cpython/Misc/NEWS.d/2.6b3.rst

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.. bpo: 1878
.. date: 7111
.. nonce: exCmjh
.. release date: 20-Aug-2008
.. section: Core and Builtins
Remove Py_TPFLAGS_HAVE_VERSION_TAG from Py_TPFLAGS_DEFAULT when not building
the core. This means 3rd party extensions do not automatically benefit from
the class attribute cache; they will have to explicitly add
Py_TPFLAGS_HAVE_VERSION_TAG to their tp_flags field if they care. This is a
backwards compatibility feature; in 3.0, all types will use the cache by
default.
..
.. bpo: 0
.. date: 7110
.. nonce: 7crJgG
.. section: Core and Builtins
Keyword arguments can now follow starred arguments. (``f(a, *args,
keyword=23)`` is now valid syntax.)
..
.. bpo: 0
.. date: 7109
.. nonce: OfzhCP
.. section: Core and Builtins
ctypes function pointers that are COM methods have a boolean True value
again.
..
.. bpo: 3139
.. date: 7108
.. nonce: j4FT95
.. section: Core and Builtins
Make buffer-interface thread-safe wrt. PyArg_ParseTuple, by denying s# to
parse objects that have a releasebuffer procedure, and introducing s*.
..
.. bpo: 3537
.. date: 7107
.. nonce: Jd1RRZ
.. section: Core and Builtins
Fix an assertion failure when an empty but presized dict object was stored
in the freelist.
..
.. bpo: 1481296
.. date: 7106
.. nonce: 9MXKTf
.. section: Core and Builtins
Make long(float('nan')) and int(float('nan')) raise ValueError consistently
across platforms.
..
.. bpo: 3479
.. date: 7105
.. nonce: 2x4rkT
.. section: Core and Builtins
On platforms where sizeof(int) is smaller than sizeof(long) (64bit Unix, for
example), unichr() would truncate its argument and return u'\x00' for
unichr(2**32). Now it properly raises an OverflowError.
..
.. bpo: 0
.. date: 7104
.. nonce: dpio6h
.. section: Core and Builtins
Apply security patches from Apple.
..
.. bpo: 2542
.. date: 7103
.. nonce: OGrPLh
.. section: Core and Builtins
Now that issubclass() may call arbitrary code, ensure that
PyErr_ExceptionMatches returns 0 when an exception occurs there.
..
.. bpo: 1819
.. date: 7102
.. nonce: LzrD36
.. section: Core and Builtins
function calls with several named parameters are now on average 35% faster
(as measured by pybench).
..
.. bpo: 2378
.. date: 7101
.. nonce: jnJN2_
.. section: Core and Builtins
An unexpected UnboundLocalError or NameError could appear when the python
debugger steps into a class statement: the free variables (local variables
defined in an outer scope) would be deleted from the outer scope.
..
.. bpo: 2620
.. date: 7100
.. nonce: g7NRZZ
.. section: Core and Builtins
Overflow checking when allocating or reallocating memory was not always
being done properly in some python types and extension modules.
PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have all been
updated to perform better checks and places in the code that would
previously leak memory on the error path when such an allocation failed have
been fixed.
..
.. bpo: 3612
.. date: 7099
.. nonce: RX3nFS
.. section: Library
Added some missing basic types in ctypes.wintypes.
..
.. bpo: 0
.. date: 7098
.. nonce: 6arfb-
.. section: Library
The methods ``is_in_tuple()``, ``is_vararg()``, and ``is_keywordarg()`` of
symtable.Symbol have been deprecated for removal in 3.0 and the next
release.
..
.. bpo: 2234
.. date: 7097
.. nonce: ZY7qAp
.. section: Library
distutils failed for some versions of the cygwin compiler. The version
reported by these tools does not necessarily follow the python version
numbering scheme, so the module is less strict when parsing it.
..
