentation for the argparse Namespace object.
- Issue #9343: Document that argparse parent parsers must be configured before
their children.
- Issue #9026: Fix order of argparse sub-commands in help messages.
- Issue #9347: Fix formatting for tuples in argparse type= error messages.
Build
-----
- Issue #11411: Fix 'make DESTDIR=' with a relative destination.
- Issue #11268: Prevent Mac OS X Installer failure if Documentation package had
previously been installed.
IDLE
----
- Issue #11718: IDLE's open module dialog couldn't find the __init__.py file in
a package.
Tools/Demos
-----------
- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again.
Extension Modules
-----------------
- Issue #12051: Fix segfault in json.dumps() while encoding highly-nested
objects using the C accelerations.
- Issue #12017: Fix segfault in json.loads() while decoding highly-nested
objects using the C accelerations.
- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set
to an instance of the class.
Tests
-----
- Issue #11873: Change regex in test_compileall to fix occasional failures when
when the randomly generated temporary path happened to match the regex.
- Issue #10914: Add a minimal embedding test to test_capi.
- Issue #11790: Fix sporadic failures in
test_multiprocessing.WithProcessesTestCondition.
- Fix possible "file already exists" error when running the tests in parallel.
- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows
platforms. Patch by Nadeem Vawda.
- Issue #11653: fix -W with -j in regrtest.
- Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov.
- Issue #11578: added test for the timeit module. Patch by Michael Henry.
- Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea.
- Issue #11505: improves test coverage of string.py. Patch by Alicia
Arlen.
- Issue #11548: Improve test coverage of the shutil module. Patch by
Evan Dandrea.
- Issue #11554: Reactivated test_email_codecs.
- Issue #11490: test_subprocess:test_leaking_fds_on_error no longer gives a
false positive if the last directory in the path is inaccessible.
- Issue #11223: Fix test_threadsignals to fail, not hang, when the
non-semaphore implementation of locks is used under POSIX.
- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by
Pierre Quentel.
- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions.
Patch by Hirokazu Yamamoto.
- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due
to open door files.
Documentation
-------------
- Issue #11818: Fix tempfile examples for Python 3.
What's New in Python 3.2?
=========================
*Release date: 20-Feb-2011*
Core and Builtins
-----------------
- Issue #11249: Fix potential crashes when using the limited API.
Build
-----
- Issue #11222: Fix non-framework shared library build on Mac OS X.
- Issue #11184: Fix large-file support on AIX.
- Issue #941346: Fix broken shared library build on AIX.
Documentation
-------------
- Issue #10709: Add updated AIX notes in Misc/README.AIX.
What's New in Python 3.2 Release Candidate 3?
=============================================
*Release date: 13-Feb-2011*
Core and Builtins
-----------------
- Issue #11134: Add missing fields to typeslots.h.
- Issue #11135: Remove redundant doc field from PyType_Spec.
- Issue #11067: Add PyType_GetFlags, to support PyUnicode_Check in the limited
ABI.
- Issue #11118: Fix bogus export of None in python3.dll.
Library
-------
- Issue #11116: any error during addition of a message to a mailbox now causes a
rollback, instead of leaving the mailbox partially modified.
- Issue #11132: Fix passing of "optimize" parameter when recursing in
compileall.compile_dir().
- Issue #11110: Fix a potential decref of a NULL in sqlite3.
- Issue #8275: Fix passing of callback arguments with ctypes under Win64. Patch
by Stan Mihai.
Build
-----
- Issue #11079: The /Applications/Python x.x folder created by the Mac OS X
installers now includes a link to the installed documentation and no longer
includes an Extras directory. The Tools directory is now installed in the
framework under share/doc.
- Issue #11121: Fix building with --enable-shared.
Tests
-----
- Issue #10971: test_zipimport_support is once again compatible with the refleak
hunter feature of test.regrtest.
What's New in Python 3.2 Release Candidate 2?
=============================================
*Release date: 30-Jan-2011*
Core and Builtins
-----------------
- Issue #10451: memoryview objects could allow to mutate a readable buffer.
Initial patch by Ross Lagerwall.
Library
-------
- Issue #9124: mailbox now accepts binary input and reads and writes mailbox
files in binary mode, using the email package's binary support to parse
arbitrary email messages. StringIO and text file input is deprecated,
and string input fails early if non-ASCII characters are used, where
previously it would fail when the email was processed in a later step.
- Issue #10845: Mitigate the incompatibility between the multiprocessing
module on Windows and the use of package, zipfile or directory execution
by special casing main modules that actually *are* called __main__.py.
- Issue #11045: Protect logging call against None argument.
- Issue #11052: Correct IDLE menu accelerators on Mac OS X for Save
commands.
- Issue #11053: Fix IDLE "Syntax Error" windows to behave as in 2.x,
preventing a confusing hung appearance on OS X with the windows
obscured.
- Issue #10940: Workaround an IDLE hang on Mac OS X 10.6 when using the
menu accelerators for Open Module, Go to Line, and New Indent Width.
The accelerators still work but no longer appear in the menu items.
- Issue #10989: Fix a crash on SSLContext.load_verify_locations(None, True).
- Issue #11020: Command-line pyclbr was broken because of missing 2-to-3
conversion.
- Issue #11019: Fixed BytesGenerator so that it correctly handles a Message
with a None body.
- Issue #11014: Make 'filter' argument in tarfile.Tarfile.add() into a
keyword-only argument. The preceding positional argument was deprecated,
so it made no sense to add filter as a positional argument.
- Issue #11004: Repaired edge case in deque.count().
- Issue #10974: IDLE no longer crashes if its recent files list includes files
with non-ASCII characters in their path names.
- Have hashlib.algorithms_available and hashlib.algorithms_guaranteed both
return sets instead of one returning a tuple and the other a frozenset.
- Issue #10987: Fix the recursion limit handling in the _pickle module.
- Issue #10983: Fix several bugs making tunnel requests in http.client.
- Issue #10955: zipimport uses ASCII encoding instead of cp437 to decode
filenames, at bootstrap, if the codec registry is not ready yet. It is still
possible to have non-ASCII filenames using the Unicode flag (UTF-8 encoding)
for all file entries in the ZIP file.
- Issue #10949: Improved robustness of rotating file handlers.
- Issue #10955: Fix a potential crash when trying to mmap() a file past its
length. Initial patch by Ross Lagerwall.
- Issue #10898: Allow compiling the posix module when the C library defines
a symbol named FSTAT.
- Issue #10980: the HTTP server now encodes headers with iso-8859-1 (latin1)
encoding. This is the preferred encoding of PEP 3333 and the base encoding
of HTTP 1.1.
- To match the behaviour of HTTP server, the HTTP client library now also
encodes headers with iso-8859-1 (latin1) encoding. It was already doing
that for incoming headers which makes this behaviour now consistent in
both incoming and outgoing direction.
- Issue #9509: argparse now properly handles IOErrors raised by
argparse.FileType.
- Issue #10961: The new pydoc server now better handles exceptions raised
during request handling.
- Issue #10680: Fix mutually exclusive arguments for argument groups in
argparse.
Build
-----
- Issue #11054: Allow Mac OS X installer builds to again work on 10.5 with
the system-provided Python.
What's New in Python 3.2 Release Candidate 1
============================================
*Release date: 16-Jan-2011*
Core and Builtins
-----------------
- Issue #10889: range indexing and slicing now works correctly on ranges with
a length that exceeds sys.maxsize.
- Issue #10892: Don't segfault when trying to delete __abstractmethods__ from a
class.
- Issue #8020: Avoid a crash where the small objects allocator would read
non-Python managed memory while it is being modified by another thread. Patch
by Matt Bandy.
- Issue #10841: On Windows, set the binary mode on stdin, stdout, stderr and all
io.FileIO objects (to not translate newlines, \r\n <=> \n). The Python parser
translates newlines (\r\n => \n).
- Remove buffer API from stable ABI for now, see #10181.
