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Python News

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(editors: check NEWS.help for information about editing NEWS using ReST.)

What's New in Python 2.5.2?

=============================

*Release date: 21-Feb-2008*

Extension Modules

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

- Fix deallocation of array objects when allocation ran out of memory.

Remove array test case that was incorrect on 64-bit systems.

- Bug #2137: Remove test_struct.test_crasher, which was meaningful

only on 32-bit systems.

What's New in Python 2.5.2c1?

=============================

*Release date: 14-Feb-2008*

Core and builtins

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

- Added checks for integer overflows, contributed by Google. Some are

only available if asserts are left in the code, in cases where they

can't be triggered from Python code.

- Issue #2045: Fix an infinite recursion triggered when printing a subclass of

collections.defaultdict, if its default_factory is set to a bound method.

- Issue #1920: "while 0" statements were completely removed by the compiler,

even in the presence of an "else" clause, which is supposed to be run when

the condition is false. Now the compiler correctly emits bytecode for the

"else" suite.

- A few crashers fixed: weakref_in_del.py (issue #1377858);

loosing_dict_ref.py (issue #1303614, test67.py);

borrowed_ref_[34].py (not in tracker).

- Fix for #1303614 and #1174712 backported from the trunk:

__dict__ descriptor abuse for subclasses of built-in types;

subclassing from both ModuleType and another built-in types.

- Bug #1915: Python compiles with --enable-unicode=no again. However

several extension methods and modules do not work without unicode

support.

- Issue #1678380: distinction between 0.0 and -0.0 was lost during constant

folding optimization. This was a regression from Python 2.4.

- Issue #1882: when compiling code from a string, encoding cookies in the

second line of code were not always recognized correctly.

- Bug #1517: Possible segfault in lookup().

- Issue #1638: %zd configure test fails on Linux.

- Issue #1553: An erroneous __length_hint__ can make list() raise a

SystemError.

- Issue #1521: On 64bit platforms, using PyArgs_ParseTuple with the t# of w#

format code incorrectly truncated the length to an int, even when

PY_SSIZE_T_CLEAN is set. The str.decode method used to return incorrect

results with huge strings.

- Issue #1445: Fix a SystemError when accessing the ``cell_contents``

attribute of an empty cell object.

- Issue #1265: Fix a problem with sys.settrace, if the tracing function uses a

generator expression when at the same time the executed code is closing a

paused generator.

- Issue 1704621: Fix segfaults in list_repeat() and list_inplace_repeat().

- Issue #1147: Generators were not raising a DeprecationWarning when a string

was passed into throw().

- Patch #1031213: Decode source line in SyntaxErrors back to its original source

encoding.

- Patch #1673759: add a missing overflow check when formatting floats

with %G.

- Patch #1733960: Allow T_LONGLONG to accept ints.

- Prevent expandtabs() on string and unicode objects from causing a segfault

when a large width is passed on 32-bit platforms.

- Bug #1733488: Fix compilation of bufferobject.c on AIX.

- Fix Issue #1703448: A joined thread could show up in the

threading.enumerate() list after the join() for a brief period until

it actually exited.

Library

-------

- Patch #1966: Break infinite loop in httplib when the servers

implements the chunked encoding incorrectly.

- tarfile.py: Fix reading of xstar archives.

- #2021: Allow tempfile.NamedTemporaryFile to be used in with statements

by correctly supporting the context management protocol.

- Fixed _ctypes.COMError so that it must be called with exactly three

arguments, instances now have the hresult, text, and details

instance variables.

- #1507247, #2004: tarfile.py: Use mode 0700 for temporary directories and

default permissions for missing directories.

- #175006: The debugger used to skip the condition of a "while" statement

after the first iteration. Now it correctly steps on the expression, and

breakpoints on the "while" statement are honored on each loop.

- The ctypes int types did not accept objects implementing

__int__() in the constructor.

- #1189216: Fix the zipfile module to work on archives with headers

past the 2**31 byte boundary.