.. bpo: 2235
.. date: 7096
.. nonce: lZ4uDf
.. section: Library
Added Py3k warnings for types which will become unhashable under the
stricter __hash__ inheritance rules in 3.0. Several types which did not meet
the rules for hash invariants and were already unhashable in 3.0 have now
been explicitly flagged as unhashable in 2.6 as well (collections.Mapping,
collections.Set, unittest.TestSuite, xml.dom.minidom.NamedNodeMap,
numbers.Number, UserList.UserList)
..
.. bpo: 0
.. date: 7095
.. nonce: njv0Yv
.. section: Library
Update __all__ for cookielib, csv, os, urllib2, and weakref to include
things imported into the module but exposed as part of the module's API.
..
.. bpo: 0
.. date: 7094
.. nonce: IOULx3
.. section: Library
Remove an unneeded import of abc.ABCMeta from 'inspect'.
..
.. bpo: 0
.. date: 7093
.. nonce: ui1bpi
.. section: Library
Remove unneeded imports of 'sys' and 'warnings' from 'io'.
..
.. bpo: 0
.. date: 7092
.. nonce: 5UlHtd
.. section: Library
Remove unneeded imports of 'warnings' from shelve, filecmp, and
dummy_thread.
..
.. bpo: 3575
.. date: 7091
.. nonce: f0B44V
.. section: Library
Incremental decoder's decode function now takes bytearray by using 's*'
instead of 't#'.
..
.. bpo: 2222
.. date: 7090
.. nonce: 76LS-7
.. section: Library
Fixed reference leak when occurred os.rename() fails unicode conversion on
2nd parameter. (windows only)
..
.. bpo: 2464
.. date: 7089
.. nonce: Hm7gBN
.. section: Library
urllib2 now supports a malformation in the URL received in a redirect.
..
.. bpo: 0
.. date: 7088
.. nonce: 1-8Grp
.. section: Library
Silence the DeprecationWarning raised when importing mimetools in
BaseHTTPServer, cgi (and rfc822), httplib.
..
.. bpo: 2776
.. date: 7087
.. nonce: pcfDP0
.. section: Library
fixed small issue when handling a URL with double slash after a 302 response
in the case of not going through a proxy.
..
.. bpo: 2676
.. date: 7086
.. nonce: muz1Bh
.. section: Library
in the email package, content-type parsing was hanging on pathological input
because of quadratic or exponential behaviour of a regular expression.
..
.. bpo: 3476
.. date: 7085
.. nonce: Gdp5Hg
.. section: Library
binary buffered reading through the new "io" library is now thread-safe.
..
.. bpo: 0
.. date: 7084
.. nonce: 4jao1V
.. section: Library
Silence the DeprecationWarning of rfc822 when it is imported by mimetools
since mimetools itself is deprecated. Because modules are cached, all
subsequent imports of rfc822 will not raise a visible DeprecationWarning.
..
.. bpo: 3134
.. date: 7083
.. nonce: sGPHeo
.. section: Library
shutil referenced undefined WindowsError symbol.
..
.. bpo: 1342811
.. date: 7082
.. nonce: Mf5TLp
.. section: Library
Fix leak in Tkinter.Menu.delete. Commands associated to menu entries were
not deleted.
..
.. bpo: 0
.. date: 7081
.. nonce: XIC5LX
.. section: Library
Copied the implementation of reduce() to _functools.reduce() to have a
version that did not raise a DeprecationWarning under -3.
..
.. bpo: 3205
.. date: 7080
.. nonce: RcrD2G
.. section: Library
When iterating over a BZ2File fails allocating memory, raise a MemoryError
rather than silently stop the iteration.
..
.. bpo: 3487
.. date: 7079
.. nonce: LoL0Xp
.. section: Library
sre "bytecode" validator. Passing invalid "re-bytecode" to _sre.compile()
will now be rejected. This should not affect anybody since the re.compile()
function never generates invalid re-bytecode.
..
.. bpo: 3436
.. date: 7078
.. nonce: H10Gz5
.. section: Library
Make csv.DictReader's fieldnames attribute a property so that upon first
access it can be automatically initialized from the csv file if it wasn't
initialized during instantiation.