- Issue #8651: PyArg_Parse*() functions raise an OverflowError if the file
doesn't have PY_SSIZE_T_CLEAN define and the size doesn't fit in an int
(length bigger than 2^31-1 bytes).
- Issue #9015, #9611: FileIO.readinto(), FileIO.write(), os.write() and
stdprinter.write() clamp the length to INT_MAX on Windows.
- Issue #8278: On Windows and with a NTFS filesystem, os.stat() and os.utime()
can now handle dates after 2038.
- Issue #10780: PyErr_SetFromWindowsErrWithFilename() and
PyErr_SetExcFromWindowsErrWithFilename() decode the filename from the
filesystem encoding instead of UTF-8.
- Issue #10779: PyErr_WarnExplicit() decodes the filename from the filesystem
encoding instead of UTF-8.
- Add sys.flags attribute for the new -q command-line option.
- Issue #11506: Trying to assign to a bytes literal should result in a
SyntaxError.
Library
-------
- Issue #10916: mmap should not segfault when a file is mapped using 0 as length
and a non-zero offset, and an attempt to read past the end of file is made
(IndexError is raised instead). Patch by Ross Lagerwall.
- Issue #10154, #10090: change the normalization of UTF-8 to "UTF-8" instead
of "UTF8" in the locale module as the latter is not supported MacOSX and OpenBSD.
- Issue #10684: shutil.move used to delete a folder on case insensitive
filesystems when the source and destination name where the same except
for the case.
- Issue #10907: Warn OS X 10.6 IDLE users to use ActiveState Tcl/Tk 8.5, rather
than the currently problematic Apple-supplied one, when running with the
64-/32-bit installer variant.
- Issue #4953: cgi.FieldStorage and cgi.parse() parse the request as bytes, not
as unicode, and accept binary files. Add encoding and errors attributes to
cgi.FieldStorage. Patch written by Pierre Quentel (with many inputs by Glenn
Linderman).
- Add encoding and errors arguments to urllib.parse_qs() and urllib.parse_qsl().
- Issue #10899: No function type annotations in the standard library. Removed
function type annotations from _pyio.py.
- Issue #10875: Update Regular Expression HOWTO; patch by 'SilentGhost'.
- Issue #10872: The repr() of TextIOWrapper objects now includes the mode
if available.
- Issue #10869: Fixed bug where ast.increment_lineno modified the root node
twice.
- Issue #5871: email.header.Header.encode now raises an error if any
continuation line in the formatted value has no leading white space and looks
like a header. Since Generator uses Header to format all headers, this check
is made for all headers in any serialized message at serialization time. This
provides protection against header injection attacks.
- Issue #10859: Make ``contextlib.GeneratorContextManager`` officially
private by renaming it to ``_GeneratorContextManager``.
- Issue #10042: Fixed the total_ordering decorator to handle cross-type
comparisons that could lead to infinite recursion.
- Issue #10686: the email package now :rfc:`2047`\ -encodes headers with
non-ASCII bytes (parsed by a BytesParser) when doing conversion to 7bit-clean
presentation, instead of replacing them with ?s.
- email.header.Header was incorrectly encoding folding whitespace when
rfc2047-encoding header values with embedded newlines, leaving them without
folding whitespace. It now uses the continuation_ws, as it does for
continuation lines that it creates itself.
- Issue #1777412, #10827: Changed the rules for 2-digit years. The
time.asctime(), time.ctime() and time.strftime() functions will now format
any year when ``time.accept2dyear`` is False and will accept years >= 1000
otherwise. ``time.mktime`` and ``time.strftime`` now accept full range
supported by the OS. With Visual Studio or on Solaris, the year is limited to
the range [1; 9999]. Conversion of 2-digit years to 4-digit is deprecated.
- Issue #7858: Raise an error properly when os.utime() fails under Windows
on an existing file.
- Issue #3839: wsgiref should not override a Content-Length header set by
the application. Initial patch by Clovis Fabricio.
- Issue #10492: bdb.Bdb.run() only traces the execution of the code, not the
compilation (if the input is a string).
- Issue #7995: When calling accept() on a socket with a timeout, the returned
socket is now always blocking, regardless of the operating system.
- Issue #10756: atexit normalizes the exception before displaying it. Patch by
Andreas Stührk.
- Issue #10790: email.header.Header.append's charset logic now works correctly
for charsets whose output codec is different from its input codec.
- Issue #10819: SocketIO.name property returns -1 when its closed, instead of
raising a ValueError, to fix repr().
- Issue #8650: zlib.compress() and zlib.decompress() raise an OverflowError if
the input buffer length doesn't fit into an unsigned int (length bigger than
2^32-1 bytes).
- Issue #6643: Reinitialize locks held within the threading module after fork to
avoid a potential rare deadlock or crash on some platforms.
- Issue #10806, issue #9905: Fix subprocess pipes when some of the standard file
descriptors (0, 1, 2) are closed in the parent process. Initial patch by Ross
Lagerwall.
- `unittest.TestCase` can be instantiated without a method name; for simpler
exploration from the interactive interpreter.
- Issue #10798: Reject supporting concurrent.futures if the system has too
few POSIX semaphores.
- Issue #10807: Remove base64, bz2, hex, quopri, rot13, uu and zlib codecs from
the codec aliases. They are still accessible via codecs.lookup().
- Issue #10801: In zipfile, support different encodings for the header and the
filenames.
- Issue #6285: IDLE no longer crashes on missing help file; patch by Scott
David Daniels.
- Fix collections.OrderedDict.setdefault() so that it works in subclasses that
define __missing__().
- Issue #10786: unittest.TextTestRunner default stream no longer bound at import
time. `sys.stderr` now looked up at instantiation time. Fix contributed by
Mark Roddy.
- Issue #10753: Characters ';', '=' and ',' in the PATH_INFO environment variable
won't be quoted when the URI is constructed by the wsgiref.util's request_uri
method. According to RFC 3986, these characters can be a part of params in
PATH component of URI and need not be quoted.
- Issue #10738: Fix webbrowser.Opera.raise_opts.
- Issue #9824: SimpleCookie now encodes , and ; in values to cater to how
browsers actually parse cookies.
- Issue #9333: os.symlink now available regardless of user privileges. The
function now raises OSError on Windows >=6.0 when the user is unable to create
symbolic links. XP and 2003 still raise NotImplementedError.
- Issue #10783: struct.pack() no longer implicitly encodes unicode to UTF-8.
- Issue #10730: Add SVG mime types to mimetypes module.
- Issue #10768: Make the Tkinter ScrolledText widget work again.
- Issue #10777: Fix "dictionary changed size during iteration" bug in
ElementTree register_namespace().
- Issue #10626: test_logging now preserves logger disabled states.
- Issue #10774: test_logging now removes temp files created during tests.
- Issue #5258/#10642: if site.py encounters a .pth file that generates an error,
it now prints the filename, line number, and traceback to stderr and skips
the rest of that individual file, instead of stopping processing entirely.
- Issue #10763: subprocess.communicate() closes stdout and stderr if both are
pipes (bug specific to Windows).
- Issue #1693546: fix email.message RFC 2231 parameter encoding to be in better
compliance (no "s around encoded values).
- Improved the diff message in the unittest module's assertCountEqual().
- Issue #1155362: email.utils.parsedate_tz now handles a missing space before
the '-' of a timezone field as well as before a '+'.
- Issue #4871: The zipfile module now gives a more useful error message if
an attempt is made to use a string to specify the archive password.
- Issue #10750: The ``raw`` attribute of buffered IO objects is now read-only.
- Deprecated assertDictContainsSubset() in the unittest module.
C-API
-----
- Issue #10913: Deprecate misleading functions PyEval_AcquireLock() and
PyEval_ReleaseLock(). The thread-state aware APIs should be used instead.
- Issue #10333: Remove ancient GC API, which has been deprecated since Python
2.2.
Build
-----
- Issue #10843: Update third-party library versions used in OS X 32-bit
installer builds: bzip2 1.0.6, readline 6.1.2, SQLite 3.7.4 (with FTS3/FTS4
and RTREE enabled), and ncursesw 5.5 (wide-char support enabled).
