Misc/NEWS.d/3.4.0a1.rst

.. bpo: 16741
.. date: 8734
.. nonce: bBBAqs
.. release date: 2013-08-03
.. section: Core and Builtins

Fix an error reporting in int().

..

.. bpo: 17899
.. date: 8733
.. nonce: Asq8mo
.. section: Core and Builtins

Fix rare file descriptor leak in os.listdir().

..

.. bpo: 10241
.. date: 8732
.. nonce: V_nZk4
.. section: Core and Builtins

Clear extension module dict copies at interpreter shutdown. Patch by Neil
Schemenauer, minimally modified.

..

.. bpo: 9035
.. date: 8731
.. nonce: Cx3O-7
.. section: Core and Builtins

ismount now recognises volumes mounted below a drive root on Windows.
Original patch by Atsuo Ishimoto.

..

.. bpo: 18214
.. date: 8730
.. nonce: K8wQAM
.. section: Core and Builtins

Improve finalization of Python modules to avoid setting their globals to
None, in most cases.

..

.. bpo: 18112
.. date: 8729
.. nonce: 2Oph_E
.. section: Core and Builtins

PEP 442 implementation (safe object finalization).

..

.. bpo: 18552
.. date: 8728
.. nonce: hbrQHu
.. section: Core and Builtins

Check return value of PyArena_AddPyObject() in obj2ast_object().

..

.. bpo: 18560
.. date: 8727
.. nonce: 5q_c1C
.. section: Core and Builtins

Fix potential NULL pointer dereference in sum().

..

.. bpo: 18520
.. date: 8726
.. nonce: JY197j
.. section: Core and Builtins

Add a new PyStructSequence_InitType2() function, same than
PyStructSequence_InitType() except that it has a return value (0 on success,
-1 on error).

..

.. bpo: 15905
.. date: 8725
.. nonce: RG-KXt
.. section: Core and Builtins

Fix theoretical buffer overflow in handling of sys.argv[0], prefix and
exec_prefix if the operation system does not obey MAXPATHLEN.

..

.. bpo: 18408
.. date: 8724
.. nonce: w526wJ
.. section: Core and Builtins

Fix many various bugs in code handling errors, especially on memory
allocation failure (MemoryError).

..

.. bpo: 18344
.. date: 8723
.. nonce: QFOn66
.. section: Core and Builtins

Fix potential ref-leaks in _bufferedreader_read_all().

..

.. bpo: 18342
.. date: 8722
.. nonce: PkhUGS
.. section: Core and Builtins

Use the repr of a module name when an import fails when using ``from ...
import ...``.

..

.. bpo: 17872
.. date: 8721
.. nonce: P_Eal-
.. section: Core and Builtins

Fix a segfault in marshal.load() when input stream returns more bytes than
requested.

..

.. bpo: 18338
.. date: 8720
.. nonce: dhKNX2
.. section: Core and Builtins

`python --version` now prints version string to stdout, and not to stderr.
Patch by Berker Peksag and Michael Dickens.

..

.. bpo: 18426
.. date: 8719
.. nonce: NdnL3v
.. section: Core and Builtins

Fix NULL pointer dereference in C extension import when PyModule_GetDef()
returns an error.

..

.. bpo: 17206
.. date: 8718
.. nonce: eT7Ywa
.. section: Core and Builtins

On Windows, increase the stack size from 2 MB to 4.2 MB to fix a stack
overflow in the marshal module (fix a crash in test_marshal). Patch written
by Jeremy Kloth.

..

.. bpo: 3329
.. date: 8717
.. nonce: 9PzUjS
.. section: Core and Builtins

Implement the PEP 445: Add new APIs to customize Python memory allocators.

..

.. bpo: 18328
.. date: 8716
.. nonce: JHuF3K
.. section: Core and Builtins

Reorder ops in PyThreadState_Delete*() functions. Now the tstate is first
removed from TLS and then deallocated.

..

.. bpo: 13483
.. date: 8715
.. nonce: hc6skP
.. section: Core and Builtins

Use VirtualAlloc in obmalloc on Windows.

..

.. bpo: 18184
.. date: 8714
.. nonce: xLNVG3
.. section: Core and Builtins

PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise OverflowError
when an argument of %c format is out of range.

..

.. bpo: 18111
.. date: 8713
.. nonce: 73CZdq
.. section: Core and Builtins

The min() and max() functions now support a default argument to be returned
instead of raising a ValueError on an empty sequence. (Contributed by Julian
Berman.)

..

.. bpo: 18137
.. date: 8712
.. nonce: a_Vsor
.. section: Core and Builtins

Detect integer overflow on precision in float.__format__() and
complex.__format__().

..

.. bpo: 18183
.. date: 8711
.. nonce: v68GC2
.. section: Core and Builtins

Fix various unicode operations on strings with large unicode codepoints.

..

.. bpo: 18180
.. date: 8710
.. nonce: GqAflm
.. section: Core and Builtins

Fix ref leak in _PyImport_GetDynLoadWindows().

..

.. bpo: 18038
.. date: 8709
.. nonce: Q8prhd
.. section: Core and Builtins

SyntaxError raised during compilation sources with illegal encoding now
always contains an encoding name.

..

.. bpo: 17931
.. date: 8708
.. nonce: FCMg_f
.. section: Core and Builtins

Resolve confusion on Windows between pids and process handles.

..

.. bpo: 0
.. date: 8707
.. nonce: Kzwq2I
.. section: Core and Builtins

Tweak the exception message when the magic number or size value in a
bytecode file is truncated.

..

.. bpo: 17932
.. date: 8706
.. nonce: Y5Sfd4
.. section: Core and Builtins

Fix an integer overflow issue on Windows 64-bit in iterators: change the C
type of seqiterobject.it_index from long to Py_ssize_t.

..

.. bpo: 18065
.. date: 8705
.. nonce: tMRL_r
.. section: Core and Builtins

Don't set __path__ to the package name for frozen packages.

..

.. bpo: 18088
.. date: 8704
.. nonce: 0wObC2
.. section: Core and Builtins

When reloading a module, unconditionally reset all relevant attributes on
the module (e.g. __name__, __loader__, __package__, __file__, __cached__).

..

.. bpo: 17937
.. date: 8703
.. nonce: xCh9n7
.. section: Core and Builtins

Try harder to collect cyclic garbage at shutdown.

..

.. bpo: 12370
.. date: 8702
.. nonce: 6tvbpM
.. section: Core and Builtins

Prevent class bodies from interfering with the __class__ closure.

..

.. bpo: 17644
.. date: 8701
.. nonce: OuMIFJ
.. section: Core and Builtins

Fix a crash in str.format when curly braces are used in square brackets.

..

.. bpo: 17237
.. date: 8700
.. nonce: cF-0Zw
.. section: Core and Builtins

Fix crash in the ASCII decoder on m68k.

..

.. bpo: 17927
.. date: 8699
.. nonce: w21Pnm
.. section: Core and Builtins

Frame objects kept arguments alive if they had been copied into a cell, even
if the cell was cleared.

..

.. bpo: 1545463
.. date: 8698
.. nonce: ChdQTJ
.. section: Core and Builtins

At shutdown, defer finalization of codec modules so that stderr remains
usable.

..

.. bpo: 7330
.. date: 8697
.. nonce: _GTI9L
.. section: Core and Builtins

Implement width and precision (ex: "%5.3s") for the format string of
PyUnicode_FromFormat() function, original patch written by Ysj Ray.

..

.. bpo: 1545463
.. date: 8696
.. nonce: 5O00l2
.. section: Core and Builtins

Global variables caught in reference cycles are now garbage-collected at
shutdown.

..

.. bpo: 17094
.. date: 8695
.. nonce: Uc8zDO
.. section: Core and Builtins

Clear stale thread states after fork().  Note that this is a potentially
disruptive change since it may release some system resources which would
otherwise remain perpetually alive (e.g. database connections kept in
thread-local storage).

..

.. bpo: 17408
.. date: 8694
.. nonce: mfHmrB
.. section: Core and Builtins

Avoid using an obsolete instance of the copyreg module when the interpreter
is shutdown and then started again.

..

.. bpo: 5845
.. date: 8693
.. nonce: Ws1eJX
.. section: Core and Builtins

Enable tab-completion in the interactive interpreter by default, thanks to a
new sys.__interactivehook__.

..

.. bpo: 17115
.. date: 8692
.. nonce: UWAXqy
.. section: Core and Builtins

Module initialization now includes setting __package__ and __loader__
attributes to None. (See also: bpo-17116)

..

.. bpo: 17853
.. date: 8691
.. nonce: 7_fwd1
.. section: Core and Builtins

Ensure locals of a class that shadow free variables always win over the
closures.

..

.. bpo: 17863
.. date: 8690
.. nonce: 3PTJAD
.. section: Core and Builtins

In the interactive console, don't loop forever if the encoding can't be
fetched from stdin.

..

.. bpo: 17867
.. date: 8689
.. nonce: DrmXe2
.. section: Core and Builtins

Raise an ImportError if __import__ is not found in __builtins__.

..

.. bpo: 18698
.. date: 8688
.. nonce: q9QV4u
.. section: Core and Builtins

Ensure importlib.reload() returns the module out of sys.modules.

..

.. bpo: 17857
.. date: 8687
.. nonce: 7cCKDk
.. section: Core and Builtins

Prevent build failures with pre-3.5.0 versions of sqlite3, such as was
shipped with Centos 5 and Mac OS X 10.4.

..

.. bpo: 17413
.. date: 8686
.. nonce: Nt_U0G
.. section: Core and Builtins

sys.settrace callbacks were being passed a string instead of an exception
instance for the 'value' element of the arg tuple if the exception
originated from C code; now an exception instance is always provided.

..

.. bpo: 17782
.. date: 8685
.. nonce: HwEf1N
.. section: Core and Builtins

Fix undefined behaviour on platforms where ``struct timespec``'s "tv_nsec"
member is not a C long.

..

.. bpo: 17722
.. date: 8684
.. nonce: SJ2O7r
.. section: Core and Builtins

When looking up __round__, resolve descriptors.

..

.. bpo: 16061
.. date: 8683
.. nonce: 4LQQlk
.. section: Core and Builtins

Speed up str.replace() for replacing 1-character strings.

..

.. bpo: 17715
.. date: 8682
.. nonce: gZ33Sm
.. section: Core and Builtins

Fix segmentation fault from raising an exception in a __trunc__ method.

..

.. bpo: 17643
.. date: 8681
.. nonce: O1HaFZ
.. section: Core and Builtins

Add __callback__ attribute to weakref.ref.

..

.. bpo: 16447
.. date: 8680
.. nonce: Nqypja
.. section: Core and Builtins

Fixed potential segmentation fault when setting __name__ on a class.

..

.. bpo: 17669
.. date: 8679
.. nonce: TkSpEF
.. section: Core and Builtins

Fix crash involving finalization of generators using yield from.

..

.. bpo: 14439
.. date: 8678
.. nonce: AK0wtz
.. section: Core and Builtins

Python now prints the traceback on runpy failure at startup.

..

.. bpo: 17469
.. date: 8677
.. nonce: Y2sqTK
.. section: Core and Builtins

Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks() when running on
valgrind.

..

.. bpo: 17619
.. date: 8676
.. nonce: nQqD2x
.. section: Core and Builtins

Make input() check for Ctrl-C correctly on Windows.

..

.. bpo: 17357
.. date: 8675
.. nonce: _xDD4K
.. section: Core and Builtins

Add missing verbosity messages for -v/-vv that were lost during the
importlib transition.

..

.. bpo: 17610
.. date: 8674
.. nonce: QpIzEB
.. section: Core and Builtins

Don't rely on non-standard behavior of the C qsort() function.

..

.. bpo: 17323
.. date: 8673
.. nonce: TozBFg
.. section: Core and Builtins

The "[X refs, Y blocks]" printed by debug builds has been disabled by
default.  It can be re-enabled with the `-X showrefcount` option.

..

.. bpo: 17328
.. date: 8672
.. nonce: 5JxFnr
.. section: Core and Builtins

Fix possible refleak in dict.setdefault.

..

.. bpo: 17275
.. date: 8671
.. nonce: Aqerft
.. section: Core and Builtins

Corrected class name in init error messages of the C version of
BufferedWriter and BufferedRandom.

..

.. bpo: 7963
.. date: 8670
.. nonce: FWJtUT
.. section: Core and Builtins

Fixed misleading error message that issued when object is called without
arguments.

..

.. bpo: 8745
.. date: 8669
.. nonce: 7K11Uf
.. section: Core and Builtins

Small speed up zipimport on Windows. Patch by Catalin Iacob.

..

.. bpo: 5308
.. date: 8668
.. nonce: s5uAbP
.. section: Core and Builtins

Raise ValueError when marshalling too large object (a sequence with size >=
2**31), instead of producing illegal marshal data.

..

.. bpo: 12983
.. date: 8667
.. nonce: 9igtJf
.. section: Core and Builtins

Bytes literals with invalid ``\x`` escape now raise a SyntaxError and a full
traceback including line number.

..

.. bpo: 16967
.. date: 8666
.. nonce: UYSqkX
.. section: Core and Builtins

In function definition, evaluate positional defaults before keyword-only
defaults.

..

.. bpo: 17173
.. date: 8665
.. nonce: -KwwJ2
.. section: Core and Builtins

Remove uses of locale-dependent C functions (isalpha() etc.) in the
interpreter.

..

.. bpo: 17137
.. date: 8664
.. nonce: NI_n7A
.. section: Core and Builtins

When an Unicode string is resized, the internal wide character string (wstr)
format is now cleared.

..

.. bpo: 17043
.. date: 8663
.. nonce: 4OVhGk
.. section: Core and Builtins

The unicode-internal decoder no longer read past the end of input buffer.

..

.. bpo: 17098
.. date: 8662
.. nonce: hppfYX
.. section: Core and Builtins

All modules now have __loader__ set even if they pre-exist the bootstrapping
of importlib.

..

.. bpo: 16979
.. date: 8661
.. nonce: jTR3Oe
.. section: Core and Builtins

Fix error handling bugs in the unicode-escape-decode decoder.

..

.. bpo: 16772
.. date: 8660
.. nonce: 8qUxMn
.. section: Core and Builtins

The base argument to the int constructor no longer accepts floats, or other
non-integer objects with an __int__ method.  Objects with an __index__
method are now accepted.

..

.. bpo: 10156
.. date: 8659
.. nonce: iEZGhY
.. section: Core and Builtins

In the interpreter's initialization phase, unicode globals are now
initialized dynamically as needed.

..

.. bpo: 16980
.. date: 8658
.. nonce: e2jDb2
.. section: Core and Builtins

Fix processing of escaped non-ascii bytes in the unicode-escape-decode
decoder.

