+++++++++++

Python News

+++++++++++

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 #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 dictionnary 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.

Extension Modules

-----------------

- 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.

- 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 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.