- Issue #1336: fix a race condition in subprocess.Popen if the garbage

collector kicked in at the wrong time that would cause the process

to hang when the child wrote to stderr.

- Bug #1687: Fixed plistlib.py restricts <integer> to Python int when writing.

- Issue #1182: many arithmetic bugs in the decimal module have been

fixed, and the decimal module has been updated to comply with the

latest IBM Decimal Arithmetic specification (version 1.66) and

testsuite (version 2.57). (Backported from Python 2.6a0.)

- Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.

- Issue #1735: TarFile.extractall() now correctly sets directory permissions

and times.

- Bug #1713: posixpath.ismount() claims symlink to a mountpoint is a mountpoint.

- Issue #1700: Regular expression inline flags incorrectly handle certain

unicode characters.

- Change ctypes version number to 1.0.3 (when Python 2.5.2 is released,

ctypes 1.0.3 will be also be released).

- Issue #1695: Fixed typo in the docstrings for time.localtime() and gmtime().

- Issue #1642: Fix segfault in ctypes when trying to delete attributes.

- os.access now returns True on Windows for any existing directory.

- Issue #1531: tarfile.py: Read fileobj from the current offset, do not

seek to the start.

- Issue 1429818: patch for trace and doctest modules so they play nicely

together.

- doctest mis-used __loader__.get_data(), assuming universal newlines was used.

- Issue #1705170: contextlib.contextmanager was still swallowing

StopIteration in some cases. This should no longer happen.

- Bug #1307: Fix smtpd so it doesn't raise an exception when there is no arg.

- ctypes will now work correctly on 32-bit systems when Python is

configured with --with-system-ffi.

- Bug #1777530: ctypes.util.find_library uses dump(1) instead of

objdump(1) on Solaris.

- Bug #1153: repr.repr() now doesn't require set and dictionary items

to be orderable to properly represent them.

- Bug #1709599: Run test_1565150 only if the file system is NTFS.

- When encountering a password-protected robots.txt file the RobotFileParser

no longer prompts interactively for a username and password (bug 813986).

- TarFile.__init__() no longer fails if no name argument is passed and

the fileobj argument has no usable name attribute (e.g. StringIO).

- Reverted the fix for bug #1548891 because it broke compatibility with

arbitrary read buffers. Added a note in the documentation.

- GB18030 codec now can encode additional two-byte characters that

are missing in GBK.

- Bug #1704793: Raise KeyError if unicodedata.lookup cannot

represent the result in a single character.

- Change location of the package index to pypi.python.org/pypi

- Bug #1701409: Fix a segfault in printing ctypes.c_char_p and

ctypes.c_wchar_p when they point to an invalid location. As a

sideeffect the representation of these instances has changed.

- Bug #1734723: Fix repr.Repr() so it doesn't ignore the maxtuple attribute.

- Bug #1728403: Fix a bug that CJKCodecs StreamReader hangs when it

reads a file that ends with incomplete sequence and sizehint argument

for .read() is specified.

- Bug #1730389: Have time.strptime() match spaces in a format argument with

``\s+`` instead of ``\s*``.

- SF 1668596/1720897: distutils now copies data files

even if package_dir is empty.

- Fix bug in marshal where bad data would cause a segfault due to

lack of an infinite recursion check.

- mailbox.py: Ignore stray directories found in Maildir's cur/new/tmp

subdirectories.

- HTML-escape the plain traceback in cgitb's HTML output, to prevent

the traceback inadvertently or maliciously closing the comment and

injecting HTML into the error page.

- Bug #1290505: Properly clear time.strptime's locale cache when the locale

changes between calls. Backport of r54646 and r54647.

- Bug #1706381: Specifying the SWIG option "-c++" in the setup.py file

(as opposed to the command line) will now write file names ending in

".cpp" too.

- Patch #1695229: Fix a regression with tarfile.open() and a missing name

argument.

- tarfile.py: Fix directory names to have only one trailing slash.

- Fix test_pty.py to not hang on OS X (and theoretically other *nixes) when

run in verbose mode.