..

.. bpo: 16975
.. date: 8657
.. nonce: MfvORJ
.. section: Core and Builtins

Fix error handling bug in the escape-decode bytes decoder.

..

.. bpo: 14850
.. date: 8656
.. nonce: yScInY
.. section: Core and Builtins

Now a charmap decoder treats U+FFFE as "undefined mapping" in any mapping,
not only in a string.

..

.. bpo: 16613
.. date: 8655
.. nonce: 8V5m-H
.. section: Core and Builtins

Add *m* argument to ``collections.Chainmap.new_child`` to allow the new
child map to be specified explicitly.

..

.. bpo: 16730
.. date: 8654
.. nonce: X_pIAe
.. section: Core and Builtins

importlib.machinery.FileFinder now no longers raises an exception when
trying to populate its cache and it finds out the directory is unreadable or
has turned into a file. Reported and diagnosed by David Pritchard.

..

.. bpo: 16906
.. date: 8653
.. nonce: 3kn92w
.. section: Core and Builtins

Fix a logic error that prevented most static strings from being cleared.

..

.. bpo: 11461
.. date: 8652
.. nonce: xwn_Zw
.. section: Core and Builtins

Fix the incremental UTF-16 decoder. Original patch by Amaury Forgeot d'Arc.

..

.. bpo: 16856
.. date: 8651
.. nonce: _alafL
.. section: Core and Builtins

Fix a segmentation fault from calling repr() on a dict with a key whose repr
raise an exception.

..

.. bpo: 16367
.. date: 8650
.. nonce: lewlCg
.. section: Core and Builtins

Fix FileIO.readall() on Windows for files larger than 2 GB.

..

.. bpo: 16761
.. date: 8649
.. nonce: bZqaqq
.. section: Core and Builtins

Calling int() with base argument only now raises TypeError.

..

.. bpo: 16759
.. date: 8648
.. nonce: U0-CFS
.. section: Core and Builtins

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.

..

.. bpo: 14420
.. date: 8647
.. nonce: P8fmk8
.. section: Core and Builtins

Support the full DWORD (unsigned long) range in Py2Reg when passed a
REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.

..

.. bpo: 11939
.. date: 8646
.. nonce: rjfRMW
.. section: Core and Builtins

Set the st_dev attribute of stat_result to allow Windows to take advantage
of the os.path.samefile/sameopenfile/samestat implementations used by other
platforms.

..

.. bpo: 16772
.. date: 8645
.. nonce: XI5NvS
.. section: Core and Builtins

The int() constructor's second argument (base) no longer accepts non integer
values.  Consistent with the behavior in Python 2.

..

.. bpo: 14470
.. date: 8644
.. nonce: Qn1nFM
.. section: Core and Builtins

Remove w9xpopen support per PEP 11.

..

.. bpo: 9856
.. date: 8643
.. nonce: 5huiiZ
.. section: Core and Builtins

Replace deprecation warning with raising TypeError in object.__format__.
Patch by Florent Xicluna.

..

.. bpo: 16597
.. date: 8642
.. nonce: z8uMEN
.. section: Core and Builtins

In buffered and text IO, call close() on the underlying stream if invoking
flush() fails.

..

.. bpo: 16722
.. date: 8641
.. nonce: HXliz2
.. section: Core and Builtins

In the bytes() constructor, try to call __bytes__ on the argument before
__index__.

..

.. bpo: 16421
.. date: 8640
.. nonce: Y9A84i
.. section: Core and Builtins

loading multiple modules from one shared object is now handled correctly
(previously, the first module loaded from that file was silently returned).
Patch by Václav Šmilauer.

..

.. bpo: 16602
.. date: 8639
.. nonce: FjnLTD
.. section: Core and Builtins

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.

..

.. bpo: 16495
.. date: 8638
.. nonce: HCGy9Q
.. section: Core and Builtins

Remove extraneous NULL encoding check from bytes_decode().

..

.. bpo: 16619
.. date: 8637
.. nonce: STDaB4
.. section: Core and Builtins

Create NameConstant AST class to represent None, True, and False literals.
As a result, these constants are never loaded at runtime from builtins.

..

.. bpo: 16455
.. date: 8636
.. nonce: chBHs2
.. section: Core and Builtins

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 announce an ASCII locale
encoding, but actually use the ISO-8859-1 encoding in practice.

..

.. bpo: 16562
.. date: 8635
.. nonce: IR_Kj7
.. section: Core and Builtins

Optimize dict equality testing.  Patch by Serhiy Storchaka.

..

.. bpo: 16588
.. date: 8634
.. nonce: YKgxOa
.. section: Core and Builtins

Silence unused-but-set warnings in Python/thread_pthread

..

.. bpo: 16592
.. date: 8633
.. nonce: QVZPAM
.. section: Core and Builtins

stringlib_bytes_join doesn't raise MemoryError on allocation failure.

..

.. bpo: 16546
.. date: 8632
.. nonce: LXZuCC
.. section: Core and Builtins

Fix: ast.YieldFrom argument is now mandatory.

..

.. bpo: 16514
.. date: 8631
.. nonce: NoxJ7R
.. section: Core and Builtins

Fix regression causing a traceback when sys.path[0] is None (actually, any
non-string or non-bytes type).

..

.. bpo: 16306
.. date: 8630
.. nonce: H29SXn
.. section: Core and Builtins

Fix multiple error messages when unknown command line parameters where
passed to the interpreter.  Patch by Hieu Nguyen.

..

.. bpo: 16215
.. date: 8629
.. nonce: hoWMgb
.. section: Core and Builtins

Fix potential double memory free in str.replace().  Patch by Serhiy
Storchaka.

..

.. bpo: 16290
.. date: 8628
.. nonce: aCFQF9
.. section: Core and Builtins

A float return value from the __complex__ special method is no longer
accepted in the complex() constructor.

..

.. bpo: 16416
.. date: 8627
.. nonce: v9EtVT
.. section: Core and Builtins

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.

..

.. bpo: 16453
.. date: 8626
.. nonce: 0Zm9en
.. section: Core and Builtins

Fix equality testing of dead weakref objects.

..

.. bpo: 9535
.. date: 8625
.. nonce: hkixPD
.. section: Core and Builtins

Fix pending signals that have been received but not yet handled by Python to
not persist after os.fork() in the child process.

..

.. bpo: 14794
.. date: 8624
.. nonce: lc6bpg
.. section: Core and Builtins

Fix slice.indices to return correct results for huge values, rather than
raising OverflowError.

..

.. bpo: 15001
.. date: 8623
.. nonce: oD3gtX
.. section: Core and Builtins

fix segfault on "del sys.modules['__main__']". Patch by Victor Stinner.

..

.. bpo: 8271
.. date: 8622
.. nonce: 1qiQia
.. section: Core and Builtins

the utf-8 decoder now outputs the correct number of U+FFFD characters when
used with the 'replace' error handler on invalid utf-8 sequences.  Patch by
Serhiy Storchaka, tests by Ezio Melotti.

..

.. bpo: 5765
.. date: 8621
.. nonce: YFFijP
.. section: Core and Builtins

Apply a hard recursion limit in the compiler instead of blowing the stack
and segfaulting. Initial patch by Andrea Griffini.

..

.. bpo: 16402
.. date: 8620
.. nonce: j73Ooz
.. section: Core and Builtins

When slicing a range, fix shadowing of exceptions from __index__.

..

.. bpo: 16336
.. date: 8619
.. nonce: JaupVb
.. section: Core and Builtins

fix input checking in the surrogatepass error handler. Patch by Serhiy
Storchaka.

..

.. bpo: 8401
.. date: 8618
.. nonce: TslRZr
.. section: Core and Builtins

assigning an int to a bytearray slice (e.g. b[3:4] = 5) now raises an error.

..

.. bpo: 7317
.. date: 8617
.. nonce: 0ogGME
.. section: Core and Builtins

Display full tracebacks when an error occurs asynchronously. Patch by Alon
Horev with update by Alexey Kachayev.

..

.. bpo: 16309
.. date: 8616
.. nonce: i2KrDU
.. section: Core and Builtins

Make PYTHONPATH="" behavior the same as if PYTHONPATH not set at all.

..

.. bpo: 10189
.. date: 8615
.. nonce: 3tsml3
.. section: Core and Builtins

Improve the error reporting of SyntaxErrors related to global and nonlocal
statements.

..

.. bpo: 0
.. date: 8614
.. nonce: iqyUxO
.. section: Core and Builtins

Fix segfaults on setting __qualname__ on builtin types and attempting to
delete it on any type.

..

.. bpo: 14625
.. date: 8613
.. nonce: FHSRMM
.. section: Core and Builtins

Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch written by
Serhiy Storchaka.

..

.. bpo: 16345
.. date: 8612
.. nonce: azvPpP
.. section: Core and Builtins

Fix an infinite loop when ``fromkeys`` on a dict subclass received a
nonempty dict from the constructor.

..

.. bpo: 16271
.. date: 8611
.. nonce: ALsJdN
.. section: Core and Builtins

Fix strange bugs that resulted from __qualname__ appearing in a class's
__dict__ and on type.

..

.. bpo: 12805
.. date: 8610
.. nonce: 0u9UGE
.. section: Core and Builtins

Make bytes.join and bytearray.join faster when the separator is empty.
Patch by Serhiy Storchaka.

..

.. bpo: 6074
.. date: 8609
.. nonce: CXlveH
.. section: Core and Builtins

Ensure cached bytecode files can always be updated by the user that created
them, even when the source file is read-only.

..

.. bpo: 15958
.. date: 8608
.. nonce: 0MDv_n
.. section: Core and Builtins

bytes.join and bytearray.join now accept arbitrary buffer objects.

..

.. bpo: 14783
.. date: 8607
.. nonce: bv7z1_
.. section: Core and Builtins

Improve int() docstring and switch docstrings for str(), range(), and
slice() to use multi-line signatures.

..

.. bpo: 16160
.. date: 8606
.. nonce: NKBYGr
.. section: Core and Builtins

Subclass support now works for types.SimpleNamespace.

..

.. bpo: 16148
.. date: 8605
.. nonce: tRekKP
.. section: Core and Builtins

Implement PEP 424, adding operator.length_hint and PyObject_LengthHint.

..

.. bpo: 0
.. date: 8604
.. nonce: J74Dx4
.. section: Core and Builtins

Upgrade Unicode data (UCD) to version 6.2.

..

.. bpo: 15379
.. date: 8603
.. nonce: Ix2NTb
.. section: Core and Builtins

Fix passing of non-BMP characters as integers for the charmap decoder
(already working as unicode strings).  Patch by Serhiy Storchaka.

..

.. bpo: 15144
.. date: 8602
.. nonce: ENBWTp
.. section: Core and Builtins

Fix possible integer overflow when handling pointers as integer values, by
using `Py_uintptr_t` instead of `size_t`.  Patch by Serhiy Storchaka.

..

.. bpo: 15965
.. date: 8601
.. nonce: kbbwZh
.. section: Core and Builtins

Explicitly cast `AT_FDCWD` as (int).  Required on Solaris 10 (which defines
`AT_FDCWD` as ``0xffd19553``), harmless on other platforms.

..

.. bpo: 15839
.. date: 8600
.. nonce: upi9Zr
.. section: Core and Builtins

Convert SystemErrors in `super()` to RuntimeErrors.

..

.. bpo: 15448
.. date: 8599
.. nonce: dj1nDm
.. section: Core and Builtins

Buffered IO now frees the buffer when closed, instead of when deallocating.

..

.. bpo: 15846
.. date: 8598
.. nonce: fkKoxl
.. section: Core and Builtins

Fix SystemError which happened when using `ast.parse()` in an exception
handler on code with syntax errors.

..

.. bpo: 15897
.. date: 8597
.. nonce: GQpoBE
.. section: Core and Builtins

zipimport.c doesn't check return value of fseek(). Patch by Felipe Cruz.

..

.. bpo: 15801
.. date: 8596
.. nonce: gpcQV3
.. section: Core and Builtins

Make sure mappings passed to '%' formatting are actually subscriptable.

..

.. bpo: 15111
.. date: 8595
.. nonce: hM48LB
.. section: Core and Builtins

__import__ should propagate ImportError when raised as a side-effect of a
module triggered from using fromlist.

..

.. bpo: 15022
.. date: 8594
.. nonce: VevUbS
.. section: Core and Builtins

Add pickle and comparison support to types.SimpleNamespace.

..

.. bpo: 4331
.. date: 8593
.. nonce: Ua1fF0
.. section: Library

Added functools.partialmethod (Initial patch by Alon Horev)

..

.. bpo: 13461
.. date: 8592
.. nonce: nLeS2R
.. section: Library

Fix a crash in the TextIOWrapper.tell method on 64-bit platforms.  Patch by
Yogesh Chaudhari.

..

.. bpo: 18681
.. date: 8591
.. nonce: 8Oug5y
.. section: Library

Fix a NameError in importlib.reload() (noticed by Weizhao Li).

..

.. bpo: 14323
.. date: 8590
.. nonce: Sp7tzh
.. section: Library

Expanded the number of digits in the coefficients for the RGB -- YIQ
conversions so that they match the FCC NTSC versions.

..

.. bpo: 17998
.. date: 8589
.. nonce: hIbru5
.. section: Library

Fix an internal error in regular expression engine.

..

.. bpo: 17557
.. date: 8588
.. nonce: s6BEMI
.. section: Library

Fix os.getgroups() to work with the modified behavior of getgroups(2) on OS
X 10.8.  Original patch by Mateusz Lenik.

..

.. bpo: 18608
.. date: 8587
.. nonce: iLz2V4
.. section: Library

Avoid keeping a strong reference to the locale module inside the _io module.

..

.. bpo: 18619
.. date: 8586
.. nonce: sj_OcY
.. section: Library

Fix atexit leaking callbacks registered from sub-interpreters, and make it
GC-aware.

..

.. bpo: 15699
.. date: 8585
.. nonce: tRg3Ny
.. section: Library

The readline module now uses PEP 3121-style module initialization, so as to
reclaim allocated resources (Python callbacks) at shutdown.  Original patch
by Robin Schreiber.

..

.. bpo: 17616
.. date: 8584
.. nonce: BZCSg_
.. section: Library

wave.open now supports the context management protocol.

..

.. bpo: 18599
.. date: 8583
.. nonce: OLGDK_
.. section: Library

Fix name attribute of _sha1.sha1() object. It now returns 'SHA1' instead of
'SHA'.

..

.. bpo: 13266
.. date: 8582
.. nonce: vWxl34
.. section: Library

Added inspect.unwrap to easily unravel __wrapped__ chains (initial patch by
Daniel Urban and Aaron Iles)

..