- Issue #10820: Fix OS X framework installs to support version-specific
scripts (#10679).
- Issue #7716: Under Solaris, don't assume existence of /usr/xpg4/bin/grep in
the configure script but use $GREP instead. Patch by Fabian Groffen.
- Issue #10475: Don't hardcode compilers for LDSHARED/LDCXXSHARED on NetBSD
and DragonFly BSD. Patch by Nicolas Joly.
- Issue #10679: The "idle", "pydoc" and "2to3" scripts are now installed with
a version-specific suffix on "make altinstall".
- Issue #10655: Fix the build on PowerPC on Linux with GCC when building with
timestamp profiling (--with-tsc): the preprocessor test for the PowerPC
support now looks for "__powerpc__" as well as "__ppc__": the latter seems to
only be present on OS X; the former is the correct one for Linux with GCC.
- Issue #1099: Fix the build on MacOSX when building a framework with pydebug
using GCC 4.0.
Tools/Demos
-----------
- Issue #10843: Install the Tools directory on OS X in the applications Extras
(/Applications/Python 3.n/Extras/) where the Demo directory had previous been
installed.
- Issue #7962: The Demo directory is gone. Most of the old and unmaintained
demos have been removed, others integrated in documentation or a new
Tools/demo subdirectory.
- Issue #10502: Addition of the unittestgui tool. Originally by Steve Purcell.
Updated for test discovery by Mark Roddy and Python 3 compatibility by Brian
Curtin.
Tests
-----
- Fix test_startfile to wait for child process to terminate before finishing.
- Issue #10822: Fix test_posix:test_getgroups failure under Solaris. Patch
by Ross Lagerwall.
- Make the --coverage flag work for test.regrtest.
- Issue #1677694: Refactor and improve test_timeout. Original patch by
Björn Lindqvist.
- Issue #5485: Add tests for the UseForeignDTD method of expat parser objects.
Patch by Jean-Paul Calderone and Sandro Tosi.
- Issue #6293: Have regrtest.py echo back sys.flags. This is done by default in
whole runs and enabled selectively using ``--header`` when running an explicit
list of tests. Original patch by Collin Winter.
What's New in Python 3.2 Beta 2?
================================
*Release date: 19-Dec-2010*
Core and Builtins
-----------------
- Issue #8844: Regular and recursive lock acquisitions can now be interrupted
by signals on platforms using pthreads. Patch by Reid Kleckner.
- Issue #4236: PyModule_Create2 now checks the import machinery directly
rather than the Py_IsInitialized flag, avoiding a Fatal Python
error in certain circumstances when an import is done in __del__.
- Issue #5587: add a repr to dict_proxy objects. Patch by David Stanek and
Daniel Urban.
Library
-------
- Issue #3243: Support iterable bodies in httplib. Patch Contributions by
Xuanji Li and Chris AtLee.
- Issue #10611: SystemExit exception will no longer kill a unittest run.
- Issue #9857: It is now possible to skip a test in a setUp, tearDown or clean
up function.
- Issue #10573: use actual/expected consistently in unittest methods.
The order of the args of assertCountEqual is also changed.
- Issue #9286: email.utils.parseaddr no longer concatenates blank-separated
words in the local part of email addresses, thereby preserving the input.
- Issue #6791: Limit header line length (to 65535 bytes) in http.client
and http.server, to avoid denial of services from the other party.
- Issue #10404: Use ctl-button-1 on OSX for the context menu in Idle.
- Issue #9907: Fix tab handling on OSX when using editline by calling
rl_initialize first, then setting our custom defaults, then reading .editrc.
- Issue #4188: Avoid creating dummy thread objects when logging operations
from the threading module (with the internal verbose flag activated).
- Issue #10711: Remove HTTP 0.9 support from http.client. The ``strict``
parameter to HTTPConnection and friends is deprecated.
- Issue #9721: Fix the behavior of urljoin when the relative url starts with a
';' character. Patch by Wes Chow.
- Issue #10714: Limit length of incoming request in http.server to 65536 bytes
for security reasons. Initial patch by Ross Lagerwall.
- Issue #9558: Fix distutils.command.build_ext with VS 8.0.
- Issue #10667: Fast path for collections.Counter().
- Issue #10695: passing the port as a string value to telnetlib no longer
causes debug mode to fail.
- Issue #1078919: add_header now automatically RFC2231 encodes parameters
that contain non-ascii values.
- Issue #10188 (partial resolution): tempfile.TemporaryDirectory emits
a warning on sys.stderr rather than throwing a misleading exception
if cleanup fails due to nulling out of modules during shutdown.
Also avoids an AttributeError when mkdtemp call fails and issues
a ResourceWarning on implicit cleanup via __del__.
- Issue #10107: Warn about unsaved files in IDLE on OSX.
- Issue #7213: subprocess.Popen's default for close_fds has been changed.
It is now True in most cases other than on Windows when input, output or
error handles are provided.
- Issue #6559: subprocess.Popen has a new pass_fds parameter (actually
added in 3.2beta1) to allow specifying a specific list of file descriptors
to keep open in the child process.
- Issue #1731717: Fixed the problem where subprocess.wait() could cause an
OSError exception when The OS had been told to ignore SIGCLD in our process
or otherwise not wait for exiting child processes.
Tests
-----
- Issue #775964: test_grp now skips YP/NIS entries instead of failing when
encountering them.
Tools/Demos
-----------
- Issue #6075: IDLE on Mac OS X now works with both Carbon AquaTk and
Cocoa AquaTk.
- Issue #10710: ``Misc/setuid-prog.c`` is removed from the source tree.
- Issue #10706: Remove outdated script runtests.sh. Either ``make test``
or ``python -m test`` should be used instead.
Build
-----
- The Windows build now uses Tcl/Tk 8.5.9 and sqlite3 3.7.4.
- Issue #9234: argparse supports alias names for subparsers.
What's New in Python 3.2 Beta 1?
================================
*Release date: 05-Dec-2010*
Core and Builtins
-----------------
- Issue #10630: Return dict views from the dict proxy keys()/values()/items()
methods.
- Issue #10596: Fix float.__mod__ to have the same behaviour as float.__divmod__
with respect to signed zeros. -4.0 % 4.0 should be 0.0, not -0.0.
- Issue #1772833: Add the -q command-line option to suppress copyright and
version output in interactive mode.
- Provide an *optimize* parameter in the built-in compile() function.
- Fixed several corner case issues on Windows in os.stat/os.lstat related to
reparse points.
- PEP 384 (Defining a Stable ABI) is implemented.
- Issue #2690: Range objects support negative indices and slicing.
- Issue #9915: Speed up sorting with a key.
- Issue #8685: Speed up set difference ``a - b`` when source set ``a`` is much
larger than operand ``b``. Patch by Andrew Bennetts.
- Issue #10518: Bring back the callable() builtin.
- Issue #7094: Added alternate formatting (specified by '#') to ``__format__``
method of float, complex, and Decimal. This allows more precise control over
when decimal points are displayed.
- Issue #10474: range.count() should return integers.
- Issue #1574217: isinstance now catches only AttributeError, rather than
masking all errors.
Library
-------
- logging: added "handler of last resort". See http://bit.ly/last-resort-handler
- test.support: Added TestHandler and Matcher classes for better support of
assertions about logging.
- Issue #4391: Use proper plural forms in argparse.
- Issue #10601: sys.displayhook uses 'backslashreplace' error handler on
UnicodeEncodeError.
- Add the "display" and "undisplay" pdb commands.
- Issue #7245: Add a SIGINT handler in pdb that allows to break a program again
after a "continue" command.
- Add the "interact" pdb command.
- Issue #7905: Actually respect the keyencoding parameter to shelve.Shelf.
- Issue #1569291: Speed up array.repeat().
- Provide an interface to set the optimization level of compilation in
py_compile, compileall and zipfile.PyZipFile.
- Issue #7904: Changes to urllib.parse.urlsplit to handle schemes as defined by
RFC3986. Anything before :// is considered a scheme and is followed by an
authority (or netloc) and by '/' led path, which is optional.