- Bug #1693258: IDLE would show two "Preferences" menu's with some versions

of Tcl/Tk

- Issue1385: The hmac module now computes the correct hmac when using hashes

with a block size other than 64 bytes (such as sha384 and sha512).

- Issue829951: In the smtplib module, SMTP.starttls() now complies with

RFC 3207 and forgets any knowledge obtained from the server not obtained

from the TLS negotiation itself. Patch contributed by Bill Fenner.

Extension Modules

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

- Patch #1736: Fix file name handling of _msi.FCICreate.

- Backport r59862 (issue #712900): make long regexp matches interruptable.

- #1940: make it possible to use curses.filter() before curses.initscr()

as the documentation says.

- Fix a potential 'SystemError: NULL result without error' in _ctypes.

- Bug #1301: Bad assert in _tkinter fixed.

- Patch #1114: fix curses module compilation on 64-bit AIX, & possibly

other 64-bit LP64 platforms where attr_t is not the same size as a long.

(Contributed by Luke Mewburn.)

- Bug #1649098: Avoid declaration of zero-sized array declaration in

structure.

- Bug #1703286: ctypes no longer truncates 64-bit pointers.

- Bug #1721309: prevent bsddb module from freeing random memory.

- Bug #1233: fix bsddb.dbshelve.DBShelf append method to work as

intended for RECNO databases.

- Bug #1726026: Correct the field names of WIN32_FIND_DATAA and

WIN32_FIND_DATAW structures in the ctypes.wintypes module.

- Added support for linking the bsddb module against BerkeleyDB 4.6.x.

- Fix libffi configure for hppa*-*-linux* | parisc*-*-linux*.

- Build using system ffi library on arm*-linux*.

- Bug #1372: zlibmodule.c: int overflow in PyZlib_decompress

- bsddb module: Fix memory leak when using database cursors on

databases without a DBEnv.

Documentation

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

- Bug #1637365: add subsection about "__name__ == __main__" to the

Python tutorial.

- Bug #1569057: Document that calling file.next() on a file open for writing

has undefined behaviour. Backport of r54712.

Build

-----

- Have the search path for building extensions follow the declared order in

$CPPFLAGS and $LDFLAGS.

- Bug #1234: Fixed semaphore errors on AIX 5.2

- Bug #1699: Define _BSD_SOURCE only on OpenBSD.

- Bug #1608: use -fwrapv when GCC supports it. This is important,

newer GCC versions may optimize away overflow buffer overflow checks

without this option!

- Allow simultaneous installation of 32-bit and 64-bit versions

on 64-bit Windows systems.

- Patch #786737: Allow building in a tree of symlinks pointing to

a readonly source.

- Bug #1737210: Change Manufacturer of Windows installer to PSF.

- Bug #1746880: Correctly install DLLs into system32 folder on Win64.

- Define _BSD_SOURCE, to get access to POSIX extensions on OpenBSD 4.1+.

- Patch #1673122: Use an explicit path to libtool when building a framework.

This avoids picking up GNU libtool from a users PATH.

- Allow Emacs 22 for building the documentation in info format.

- Makefile.pre.in(buildbottest): Run an optional script pybuildbot.identify

to include some information about the build environment.

Windows

-------

- Bug #1216: Restore support for Visual Studio 2002.

What's New in Python 2.5.1?

=============================

*Release date: 18-APR-2007*

Core and builtins

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

- Bug #1722485: remove docstrings again when running with -OO.

- Revert SF #1615701: dict.update() does *not* call __getitem__() or keys()

if subclassed. This is to remain consistent with 2.5.

Also revert revision 53667 with made a similar change to set.update().

What's New in Python 2.5.1c1?

=============================

*Release date: 05-APR-2007*

Core and builtins

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

- Patch #1682205: a TypeError while unpacking an iterable is no longer

masked by a generic one with the message "unpack non-sequence".

- Patch #1642547: Fix an error/crash when encountering syntax errors in

complex if statements.

- Patch #1462488: Python no longer segfaults when ``object.__reduce_ex__()``

is called with an object that is faking its type.