.. bpo: 18561
.. date: 8581
.. nonce: vgaf-k
.. section: Library

Skip name in ctypes' _build_callargs() if name is NULL.

..

.. bpo: 18559
.. date: 8580
.. nonce: svR01x
.. section: Library

Fix NULL pointer dereference error in _pickle module

..

.. bpo: 18556
.. date: 8579
.. nonce: -3Wtbg
.. section: Library

Check the return type of PyUnicode_AsWideChar() in ctype's U_set().

..

.. bpo: 17818
.. date: 8578
.. nonce: zyqY5Z
.. section: Library

aifc.getparams now returns a namedtuple.

..

.. bpo: 18549
.. date: 8577
.. nonce: DfZaOD
.. section: Library

Eliminate dead code in socket_ntohl()

..

.. bpo: 18530
.. date: 8576
.. nonce: roUGYs
.. section: Library

Remove additional stat call from posixpath.ismount. Patch by Alex Gaynor.

..

.. bpo: 18514
.. date: 8575
.. nonce: byuxVK
.. section: Library

Fix unreachable Py_DECREF() call in PyCData_FromBaseObj()

..

.. bpo: 9177
.. date: 8574
.. nonce: 0NCpHI
.. section: Library

Calling read() or write() now raises ValueError, not AttributeError, on a
closed SSL socket.  Patch by Senko Rasic.

..

.. bpo: 18513
.. date: 8573
.. nonce: 12JUZi
.. section: Library

Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 + gcc.

..

.. bpo: 18479
.. date: 8572
.. nonce: CLFAeo
.. section: Library

Changed venv Activate.ps1 to make deactivate a function, and removed
Deactivate.ps1.

..

.. bpo: 18480
.. date: 8571
.. nonce: JoDjBC
.. section: Library

Add missing call to PyType_Ready to the _elementtree extension.

..

.. bpo: 17778
.. date: 8570
.. nonce: odXAnT
.. section: Library

Fix test discovery for test_multiprocessing. (Patch by Zachary Ware.)

..

.. bpo: 18393
.. date: 8569
.. nonce: J5Ss7D
.. section: Library

The private module _gestalt and private functions platform._mac_ver_gestalt,
platform._mac_ver_lookup and platform._bcd2str have been removed. This does
not affect the public interface of the platform module.

..

.. bpo: 17482
.. date: 8568
.. nonce: HSxNCy
.. section: Library

functools.update_wrapper (and functools.wraps) now set the __wrapped__
attribute correctly even if the underlying function has a __wrapped__
attribute set.

..

.. bpo: 18431
.. date: 8567
.. nonce: 4TWlLe
.. section: Library

The new email header parser now decodes RFC2047 encoded words in structured
headers.

..

.. bpo: 18432
.. date: 8566
.. nonce: 3KWObr
.. section: Library

The sched module's queue method was incorrectly returning an iterator
instead of a list.

..

.. bpo: 18044
.. date: 8565
.. nonce: -TYxNg
.. section: Library

The new email header parser was mis-parsing encoded words where an encoded
character immediately followed the '?' that follows the CTE character,
resulting in a decoding failure.  They are now decoded correctly.

..

.. bpo: 18101
.. date: 8564
.. nonce: Y9oAK1
.. section: Library

Tcl.split() now process strings nested in a tuple as it do with byte
strings.

..

.. bpo: 18116
.. date: 8563
.. nonce: ZOamPj
.. section: Library

getpass was always getting an error when testing /dev/tty, and thus was
always falling back to stdin, and would then raise an exception if stdin
could not be used (such as /dev/null).  It also leaked an open file. All of
these issues are now fixed.

..

.. bpo: 17198
.. date: 8562
.. nonce: MZjVaU
.. section: Library

Fix a NameError in the dbm module.  Patch by Valentina Mukhamedzhanova.

..

.. bpo: 18013
.. date: 8561
.. nonce: wzBMJh
.. section: Library

Fix cgi.FieldStorage to parse the W3C sample form.

..

.. bpo: 18020
.. date: 8560
.. nonce: eN5fLA
.. section: Library

improve html.escape speed by an order of magnitude. Patch by Matt Bryant.

..

.. bpo: 18347
.. date: 8559
.. nonce: r98Yh-
.. section: Library

ElementTree's html serializer now preserves the case of closing tags.

..

.. bpo: 17261
.. date: 8558
.. nonce: FBzLVh
.. section: Library

Ensure multiprocessing's proxies use proper address.

..

.. bpo: 18343
.. date: 8557
.. nonce: hHmlM5
.. section: Library

faulthandler.register() now keeps the previous signal handler when the
function is called twice, so faulthandler.unregister() restores correctly
the original signal handler.

..

.. bpo: 17097
.. date: 8556
.. nonce: npje1S
.. section: Library

Make multiprocessing ignore EINTR.

..

.. bpo: 18339
.. date: 8555
.. nonce: tawrrh
.. section: Library

Negative ints keys in unpickler.memo dict no longer cause a segfault inside
the _pickle C extension.

..

.. bpo: 18240
.. date: 8554
.. nonce: Um--C2
.. section: Library

The HMAC module is no longer restricted to bytes and accepts any bytes-like
object, e.g. memoryview. Original patch by Jonas Borgström.

..

.. bpo: 18224
.. date: 8553
.. nonce: QcraR9
.. section: Library

Removed pydoc script from created venv, as it causes problems on Windows and
adds no value over and above python -m pydoc ...

..

.. bpo: 18155
.. date: 8552
.. nonce: RNn8WU
.. section: Library

The csv module now correctly handles csv files that use a delimter character
that has a special meaning in regexes, instead of throwing an exception.

..

.. bpo: 14360
.. date: 8551
.. nonce: bn3mJY
.. section: Library

encode_quopri can now be successfully used as an encoder when constructing a
MIMEApplication object.

..

.. bpo: 11390
.. date: 8550
.. nonce: KD6eql
.. section: Library

Add -o and -f command line options to the doctest CLI to specify doctest
options (and convert it to using argparse).

..

.. bpo: 18135
.. date: 8549
.. nonce: NUPrSU
.. section: Library

ssl.SSLSocket.write() now raises an OverflowError if the input string in
longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain() raises a
ValueError if the password is longer than 2 gigabytes. The ssl module does
not support partial write.

..

.. bpo: 11016
.. date: 8548
.. nonce: w7C0Pf
.. section: Library

Add C implementation of the stat module as _stat.

..

.. bpo: 18248
.. date: 8547
.. nonce: SFH5BJ
.. section: Library

Fix libffi build on AIX.

..

.. bpo: 18259
.. date: 8546
.. nonce: _GlBhr
.. section: Library

Declare sethostname in socketmodule.c for AIX

..

.. bpo: 18147
.. date: 8545
.. nonce: SwrMZ0
.. section: Library

Add diagnostic functions to ssl.SSLContext(). get_ca_list() lists all loaded
CA certificates and cert_store_stats() returns amount of loaded X.509 certs,
X.509 CA certs and CRLs.

..

.. bpo: 18167
.. date: 8544
.. nonce: ZeSV0k
.. section: Library

cgi.FieldStorage no longer fails to handle multipart/form-data when ``\r\n``
appears at end of 65535 bytes without other newlines.

..

.. bpo: 18076
.. date: 8543
.. nonce: 4lL63W
.. section: Library

Introduce importlib.util.decode_source().

..

.. bpo: 18357
.. date: 8542
.. nonce: jRiyQA
.. section: Library

add tests for dictview set difference. Patch by Fraser Tweedale.

..

.. bpo: 0
.. date: 8541
.. nonce: 8RBFdG
.. section: Library

importlib.abc.SourceLoader.get_source() no longer changes SyntaxError or
UnicodeDecodeError into ImportError.

..

.. bpo: 18058
.. date: 8540
.. nonce: rfXwQL
.. section: Library

Make the namespace package loader meet the importlib.abc.InspectLoader ABC,
allowing for namespace packages to work with runpy. (See also: bpo-18057)

..

.. bpo: 17177
.. date: 8539
.. nonce: S7sdI_
.. section: Library

The imp module is pending deprecation.

..

.. bpo: 0
.. date: 8538
.. nonce: Y71ClT
.. section: Library

subprocess: Prevent a possible double close of parent pipe fds when the
subprocess exec runs into an error.  Prevent a regular multi-close of the
/dev/null fd when any of stdin, stdout and stderr was set to DEVNULL.

..

.. bpo: 18194
.. date: 8537
.. nonce: -jAlVj
.. section: Library

Introduce importlib.util.cache_from_source() and source_from_cache() while
documenting the equivalent functions in imp as deprecated.

..

.. bpo: 17907
.. date: 8536
.. nonce: yz9wrd
.. section: Library

Document imp.new_module() as deprecated in favour of types.ModuleType.

..

.. bpo: 18192
.. date: 8535
.. nonce: R4NYan
.. section: Library

Introduce importlib.util.MAGIC_NUMBER and document as deprecated
imp.get_magic().

..

.. bpo: 18149
.. date: 8534
.. nonce: pYRXFc
.. section: Library

Add filecmp.clear_cache() to manually clear the filecmp cache. Patch by Mark
Levitt

..

.. bpo: 18193
.. date: 8533
.. nonce: Hi1c_l
.. section: Library

Add importlib.reload().

..

.. bpo: 18157
.. date: 8532
.. nonce: 3qhsTW
.. section: Library

Stop using imp.load_module() in pydoc.

..

.. bpo: 16102
.. date: 8531
.. nonce: Ue82lF
.. section: Library

Make uuid._netbios_getnode() work again on Python 3.

..

.. bpo: 17134
.. date: 8530
.. nonce: 2FXUYZ
.. section: Library

Add ssl.enum_cert_store() as interface to Windows' cert store.

..

.. bpo: 18143
.. date: 8529
.. nonce: qot9pC
.. section: Library

Implement ssl.get_default_verify_paths() in order to debug the default
locations for cafile and capath.

..

.. bpo: 17314
.. date: 8528
.. nonce: EgLvA7
.. section: Library

Move multiprocessing.forking over to importlib.

..

.. bpo: 11959
.. date: 8527
.. nonce: KvHon-
.. section: Library

SMTPServer and SMTPChannel now take an optional map, use of which avoids
affecting global state.

..

.. bpo: 18109
.. date: 8526
.. nonce: ix7u1y
.. section: Library

os.uname() now decodes fields from the locale encoding, and
socket.gethostname() now decodes the hostname from the locale encoding,
instead of using the UTF-8 encoding in strict mode.

..

.. bpo: 18089
.. date: 8525
.. nonce: f8TdL7
.. section: Library

Implement importlib.abc.InspectLoader.load_module.

..

.. bpo: 18088
.. date: 8524
.. nonce: G6H6Z2
.. section: Library

Introduce importlib.abc.Loader.init_module_attrs for setting module
attributes. Leads to the pending deprecation of
importlib.util.module_for_loader.

..

.. bpo: 17403
.. date: 8523
.. nonce: gtIhUd
.. section: Library

urllib.parse.robotparser normalizes the urls before adding to ruleline. This
helps in handling certain types invalid urls in a conservative manner. Patch
contributed by Mher Movsisyan.

..

.. bpo: 18070
.. date: 8522
.. nonce: ocj8nr
.. section: Library

Have importlib.util.module_for_loader() set attributes unconditionally in
order to properly support reloading.

..

.. bpo: 0
.. date: 8521
.. nonce: J5E4J_
.. section: Library

Added importlib.util.module_to_load to return a context manager to provide
the proper module object to load.

..

.. bpo: 18025
.. date: 8520
.. nonce: i8mW0x
.. section: Library

Fixed a segfault in io.BufferedIOBase.readinto() when raw stream's read()
returns more bytes than requested.

..

.. bpo: 18011
.. date: 8519
.. nonce: lvv4RQ
.. section: Library

As was originally intended, base64.b32decode() now raises a binascii.Error
if there are non-b32-alphabet characters present in the input string,
instead of a TypeError.

..

.. bpo: 18072
.. date: 8518
.. nonce: id8KzR
.. section: Library

Implement importlib.abc.InspectLoader.get_code() and
importlib.abc.ExecutionLoader.get_code().

..

.. bpo: 8240
.. date: 8517
.. nonce: XMOgJe
.. section: Library

Set the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag on SSL sockets.

..

.. bpo: 17269
.. date: 8516
.. nonce: 7LxyKz
.. section: Library

Workaround for socket.getaddrinfo crash on MacOS X with port None or "0" and
flags AI_NUMERICSERV.

..

.. bpo: 16986
.. date: 8515
.. nonce: htN8mZ
.. section: Library

ElementTree now correctly works with string input when the internal XML
encoding is not UTF-8 or US-ASCII.

..

.. bpo: 17996
.. date: 8514
.. nonce: JRofiI
.. section: Library

socket module now exposes AF_LINK constant on BSD and OSX.

..

.. bpo: 17900
.. date: 8513
.. nonce: KONBQp
.. section: Library

Allowed pickling of recursive OrderedDicts.  Decreased pickled size and
pickling time.

..

.. bpo: 17914
.. date: 8512
.. nonce: a7CBRm
.. section: Library

Add os.cpu_count(). Patch by Yogesh Chaudhari, based on an initial patch by
Trent Nelson.

..

.. bpo: 17812
.. date: 8511
.. nonce: WW32FE
.. section: Library

Fixed quadratic complexity of base64.b32encode(). Optimize
base64.b32encode() and base64.b32decode() (speed up to 3x).

..

.. bpo: 17980
.. date: 8510
.. nonce: oLLRCS
.. section: Library

Fix possible abuse of ssl.match_hostname() for denial of service using
certificates with many wildcards (CVE-2013-2099).

..

.. bpo: 15758
.. date: 8509
.. nonce: jcf1UW
.. section: Library

Fix FileIO.readall() so it no longer has O(n**2) complexity.

..

.. bpo: 14596
.. date: 8508
.. nonce: _L9ARc
.. section: Library

The struct.Struct() objects now use a more compact implementation.

..

.. bpo: 17981
.. date: 8507
.. nonce: 6UZcQZ
.. section: Library

logging's SysLogHandler now closes the socket when it catches socket
OSErrors.

..

.. bpo: 17964
.. date: 8506
.. nonce: fypN2L
.. section: Library

Fix os.sysconf(): the return type of the C sysconf() function is long, not
int.

..

.. bpo: 0
.. date: 8505
.. nonce: 9OGCJH
.. section: Library

Fix typos in the multiprocessing module.

..

.. bpo: 17754
.. date: 8504
.. nonce: xa6Bc3
.. section: Library

Make ctypes.util.find_library() independent of the locale.