- Issue #6045: dbm.gnu databases now support get() and setdefault() methods.
- Issue #10620: `python -m unittest` can accept file paths instead of module
names for running specific tests.
- Issue #9424: Deprecate the `unittest.TestCase` methods `assertEquals`,
`assertNotEquals`, `assertAlmostEquals`, `assertNotAlmostEquals` and `assert_`
and replace them with the correct methods in the Python test suite.
- Issue #10272: The ssl module now raises socket.timeout instead of a generic
SSLError on socket timeouts.
- Issue #10528: Allow translators to reorder placeholders in localizable
messages from argparse.
- Issue #10497: Fix incorrect use of gettext in argparse.
- Issue #10478: Reentrant calls inside buffered IO objects (for example by
way of a signal handler) now raise a RuntimeError instead of freezing the
current process.
- logging: Added getLogRecordFactory/setLogRecordFactory with docs and tests.
- Issue #10549: Fix pydoc traceback when text-documenting certain classes.
- Issue #2001: New HTML server with enhanced Web page features. Patch by Ron
Adam.
- Issue #10360: In WeakSet, do not raise TypeErrors when testing for membership
of non-weakrefable objects.
- Issue #940286: pydoc.Helper.help() ignores input/output init parameters.
- Issue #1745035: Add a command size and data size limit to smtpd.py, to prevent
DoS attacks. Patch by Savio Sena.
- Issue #4925: Add filename to error message when executable can't be found in
subprocess.
- Issue #10391: Don't dereference invalid memory in error messages in the ast
module.
- Issue #10027: st_nlink was not being set on Windows calls to os.stat or
os.lstat. Patch by Hirokazu Yamamoto.
- Issue #9333: Expose os.symlink only when the SeCreateSymbolicLinkPrivilege is
held by the user's account, i.e., when the function can actually be used.
- Issue #8879: Add os.link support for Windows.
- Issue #7911: ``unittest.TestCase.longMessage`` defaults to True for improved
failure messages by default. Patch by Mark Roddy.
- Issue #1486713: HTMLParser now has an optional tolerant mode where it tries to
guess at the correct parsing of invalid html.
- Issue #10554: Add context manager support to subprocess.Popen objects.
- Issue #8989: email.utils.make_msgid now has a domain parameter that can
override the domain name used in the generated msgid.
- Issue #9299: Add exist_ok parameter to os.makedirs to suppress the 'File
exists' exception when a target directory already exists with the specified
mode. Patch by Ray Allen.
- Issue #9573: os.fork() now works correctly when triggered as a side effect of
a module import.
- Issue #10464: netrc now correctly handles lines with embedded '#' characters.
- Added itertools.accumulate().
- Issue #4113: Added custom ``__repr__`` method to ``functools.partial``.
Original patch by Daniel Urban.
- Issue #10273: Rename `assertRegexpMatches` and `assertRaisesRegexp` to
`assertRegex` and `assertRaisesRegex`.
- Issue #10535: Enable silenced warnings in unittest by default.
- Issue #9873: The URL parsing functions in urllib.parse now accept ASCII byte
sequences as input in addition to character strings.
- Issue #10586: The statistics API for the new functools.lru_cache has been
changed to a single cache_info() method returning a named tuple.
- Issue #10323: itertools.islice() now consumes the minimum number of inputs
before stopping. Formerly, the final state of the underlying iterator was
undefined.
- Issue #10565: The collections.Iterator ABC now checks for both __iter__ and
__next__.
- Issue #10242: Fixed implementation of unittest.ItemsEqual and gave it a new
more informative name, unittest.CountEqual.
- Issue #10561: In pdb, clear the breakpoints by the breakpoint number.
- 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 #10534: in difflib, expose bjunk and bpopular sets; deprecate
undocumented and now redundant isbjunk and isbpopular methods.
- Issue #9846: zipfile is now correctly closing underlying file objects.
- Issue #10459: Update CJK character names to Unicode 6.0.
- Issue #4493: urllib.request adds '/' in front of path components which does not
start with '/. Common behavior exhibited by browsers and other clients.
- Issue #6378: idle.bat now runs with the appropriate Python version rather than
the system default. Patch by Sridhar Ratnakumar.
- Issue #10470: 'python -m unittest' will now run test discovery by default,
when no extra arguments have been provided.
- Issue #3709: BaseHTTPRequestHandler will buffer the headers and write to
output stream only when end_headers is invoked. This is a speedup and an
internal optimization. Patch by endian.
- Issue #10220: Added inspect.getgeneratorstate. Initial patch by Rodolpho
Eckhardt.
- Issue #10453: compileall now uses argparse instead of getopt, and thus
provides clean output when called with '-h'.
- Issue #8078: Add constants for higher baud rates in the termios module. Patch
by Rodolpho Eckhardt.
- Issue #10407: Fix two NameErrors in distutils.
- Issue #10371: Deprecated undocumented functions in the trace module.
- Issue #10467: Fix BytesIO.readinto() after seeking into a position after the
end of the file.
- configparser: 100% test coverage.
- Issue #10499: configparser supports pluggable interpolation handlers. The
default classic interpolation handler is called BasicInterpolation. Another
interpolation handler added (ExtendedInterpolation) which supports the syntax
used by zc.buildout (e.g. interpolation between sections).
- configparser: the SafeConfigParser class has been renamed to ConfigParser.
The legacy ConfigParser class has been removed but its interpolation mechanism
is still available as LegacyInterpolation.
- configparser: Usage of RawConfigParser is now discouraged for new projects
in favor of ConfigParser(interpolation=None).
- Issue #1682942: configparser supports alternative option/value delimiters.
- Issue #5412: configparser supports mapping protocol access.
- Issue #9411: configparser supports specifying encoding for read operations.
- Issue #9421: configparser's getint(), getfloat() and getboolean() methods
accept vars and default arguments just like get() does.
- Issue #9452: configparser supports reading from strings and dictionaries
(thanks to the mapping protocol API, the latter can be used to copy data
between parsers).
- configparser: accepted INI file structure is now customizable, including
comment prefixes, name of the DEFAULT section, empty lines in multiline
values, and indentation.
- Issue #10326: unittest.TestCase instances can be pickled.
- Issue #9926: Wrapped TestSuite subclass does not get __call__ executed.
- Issue #9920: Skip tests for cmath.atan and cmath.atanh applied to complex
zeros on systems where the log1p function fails to respect the sign of zero.
This fixes a test failure on AIX.
- Issue #9732: Addition of getattr_static to the inspect module.
- Issue #10446: Module documentation generated by pydoc now links to a
version-specific online reference manual.
- Make the 'No module named' exception message from importlib consistent.
- Issue #10443: Add the SSLContext.set_default_verify_paths() method.
- Issue #10440: Support RUSAGE_THREAD as a constant in the resource module.
Patch by Robert Collins.
- Issue #10429: IMAP.starttls() stored the capabilities as bytes objects, rather
than strings.
C-API
-----
- Issue #10557: Added a new API function, PyUnicode_TransformDecimalToASCII(),
which transforms non-ASCII decimal digits in a Unicode string to their ASCII
equivalents.
- Issue #9518: Extend the PyModuleDef_HEAD_INIT macro to explicitly
zero-initialize all fields, fixing compiler warnings seen when building
extension modules with gcc with "-Wmissing-field-initializers" (implied by
"-W").
- Issue #10255: Fix reference leak in Py_InitializeEx(). Patch by Neil
Schemenauer.
- structseq.h is now included in Python.h.
- Loosen PyArg_ValidateKeywordArguments to allow dict subclasses.
Tests
-----
- regrtest.py once again ensures the test directory is removed from sys.path
when it is invoked directly as the __main__ module.
- `python -m test` can be used to run the test suite as well as `python -m
test.regrtest`.
- Do not fail test_socket when the IP address of the local hostname cannot be
looked up.
- Issue #8886: Use context managers throughout test_zipfile. Patch by Eric
Carstensen.