- Patch #1680015: Don't modify __slots__ tuple if it contains an unicode

name.

- Patch #922167: Python no longer segfaults when faced with infinitely

self-recursive reload() calls (as reported by bug #742342).

- Patch #1675981: remove unreachable code from ``type.__new__()`` method.

- Patch #1638879: don't accept strings with embedded NUL bytes in long().

- Bug #1674503: close the file opened by execfile() in an error condition.

- Patch #1674228: when assigning a slice (old-style), check for the

sq_ass_slice instead of the sq_slice slot.

- Bug #1669182: prevent crash when trying to print an unraisable error

from a string exception.

- The peephole optimizer left None as a global in functions with a docstring

and an explicit return value.

- Bug #1653736: Properly discard third argument to slot_nb_inplace_power.

- SF #151204: enumerate() now raises an Overflow error at sys.maxint items.

- Bug #1377858: Fix the segfaulting of the interpreter when an object created

a weakref on itself during a __del__ call for new-style classes (classic

classes still have the bug).

- Bug #1648179: set.update() did not recognize an overridden __iter__

method in subclasses of dict.

- Bug #1579370: Make PyTraceBack_Here use the current thread, not the

frame's thread state.

- patch #1630975: Fix crash when replacing sys.stdout in sitecustomize.py

- Bug #1637022: Prefix AST symbols with _Py_.

- Prevent seg fault on shutdown which could occur if an object

raised a warning.

- Bug #1566280: Explicitly invoke threading._shutdown from Py_Main,

to avoid relying on atexit.

- Bug #1590891: random.randrange don't return correct value for big number

- Bug #1456209: In some obscure cases it was possible for a class with a

custom ``__eq__()`` method to confuse set internals when class instances

were used as a set's elements and the ``__eq__()`` method mutated the set.

- The repr for self-referential sets and fronzensets now shows "..." instead

of falling into infinite recursion.

- Eliminated unnecessary repeated calls to hash() by set.intersection() and

set.symmetric_difference_update().

- Bug #1591996: Correctly forward exception in instance_contains().

- Bug #1588287: fix invalid assertion for `1,2` in debug builds.

- Bug #1576657: when setting a KeyError for a tuple key, make sure that

the tuple isn't used as the "exception arguments tuple". Applied to

both sets and dictionaries.

- Bug #1565514, SystemError not raised on too many nested blocks.

- Bug #1576174: WindowsError now displays the windows error code

again, no longer the posix error code.

- Patch #1549049: Support long values in structmember.

- Bug #1542016: make sys.callstats() match its docstring and return an

11-tuple (only relevant when Python is compiled with -DCALL_PROFILE).

- Bug #1545497: when given an explicit base, int() did ignore NULs

embedded in the string to convert.

- Bug #1569998: break inside a try statement (outside a loop) is now

recognized and rejected.

- Patch #1542451: disallow continue anywhere under a finally.

- list.pop(x) accepts any object x following the __index__ protocol.

- Fix some leftovers from the conversion from int to Py_ssize_t

(relevant to strings and sequences of more than 2**31 items).

- A number of places, including integer negation and absolute value,

were fixed to not rely on undefined behaviour of the C compiler

anymore.

- Bug #1566800: make sure that EnvironmentError can be called with any

number of arguments, as was the case in Python 2.4.

- Patch #1567691: super() and new.instancemethod() now don't accept

keyword arguments any more (previously they accepted them, but didn't

use them).

- Fix a bug in the parser's future statement handling that led to "with"

not being recognized as a keyword after, e.g., this statement:

from __future__ import division, with_statement

- Bug #1557232: fix seg fault with def f((((x)))) and def f(((x),)).

- Fix %zd string formatting on Mac OS X so it prints negative numbers.

- Allow exception instances to be directly sliced again.

Extension Modules

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

- Patch #1643738: Problem with signals in a single-threaded application.

- Bug #1563759: struct.unpack doens't support buffer protocol objects.

- Bug #1686475: Support stat'ing open files on Windows again.