..

.. bpo: 17968
.. date: 8503
.. nonce: nY_hjb
.. section: Library

Fix memory leak in os.listxattr().

..

.. bpo: 17606
.. date: 8502
.. nonce: KiLlUm
.. section: Library

Fixed support of encoded byte strings in the XMLGenerator characters() and
ignorableWhitespace() methods.  Original patch by Sebastian Ortiz Vasquez.

..

.. bpo: 17732
.. date: 8501
.. nonce: nVRMov
.. section: Library

Ignore distutils.cfg options pertaining to install paths if a virtual
environment is active.

..

.. bpo: 17915
.. date: 8500
.. nonce: ugMGeG
.. section: Library

Fix interoperability of xml.sax with file objects returned by codecs.open().

..

.. bpo: 16601
.. date: 8499
.. nonce: nolAu_
.. section: Library

Restarting iteration over tarfile really restarts rather than continuing
from where it left off.  Patch by Michael Birtwell.

..

.. bpo: 17289
.. date: 8498
.. nonce: NPHOks
.. section: Library

The readline module now plays nicer with external modules or applications
changing the rl_completer_word_break_characters global variable.  Initial
patch by Bradley Froehle.

..

.. bpo: 12181
.. date: 8497
.. nonce: Dq2moC
.. section: Library

select module: Fix struct kevent definition on OpenBSD 64-bit platforms.
Patch by Federico Schwindt.

..

.. bpo: 11816
.. date: 8496
.. nonce: sv6zV1
.. section: Library

multiple improvements to the dis module: get_instructions generator, ability
to redirect output to a file, Bytecode and Instruction abstractions. Patch
by Nick Coghlan, Ryan Kelly and Thomas Kluyver.

..

.. bpo: 13831
.. date: 8495
.. nonce: 2ERopR
.. section: Library

Embed stringification of remote traceback in local traceback raised when
pool task raises an exception.

..

.. bpo: 15528
.. date: 8494
.. nonce: EwXcQD
.. section: Library

Add weakref.finalize to support finalization using weakref callbacks.

..

.. bpo: 14173
.. date: 8493
.. nonce: mZM9Pr
.. section: Library

Avoid crashing when reading a signal handler during interpreter shutdown.

..

.. bpo: 15902
.. date: 8492
.. nonce: 3XIl24
.. section: Library

Fix imp.load_module() accepting None as a file when loading an extension
module.

..

.. bpo: 13721
.. date: 8491
.. nonce: _1u_jf
.. section: Library

SSLSocket.getpeercert() and SSLSocket.do_handshake() now raise an OSError
with ENOTCONN, instead of an AttributeError, when the SSLSocket is not
connected.

..

.. bpo: 14679
.. date: 8490
.. nonce: XSBn-L
.. section: Library

add an __all__ (that contains only HTMLParser) to html.parser.

..

.. bpo: 17802
.. date: 8489
.. nonce: ztoqWb
.. section: Library

Fix an UnboundLocalError in html.parser.  Initial tests by Thomas Barlow.

..

.. bpo: 17358
.. date: 8488
.. nonce: kyf-Ix
.. section: Library

Modules loaded by imp.load_source() and load_compiled() (and by extention
load_module()) now have a better chance of working when reloaded.

..

.. bpo: 17804
.. date: 8487
.. nonce: 3ehiC3
.. section: Library

New function ``struct.iter_unpack`` allows for streaming struct unpacking.

..

.. bpo: 17830
.. date: 8486
.. nonce: guxczO
.. section: Library

When keyword.py is used to update a keyword file, it now preserves the line
endings of the original file.

..

.. bpo: 17272
.. date: 8485
.. nonce: UdNBlq
.. section: Library

Making the urllib.request's Request.full_url a descriptor. Fixes bugs with
assignment to full_url. Patch by Demian Brecht.

..

.. bpo: 17353
.. date: 8484
.. nonce: 6Wiqfl
.. section: Library

Plistlib emitted empty data tags with deeply nested datastructures

..

.. bpo: 11714
.. date: 8483
.. nonce: EZxzYl
.. section: Library

Use 'with' statements to assure a Semaphore releases a condition variable.
Original patch by Thomas Rachel.

..

.. bpo: 16624
.. date: 8482
.. nonce: fEhnPS
.. section: Library

`subprocess.check_output` now accepts an `input` argument, allowing the
subprocess's stdin to be provided as a (byte) string. Patch by Zack
Weinberg.

..

.. bpo: 17795
.. date: 8481
.. nonce: IgVwMv
.. section: Library

Reverted backwards-incompatible change in SysLogHandler with Unix domain
sockets.

..

.. bpo: 16694
.. date: 8480
.. nonce: rHrtHr
.. section: Library

Add a pure Python implementation of the operator module. Patch by Zachary
Ware.

..

.. bpo: 11182
.. date: 8479
.. nonce: FEuMiq
.. section: Library

remove the unused and undocumented pydoc.Scanner class. Patch by Martin
Morrison.

..

.. bpo: 17741
.. date: 8478
.. nonce: nAezWJ
.. section: Library

Add ElementTree.XMLPullParser, an event-driven parser for non-blocking
applications.

..

.. bpo: 17555
.. date: 8477
.. nonce: 9klJCB
.. section: Library

Fix ForkAwareThreadLock so that size of after fork registry does not grow
exponentially with generation of process.

..

.. bpo: 17707
.. date: 8476
.. nonce: jX-JqL
.. section: Library

fix regression in multiprocessing.Queue's get() method where it did not
block for short timeouts.

..

.. bpo: 17720
.. date: 8475
.. nonce: mMh9Hz
.. section: Library

Fix the Python implementation of pickle.Unpickler to correctly process the
APPENDS opcode when it is used on non-list objects.

..

.. bpo: 17012
.. date: 8474
.. nonce: EW-5OU
.. section: Library

shutil.which() no longer falls back to the PATH environment variable if an
empty path argument is specified.  Patch by Serhiy Storchaka.

..

.. bpo: 17710
.. date: 8473
.. nonce: OCzZ2n
.. section: Library

Fix pickle raising a SystemError on bogus input.

..

.. bpo: 17341
.. date: 8472
.. nonce: DI-1AO
.. section: Library

Include the invalid name in the error messages from re about invalid group
names.

..

.. bpo: 17702
.. date: 8471
.. nonce: ySqg1b
.. section: Library

os.environ now raises KeyError with the original environment variable name
(str on UNIX), instead of using the encoded name (bytes on UNIX).

..

.. bpo: 16163
.. date: 8470
.. nonce: 3aay4D
.. section: Library

Make the importlib based version of pkgutil.iter_importers work for
submodules. Initial patch by Berker Peksag.

..

.. bpo: 16804
.. date: 8469
.. nonce: vK8Q1B
.. section: Library

Fix a bug in the 'site' module that caused running 'python -S -m site' to
incorrectly throw an exception.

..

.. bpo: 15480
.. date: 8468
.. nonce: RMEmOd
.. section: Library

Remove the deprecated and unused TYPE_INT64 code from marshal. Initial patch
by Daniel Riti.

..

.. bpo: 2118
.. date: 8467
.. nonce: jsDIem
.. section: Library

SMTPException is now a subclass of OSError.

..

.. bpo: 17016
.. date: 8466
.. nonce: lQnMI8
.. section: Library

Get rid of possible pointer wraparounds and integer overflows in the re
module.  Patch by Nickolai Zeldovich.

..

.. bpo: 16658
.. date: 8465
.. nonce: WgAKmI
.. section: Library

add missing return to HTTPConnection.send(). Patch by Jeff Knupp.

..

.. bpo: 9556
.. date: 8464
.. nonce: Dk30j0
.. section: Library

the logging package now allows specifying a time-of-day for a
TimedRotatingFileHandler to rotate.

..

.. bpo: 14971
.. date: 8463
.. nonce: cc8xNA
.. section: Library

unittest test discovery no longer gets confused when a function has a
different __name__ than its name in the TestCase class dictionary.

..

.. bpo: 17487
.. date: 8462
.. nonce: pP4v4C
.. section: Library

The wave getparams method now returns a namedtuple rather than a plain
tuple.

..

.. bpo: 17675
.. date: 8461
.. nonce: -A8oHC
.. section: Library

socket repr() provides local and remote addresses (if any). Patch by
Giampaolo Rodola'

..

.. bpo: 17093
.. date: 8460
.. nonce: M-IcJ-
.. section: Library

Make the ABCs in importlib.abc provide default values or raise reasonable
exceptions for their methods to make them more amenable to super() calls.

..

.. bpo: 17566
.. date: 8459
.. nonce: dqA1rg
.. section: Library

Make importlib.abc.Loader.module_repr() optional instead of an
abstractmethod; now it raises NotImplementedError so as to be ignored by
default.

..

.. bpo: 17678
.. date: 8458
.. nonce: PZfAGl
.. section: Library

Remove the use of deprecated method in http/cookiejar.py by changing the
call to get_origin_req_host() to origin_req_host.

..

.. bpo: 17666
.. date: 8457
.. nonce: L8Gq8u
.. section: Library

Fix reading gzip files with an extra field.

..

.. bpo: 16475
.. date: 8456
.. nonce: aNp-kL
.. section: Library

Support object instancing, recursion and interned strings in marshal

..

.. bpo: 17502
.. date: 8455
.. nonce: yOccrz
.. section: Library

Process DEFAULT values in mock side_effect that returns iterator.

..

.. bpo: 16795
.. date: 8454
.. nonce: zi6RPl
.. section: Library

On the ast.arguments object, unify vararg with varargannotation and kwarg
and kwargannotation. Change the column offset of ast.Attribute to be at the
attribute name.

..

.. bpo: 17434
.. date: 8453
.. nonce: bctYsc
.. section: Library

Properly raise a SyntaxError when a string occurs between future imports.

..

.. bpo: 17117
.. date: 8452
.. nonce: 2wgWhb
.. section: Library

Import and @importlib.util.set_loader now set __loader__ when it has a value
of None or the attribute doesn't exist.

..

.. bpo: 17032
.. date: 8451
.. nonce: FKHNgX
.. section: Library

The "global" in the "NameError: global name 'x' is not defined" error
message has been removed.  Patch by Ram Rachum.

..

.. bpo: 18080
.. date: 8450
.. nonce: 98cUEc
.. section: Library

When building a C extension module on OS X, if the compiler is overriden
with the CC environment variable, use the new compiler as the default for
linking if LDSHARED is not also overriden.  This restores Distutils behavior
introduced in 3.2.3 and inadvertently dropped in 3.3.0.

..

.. bpo: 18113
.. date: 8449
.. nonce: 7w81KJ
.. section: Library

Fixed a refcount leak in the curses.panel module's set_userptr() method.
Reported by Atsuo Ishimoto.

..

.. bpo: 0
.. date: 8448
.. nonce: t5hfCI
.. section: Library

Implement PEP 443 "Single-dispatch generic functions".

..

.. bpo: 0
.. date: 8447
.. nonce: U2ylaI
.. section: Library

Implement PEP 435 "Adding an Enum type to the Python standard library".

..

.. bpo: 15596
.. date: 8446
.. nonce: 0NKCQv
.. section: Library

Faster pickling of unicode strings.

..

.. bpo: 17572
.. date: 8445
.. nonce: 98CntI
.. section: Library

Avoid chained exceptions when passing bad directives to time.strptime().
Initial patch by Claudiu Popa.

..

.. bpo: 17435
.. date: 8444
.. nonce: 167Uzu
.. section: Library

threading.Timer's __init__ method no longer uses mutable default values for
the args and kwargs parameters.

..

.. bpo: 17526
.. date: 8443
.. nonce: wiYvlk
.. section: Library

fix an IndexError raised while passing code without filename to
inspect.findsource().  Initial patch by Tyler Doyle.

..

.. bpo: 17540
.. date: 8442
.. nonce: 0FlRFl
.. section: Library

Added style parameter to logging formatter configuration by dict.

..

.. bpo: 16692
.. date: 8441
.. nonce: 1HPMSd
.. section: Library

The ssl module now supports TLS 1.1 and TLS 1.2.  Initial patch by Michele
Orrù.

..

.. bpo: 17025
.. date: 8440
.. nonce: 2cO-DW
.. section: Library

multiprocessing: Reduce Queue and SimpleQueue contention.

..

.. bpo: 17536
.. date: 8439
.. nonce: PLE2RC
.. section: Library

Add to webbrowser's browser list: www-browser, x-www-browser, iceweasel,
iceape.

..

.. bpo: 17150
.. date: 8438
.. nonce: cs1ti6
.. section: Library

pprint now uses line continuations to wrap long string literals.

..

.. bpo: 17488
.. date: 8437
.. nonce: ODub-T
.. section: Library

Change the subprocess.Popen bufsize parameter default value from unbuffered
(0) to buffering (-1) to match the behavior existing code expects and match
the behavior of the subprocess module in Python 2 to avoid introducing hard
to track down bugs.

..

.. bpo: 17521
.. date: 8436
.. nonce: rDGKe7
.. section: Library

Corrected non-enabling of logger following two calls to fileConfig().

..

.. bpo: 17508
.. date: 8435
.. nonce: B0KwKx
.. section: Library

Corrected logging MemoryHandler configuration in dictConfig() where the
target handler wasn't configured first.

..

.. bpo: 17209
.. date: 8434
.. nonce: w9J1io
.. section: Library

curses.window.get_wch() now correctly handles KeyboardInterrupt (CTRL+c).

..

.. bpo: 5713
.. date: 8433
.. nonce: SuN3vQ
.. section: Library

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.

..

.. bpo: 16997
.. date: 8432
.. nonce: vtxNkx
.. section: Library

unittest.TestCase now provides a subTest() context manager to procedurally
generate, in an easy way, small test instances.

..

.. bpo: 17485
.. date: 8431
.. nonce: coQ2Mv
.. section: Library

Also delete the Request Content-Length header if the data attribute is
deleted.  (Follow on to issue Issue #16464).

..

.. bpo: 15927
.. date: 8430
.. nonce: YpppEm
.. section: Library

CVS now correctly parses escaped newlines and carriage when parsing with
quoting turned off.

..

.. bpo: 17467
.. date: 8429
.. nonce: XLE6Ww
.. section: Library

add readline and readlines support to mock_open in unittest.mock.

..

.. bpo: 13248
.. date: 8428
.. nonce: YnMTCa
.. section: Library

removed deprecated and undocumented difflib.isbjunk, isbpopular.

..

.. bpo: 17192
.. date: 8427
.. nonce: U0oKFo
.. section: Library

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.

..