..
.. bpo: 2338
.. date: 7077
.. nonce: jB97v8
.. section: Library
Create imp.reload() to help with transitioning to Python 3.0 as the reload()
built-in has been removed.
..
.. bpo: 0
.. date: 7076
.. nonce: YAmZW-
.. section: Library
Changed code in the following modules/packages to remove warnings raised
while running under the ``-3`` flag: aifc, asynchat, asyncore, bdb, bsddb,
ConfigParser, cookielib, csv, difflib, distutils, DocXMLRPCServer, email,
filecmp, fileinput, inspect, logging, modulefinder, pdb, pickle, profile,
pstats, pydoc, re, rlcompleter, SimpleXMLRPCServer, shelve, socket,
subprocess, sqlite3, tarfile, Tkinter, test.test_support, textwrap,
threading, tokenize, traceback, urlparse, wsgiref, xml, xmlrpclib.
..
.. bpo: 3039
.. date: 7075
.. nonce: 6106lp
.. section: Library
Fix tarfile.TarFileCompat.writestr() which always raised an AttributeError.
..
.. bpo: 2523
.. date: 7074
.. nonce: F9osM5
.. section: Library
Fix quadratic behaviour when read()ing a binary file without asking for a
specific length. This problem only affected files opened using the new "io"
module, not the built-in open() function.
..
.. bpo: 3449
.. date: 7073
.. nonce: HIJRJS
.. section: Library
Update decimal module to use most recent specification (v. 1.68) and tests
(v. 2.58) from IBM.
..
.. bpo: 3437
.. date: 7072
.. nonce: mFS0ML
.. section: Library
Bug fix in robotparser parsing of Allow: lines.
..
.. bpo: 1592
.. date: 7071
.. nonce: zq1SOI
.. section: Library
Improve error reporting when operations are attempted on a closed shelf.
..
.. bpo: 0
.. date: 7070
.. nonce: q6AI_C
.. section: Library
Deprecate the "ast" parser function aliases.
..
.. bpo: 3120
.. date: 7069
.. nonce: x-kAFj
.. section: Library
On 64-bit Windows the subprocess module was truncating handles.
..
.. bpo: 3303
.. date: 7068
.. nonce: MGj8zT
.. section: Library
Fix a crash in locale.strcoll() when calling it with invalid arguments.
..
.. bpo: 3302
.. date: 7067
.. nonce: qnZ5Ic
.. section: Library
Fix several crashes when calling locale's gettext functions with None
arguments.
..
.. bpo: 3389
.. date: 7066
.. nonce: Dhf3EA
.. section: Library
Allow resolving dotted names for handlers in logging configuration files.
..
.. bpo: 0
.. date: 7065
.. nonce: wtYP5i
.. section: Library
Deprecate the sunaudio module for removal in Python 3.0.
..
.. bpo: 3394
.. date: 7064
.. nonce: PDdapW
.. section: Library
zipfile.writestr sets external attributes when passed a file name rather
than a ZipInfo instance, so files are extracted with mode 0600 rather than
000 under Unix.
..
.. bpo: 1857
.. date: 7063
.. nonce: VLu5_h
.. section: Library
subprocess.Popen.poll gained an additional _deadstate keyword argument in
python 2.5, this broke code that subclassed Popen to include its own poll
method. Fixed my moving _deadstate to an _internal_poll method.
..
.. bpo: 0
.. date: 7062
.. nonce: y_hE4z
.. section: Build
Generate the PatternGrammar pickle during "make install".
..
.. bpo: 2235
.. date: 7061
.. nonce: BMunQV
.. section: Documentation
the C API function PyObject_HashNotImplemented and its interaction with the
tp_hash slot (added in 2.6b2) are now documented
..
.. bpo: 643841
.. date: 7060
.. nonce: Dc77Ec
.. section: Documentation
The language reference now provides more detailed coverage of the lookup
process for special methods. The disclaimers regarding lack of coverage of
new-style classes have also been removed, since the coverage is now fairly
reasonable.