- Bug #1647541: Array module's buffer interface can now handle empty arrays.

- Bug #1693079: The array module can now successfully pickle empty arrays.

- Bug #1688393: Prevent crash in socket.recvfrom if length is negative.

- Bug #1622896: fix a rare corner case where the bz2 module raised an

error in spite of a succesful compression.

- Patch #1654417: make operator.{get,set,del}slice use the full range

of Py_ssize_t.

- Patch #1646728: datetime.fromtimestamp fails with negative

fractional times. With unittest.

- Patch #1494140: Add documentation for the new struct.Struct object.

- Patch #1657276: Make NETLINK_DNRTMSG conditional.

- Bug #1653736: Fix signature of time_isoformat.

- Issue #1698398 Zipfile.printdir() crashed because the format string

expected a tuple type of length six instead of time.struct_time object.

- operator.count() now raises an OverflowError when the count reaches sys.maxint.

- Bug #1575169: operator.isSequenceType() now returns False for subclasses of dict.

- collections.defaultdict() now verifies that the factory function is callable.

- Bug #1486663: don't reject keyword arguments for subclasses of builtin

types.

- The version number of the ctypes package was changed to "1.0.2".

- Bug #1664966: Fix crash in exec if Unicode filename can't be decoded.

- Patch #1544279: Improve thread-safety of the socket module by moving

the sock_addr_t storage out of the socket object.

- Patch #1615868: make bz2.BZFile.seek() work for offsets >2GiB.

- Bug #1563807: _ctypes built on AIX fails with ld ffi error.

- Bug #1598620: A ctypes Structure cannot contain itself.

- Bug #1588217: don't parse "= " as a soft line break in binascii's

a2b_qp() function, instead leave it in the string as quopri.decode()

does.

- Patch #838546: Make terminal become controlling in pty.fork()

- Patch #1560695: Add .note.GNU-stack to ctypes' sysv.S so that

ctypes isn't considered as requiring executable stacks.

- Bug #1567666: Emulate GetFileAttributesExA for Win95.

- Bug #1548891: The cStringIO.StringIO() constructor now encodes unicode

arguments with the system default encoding just like the write()

method does, instead of converting it to a raw buffer.

- Bug #1565150: Fix subsecond processing for os.utime on Windows.

- Patch #1572724: fix typo ('=' instead of '==') in _msi.c.

- Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault

when encoding non-BMP unicode characters.

- Bug #1556784: allow format strings longer than 127 characters in

datetime's strftime function.

- Fix itertools.count(n) to work with negative numbers again.

- Make regex engine raise MemoryError if allocating memory fails.

- fixed a bug with bsddb.DB.stat: the flags and txn keyword arguments

were transposed.

- Added support for linking the bsddb module against BerkeleyDB 4.5.x.

- Modifying an empty deque during iteration now raises RuntimeError

instead of StopIteration.

- Bug #1552726: fix polling at the interpreter prompt when certain

versions of the readline library are in use.

- Bug #1633621: if curses.resizeterm() or curses.resize_term() is called,

update _curses.LINES, _curses.COLS, curses.LINES and curses.COLS.

- Fix an off-by-one bug in locale.strxfrm().

Library

-------

- Patch #1685563: remove (don't add) duplicate paths in distutils.MSVCCompiler.

- Bug #978833: Revert r50844, as it broke _socketobject.dup.

- Bug #1675967: re patterns pickled with Python 2.4 and earlier can

now be unpickled with Python 2.5.

- Bug #1684254: webbrowser now uses shlex to split any command lines

given to get(). It also detects when you use '&' as the last argument

and creates a BackgroundBrowser then.

- Patch #1681153: the wave module now closes a file object it opened if

initialization failed.

- Bug #767111: fix long-standing bug in urllib which caused an

AttributeError instead of an IOError when the server's response didn't

contain a valid HTTP status line.

- Bug #1629369: Correctly parse multiline comment in address field.

- Bug #1582282: Fix email.header.decode_header() to properly treat encoded

words with no delimiting whitespace as a single word.