Build
-----
- Issue #10325: Fix two issues in the fallback definitions for PY_ULLONG_MAX and
PY_LLONG_MAX that made them unsuitable for use in preprocessor conditionals.
Documentation
-------------
- Issue #10299: List the built-in functions in a table in functions.rst.
What's New in Python 3.2 Alpha 4?
=================================
*Release date: 13-Nov-2010*
Core and Builtins
-----------------
- Issue #10372: Import the warnings module only after the IO library is
initialized, so as to avoid bootstrap issues with the '-W' option.
- Issue #10293: Remove obsolete field in the PyMemoryView structure, unused
undocumented value PyBUF_SHADOW, and strangely-looking code in
PyMemoryView_GetContiguous.
- Issue #6081: Add str.format_map(), similar to ``str.format(**mapping)``.
- If FileIO.__init__ fails, close the file descriptor.
- 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 #5437: A preallocated MemoryError instance should not keep traceback
data (including local variables caught in the stack trace) alive infinitely.
- Issue #10186: Fix the SyntaxError caret when the offset is equal to the length
of the offending line.
- Issue #10089: Add support for arbitrary -X options on the command line. They
can be retrieved through a new attribute ``sys._xoptions``.
- Issue #4388: On Mac OS X, decode command line arguments from UTF-8, instead of
the locale encoding. If the LANG (and LC_ALL and LC_CTYPE) environment
variable is not set, the locale encoding is ISO-8859-1, whereas most programs
(including Python) expect UTF-8. Python already uses UTF-8 for the filesystem
encoding and to encode command line arguments on this OS.
- Issue #9713, #10114: Parser functions (e.g. PyParser_ASTFromFile) expect
filenames encoded to the filesystem encoding with the surrogateescape error
handler (to support undecodable bytes), instead of UTF-8 in strict mode.
- 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.
- Use locale encoding instead of UTF-8 to encode and decode filenames if
Py_FileSystemDefaultEncoding is not set.
- Issue #10095: fp_setreadl() doesn't reopen the file, instead reuse the file
descriptor.
- Issue #9418: Moved private string methods ``_formatter_parser`` and
``_formatter_field_name_split`` into a new ``_string`` module.
- Issue #9992: Remove PYTHONFSENCODING environment variable.
Library
-------
- Issue #10465: fix broken delegating of attributes by gzip._PaddedFile.
- Issue #10356: Decimal.__hash__(-1) should return -2.
- Issue #1553375: logging: Added stack_info kwarg to display stack information.
- Issue #5111: IPv6 Host in the Header is wrapped inside [ ]. Patch by Chandru.
- Fix Fraction.__hash__ so that Fraction.__hash__(-1) is -2. (See also issue
#10356.)
- Issue #4471: Add the IMAP.starttls() method to enable encryption on standard
IMAP4 connections. Original patch by Lorenzo M. Catucci.
- Issue #1466065: Add 'validate' option to base64.b64decode to raise an error if
there are non-base64 alphabet characters in the input.
- Issue #10386: Add __all__ to token module; this simplifies importing in
tokenize module and prevents leaking of private names through ``import *``.
- Issue #4471: Properly shutdown socket in IMAP.shutdown(). Patch by Lorenzo
M. Catucci.
- Fix IMAP.login() to work properly.
- Issue #9244: multiprocessing pool worker processes could terminate
unexpectedly if the return value of a task could not be pickled. Only the
``repr`` of such errors are now sent back, wrapped in an
``MaybeEncodingError`` exception.
- Issue #9244: The ``apply_async()`` and ``map_async()`` methods of
``multiprocessing.Pool`` now accepts a ``error_callback`` argument. This can
be a callback with the signature ``callback(exc)``, which will be called if
the target raises an exception.
- Issue #10022: The dictionary returned by the ``getpeercert()`` method of SSL
sockets now has additional items such as ``issuer`` and ``notBefore``.
- ``usenetrc`` is now false by default for NNTP objects.
- Issue #1926: Add support for NNTP over SSL on port 563, as well as STARTTLS.
Patch by Andrew Vant.
- Issue #10335: Add tokenize.open(), detect the file encoding using
tokenize.detect_encoding() and open it in read only mode.
- Issue #10321: Add support for binary data to smtplib.SMTP.sendmail, and a new
method send_message to send an email.message.Message object.
- Issue #6011: sysconfig and distutils.sysconfig use the surrogateescape error
handler to parse the Makefile file. Avoid a UnicodeDecodeError if the source
code directory name contains a non-ASCII character and the locale encoding is
ASCII.
- Issue #10329: The trace module writes reports using the input Python script
encoding, instead of the locale encoding. Patch written by Alexander
Belopolsky.
- Issue #10126: Fix distutils' test_build when Python was built with
--enable-shared.
- 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 #10180: Pickling file objects is now explicitly forbidden, since
unpickling them produced nonsensical results.
- Issue #10311: The signal module now restores errno before returning from its
low-level signal handler. Patch by Hallvard B Furuseth.
- Issue #10282: Add a ``nntp_implementation`` attribute to NNTP objects.
- Issue #10283: Add a ``group_pattern`` argument to NNTP.list().
- Issue #10155: Add IISCGIHandler to wsgiref.handlers to support IIS CGI
environment better, and to correct unicode environment values for WSGI 1.0.1.
- Issue #10281: nntplib now returns None for absent fields in the OVER/XOVER
response, instead of raising an exception.
- wsgiref now implements and validates PEP 3333, rather than an experimental
extension of PEP 333. (Note: earlier versions of Python 3.x may have
incorrectly validated some non-compliant applications as WSGI compliant; if
your app validates with Python <3.2b1+, but not on this version, it is likely
the case that your app was not compliant.)
- Issue #10280: NNTP.nntp_version should reflect the highest version advertised
by the server.
- Issue #10184: Touch directories only once when extracting a tarfile.
- Issue #10199: New package, ``turtledemo`` now contains selected demo scripts
that were formerly found under Demo/turtle.
- Issue #10265: Close file objects explicitly in sunau. Patch by Brian Brazil.
- Issue #10266: uu.decode didn't close in_file explicitly when it was given as a
filename. Patch by Brian Brazil.
- Issue #10110: Queue objects didn't recognize full queues when the maxsize
parameter had been reduced.
- Issue #10160: Speed up operator.attrgetter. Patch by Christos Georgiou.
- logging: Added style option to basicConfig() to allow %, {} or $-formatting.
- Issue #5729: json.dumps() now supports using a string such as '\t' for
pretty-printing multilevel objects.
- Issue #10253: FileIO leaks a file descriptor when trying to open a file for
append that isn't seekable. Patch by Brian Brazil.
- Support context manager protocol for file-like objects returned by mailbox
``get_file()`` methods.
- Issue #10246: uu.encode didn't close file objects explicitly when filenames
were given to it. Patch by Brian Brazil.
- Issue #10198: fix duplicate header written to wave files when writeframes() is
called without data.
- Close file objects in modulefinder in a timely manner.
- Close a io.TextIOWrapper object in email.parser in a timely manner.
- Close a file object in distutils.sysconfig in a timely manner.
- Close a file object in pkgutil in a timely manner.
- Issue #10233: Close file objects in a timely manner in the tarfile module and
its test suite.
- Issue #10093: ResourceWarnings are now issued when files and sockets are
deallocated without explicit closing. These warnings are silenced by default,
except in pydebug mode.
- tarfile.py: Add support for all missing variants of the GNU sparse extensions
and create files with holes when extracting sparse members.
- Issue #10218: Return timeout status from ``Condition.wait`` in threading.
- Issue #7351: Add ``zipfile.BadZipFile`` spelling of the exception name and
deprecate the old name ``zipfile.BadZipfile``.
- 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 #5975: Add csv.unix_dialect class.
- Issue #7761: telnetlib.interact failures on Windows fixed.
- logging: Added style option to Formatter to allow %, {} or $-formatting.
- Issue #5178: Added tempfile.TemporaryDirectory class that can be used as a
context manager.