.. bpo: 8862
.. date: 8426
.. nonce: WkppFP
.. section: Library

Fixed curses cleanup when getkey is interrputed by a signal.

..

.. bpo: 17443
.. date: 8425
.. nonce: _ARDbV
.. section: Library

imaplib.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.

..

.. bpo: 17476
.. date: 8424
.. nonce: Vs3Ky0
.. section: Library

Fixed regression relative to Python2 in undocumented pydoc 'allmethods'; it
was missing unbound methods on the class.

..

.. bpo: 17474
.. date: 8423
.. nonce: y7hWoH
.. section: Library

Remove the deprecated methods of Request class.

..

.. bpo: 16709
.. date: 8422
.. nonce: 03AeYP
.. section: Library

unittest discover order is no-longer filesystem specific. Patch by Jeff
Ramnani.

..

.. bpo: 0
.. date: 8421
.. nonce: 4ymwbY
.. section: Library

Use the HTTPS PyPI url for upload, overriding any plain HTTP URL in pypirc.

..

.. bpo: 5024
.. date: 8420
.. nonce: 4cj0qD
.. section: Library

sndhdr.whichhdr now returns the frame count for WAV files rather than -1.

..

.. bpo: 17460
.. date: 8419
.. nonce: EQquZ6
.. section: Library

Remove the strict argument of HTTPConnection and removing the
DeprecationWarning being issued from 3.2 onwards.

..

.. bpo: 16880
.. date: 8418
.. nonce: VYBbI-
.. section: Library

Do not assume _imp.load_dynamic() is defined in the imp module.

..

.. bpo: 16389
.. date: 8417
.. nonce: uQ4z93
.. section: Library

Fixed a performance regression relative to Python 3.1 in the caching of
compiled regular expressions.

..

.. bpo: 0
.. date: 8416
.. nonce: VWrGFv
.. section: Library

Added missing FeedParser and BytesFeedParser to email.parser.__all__.

..

.. bpo: 17431
.. date: 8415
.. nonce: nID-Rk
.. section: Library

Fix missing import of BytesFeedParser in email.parser.

..

.. bpo: 12921
.. date: 8414
.. nonce: TksQ6K
.. section: Library

http.server's send_error takes an explain argument to send more information
in response. Patch contributed by Karl.

..

.. bpo: 17414
.. date: 8413
.. nonce: lOLLCV
.. section: Library

Add timeit, repeat, and default_timer to timeit.__all__.

..

.. bpo: 1285086
.. date: 8412
.. nonce: RN9orX
.. section: Library

Get rid of the refcounting hack and speed up urllib.parse.unquote() and
urllib.parse.unquote_to_bytes().

..

.. bpo: 17099
.. date: 8411
.. nonce: CfR4FA
.. section: Library

Have importlib.find_loader() raise ValueError when __loader__ is not set,
harmonizing with what happens when the attribute is set to None.

..

.. bpo: 0
.. date: 8410
.. nonce: a1ikiC
.. section: Library

Expose the O_PATH constant in the os module if it is available.

..

.. bpo: 17368
.. date: 8409
.. nonce: y8QiJd
.. section: Library

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.

..

.. bpo: 17385
.. date: 8408
.. nonce: vuRrxn
.. section: Library

Fix quadratic behavior in threading.Condition.  The FIFO queue now uses a
deque instead of a list.

..

.. bpo: 15806
.. date: 8407
.. nonce: vWRkOo
.. section: Library

Add contextlib.ignore().  This creates a context manager to ignore specified
exceptions, replacing the "except SomeException: pass" idiom.

..

.. bpo: 14645
.. date: 8406
.. nonce: FevIjz
.. section: Library

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.

..

.. bpo: 17278
.. date: 8405
.. nonce: pOF4An
.. section: Library

Fix a crash in heapq.heappush() and heapq.heappop() when the list is being
resized concurrently.

..

.. bpo: 16962
.. date: 8404
.. nonce: 4mCLOO
.. section: Library

Use getdents64 instead of the obsolete getdents syscall in the subprocess
module on Linux.

..

.. bpo: 16935
.. date: 8403
.. nonce: ykjyut
.. section: Library

unittest now counts the module as skipped if it raises SkipTest, instead of
counting it as an error.  Patch by Zachary Ware.

..

.. bpo: 17018
.. date: 8402
.. nonce: l8_sa8
.. section: Library

Make Process.join() retry if os.waitpid() fails with EINTR.

..

.. bpo: 17223
.. date: 8401
.. nonce: gzcSyh
.. section: Library

array module: Fix a crasher when converting an array containing invalid
characters (outside range [U+0000; U+10ffff]) to Unicode: repr(array),
str(array) and array.tounicode(). Patch written by Manuel Jacob.

..

.. bpo: 17197
.. date: 8400
.. nonce: 8BMC_8
.. section: Library

profile/cProfile modules refactored so that code of run() and runctx()
utility functions is not duplicated in both modules.

..

.. bpo: 14720
.. date: 8399
.. nonce: rjT0OJ
.. section: Library

sqlite3: Convert datetime microseconds correctly. Patch by Lowe Thiderman.

..

.. bpo: 15132
.. date: 8398
.. nonce: kC6tTe
.. section: Library

Allow a list for the defaultTest argument of unittest.TestProgram. Patch by
Jyrki Pulliainen.

..

.. bpo: 17225
.. date: 8397
.. nonce: Z396fN
.. section: Library

JSON decoder now counts columns in the first line starting with 1, as in
other lines.

..

.. bpo: 6623
.. date: 8396
.. nonce: eWizvk
.. section: Library

Added explicit DeprecationWarning for ftplib.netrc, which has been
deprecated and undocumented for a long time.

..

.. bpo: 13700
.. date: 8395
.. nonce: sfJ2nZ
.. section: Library

Fix byte/string handling in imaplib authentication when an authobject is
specified.

..

.. bpo: 13153
.. date: 8394
.. nonce: DW27xH
.. section: Library

Tkinter functions now raise TclError instead of ValueError when a string
argument contains non-BMP character.

..

.. bpo: 9669
.. date: 8393
.. nonce: Td9alB
.. section: Library

Protect re against infinite loops on zero-width matching in non-greedy
repeat.  Patch by Matthew Barnett.

..

.. bpo: 13169
.. date: 8392
.. nonce: txDMgH
.. section: Library

The maximal repetition number in a regular expression has been increased
from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on 64-bit).

..

.. bpo: 17143
.. date: 8391
.. nonce: HLnFxv
.. section: Library

Fix a missing import in the trace module.  Initial patch by Berker Peksag.

..

.. bpo: 15220
.. date: 8390
.. nonce: 7GI-FE
.. section: Library

email.feedparser's line splitting algorithm is now simpler and faster.

..

.. bpo: 16743
.. date: 8389
.. nonce: 7vwfDN
.. section: Library

Fix mmap overflow check on 32 bit Windows.

..

.. bpo: 16996
.. date: 8388
.. nonce: HEPEjp
.. section: Library

webbrowser module now uses shutil.which() to find a web-browser on the
executable search path.

..

.. bpo: 16800
.. date: 8387
.. nonce: HxSo58
.. section: Library

tempfile.gettempdir() no longer left temporary files when the disk is full.
Original patch by Amir Szekely.

..

.. bpo: 17192
.. date: 8386
.. nonce: f8i9hd
.. section: Library

Import libffi-3.0.12.

..

.. bpo: 16564
.. date: 8385
.. nonce: KBvsbB
.. section: Library

Fixed regression relative to Python2 in the operation of
email.encoders.encode_7or8bit when used with binary data.

..

.. bpo: 17052
.. date: 8384
.. nonce: TEWdzQ
.. section: Library

unittest discovery should use self.testLoader.

..

.. bpo: 4591
.. date: 8383
.. nonce: 9wJlD8
.. section: Library

Uid and gid values larger than 2**31 are supported now.

..

.. bpo: 17141
.. date: 8382
.. nonce: wvMZ5Q
.. section: Library

random.vonmisesvariate() no longer hangs for large kappas.

..

.. bpo: 17149
.. date: 8381
.. nonce: _hUd7T
.. section: Library

Fix random.vonmisesvariate to always return results in [0, 2*math.pi].

..

.. bpo: 1470548
.. date: 8380
.. nonce: vqnyer
.. section: Library

XMLGenerator now works with binary output streams.

..

.. bpo: 6975
.. date: 8379
.. nonce: 4GoPXW
.. section: Library

os.path.realpath() now correctly resolves multiple nested symlinks on POSIX
platforms.

..

.. bpo: 13773
.. date: 8378
.. nonce: 2L-koI
.. section: Library

sqlite3.connect() gets a new `uri` parameter to pass the filename as a URI,
allowing to pass custom options.

..

.. bpo: 16564
.. date: 8377
.. nonce: 5RdAXG
.. section: Library

Fixed regression relative to Python2 in the operation of
email.encoders.encode_noop when used with binary data.

..

.. bpo: 10355
.. date: 8376
.. nonce: s_RAWf
.. section: Library

The mode, name, encoding and newlines properties now work on
SpooledTemporaryFile objects even when they have not yet rolled over.
Obsolete method xreadline (which has never worked in Python 3) has been
removed.

..

.. bpo: 16686
.. date: 8375
.. nonce: zT_bpe
.. section: Library

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.

..

.. bpo: 17073
.. date: 8374
.. nonce: wlCar1
.. section: Library

Fix some integer overflows in sqlite3 module.

..

.. bpo: 16723
.. date: 8373
.. nonce: q1Cw-s
.. section: Library

httplib.HTTPResponse no longer marked closed when the connection is
automatically closed.

..

.. bpo: 15359
.. date: 8372
.. nonce: UDphxr
.. section: Library

Add CAN_BCM protocol support to the socket module. Patch by Brian Thorne.

..

.. bpo: 16948
.. date: 8371
.. nonce: 8mm-53
.. section: Library

Fix quoted printable body encoding for non-latin1 character sets in the
email package.

..

.. bpo: 16811
.. date: 8370
.. nonce: rlH6y6
.. section: Library

Fix folding of headers with no value in the provisional email policies.

..

.. bpo: 17132
.. date: 8369
.. nonce: ebpN0J
.. section: Library

Update symbol for "yield from" grammar changes.

..

.. bpo: 17076
.. date: 8368
.. nonce: IOhR77
.. section: Library

Make copying of xattrs more tolerant of missing FS support. Patch by Thomas
Wouters.

..

.. bpo: 17089
.. date: 8367
.. nonce: Z3-kED
.. section: Library

Expat parser now correctly works with string input when the internal XML
encoding is not UTF-8 or US-ASCII.  It also now accepts bytes and strings
larger than 2 GiB.

..

.. bpo: 6083
.. date: 8366
.. nonce: 5_NDqv
.. section: Library

Fix multiple segmentation faults occured when PyArg_ParseTuple parses nested
mutating sequence.

..

.. bpo: 5289
.. date: 8365
.. nonce: 4azz2m
.. section: Library

Fix ctypes.util.find_library on Solaris.

..

.. bpo: 17106
.. date: 8364
.. nonce: -2_cbV
.. section: Library

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).

..

.. bpo: 17015
.. date: 8363
.. nonce: SzigPI
.. section: Library

When it has a spec, a Mock object now inspects its signature when matching
calls, so that arguments can be matched positionally or by name.

..

.. bpo: 15633
.. date: 8362
.. nonce: t407yZ
.. section: Library

httplib.HTTPResponse is now mark closed when the server sends less than the
advertised Content-Length.

..

.. bpo: 12268
.. date: 8361
.. nonce: sIHfGM
.. section: Library

The io module file object write methods no longer abort early when one of
its write system calls is interrupted (EINTR).

..

.. bpo: 6972
.. date: 8360
.. nonce: e2Lq4T
.. section: Library

The zipfile module no longer overwrites files outside of its destination
path when extracting malicious zip files.

..

.. bpo: 4844
.. date: 8359
.. nonce: ascNW4
.. section: Library

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.

..

.. bpo: 17071
.. date: 8358
.. nonce: kRQAey
.. section: Library

Signature.bind() now works when one of the keyword arguments is named
``self``.

..

.. bpo: 12004
.. date: 8357
.. nonce: SAEl1I
.. section: Library

Fix an internal error in PyZipFile when writing an invalid Python file.
Patch by Ben Morgan.

..

.. bpo: 0
.. date: 8356
.. nonce: 4OOKnh
.. section: Library

Have py_compile use importlib as much as possible to avoid code duplication.
Code now raises FileExistsError if the file path to be used for the byte-
compiled file is a symlink or non-regular file as a warning that import will
not keep the file path type if it writes to that path.

..

.. bpo: 16972
.. date: 8355
.. nonce: nEo5JN
.. section: Library

Have site.addpackage() consider already known paths even when none are
explicitly passed in. Bug report and fix by Kirill.

..

.. bpo: 1602133
.. date: 8354
.. nonce: lYqpUo
.. section: Library

on Mac OS X a shared library build (``--enable-shared``) now fills the
``os.environ`` variable correctly.

..

.. bpo: 15505
.. date: 8353
.. nonce: -pH9Mh
.. section: Library

`unittest.installHandler` no longer assumes SIGINT handler is set to a
callable object.

..

.. bpo: 13454
.. date: 8352
.. nonce: 81rUI-
.. section: Library

Fix a crash when deleting an iterator created by itertools.tee() if all
other iterators were very advanced before.

..

.. bpo: 12411
.. date: 8351
.. nonce: cw1MdL
.. section: Library

Fix to cgi.parse_multipart to correctly use bytes boundaries and bytes data.
Patch by Jonas Wagner.

..

.. bpo: 16957
.. date: 8350
.. nonce: ne-gBj
.. section: Library

shutil.which() no longer searches a bare file name in the current directory
on Unix and no longer searches a relative file path with a directory part in
PATH directories.  Patch by Thomas Kluyver.

..

.. bpo: 1159051
.. date: 8349
.. nonce: 1KBJ6M
.. section: Library

GzipFile now raises EOFError when reading a corrupted file with truncated
header or footer.

..

.. bpo: 16993
.. date: 8348
.. nonce: L3OmWx
.. section: Library

shutil.which() now preserves the case of the path and extension on Windows.

..

.. bpo: 16992
.. date: 8347
.. nonce: s_RXIM
.. section: Library

On Windows in signal.set_wakeup_fd, validate the file descriptor argument.

..

.. bpo: 16422
.. date: 8346
.. nonce: SNwB1o
.. section: Library

For compatibility with the Python version, the C version of decimal now uses
strings instead of integers for rounding mode constants.

..

.. bpo: 15861
.. date: 8345
.. nonce: gGkxCM
.. section: Library

tkinter now correctly works with lists and tuples containing strings with
whitespaces, backslashes or unbalanced braces.