- Patch #1449244: Support Unicode strings in

email.message.Message.{set_charset,get_content_charset}.

- Patch #1542681: add entries for "with", "as" and "CONTEXTMANAGERS" to

pydoc's help keywords.

- Patch #1192590: Fix pdb's "ignore" and "condition" commands so they trap

the IndexError caused by passing in an invalid breakpoint number.

- Bug #1531963: Make SocketServer.TCPServer's server_address always

be equal to calling getsockname() on the server's socket. Fixed by patch

#1545011.

- Bug #1651235: When a tuple was passed to a ctypes function call,

Python would crash instead of raising an error.

- Fix bug #1646630: ctypes.string_at(buf, 0) and ctypes.wstring_at(buf, 0)

returned string up to the first NUL character.

- Bug #1637850: make_table in difflib did not work with unicode

- Bugs #1676321: the empty() function in sched.py returned the wrong result

- unittest now verifies more of its assumptions. In particular, TestCase

and TestSuite subclasses (not instances) are no longer accepted in

TestSuite.addTest(). This should cause no incompatibility since it

never made sense with ordinary subclasses -- the failure just occurred

later, with a more cumbersome exception.

- Patch #685268: Consider a package's __path__ in imputil.

- Patch 1463026: Support default namespace in XMLGenerator.

- Patch 1571379: Make trace's --ignore-dir facility work in the face of

relative directory names.

- Bug #1600860: Search for shared python library in LIBDIR, not lib/python/config,

on "linux" and "gnu" systems.

- Bug #1124861: Automatically create pipes if GetStdHandle fails in

subprocess.

- Patch #783050: the pty.fork() function now closes the slave fd

correctly.

- Patch #1638243: the compiler package is now able to correctly compile

a with statement; previously, executing code containing a with statement

compiled by the compiler package crashed the interpreter.

- Bug #1643943: Fix %U handling for time.strptime.

- Bug #1598181: Avoid O(N**2) bottleneck in subprocess communicate().

- Patch #1627441: close sockets properly in urllib2.

- Bug #1610795: ctypes.util.find_library works now on BSD systems.

- Fix sort stability in heapq.nlargest() and nsmallest().

- Patch #1504073: Fix tarfile.open() for mode "r" with a fileobj argument.

- Patch #1262036: Prevent TarFiles from being added to themselves under

certain conditions.

- Patch #1230446: tarfile.py: fix ExFileObject so that read() and tell()

work correctly together with readline().

- Bug #737202: Make CGIHTTPServer work for scripts in subdirectories.

Fix by Titus Brown.

- Patch #827559: Make SimpleHTTPServer redirect when a directory URL

is missing the trailing slash, so that relative links work correctly.

Patch by Chris Gonnerman.

- Patch #1608267: fix a race condition in os.makedirs() is the directory

to be created is already there.

- Patch #1610437: fix a tarfile bug with long filename headers.

- Patch #1472877: Fix Tix subwidget name resolution.

- Patch #1594554: Always close a tkSimpleDialog on ok(), even

if an exception occurs.

- Patch #1538878: Don't make tkSimpleDialog dialogs transient if

the parent window is withdrawn.

- Patch #1360200: Use unmangled_version RPM spec field to deal with

file name mangling.

- Patch #1359217: Process 2xx response in an ftplib transfer

that precedes an 1xx response.

- Patch #1060577: Extract list of RPM files from spec file in

bdist_rpm

- Bug #1586613: fix zlib and bz2 codecs' incremental en/decoders.

- Patch #1583880: fix tarfile's problems with long names and posix/

GNU modes.

- Fix codecs.EncodedFile which did not use file_encoding in 2.5.0, and

fix all codecs file wrappers to work correctly with the "with"

statement (bug #1586513).

- ctypes callback functions only support 'fundamental' data types as

result type. Raise an error when something else is used. This is a

partial fix for Bug #1574584.

- Bug #813342: Start the IDLE subprocess with -Qnew if the parent

is started with that option.

- Bug #1446043: correctly raise a LookupError if an encoding name given

to encodings.search_function() contains a dot.