- Issue #1349106: Generator (and BytesGenerator) flatten method and Header
encode method now support a 'linesep' argument.
- Issue #5639: Add a *server_hostname* argument to ``SSLContext.wrap_socket`` in
order to support the TLS SNI extension. ``HTTPSConnection`` and ``urlopen()``
also use this argument, so that HTTPS virtual hosts are now supported.
- Issue #10166: Avoid recursion in pstats Stats.add() for many stats items.
- Issue #10163: Skip unreadable registry keys during mimetypes initialization.
- logging: Made StreamHandler terminator configurable.
- logging: Allowed filters to be just callables.
- logging: Added tests for _logRecordClass changes.
- Issue #10092: Properly reset locale in calendar.Locale*Calendar classes.
- logging: Added _logRecordClass, getLogRecordClass, setLogRecordClass to
increase flexibility of LogRecord creation.
- Issue #5117: Case normalization was needed on ntpath.relpath(). Also fixed
root directory issue on posixpath.relpath(). (Ported working fixes from
ntpath.)
- Issue #1343: xml.sax.saxutils.XMLGenerator now has an option
short_empty_elements to direct it to use self-closing tags when appropriate.
- Issue #9807 (part 1): Expose the ABI flags in sys.abiflags. Add --abiflags
switch to python-config for command line access.
- Issue #6098: Don't claim DOM level 3 conformance in minidom.
- Issue #5762: Fix AttributeError raised by ``xml.dom.minidom`` when an empty
XML namespace attribute is encountered.
- Issue #2830: Add the ``html.escape()`` function, which quotes all problematic
characters by default. Deprecate ``cgi.escape()``.
- Issue #9409: Fix the regex to match all kind of filenames, for interactive
debugging in doctests.
- Issue #9183: ``datetime.timezone(datetime.timedelta(0))`` will now return the
same instance as ``datetime.timezone.utc``.
- Issue #7523: Add SOCK_CLOEXEC and SOCK_NONBLOCK to the socket module, where
supported by the system. Patch by Nikita Vetoshkin.
- Issue #10063: file:// scheme will stop accessing remote hosts via ftp
protocol. file:// urls had fallback to access remote hosts via ftp. This was
not correct, change is made to raise a URLError when a remote host is tried to
access via file:// scheme.
- Issue #1710703: Write structures for an empty ZIP archive when a ZipFile is
created in modes 'a' or 'w' and then closed without adding any files. Raise
BadZipfile (rather than IOError) when opening small non-ZIP files.
- Issue #10041: The signature of optional arguments in socket.makefile() didn't
match that of io.open(), and they also didn't get forwarded properly to
TextIOWrapper in text mode. Patch by Kai Zhu.
- Issue #9003: http.client.HTTPSConnection, urllib.request.HTTPSHandler and
urllib.request.urlopen now take optional arguments to allow for server
certificate checking, as recommended in public uses of HTTPS.
- 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 #3873: Speed up unpickling from file objects that have a peek() method.
- Issue #10075: Add a session_stats() method to SSLContext objects.
- Issue #9948: Fixed problem of losing filename case information.
Extension Modules
-----------------
- Issue #5109: array.array constructor will now use fast code when
initial data is provided in an array object with correct type.
- Issue #6317: Now winsound.PlaySound only accepts unicode.
- Issue #6317: Now winsound.PlaySound can accept non ascii filename.
- Issue #9377: Use Unicode API for gethostname on Windows.
- Issue #10143: Update "os.pathconf" values.
- Issue #6518: Support context manager protcol for ossaudiodev types.
- Issue #678250: Make mmap flush a noop on ACCESS_READ and ACCESS_COPY.
- Issue #9054: Fix a crash occurring when using the pyexpat module with expat
version 2.0.1.
- Issue #5355: Provide mappings from Expat error numbers to string descriptions
and backwards, in order to actually make it possible to analyze error codes
provided by ExpatError.
- The Unicode database was updated to 6.0.0.
C-API
-----
- Issue #10288: The deprecated family of "char"-handling macros
(ISLOWER()/ISUPPER()/etc) have now been removed: use Py_ISLOWER() etc instead.
- Issue #9778: Hash values are now always the size of pointers. A new Py_hash_t
type has been introduced.
Tools/Demos
-----------
- Issue #10117: Tools/scripts/reindent.py now accepts source files that use
encoding other than ASCII or UTF-8. Source encoding is preserved when
reindented code is written to a file.
- Issue #7287: Demo/imputil/knee.py was removed.
Tests
-----
- Issue #3699: Fix test_bigaddrspace and extend it to test bytestrings as well
as unicode strings. Initial patch by Sandro Tosi.
- Issue #10294: Remove dead code form test_unicode_file.
- Issue #10123: Don't use non-ascii filenames in test_doctest tests. Add a new
test specific to unicode (non-ascii name and filename).
Build
-----
- Issue #10268: Add a --enable-loadable-sqlite-extensions option to configure.
- Issue #8852: Allow the socket module to build on OpenSolaris.
- Drop -OPT:Olimit compiler option.
- Issue #10094: Use versioned .so files on GNU/kfreeBSD and the GNU Hurd.
- Accept Oracle Berkeley DB 5.0 and 5.1 as backend for the dbm extension.
- Issue #7473: avoid link errors when building a framework with a different set
of architectures than the one that is currently installed.
What's New in Python 3.2 Alpha 3?
=================================
*Release date: 09-Oct-2010*
Core and Builtins
-----------------
- 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 #9738: Document PyErr_SetString() and PyErr_SetFromErrnoWithFilename()
encodings.
- ast.literal_eval() can now handle negative numbers. It is also a little more
liberal in what it accepts without compromising the safety of the evaluation.
For example, 3j+4 and 3+4+5 are both accepted.
- Issue #10006: type.__abstractmethods__ now raises an AttributeError. As a
result metaclasses can now be ABCs (see #9533).
- Issue #8670: ctypes.c_wchar supports non-BMP characters with 32 bits wchar_t.
- Issue #8670: PyUnicode_AsWideChar() and PyUnicode_AsWideCharString() replace
UTF-16 surrogate pairs by single non-BMP characters for 16 bits Py_UNICODE and
32 bits wchar_t (eg. Linux in narrow build).
- Issue #10003: Allow handling of SIGBREAK on Windows. Fixes a regression
introduced by issue #9324.
- Issue #9979: Create function PyUnicode_AsWideCharString().
- Issue #7397: Mention that importlib.import_module() is probably what someone
really wants to be using in __import__'s docstring.
- Issue #8521: Allow CreateKeyEx, OpenKeyEx, and DeleteKeyEx functions of winreg
to use named arguments.
- Issue #9930: Remove bogus subtype check that was causing (e.g.)
float.__rdiv__(2.0, 3) to return NotImplemented instead of the expected 1.5.
- Issue #9808: Implement os.getlogin for Windows. Patch by Jon Anglin.
- Issue #9901: Destroying the GIL in Py_Finalize() can fail if some other
threads are still running. Instead, reinitialize the GIL on a second call to
Py_Initialize().
- All SyntaxErrors now have a column offset and therefore a caret when the error
is printed.
- Issue #9252: PyImport_Import no longer uses a fromlist hack to return the
module that was imported, but instead gets the module from sys.modules.
- Issue #9213: The range type_items now provides index() and count() methods, to
conform to the Sequence ABC. Patch by Daniel Urban and Daniel Stutzbach.
- Issue #7994: Issue a PendingDeprecationWarning if object.__format__ is called
with a non-empty format string. This is an effort to future-proof user
code. If a derived class does not currently implement __format__ but later
adds its own __format__, it would most likely break user code that had
supplied a format string. This will be changed to a DeprecationWaring in
Python 3.3 and it will be an error in Python 3.4.
- Issue #9828: Destroy the GIL in Py_Finalize(), so that it gets properly
re-created on a subsequent call to Py_Initialize(). The problem (a crash)
wouldn't appear in 3.1 or 2.7 where the GIL's structure is more trivial.