..

.. bpo: 9720
.. date: 8344
.. nonce: XPXDks
.. section: Library

zipfile now writes correct local headers for files larger than 4 GiB.

..

.. bpo: 16955
.. date: 8343
.. nonce: VD_jpc
.. section: Library

Fix the poll() method for multiprocessing's socket connections on Windows.

..

.. bpo: 0
.. date: 8342
.. nonce: PoQ__t
.. section: Library

SSLContext.load_dh_params() now properly closes the input file.

..

.. bpo: 15031
.. date: 8341
.. nonce: an2pG1
.. section: Library

Refactor some .pyc management code to cut down on code duplication. Thanks
to Ronan Lamy for the report and taking an initial stab at the problem.

..

.. bpo: 16398
.. date: 8340
.. nonce: JU7cL4
.. section: Library

Optimize deque.rotate() so that it only moves pointers and doesn't touch the
underlying data with increfs and decrefs.

..

.. bpo: 16900
.. date: 8339
.. nonce: oyyCUi
.. section: Library

Issue a ResourceWarning when an ssl socket is left unclosed.

..

.. bpo: 13899
.. date: 8338
.. nonce: PJ5tHf
.. section: Library

``\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.

..

.. bpo: 15545
.. date: 8337
.. nonce: FCBNNV
.. section: Library

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).

..

.. bpo: 0
.. date: 8336
.. nonce: dEUst7
.. section: Library

fcntl: add F_DUPFD_CLOEXEC constant, available on Linux 2.6.24+.

..

.. bpo: 15972
.. date: 8335
.. nonce: G3_6id
.. section: Library

Fix error messages when os functions expecting a file name or file
descriptor receive the incorrect type.

..

.. bpo: 8109
.. date: 8334
.. nonce: CbDLHH
.. section: Library

The ssl module now has support for server-side SNI, thanks to a
:meth:`SSLContext.set_servername_callback` method.  Patch by Daniel Black.

..

.. bpo: 16860
.. date: 8333
.. nonce: W9CpNg
.. section: Library

In tempfile, use O_CLOEXEC when available to set the close-on-exec flag
atomically.

..

.. bpo: 16674
.. date: 8332
.. nonce: Q8wDpT
.. section: Library

random.getrandbits() is now 20-40% faster for small integers.

..

.. bpo: 16009
.. date: 8331
.. nonce: tTmrs1
.. section: Library

JSON error messages now provide more information.

..

.. bpo: 16828
.. date: 8330
.. nonce: uSGRTZ
.. section: Library

Fix error incorrectly raised by bz2.compress(b'') and
bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman.

..

.. bpo: 16833
.. date: 8329
.. nonce: g0QSh5
.. section: Library

In http.client.HTTPConnection, do not concatenate the request headers and
body when the payload exceeds 16 KB, since it can consume more memory for no
benefit.  Patch by Benno Leslie.

..

.. bpo: 16541
.. date: 8328
.. nonce: rfIhAb
.. section: Library

tk_setPalette() now works with keyword arguments.

..

.. bpo: 16820
.. date: 8327
.. nonce: e27ceV
.. section: Library

In configparser, `parser.popitem()` no longer raises ValueError. This makes
`parser.clean()` work correctly.

..

.. bpo: 16820
.. date: 8326
.. nonce: eSaGa4
.. section: Library

In configparser, ``parser['section'] = {}`` now preserves section order
within the parser. This makes `parser.update()` preserve section order as
well.

..

.. bpo: 16820
.. date: 8325
.. nonce: yk3gzb
.. section: Library

In configparser, ``parser['DEFAULT'] = {}`` now correctly clears previous
values stored in the default section. Same goes for
``parser.update({'DEFAULT': {}})``.

..

.. bpo: 9586
.. date: 8324
.. nonce: 9tuKgR
.. section: Library

Redefine SEM_FAILED on MacOSX to keep compiler happy.

..

.. bpo: 16787
.. date: 8323
.. nonce: H5R03d
.. section: Library

Increase asyncore and asynchat default output buffers size, to decrease CPU
usage and increase throughput.

..

.. bpo: 10527
.. date: 8322
.. nonce: 7btVvN
.. section: Library

make multiprocessing use poll() instead of select() if available.

..

.. bpo: 16688
.. date: 8321
.. nonce: V4uNMo
.. section: Library

Now regexes contained backreferences correctly work with non-ASCII strings.
Patch by Matthew Barnett.

..

.. bpo: 16486
.. date: 8320
.. nonce: bfM62e
.. section: Library

Make aifc files act as context managers.

..

.. bpo: 16485
.. date: 8319
.. nonce: aUJyTZ
.. section: Library

Now file descriptors are closed if file header patching failed on closing an
aifc file.

..

.. bpo: 16640
.. date: 8318
.. nonce: uijEnP
.. section: Library

Run less code under a lock in sched module.

..

.. bpo: 16165
.. date: 8317
.. nonce: QuZOIy
.. section: Library

sched.scheduler.run() no longer blocks a scheduler for other threads.

..

.. bpo: 16641
.. date: 8316
.. nonce: JYpAhs
.. section: Library

Default values of sched.scheduler.enter() are no longer modifiable.

..

.. bpo: 16618
.. date: 8315
.. nonce: lo3BQu
.. section: Library

Make glob.glob match consistently across strings and bytes regarding leading
dots.  Patch by Serhiy Storchaka.

..

.. bpo: 16788
.. date: 8314
.. nonce: Os6OJu
.. section: Library

Add samestat to Lib/ntpath.py

..

.. bpo: 16713
.. date: 8313
.. nonce: Mq84Hq
.. section: Library

Parsing of 'tel' urls using urlparse separates params from path.

..

.. bpo: 16443
.. date: 8312
.. nonce: SnGosi
.. section: Library

Add docstrings to regular expression match objects. Patch by Anton Kasyanov.

..

.. bpo: 15701
.. date: 8311
.. nonce: rAh1Sy
.. section: Library

Fix HTTPError info method call to return the headers information.

..

.. bpo: 16752
.. date: 8310
.. nonce: gIWkHK
.. section: Library

Add a missing import to modulefinder. Patch by Berker Peksag.

..

.. bpo: 16646
.. date: 8309
.. nonce: Tc3vsq
.. section: Library

ftplib.FTP.makeport() might lose socket error details. (patch by Serhiy
Storchaka)

..

.. bpo: 16626
.. date: 8308
.. nonce: P9xKcu
.. section: Library

Fix infinite recursion in glob.glob() on Windows when the pattern contains a
wildcard in the drive or UNC path.  Patch by Serhiy Storchaka.

..

.. bpo: 15783
.. date: 8307
.. nonce: y8LbED
.. section: Library

Except for the number methods, the C version of decimal now supports all
None default values present in decimal.py. These values were largely
undocumented.

..

.. bpo: 11175
.. date: 8306
.. nonce: T80G4_
.. section: Library

argparse.FileType now accepts encoding and errors arguments. Patch by Lucas
Maystre.

..

.. bpo: 16488
.. date: 8305
.. nonce: SeOkz0
.. section: Library

epoll() objects now support the `with` statement.  Patch by Serhiy
Storchaka.

..

.. bpo: 16298
.. date: 8304
.. nonce: kN3o52
.. section: Library

In HTTPResponse.read(), close the socket when there is no Content-Length and
the incoming stream is finished.  Patch by Eran Rundstein.

..

.. bpo: 16049
.. date: 8303
.. nonce: HeaoM8
.. section: Library

Add abc.ABC class to enable the use of inheritance to create ABCs, rather
than the more cumbersome metaclass=ABCMeta. Patch by Bruno Dupuis.

..

.. bpo: 0
.. date: 8302
.. nonce: 0T54b0
.. section: Library

Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're
available.

..

.. bpo: 15701
.. date: 8301
.. nonce: 7KaZjl
.. section: Library

Add a .headers attribute to urllib.error.HTTPError. Patch contributed by
Berker Peksag.

..

.. bpo: 15872
.. date: 8300
.. nonce: hPj0NT
.. section: Library

Fix 3.3 regression introduced by the new fd-based shutil.rmtree that caused
it to not ignore certain errors when ignore_errors was set. Patch by
Alessandro Moura and Serhiy Storchaka.

..

.. bpo: 16248
.. date: 8299
.. nonce: yOopnt
.. section: Library

Disable code execution from the user's home directory by tkinter when the -E
flag is passed to Python.  Patch by Zachary Ware.

..

.. bpo: 13390
.. date: 8298
.. nonce: Oj2WC_
.. section: Library

New function :func:`sys.getallocatedblocks()` returns the number of memory
blocks currently allocated.

..

.. bpo: 16628
.. date: 8297
.. nonce: qnWML3
.. section: Library

Fix a memory leak in ctypes.resize().

..

.. bpo: 13614
.. date: 8296
.. nonce: buqA2j
.. section: Library

Fix setup.py register failure with invalid rst in description. Patch by
Julien Courteau and Pierre Paul Lefebvre.

..

.. bpo: 13512
.. date: 8295
.. nonce: KW8Du9
.. section: Library

Create ~/.pypirc securely (CVE-2011-4944).  Initial patch by Philip Jenvey,
tested by Mageia and Debian.

..

.. bpo: 7719
.. date: 8294
.. nonce: O-kdp6
.. section: Library

Make distutils ignore ``.nfs*`` files instead of choking later on.  Initial
patch by SilentGhost and Jeff Ramnani.

..

.. bpo: 13120
.. date: 8293
.. nonce: XjAzio
.. section: Library

Allow to call pdb.set_trace() from thread. Patch by Ilya Sandler.

..

.. bpo: 16585
.. date: 8292
.. nonce: f_MHWg
.. section: Library

Make CJK encoders support error handlers that return bytes per PEP 383.

..

.. bpo: 10182
.. date: 8291
.. nonce: 0nH79H
.. section: Library

The re module doesn't truncate indices to 32 bits anymore. Patch by Serhiy
Storchaka.

..

.. bpo: 16333
.. date: 8290
.. nonce: 8YUVkp
.. section: Library

use (",", ": ") as default separator in json when indent is specified, to
avoid trailing whitespace.  Patch by Serhiy Storchaka.

..

.. bpo: 16573
.. date: 8289
.. nonce: kKjx72
.. section: Library

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().

..

.. bpo: 16464
.. date: 8288
.. nonce: fcgAzt
.. section: Library

Reset the Content-Length header when a urllib Request is reused with new
data.

..

.. bpo: 12848
.. date: 8287
.. nonce: gGAbLz
.. section: Library

The pure Python pickle implementation now treats object lengths as unsigned
32-bit integers, like the C implementation does. Patch by Serhiy Storchaka.

..

.. bpo: 16423
.. date: 8286
.. nonce: ZVmUs3
.. section: Library

urllib.request now has support for ``data:`` URLs.  Patch by Mathias
Panzenböck.

..

.. bpo: 4473
.. date: 8285
.. nonce: 3tTGZx
.. section: Library

Add a POP3.stls() to switch a clear-text POP3 session into an encrypted POP3
session, on supported servers.  Patch by Lorenzo Catucci.

..

.. bpo: 4473
.. date: 8284
.. nonce: BcE9oH
.. section: Library

Add a POP3.capa() method to query the capabilities advertised by the POP3
server.  Patch by Lorenzo Catucci.

..

.. bpo: 4473
.. date: 8283
.. nonce: dU-l8q
.. section: Library

Ensure the socket is shutdown cleanly in POP3.close(). Patch by Lorenzo
Catucci.

..

.. bpo: 16522
.. date: 8282
.. nonce: NIzWem
.. section: Library

added FAIL_FAST flag to doctest.

..

.. bpo: 15627
.. date: 8281
.. nonce: 4PHtp9
.. section: Library

Add the importlib.abc.InspectLoader.source_to_code() method.

..

.. bpo: 16408
.. date: 8280
.. nonce: iqzks4
.. section: Library

Fix file descriptors not being closed in error conditions in the zipfile
module.  Patch by Serhiy Storchaka.

..

.. bpo: 14631
.. date: 8279
.. nonce: -GSQmy
.. section: Library

Add a new :class:`weakref.WeakMethod` to simulate weak references to bound
methods.

..

.. bpo: 16469
.. date: 8278
.. nonce: Od7MLh
.. section: Library

Fix exceptions from float -> Fraction and Decimal -> Fraction conversions
for special values to be consistent with those for float -> int and Decimal
-> int.  Patch by Alexey Kachayev.

..

.. bpo: 16481
.. date: 8277
.. nonce: TsOri8
.. section: Library

multiprocessing no longer leaks process handles on Windows.

..

.. bpo: 12428
.. date: 8276
.. nonce: wo0Z3V
.. section: Library

Add a pure Python implementation of functools.partial(). Patch by Brian
Thorne.

..

.. bpo: 16140
.. date: 8275
.. nonce: lszQfR
.. section: Library

The subprocess module no longer double closes its child subprocess.PIPE
parent file descriptors on child error prior to exec().

..

.. bpo: 0
.. date: 8274
.. nonce: G2vxaZ
.. section: Library

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.

..

.. bpo: 0
.. date: 8273
.. nonce: Kf0oN-
.. section: Library

The subprocess module now raises its own SubprocessError instead of a
RuntimeError in various error situations which should not normally happen.

..

.. bpo: 16327
.. date: 8272
.. nonce: uVAHv3
.. section: Library

The subprocess module no longer leaks file descriptors used for
stdin/stdout/stderr pipes to the child when fork() fails.

..

.. bpo: 14396
.. date: 8271
.. nonce: aUgPuV
.. section: Library

Handle the odd rare case of waitpid returning 0 when not expected in
subprocess.Popen.wait().

..

.. bpo: 16411
.. date: 8270
.. nonce: 9Mn07O
.. section: Library

Fix a bug where zlib.decompressobj().flush() might try to access previously-
freed memory. Patch by Serhiy Storchaka.

..

.. bpo: 16357
.. date: 8269
.. nonce: JSAbxU
.. section: Library

fix calling accept() on a SSLSocket created through
SSLContext.wrap_socket().  Original patch by Jeff McNeil.

..

.. bpo: 16409
.. date: 8268
.. nonce: Q4-W9i
.. section: Library

The reporthook callback made by the legacy urllib.request.urlretrieve API
now properly supplies a constant non-zero block_size as it did in Python 3.2
and 2.7.  This matches the behavior of urllib.request.URLopener.retrieve.

..

.. bpo: 16431
.. date: 8267
.. nonce: e4cPCA
.. section: Library

Use the type information when constructing a Decimal subtype from a Decimal
argument.

..

.. bpo: 15641
.. date: 8266
.. nonce: vCK1I7
.. section: Library

Clean up deprecated classes from importlib. Patch by Taras Lyapun.