- Bug #1545341: The 'classifier' keyword argument to the Distutils setup()

function now accepts tuples as well as lists.

- Bug #1560617: in pyclbr, return full module name not only for classes,

but also for functions.

- Bug #1566602: correct failure of posixpath unittest when $HOME ends

with a slash.

- Bug #1565661: in webbrowser, split() the command for the default

GNOME browser in case it is a command with args.

- Bug #1569790: mailbox.py: Maildir.get_folder() and MH.get_folder()

weren't passing the message factory on to newly created Maildir/MH

objects.

- Bug #1575506: mailbox.py: Single-file mailboxes didn't re-lock

properly in their flush() method.

- Patch #1514543: mailbox.py: In the Maildir class, report errors if there's

a filename clash instead of possibly losing a message. (Patch by David

Watson.)

- Patch #1514544: mailbox.py: Try to ensure that messages/indexes have

been physically written to disk after calling .flush() or

.close(). (Patch by David Watson.)

- mailbox.py: Change MH.pack() to not lock individual message files; this

wasn't consistent with existing implementations of message packing, and

was buggy on some platforms.

- Bug #1633678: change old mailbox.UnixMailbox class to parse

'From' lines less strictly.

- Bug #1576241: fix functools.wraps() to work on built-in functions.

- Patch #1574068: fix urllib/urllib2 to not insert line breaks when

HTTP authentication data was very long.

- Patch #1617413: fix urllib's support for HTTP Basic authentication via HTTPS

(patch by Dug Song).

- Fix a bug in traceback.format_exception_only() that led to an error

being raised when print_exc() was called without an exception set.

In version 2.4, this printed "None", restored that behavior.

- Make webbrowser.BackgroundBrowser usable in Windows (it wasn't because

the close_fds arg to subprocess.Popen is not supported).

Tools/Demos

-----------

- Patch #1552024: add decorator support to unparse.py demo script.

- idle: Honor the "Cancel" action in the save dialog (Debian bug #299092).

Tests

-----

- Cause test.test_socket_ssl:test_basic to raise

test.test_support.ResourceDenied when an HTTPS connection times out.

- Remove passwd.adjunct.byname from list of maps

for test_nis.

Build

-----

- Bug #1655392: don't add -L/usr/lib/pythonX.Y/config to the LDFLAGS

returned by python-config if Python was built with --enable-shared

because that prevented the shared library from being used.

- Patch #1569798: fix a bug in distutils when building Python from a

directory within sys.exec_prefix.

- Bug #1675511: Use -Kpic instead of -xcode=pic32 on Solaris/x86.

- Disable _XOPEN_SOURCE on NetBSD 1.x.

- Bug #1578513: Cross compilation was broken by a change to configure.

Repair so that it's back to how it was in 2.4.3.

- Patch #1576954: Update VC6 build directory; remove redundant

files in VC7.

- Fix build failure on kfreebsd and on the hurd.

- Fix the build of the library reference in info format.

Windows

-------

- Conditionalize definition of _CRT_SECURE_NO_DEPRECATE

and _CRT_NONSTDC_NO_DEPRECATE.

Documentation

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

- Patch #1698768: updated the "using Python on the Mac" intro.

- Patch #1489771: the syntax rules in Python Reference Manual were

updated to reflect the current Python syntax.

- Patch #1686451: Fix return type for

PySequence_{Count,Index,Fast_GET_SIZE}.

What's New in Python 2.5 (final)

================================

*Release date: 19-SEP-2006*

No changes since release candidate 2.

What's New in Python 2.5 release candidate 2?

=============================================

*Release date: 12-SEP-2006*

Core and builtins

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

- Make _PyGILState_NoteThreadState() static, it was not used anywhere

outside of pystate.c and should not be necessary.

- Bug #1551432: Exceptions do not define an explicit __unicode__ method. This

allows calling unicode() on exceptions classes directly to succeed.

- Bug #1542051: Exceptions now correctly call PyObject_GC_UnTrack.