- Issue #9210: Configure option --with-wctype-functions was removed. Using the
functions from the libc caused the methods .upper() and lower() to become
locale aware and created subtly wrong results.
- Issue #9738: PyUnicode_FromFormat() and PyErr_Format() raise an error on a
non-ASCII byte in the format string.
- Issue #4617: Previously it was illegal to delete a name from the local
namespace if it occurs as a free variable in a nested block. This limitation
of the compiler has been lifted, and a new opcode introduced (DELETE_DEREF).
- Issue #9804: ascii() now always represents unicode surrogate pairs as a single
``\UXXXXXXXX``, regardless of whether the character is printable or not.
Also, the "backslashreplace" error handler now joins surrogate pairs into a
single character on UCS-2 builds.
- Issue #9757: memoryview objects get a release() method to release the
underlying buffer (previously this was only done when deallocating the
memoryview), and gain support for the context management protocol.
- Issue #9797: pystate.c wrongly assumed that zero couldn't be a valid
thread-local storage key.
Library
-------
- Issue #2236: distutils' mkpath ignored the mode parameter.
- 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 #9437: Fix building C extensions with non-default LDFLAGS.
- Issue #4661: email can now parse bytes input and generate either converted
7bit output or bytes output. Email version bumped to 5.1.0.
- Issue #1589: Add ssl.match_hostname(), to help implement server identity
verification for higher-level protocols.
- 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 #6706: asyncore.dispatcher now provides a handle_accepted() method
returning a (sock, addr) pair which is called when a connection has been
established with a new remote endpoint. This is supposed to be used as a
replacement for old handle_accept() and avoids the user to call accept()
directly.
- Issue #9065: tarfile no longer uses "root" as the default for the uname and
gname field.
- Issue #8980: Fixed a failure in distutils.command check that was shadowed by
an environment that does not have docutils. Patch by Arfrever.
- 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 #1491: BaseHTTPServer nows send a ``100 Continue`` response before
sending a 200 OK for the Expect: 100-continue request header.
- Issue #9360: Cleanup and improvements to the nntplib module. The API now
conforms to the philosophy of bytes and unicode separation in Python 3. A
test suite has also been added.
- Issue #9962: GzipFile now has the peek() method.
- Issue #9090: When a socket with a timeout fails with EWOULDBLOCK or EAGAIN,
retry the select() loop instead of bailing out. This is because select() can
incorrectly report a socket as ready for reading (for example, if it received
some data with an invalid checksum).
- Issue #3612: Added new types to ctypes.wintypes. (CHAR and pointers)
- 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 #9790: Rework imports necessary for samefile and sameopenfile
in ntpath.
- Issue #9928: Properly initialize the types exported by the bz2 module.
- Issue #1675951: Allow GzipFile to work with unseekable file objects. Patch by
Florian Festi.
- Logging: Added QueueListener class to facilitate logging usage for
performance-critical threads.
- Issue #9916: Add some missing errno symbols.
- Issue #9877: Expose sysconfig.get_makefile_filename()
- logging: Added hasHandlers() method to Logger and LoggerAdapter.
- Issue #9908: Fix os.stat() on bytes paths under Windows 7.
- Issue #2643: msync() is not called anymore when deallocating an open mmap
object, only munmap().
- logging: Changed LoggerAdapter implementation internally, to make it easier to
subclass in a useful way.
- logging: hasHandlers method was added to Logger, and isEnabledFor,
getEffectiveLevel, hasHandlers and setLevel were added to LoggerAdapter.
LoggerAdapter was introduced into the unit tests for logging.
- Issue #1686: Fix string.Template when overriding the pattern attribute.
- Issue #9854: SocketIO objects now observe the RawIOBase interface in
non-blocking mode: they return None when an operation would block (instead of
raising an exception).
- Issue #1730136: Fix the comparison between a tk.font.Font and an object of
another kind.
- Issue #9441: logging has better coverage for rotating file handlers.
- Issue #9865: collections.OrderedDict now has a __sizeof__ method.
- Issue #9854: The default read() implementation in io.RawIOBase now handles
non-blocking readinto() returning None correctly.
- Issue #1552: socket.socketpair() now returns regular socket.socket objects
supporting the whole socket API (rather than the "raw" _socket.socket
objects).
- Issue #9853: Fix the signature of SSLSocket.recvfrom() and SSLSocket.sendto()
to match the corresponding socket methods.
- Issue #9840: Added a decorator to reprlib for wrapping __repr__ methods to make
them handle recursive calls within the same thread.
- logging: Enhanced HTTPHandler with secure and credentials initializers.
- 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 #9826: OrderedDict.__repr__ can now handle self-referential values:
d['x'] = d.
- Issue #9825: Using __del__ in the definition of collections.OrderedDict made
it possible for the user to create self-referencing ordered dictionaries which
become permanently uncollectable GC garbage. Reinstated the Python 3.1
approach of using weakref proxies so that reference cycles never get created
in the first place.
- Issue #9579, #9580: Fix os.confstr() for value longer than 255 bytes and
encode the value with filesystem encoding and surrogateescape (instead of
utf-8 in strict mode) . Patch written by David Watson.
- Issue #9632: Remove sys.setfilesystemencoding() function: use PYTHONFSENCODING
environment variable to set the filesystem encoding at Python startup.
sys.setfilesystemencoding() creates inconsistencies because it is unable to
reencode all filenames in all objects.
- Issue #9410: Various optimizations to the pickle module, leading to speedups
up to 4x (depending on the benchmark). Mostly ported from Unladen Swallow;
initial patch by Alexandre Vassalotti.
- The pprint module now supports printing OrderedDicts in their given order
(formerly, it would sort the keys).
- Logging: Added QueueHandler class to facilitate logging usage with
multiprocessing.
- Issue #9707: Rewritten reference implementation of threading.local which is
friendlier towards reference cycles. This change is not normally visible
since an optimized C implementation (_thread._local) is used instead.
- Issue #6394: os.getppid() is now supported on Windows. Note that it will
still return the id of the parent process after it has exited. This process
id may even have been reused by another unrelated process.
- 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.
- Updates to the random module:
* Document which parts of the module are guaranteed to stay the same across
versions and which parts are subject to change.
* Update the seed() method to use all of the bits in a string instead of just
the hash value. This makes better use of the seed value and assures the
seeding is platform independent. Issue #7889.
* Improved the random()-->integer algorithm used in choice(), shuffle(),
sample(), randrange(), and randint(). Formerly, it used int(n*random())
which has a slight bias whenever n is not a power of two. Issue #9025.
* Improved documentation of arguments to randrange(). Issue #9379.
- collections.OrderedDict now supports a new method for repositioning keys to
either end.
- Issue #9754: Similarly to assertRaises and assertRaisesRegexp, unittest test
cases now also have assertWarns and assertWarnsRegexp methods to check that a
given warning type was triggered by the code under test.
- Issue #5506: BytesIO objects now have a getbuffer() method exporting a view of
their contents without duplicating them. The view is both readable and
writable.
- Issue #7566: Implement os.path.sameopenfile for Windows.
- Issue #9293: I/O streams now raise ``io.UnsupportedOperation`` when an
unsupported operation is attempted (for example, writing to a file open only
for reading).
- hashlib has two new constant attributes: algorithms_guaranteed and
algorithms_avaiable that respectively list the names of hash algorithms
guaranteed to exist in all Python implementations and the names of hash
algorithms available in the current process.
- A new package ``concurrent.futures`` as defined by PEP 3148.
C-API
-----
- Add PyErr_SyntaxLocationEx, which supports passing a column offset.
- Issue #9834: Don't segfault in PySequence_GetSlice, PySequence_SetSlice, or
PySequence_DelSlice when the object doesn't have any mapping operations
defined.
Tools/Demos
-----------
- Issue #9188: The gdb extension now handles correctly narrow (UCS2) as well as
wide (UCS4) unicode builds for both the host interpreter (embedded inside gdb)
and the interpreter under test.
Tests
-----
- Issue #9308: Added tests for importing encoded modules that do not
depend on specific stdlib modules being encoded in a certain way.