..

.. bpo: 16350
.. date: 8265
.. nonce: b77tF6
.. section: Library

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.

..

.. bpo: 12759
.. date: 8264
.. nonce: c7p8aw
.. section: Library

sre_parse now raises a proper error when the name of the group is missing.
Initial patch by Serhiy Storchaka.

..

.. bpo: 16152
.. date: 8263
.. nonce: Lypvsp
.. section: Library

fix tokenize to ignore whitespace at the end of the code when no newline is
found.  Patch by Ned Batchelder.

..

.. bpo: 16284
.. date: 8262
.. nonce: fNPApL
.. section: Library

Prevent keeping unnecessary references to worker functions in
concurrent.futures ThreadPoolExecutor.

..

.. bpo: 16230
.. date: 8261
.. nonce: DC1cQ_
.. section: Library

Fix a crash in select.select() when one the lists changes size while
iterated on.  Patch by Serhiy Storchaka.

..

.. bpo: 16228
.. date: 8260
.. nonce: zsna-8
.. section: Library

Fix a crash in the json module where a list changes size while it is being
encoded.  Patch by Serhiy Storchaka.

..

.. bpo: 16351
.. date: 8259
.. nonce: pm5Uwv
.. section: Library

New function gc.get_stats() returns per-generation collection statistics.

..

.. bpo: 14897
.. date: 8258
.. nonce: OGbALj
.. section: Library

Enhance error messages of struct.pack and struct.pack_into. Patch by Matti
Mäki.

..

.. bpo: 16316
.. date: 8257
.. nonce: JuyfbK
.. section: Library

mimetypes now recognizes the .xz and .txz (.tar.xz) extensions. Patch by
Serhiy Storchaka.

..

.. bpo: 12890
.. date: 8256
.. nonce: kDaDxa
.. section: Library

cgitb no longer prints spurious <p> tags in text mode when the logdir option
is specified.

..

.. bpo: 16307
.. date: 8255
.. nonce: a50VwB
.. section: Library

Fix multiprocessing.Pool.map_async not calling its callbacks. Patch by Janne
Karila.

..

.. bpo: 16305
.. date: 8254
.. nonce: 16wmhi
.. section: Library

Fix a segmentation fault occurring when interrupting math.factorial.

..

.. bpo: 16116
.. date: 8253
.. nonce: vgGtQF
.. section: Library

Fix include and library paths to be correct when building C extensions in
venvs.

..

.. bpo: 16245
.. date: 8252
.. nonce: kJSC-a
.. section: Library

Fix the value of a few entities in html.entities.html5.

..

.. bpo: 16301
.. date: 8251
.. nonce: t0fnjV
.. section: Library

Fix the localhost verification in urllib/request.py for file:// urls.

..

.. bpo: 16250
.. date: 8250
.. nonce: ieVkF0
.. section: Library

Fix the invocations of URLError which had misplaced filename attribute for
exception.

..

.. bpo: 10836
.. date: 8249
.. nonce: Jh2ffY
.. section: Library

Fix exception raised when file not found in urlretrieve Initial patch by
Ezio Melotti.

..

.. bpo: 14398
.. date: 8248
.. nonce: jPT4ME
.. section: Library

Fix size truncation and overflow bugs in the bz2 module.

..

.. bpo: 12692
.. date: 8247
.. nonce: 2Mzlsy
.. section: Library

Fix resource leak in urllib.request when talking to an HTTP server that does
not include a ``Connection: close`` header in its responses.

..

.. bpo: 12034
.. date: 8246
.. nonce: btn3x3
.. section: Library

Fix bogus caching of result in check_GetFinalPathNameByHandle. Patch by
Atsuo Ishimoto.

..

.. bpo: 0
.. date: 8245
.. nonce: D_nbXg
.. section: Library

Improve performance of `lzma.LZMAFile` (see also issue #16034).

..

.. bpo: 16220
.. date: 8244
.. nonce: KAtvbg
.. section: Library

wsgiref now always calls close() on an iterable response. Patch by Brent
Tubbs.

..

.. bpo: 16270
.. date: 8243
.. nonce: O-WZPm
.. section: Library

urllib may hang when used for retrieving files via FTP by using a context
manager.  Patch by Giampaolo Rodola'.

..

.. bpo: 16461
.. date: 8242
.. nonce: 4XLB7L
.. section: Library

Wave library should be able to deal with 4GB wav files, and sample rate of
44100 Hz.

..

.. bpo: 16176
.. date: 8241
.. nonce: iZz-x5
.. section: Library

Properly identify Windows 8 via platform.platform()

..

.. bpo: 16088
.. date: 8240
.. nonce: xlvl5i
.. section: Library

BaseHTTPRequestHandler's send_error method includes a Content-Length header
in it's response now. Patch by Antoine Pitrou.

..

.. bpo: 16114
.. date: 8239
.. nonce: 99pl4N
.. section: Library

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.

..

.. bpo: 16169
.. date: 8238
.. nonce: zjnL7m
.. section: Library

Fix ctypes.WinError()'s confusion between errno and winerror.

..

.. bpo: 16110
.. date: 8237
.. nonce: fJpUiF
.. section: Library

logging.fileConfig now accepts a pre-initialised ConfigParser instance.

..

.. bpo: 1492704
.. date: 8236
.. nonce: 9rDdhr
.. section: Library

shutil.copyfile() raises a distinct SameFileError now if source and
destination are the same file. Patch by Atsuo Ishimoto.

..

.. bpo: 13896
.. date: 8235
.. nonce: iM0TJp
.. section: Library

Make shelf instances work with 'with' as context managers. Original patch by
Filip Gruszczyński.

..

.. bpo: 15417
.. date: 8234
.. nonce: Rd0mDH
.. section: Library

Add support for csh and fish in venv activation scripts.

..

.. bpo: 14377
.. date: 8233
.. nonce: P85CJN
.. section: Library

ElementTree.write and some of the module-level functions have a new
parameter - *short_empty_elements*. It controls how elements with no
contents are emitted.

..

.. bpo: 16089
.. date: 8232
.. nonce: L9jCK7
.. section: Library

Allow ElementTree.TreeBuilder to work again with a non-Element
element_factory (fixes a regression in SimpleTAL).

..

.. bpo: 9650
.. date: 8231
.. nonce: cENePt
.. section: Library

List commonly used format codes in time.strftime and time.strptime
docsttings.  Original patch by Mike Hoy.

..

.. bpo: 15452
.. date: 8230
.. nonce: qqK1EO
.. section: Library

logging configuration socket listener now has a verify option that allows an
application to apply a verification function to the received configuration
data before it is acted upon.

..

.. bpo: 16034
.. date: 8229
.. nonce: E_ZhP2
.. section: Library

Fix performance regressions in the new `bz2.BZ2File` implementation.
Initial patch by Serhiy Storchaka.

..

.. bpo: 0
.. date: 8228
.. nonce: f4R5V2
.. section: Library

`pty.spawn()` now returns the child process status returned by
`os.waitpid()`.

..

.. bpo: 15756
.. date: 8227
.. nonce: WAeC4R
.. section: Library

`subprocess.poll()` now properly handles `errno.ECHILD` to return a
returncode of 0 when the child has already exited or cannot be waited on.

..

.. bpo: 15323
.. date: 8226
.. nonce: L4bD_6
.. section: Library

Improve failure message of `Mock.assert_called_once_with()`.

..

.. bpo: 16064
.. date: 8225
.. nonce: oSOZ0F
.. section: Library

``unittest -m`` claims executable is "python", not "python3".

..

.. bpo: 12376
.. date: 8224
.. nonce: XQz0f2
.. section: Library

Pass on parameters in `TextTestResult.__init__()` super call.

..

.. bpo: 15222
.. date: 8223
.. nonce: 1KFZ58
.. section: Library

Insert blank line after each message in mbox mailboxes.

..

.. bpo: 16013
.. date: 8222
.. nonce: QtdOeT
.. section: Library

Fix `csv.Reader` parsing issue with ending quote characters. Patch by Serhiy
Storchaka.

..

.. bpo: 15421
.. date: 8221
.. nonce: bS-Hq5
.. section: Library

Fix an OverflowError in `Calendar.itermonthdates()` after
`datetime.MAXYEAR`.  Patch by Cédric Krier.

..

.. bpo: 16112
.. date: 8220
.. nonce: 7UQthq
.. section: Library

platform.architecture does not correctly escape argument to /usr/bin/file.
Patch by David Benjamin.

..

.. bpo: 15970
.. date: 8219
.. nonce: -hD9Ha
.. section: Library

`xml.etree.ElementTree` now serializes correctly the empty HTML elements
'meta' and 'param'.

..

.. bpo: 15842
.. date: 8218
.. nonce: _Kzj4o
.. section: Library

The `SocketIO.{readable,writable,seekable}` methods now raise ValueError
when the file-like object is closed.  Patch by Alessandro Moura.

..

.. bpo: 15876
.. date: 8217
.. nonce: hMWNMn
.. section: Library

Fix a refleak in the `curses` module: window.encoding.

..

.. bpo: 15881
.. date: 8216
.. nonce: 0CCbVo
.. section: Library

Fix `atexit` hook in `multiprocessing`.  Original patch by Chris McDonough.

..

.. bpo: 15841
.. date: 8215
.. nonce: UVh8eH
.. section: Library

The readable(), writable() and seekable() methods of `io.BytesIO` and
`io.StringIO` objects now raise ValueError when the object has been closed.
Patch by Alessandro Moura.

..

.. bpo: 15447
.. date: 8214
.. nonce: bdNIb1
.. section: Library

Use `subprocess.DEVNULL` in webbrowser, instead of opening `os.devnull`
explicitly and leaving it open.

..

.. bpo: 15509
.. date: 8213
.. nonce: q1hQFS
.. section: Library

`webbrowser.UnixBrowser` no longer passes empty arguments to Popen when
``%action`` substitutions produce empty strings.

..

.. bpo: 12776
.. date: 8212
.. nonce: XiJzFk
.. section: Library

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. (See also:
bpo-11839)

..

.. bpo: 15906
.. date: 8211
.. nonce: qeshwx
.. section: Library

Fix a regression in argparse caused by the preceding change, when
``action='append'``, ``type='str'`` and ``default=[]``.

..

.. bpo: 16113
.. date: 8210
.. nonce: tpf8Os
.. section: Library

Added sha3 module based on the Keccak reference implementation 3.2. The
`hashlib` module has four additional hash algorithms: `sha3_224`,
`sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common code
was moved from _hashopenssl.c to hashlib.h.

..

.. bpo: 0
.. date: 8209
.. nonce: t35X7X
.. section: Library

ctypes.call_commethod was removed, since its only usage was in the defunct
samples directory.

..

.. bpo: 16692
.. date: 8208
.. nonce: Hh7vnr
.. section: Library

Added TLSv1.1 and TLSv1.2 support for the ssl modules.

..

.. bpo: 16832
.. date: 8207
.. nonce: D7LpUw
.. section: Library

add abc.get_cache_token() to expose cache validity checking support in
ABCMeta.

..

.. bpo: 18429
.. date: 8206
.. nonce: F1lTq1
.. section: IDLE

Format / Format Paragraph, now works when comment blocks are selected. As
with text blocks, this works best when the selection only includes complete
lines.

..

.. bpo: 18226
.. date: 8205
.. nonce: 5HtrW1
.. section: IDLE

Add docstrings and unittests for FormatParagraph.py. Original patches by
Todd Rovito and Phil Webster.

..

.. bpo: 18279
.. date: 8204
.. nonce: UoF-oR
.. section: IDLE

Format - Strip trailing whitespace no longer marks a file as changed when it
has not been changed. This fix followed the addition of a test file
originally written by Phil Webster (the issue's main goal).

..

.. bpo: 7136
.. date: 8203
.. nonce: 7horQf
.. section: IDLE

In the Idle File menu, "New Window" is renamed "New File". Patch by Tal
Einat, Roget Serwy, and Todd Rovito.

..

.. bpo: 0
.. date: 8202
.. nonce: OsJiav
.. section: IDLE

Remove dead imports of imp.

..

.. bpo: 18196
.. date: 8201
.. nonce: hyO7x0
.. section: IDLE

Avoid displaying spurious SystemExit tracebacks.

..

.. bpo: 5492
.. date: 8200
.. nonce: LCx7lq
.. section: IDLE

Avoid traceback when exiting IDLE caused by a race condition.

..

.. bpo: 17511
.. date: 8199
.. nonce: 6XqdTH
.. section: IDLE

Keep IDLE find dialog open after clicking "Find Next". Original patch by
Sarah K.

..

.. bpo: 18055
.. date: 8198
.. nonce: e6MZXb
.. section: IDLE

Move IDLE off of imp and on to importlib.

..

.. bpo: 15392
.. date: 8197
.. nonce: ukT_lg
.. section: IDLE

Create a unittest framework for IDLE. Initial patch by Rajagopalasarma
Jayakrishnan. See Lib/idlelib/idle_test/README.txt for how to run Idle
tests.

..

.. bpo: 14146
.. date: 8196
.. nonce: -n5gzd
.. section: IDLE

Highlight source line while debugging on Windows.

..

.. bpo: 17838
.. date: 8195
.. nonce: -DDdhT
.. section: IDLE

Allow sys.stdin to be reassigned.

..

.. bpo: 13495
.. date: 8194
.. nonce: CqEc2d
.. section: IDLE

Avoid loading the color delegator twice in IDLE.

..

.. bpo: 17798
.. date: 8193
.. nonce: PVfMob
.. section: IDLE

Allow IDLE to edit new files when specified on command line.

..

.. bpo: 14735
.. date: 8192
.. nonce: lbbw49
.. section: IDLE

Update IDLE docs to omit "Control-z on Windows".

..

.. bpo: 17532
.. date: 8191
.. nonce: wgA70Z
.. section: IDLE

Always include Options menu for IDLE on OS X. Patch by Guilherme Simões.

..

.. bpo: 17585
.. date: 8190
.. nonce: oXlcVX
.. section: IDLE

Fixed IDLE regression. Now closes when using exit() or quit().

..

.. bpo: 17657
.. date: 8189
.. nonce: rGfxNo
.. section: IDLE

Show full Tk version in IDLE's about dialog. Patch by Todd Rovito.

..

.. bpo: 17613
.. date: 8188
.. nonce: MfAJ31
.. section: IDLE

Prevent traceback when removing syntax colorizer in IDLE.

..

.. bpo: 1207589
.. date: 8187
.. nonce: wqzkjh
.. section: IDLE

Backwards-compatibility patch for right-click menu in IDLE.

..