Also make sure that every exception class has __module__ set to

'exceptions'.

- Bug #1550983: emit better error messages for erroneous relative

imports (if not in package and if beyond toplevel package).

- Overflow checking code in integer division ran afoul of new gcc

optimizations. Changed to be more standard-conforming.

- Patch #1541585: fix buffer overrun when performing repr() on

a unicode string in a build with wide unicode (UCS-4) support.

- Patch #1546288: fix seg fault in dict_equal due to ref counting bug.

- The return tuple from str.rpartition(sep) is (tail, sep, head) where

head is the original string if sep was not found.

- Bug #1520864: unpacking singleton tuples in list comprehensions and

generator expressions (x for x, in ... ) works again. Fixing this problem

required changing the .pyc magic number. This means that .pyc files

generated before 2.5c2 will be regenerated.

Library

-------

- Reverted patch #1504333 because it introduced an infinite loop.

- Patch #1553314: Fix the inspect.py slowdown that was hurting IPython & SAGE

by adding smarter caching in inspect.getmodule().

- Fix missing import of the types module in logging.config.

- Patch #1550886: Fix decimal module context management implementation

to match the localcontext() example from PEP 343.

- Bug #1541863: uuid.uuid1 failed to generate unique identifiers

on systems with low clock resolution.

- Bug #1543303, patch #1543897: remove NUL padding from tarfiles.

- Bug #1531862: Do not close standard file descriptors in subprocess.

Extension Modules

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

- Bug #1599782: fix segfault on bsddb.db.DB().type().

- Fix bugs in ctypes:

- anonymous structure fields that have a bit-width specified did not work

- cast function did not accept c_char_p or c_wchar_p instances as first arg

- Bug #1551427: fix a wrong NULL pointer check in the win32 version

of os.urandom().

- Bug #1548092: fix curses.tparm seg fault on invalid input.

- Bug #1550714: fix SystemError from itertools.tee on negative value for n.

- Fixed a few bugs on cjkcodecs:

- gbk and gb18030 codec now handle U+30FB KATAKANA MIDDLE DOT correctly.

- iso2022_jp_2 codec now encodes into G0 for KS X 1001, GB2312

codepoints to conform the standard.

- iso2022_jp_3 and iso2022_jp_2004 codec can encode JIS X 0213:2

codepoints now.

Tests

-----

- Patch #1559413: Fix test_cmd_line if sys.executable contains a space.

- Fix bsddb test_basics.test06_Transactions to check the version

number properly.

- Fix utf-8-sig incremental decoder, which didn't recognise a BOM when the

first chunk fed to the decoder started with a BOM, but was longer than 3 bytes.

Documentation

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

- Patch #1679379: add documentation for fnmatch.translate().

- Patch #1671450: add a section about subclassing builtin types to the

"extending and embedding" tutorial.

- Bug #1629125: fix wrong data type (int -> Py_ssize_t) in PyDict_Next

docs.

- Bug #1565919: document set types in the Language Reference.

- Bug #1546052: clarify that PyString_FromString(AndSize) copies the

string pointed to by its parameter.

- Bug #1566663: remove obsolete example from datetime docs.

- Bug #1541682: Fix example in the "Refcount details" API docs.

Additionally, remove a faulty example showing PySequence_SetItem applied

to a newly created list object and add notes that this isn't a good idea.

Tools

-----

- Bug #1546372: Fixed small bugglet in pybench that caused a missing

file not to get reported properly.

Build

-----

- Bug #1568842: Fix test for uintptr_t.

- Patch #1540470, for OpenBSD 4.0.

- Patch #1545507: Exclude ctypes package in Win64 MSI file.

- Fix OpenSSL debug build process.

C API

-----

- Bug #1542693: remove semi-colon at end of PyImport_ImportModuleEx macro

so it can be used as an expression.

What's New in Python 2.5 release candidate 1?

=============================================

*Release date: 17-AUG-2006*

Core and builtins

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

- Fix infinite recursion when subclassing long and overriding __hash__.

- Fix concatenation (+=) of long strings.