- Issue #1051: Add a script (Lib/test/make_ssl_certs.py) to generate the custom
certificate and private key files used by SSL-related certs.
- Issue #9978: Wait until subprocess completes initialization. (Win32KillTests
in test_os)
- Issue #7110: regrtest now sends test failure reports and single-failure
tracebacks to stderr rather than stdout.
- Issue #9628: fix runtests.sh -x option so more than one test can be excluded.
- Issue #9899: Fix test_tkinter.test_font on various platforms. Patch by Ned
Deily.
- Issue #9894: Do not hardcode ENOENT in test_subprocess.
- Issue #9315: Added tests for the trace module. Patch by Eli Bendersky.
- Issue #9323: Make test.regrtest.__file__ absolute, this was not always the
case when running profile or trace, for example.
- Issue #9568: Fix test_urllib2_localnet on OS X 10.3.
Build
-----
- Issue #10062: Allow building on platforms which do not have sem_timedwait.
- Issue #10054: Some platforms provide uintptr_t in inttypes.h. Patch by Akira
Kitada.
- Issue #10055: Make json C89-compliant in UCS4 mode.
- Issue #9552: Avoid unnecessary rebuild of OpenSSL. (Windows)
- Issue #1633863: Don't ignore $CC under AIX.
- Issue #9810: Compile bzip2 source files in Python's project file directly. It
used to be built with bzip2's makefile.
- Issue #9848: Stopping trying to build _weakref in setup.py as it is a built-in
module.
- Issue #9806: python-config now has an ``--extension-suffix`` option that
outputs the suffix for dynamic libraries including the ABI version name
defined by PEP 3149.
- Issue #941346: Improve the build process under AIX and allow Python to be
built as a shared library. Patch by Sébastien Sablé.
- Issue #4026: Make the fcntl extension build under AIX. Patch by Sébastien
Sablé.
- Issue #9701: The MacOSX installer can patch the shell profile to ensure that
the "bin" directory inside the framework is on the shell's search path. This
feature now also supports the ZSH shell.
What's New in Python 3.2 Alpha 2?
=================================
*Release date: 05-Sep-2010*
Core and Builtins
-----------------
- Issue #9225: Remove the ROT_FOUR and DUP_TOPX opcode, the latter replaced by
the new (and simpler) DUP_TOP_TWO. Performance isn't changed, but our
bytecode is a bit simplified. Patch by Demur Rumed.
- Issue #9766: Rename poorly named variables exposed by _warnings to prevent
confusion with the proper variables names from 'warnings' itself.
- Issue #9212: dict_keys and dict_items now provide the isdisjoint() method, to
conform to the Set ABC. Patch by Daniel Urban.
- Issue #9737: Fix a crash when trying to delete a slice or an item from a
memoryview object.
- Issue #9549: sys.setdefaultencoding() and PyUnicode_SetDefaultEncoding() are
now removed, since their effect was inexistent in 3.x (the default encoding is
hardcoded to utf-8 and cannot be changed).
- Issue #7415: PyUnicode_FromEncodedObject() now uses the new buffer API
properly. Patch by Stefan Behnel.
- Issue #5553: The Py_LOCAL_INLINE macro now results in inlining on most
platforms. Previously, it inlined only when using Microsoft Visual C.
- Issue #9712: Fix tokenize on identifiers that start with non-ascii names.
- Issue #9688: __basicsize__ and __itemsize__ must be accessed as Py_ssize_t.
- Issue #9684: Added a definition for SIZEOF_WCHAR_T to PC/pyconfig.h, to match
the pyconfig.h generated by configure on other systems.
- Issue #9666: Only catch AttributeError in hasattr(). All other exceptions that
occur during attribute lookup are now propagated to the caller.
- Issue #8622: Add PYTHONFSENCODING environment variable to override the
filesystem encoding.
- Issue #5127: The C functions that access the Unicode Database now accept and
return characters from the full Unicode range, even on narrow unicode builds
(Py_UNICODE_TOLOWER, Py_UNICODE_ISDECIMAL, and others). A visible difference
in Python is that unicodedata.numeric() now returns the correct value for
large code points, and repr() may consider more characters as printable.
- Issue #9425: Create PyModule_GetFilenameObject() function to get the filename
as a unicode object, instead of a byte string. Function needed to support
unencodable filenames. Deprecate PyModule_GetFilename() in favor on the new
function.
- Issue #8063: Call _PyGILState_Init() earlier in Py_InitializeEx().
- Issue #9612: The set object is now 64-bit clean under Windows.
- Issue #8202: sys.argv[0] is now set to '-m' instead of '-c' when searching for
the module file to be executed with the -m command line option.
- Issue #9599: Create PySys_FormatStdout() and PySys_FormatStderr() functions to
write a message formatted by PyUnicode_FromFormatV() to sys.stdout and
sys.stderr.
- Issue #9542: Create PyUnicode_FSDecoder() function, a ParseTuple converter:
decode bytes objects to unicode using PyUnicode_DecodeFSDefaultAndSize(); str
objects are output as-is.
- Issue #9203: Computed gotos are now enabled by default on supported compilers
(which are detected by the configure script). They can still be disable
selectively by specifying --without-computed-gotos.
- Issue #9425: Create PyErr_WarnFormat() function, similar to PyErr_WarnEx() but
use PyUnicode_FromFormatV() to format the warning message.
- Issue #8530: Prevent stringlib fastsearch from reading beyond the front of an
array.
- Issue #5319: Print an error if flushing stdout fails at interpreter shutdown.
- Issue #9337: The str() of a float or complex number is now identical to its
repr().
- 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.
Extension Modules
-----------------
- Issue #8013: time.asctime and time.ctime no longer call system
asctime and ctime functions. The year range for time.asctime is now
1900 through maxint. The range for time.ctime is the same as for
time.localtime. The string produced by these functions is longer
than 24 characters when year is greater than 9999.
- Issue #6608: time.asctime is now checking struct tm fields its input
before passing it to the system asctime. Patch by MunSic Jeong.
- 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.
- Issue #4835: make PyLong_FromSocket_t() and PyLong_AsSocket_t() private to the
socket module, and fix the width of socket descriptors to be correctly
detected under 64-bit Windows.
- Issue #1027206: Support IDNA in gethostbyname, gethostbyname_ex, getaddrinfo
and gethostbyaddr. getnameinfo is now restricted to numeric addresses as
input.
- Issue #9214: Set operations on a KeysView or ItemsView in collections now
correctly return a set. Patch by Eli Bendersky.
- Issue #5737: Add Solaris-specific mnemonics in the errno module. Patch by
Matthew Ahrens.
- Restore GIL in nis_cat in case of error. Decode NIS data to fs encoding, using
the surrogate error handler.
- Issue #665761: ``functools.reduce()`` will no longer mask exceptions other
than ``TypeError`` raised by the iterator argument.
- Issue #9570: Use PEP 383 decoding in os.mknod and os.mkfifo.
- Issue #6915: Under Windows, os.listdir() didn't release the Global Interpreter
Lock around all system calls. Original patch by Ryan Kelly.
- Issue #8524: Add a detach() method to socket objects, so as to put the socket
into the closed state without closing the underlying file descriptor.
- Issue #477863: Emit a ResourceWarning at shutdown if gc.garbage is not empty.
- Issue #6869: Fix a refcount problem in the _ctypes extension.
- Issue #5504: ctypes should now work with systems where mmap can't be
PROT_WRITE and PROT_EXEC.
- Issue #9507: Named tuple repr will now automatically display the right name in
a tuple subclass.
- 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 #8046: Add context manager protocol support and .closed property to mmap
objects.
Library
-------
- Issue #7451: Improve decoding performance of JSON objects, and reduce the
memory consumption of said decoded objects when they use the same strings as
keys.
- Issue #1100562: Fix deep-copying of objects derived from the list and dict
types. Patch by Michele Orrù and Björn Lindqvist.
- Issue #9753: Fixed socket.dup, which did not always work correctly on Windows.
- Issue #9421: Made the get