.. bpo: 16887
.. date: 8186
.. nonce: -tb-0g
.. section: IDLE

IDLE now accepts Cancel in tabify/untabify dialog box.

..

.. bpo: 17625
.. date: 8185
.. nonce: SoDm9J
.. section: IDLE

In IDLE, close the replace dialog after it is used.

..

.. bpo: 14254
.. date: 8184
.. nonce: heeMG-
.. section: IDLE

IDLE now handles readline correctly across shell restarts.

..

.. bpo: 17614
.. date: 8183
.. nonce: 9pmpYW
.. section: IDLE

IDLE no longer raises exception when quickly closing a file.

..

.. bpo: 6698
.. date: 8182
.. nonce: fXoiv2
.. section: IDLE

IDLE now opens just an editor window when configured to do so.

..

.. bpo: 8900
.. date: 8181
.. nonce: jkW99r
.. section: IDLE

Using keyboard shortcuts in IDLE to open a file no longer raises an
exception.

..

.. bpo: 6649
.. date: 8180
.. nonce: uwGice
.. section: IDLE

Fixed missing exit status in IDLE. Patch by Guilherme Polo.

..

.. bpo: 17114
.. date: 8179
.. nonce: vKMHae
.. section: IDLE

IDLE now uses non-strict config parser.

..

.. bpo: 9290
.. date: 8178
.. nonce: Msbacw
.. section: IDLE

In IDLE the sys.std* streams now implement io.TextIOBase interface and
support all mandatory methods and properties.

..

.. bpo: 5066
.. date: 8177
.. nonce: 005zjD
.. section: IDLE

Update IDLE docs. Patch by Todd Rovito.

..

.. bpo: 16829
.. date: 8176
.. nonce: u44Uel
.. section: IDLE

IDLE printing no longer fails if there are spaces or other special
characters in the file path.

..

.. bpo: 16491
.. date: 8175
.. nonce: xeXwAA
.. section: IDLE

IDLE now prints chained exception tracebacks.

..

.. bpo: 16819
.. date: 8174
.. nonce: xEntNh
.. section: IDLE

IDLE method completion now correctly works for bytes literals.

..

.. bpo: 16504
.. date: 8173
.. nonce: othtN_
.. section: IDLE

IDLE now catches SyntaxErrors raised by tokenizer. Patch by Roger Serwy.

..

.. bpo: 16511
.. date: 8172
.. nonce: yFDlh7
.. section: IDLE

Use default IDLE width and height if config param is not valid. Patch Serhiy
Storchaka.

..

.. bpo: 1207589
.. date: 8171
.. nonce: 0bmiue
.. section: IDLE

Add Cut/Copy/Paste items to IDLE right click Context Menu. Patch by Todd
Rovito.

..

.. bpo: 16123
.. date: 8170
.. nonce: btKEXc
.. section: IDLE

IDLE - deprecate running without a subprocess. Patch by Roger Serwy.

..

.. bpo: 1666318
.. date: 8169
.. nonce: OPrK2i
.. section: Tests

Add a test that shutil.copytree() retains directory permissions.  Patch by
Catherine Devlin.

..

.. bpo: 18273
.. date: 8168
.. nonce: t4fyCm
.. section: Tests

move the tests in Lib/test/json_tests to Lib/test/test_json and make them
discoverable by unittest.  Patch by Zachary Ware.

..

.. bpo: 0
.. date: 8167
.. nonce: wExQ77
.. section: Tests

Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).

..

.. bpo: 18396
.. date: 8166
.. nonce: 3gPC49
.. section: Tests

Fix spurious test failure in test_signal on Windows when faulthandler is
enabled (Patch by Jeremy Kloth)

..

.. bpo: 17046
.. date: 8165
.. nonce: mQoh7R
.. section: Tests

Fix broken test_executable_without_cwd in test_subprocess.

..

.. bpo: 15415
.. date: 8164
.. nonce: u-UTrH
.. section: Tests

Add new temp_dir() and change_cwd() context managers to test.support, and
refactor temp_cwd() to use them.  Patch by Chris Jerdonek.

..

.. bpo: 15494
.. date: 8163
.. nonce: 52m-vd
.. section: Tests

test.support is now a package rather than a module (Initial patch by Indra
Talip)

..

.. bpo: 17944
.. date: 8162
.. nonce: 6e9wcJ
.. section: Tests

test_zipfile now discoverable and uses subclassing to generate tests for
different compression types.  Fixed a bug with skipping some tests due to
use of exhausted iterators.

..

.. bpo: 18266
.. date: 8161
.. nonce: Fs0fT4
.. section: Tests

test_largefile now works with unittest test discovery and supports running
only selected tests.  Patch by Zachary Ware.

..

.. bpo: 17767
.. date: 8160
.. nonce: rObwV7
.. section: Tests

test_locale now works with unittest test discovery. Original patch by
Zachary Ware.

..

.. bpo: 18375
.. date: 8159
.. nonce: yMrtSQ
.. section: Tests

Assume --randomize when --randseed is used for running the testsuite.

..

.. bpo: 11185
.. date: 8158
.. nonce: McIHeT
.. section: Tests

Fix test_wait4 under AIX.  Patch by Sébastien Sablé.

..

.. bpo: 18207
.. date: 8157
.. nonce: QN93aB
.. section: Tests

Fix test_ssl for some versions of OpenSSL that ignore seconds in ASN1_TIME
fields.

..

.. bpo: 18094
.. date: 8156
.. nonce: EDwnjd
.. section: Tests

test_uuid no longer reports skipped tests as passed.

..

.. bpo: 17992
.. date: 8155
.. nonce: UQQWYc
.. section: Tests

Add timeouts to asyncore and asynchat tests so that they won't accidentally
hang.

..

.. bpo: 17833
.. date: 8154
.. nonce: AqQAlk
.. section: Tests

Fix test_gdb failures seen on machines where debug symbols for glibc are
available (seen on PPC64 Linux).

..

.. bpo: 7855
.. date: 8153
.. nonce: ZbX91d
.. section: Tests

Add tests for ctypes/winreg for issues found in IronPython. Initial patch by
Dino Viehland.

..

.. bpo: 11078
.. date: 8152
.. nonce: TuZjxB
.. section: Tests

test___all__ now checks for duplicates in __all__. Initial patch by R. David
Murray.

..

.. bpo: 17712
.. date: 8151
.. nonce: RqkHUB
.. section: Tests

Fix test_gdb failures on Ubuntu 13.04.

..

.. bpo: 17835
.. date: 8150
.. nonce: mJdR71
.. section: Tests

Fix test_io when the default OS pipe buffer size is larger than one million
bytes.

..

.. bpo: 17065
.. date: 8149
.. nonce: rql8lF
.. section: Tests

Use process-unique key for winreg tests to avoid failures if test is run
multiple times in parallel (eg: on a buildbot host).

..

.. bpo: 12820
.. date: 8148
.. nonce: HATljf
.. section: Tests

add tests for the xml.dom.minicompat module. Patch by John Chandler and Phil
Connell.

..

.. bpo: 17691
.. date: 8147
.. nonce: KHFcyE
.. section: Tests

test_univnewlines now works with unittest test discovery. Patch by Zachary
Ware.

..

.. bpo: 17790
.. date: 8146
.. nonce: JJXcrD
.. section: Tests

test_set now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17789
.. date: 8145
.. nonce: ILUl9_
.. section: Tests

test_random now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17779
.. date: 8144
.. nonce: f61EJr
.. section: Tests

test_osx_env now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17766
.. date: 8143
.. nonce: fGhYwN
.. section: Tests

test_iterlen now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17690
.. date: 8142
.. nonce: Tm3Owh
.. section: Tests

test_time now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17692
.. date: 8141
.. nonce: 6eSLWJ
.. section: Tests

test_sqlite now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 11995
.. date: 8140
.. nonce: varfN1
.. section: Tests

test_pydoc doesn't import all sys.path modules anymore.

..

.. bpo: 17448
.. date: 8139
.. nonce: E2kxQS
.. section: Tests

test_sax now skips if there are no xml parsers available instead of raising
an ImportError.

..

.. bpo: 11420
.. date: 8138
.. nonce: J5oaxT
.. section: Tests

make test suite pass with -B/DONTWRITEBYTECODE set. Initial patch by Thomas
Wouters.

..

.. bpo: 10652
.. date: 8137
.. nonce: hWhWD_
.. section: Tests

make tcl/tk tests run after __all__ test, patch by Zachary Ware.

..

.. bpo: 11963
.. date: 8136
.. nonce: _g8d_g
.. section: Tests

remove human verification from test_parser and test_subprocess.

..

.. bpo: 11732
.. date: 8135
.. nonce: c8z-Dq
.. section: Tests

add a new suppress_crash_popup() context manager to test.support that
disables crash popups on Windows and use it in test_faulthandler and
test_capi.

..

.. bpo: 13898
.. date: 8134
.. nonce: HeB5Ep
.. section: Tests

test_ssl no longer prints a spurious stack trace on Ubuntu.

..

.. bpo: 17283
.. date: 8133
.. nonce: rDD37m
.. section: Tests

Share code between `__main__.py` and `regrtest.py` in `Lib/test`.

..

.. bpo: 17249
.. date: 8132
.. nonce: wGvw7G
.. section: Tests

convert a test in test_capi to use unittest and reap threads.

..

.. bpo: 17107
.. date: 8131
.. nonce: rQeSWM
.. section: Tests

Test client-side SNI support in urllib.request thanks to the new server-side
SNI support in the ssl module.  Initial patch by Daniel Black.

..

.. bpo: 17041
.. date: 8130
.. nonce: QNrBhm
.. section: Tests

Fix testing when Python is configured with the --without-doc-strings.

..

.. bpo: 16923
.. date: 8129
.. nonce: gK2bSh
.. section: Tests

Fix ResourceWarnings in test_ssl.

..

.. bpo: 15539
.. date: 8128
.. nonce: a1_G0Q
.. section: Tests

Added regression tests for Tools/scripts/pindent.py.

..

.. bpo: 17479
.. date: 8127
.. nonce: e2vj2q
.. section: Tests

test_io now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17066
.. date: 8126
.. nonce: 6axkCO
.. section: Tests

test_robotparser now works with unittest test discovery. Patch by Zachary
Ware.

..

.. bpo: 17334
.. date: 8125
.. nonce: hOeO8N
.. section: Tests

test_index now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17333
.. date: 8124
.. nonce: wKzaNc
.. section: Tests

test_imaplib now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17082
.. date: 8123
.. nonce: B-o8aq
.. section: Tests

test_dbm* now work with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17079
.. date: 8122
.. nonce: Uz1Ysh
.. section: Tests

test_ctypes now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17304
.. date: 8121
.. nonce: HUHsX_
.. section: Tests

test_hash now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17303
.. date: 8120
.. nonce: TGUnon
.. section: Tests

test_future* now work with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 17163
.. date: 8119
.. nonce: RtwHDs
.. section: Tests

test_file now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 16925
.. date: 8118
.. nonce: SMQSIJ
.. section: Tests

test_configparser now works with unittest test discovery. Patch by Zachary
Ware.

..

.. bpo: 16918
.. date: 8117
.. nonce: Dw6bfJ
.. section: Tests

test_codecs now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 16919
.. date: 8116
.. nonce: RD7mec
.. section: Tests

test_crypt now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 16910
.. date: 8115
.. nonce: awigr8
.. section: Tests

test_bytes, test_unicode, and test_userstring now work with unittest test
discovery.  Patch by Zachary Ware.

..

.. bpo: 16905
.. date: 8114
.. nonce: 8SuIFn
.. section: Tests

test_warnings now works with unittest test discovery. Initial patch by
Berker Peksag.

..

.. bpo: 16898
.. date: 8113
.. nonce: 1pNH58
.. section: Tests

test_bufio now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 16888
.. date: 8112
.. nonce: yWvMUM
.. section: Tests

test_array now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 16896
.. date: 8111
.. nonce: 8uLSFW
.. section: Tests

test_asyncore now works with unittest test discovery. Patch by Zachary Ware.

..

.. bpo: 16897
.. date: 8110
.. nonce: aEwG-R
.. section: Tests

test_bisect now works with unittest test discovery. Initial patch by Zachary
Ware.

..

.. bpo: 16852
.. date: 8109
.. nonce: z4zef9
.. section: Tests

test_genericpath, test_posixpath, test_ntpath, and test_macpath now work
with unittest test discovery.  Patch by Zachary Ware.

..

.. bpo: 16748
.. date: 8108
.. nonce: 74HpRw
.. section: Tests

test_heapq now works with unittest test discovery.

..

.. bpo: 10646
.. date: 8107
.. nonce: -n9wSX
.. section: Tests

Tests rearranged for os.samefile/samestat to check for not just symlinks but
also hard links.

..

.. bpo: 15302
.. date: 8106
.. nonce: nohKYA
.. section: Tests

Switch regrtest from using getopt to using argparse.

..

.. bpo: 15324
.. date: 8105
.. nonce: mcS3I3
.. section: Tests

Fix regrtest parsing of --fromfile, --match, and --randomize options.

..

.. bpo: 16702
.. date: 8104
.. nonce: 3Xf_t-
.. section: Tests

test_urllib2_localnet tests now correctly ignores proxies for localhost
tests.

..

.. bpo: 16664
.. date: 8103
.. nonce: CxbZwX
.. section: Tests

Add regression tests for glob's behaviour concerning entries starting with a
".".  Patch by Sebastian Kreft.

..

.. bpo: 13390
.. date: 8102
.. nonce: CRkOlc
.. section: Tests

The ``-R`` option to regrtest now also checks for memory allocation leaks,
using :func:`sys.getallocatedblocks()`.

..

.. bpo: 16559
.. date: 8101
.. nonce: JvxWbq
.. section: Tests

Add more tests for the json module, including some from the official test
suite at json.org.  Patch by Serhiy Storchaka.

..

.. bpo: 16661
.. date: 8100
.. nonce: Qn2hnC
.. section: Tests

Fix the `os.getgrouplist()` test by not assuming that it gives the same
output as :command:`id -G`.

..

.. bpo: 16115
.. date: 8099
.. nonce: vhK6oh
.. section: Tests

Add some tests for the executable argument to subprocess.Popen().  Initial
patch by Kushal Das.

..

.. bpo: 16126
.. date: 8098
.. nonce: blh5K0
.. section: Tests

PyErr_Format format mismatch in _testcapimodule.c. Patch by Serhiy
Storchaka.

..

.. bpo: 15304
.. date: 8097
.. nonce: DhyMtI
.. section: Tests

Fix warning message when `os.chdir()` fails inside
`test.support.temp_cwd()`.  Patch by Chris Jerdonek.

..

.. bpo: 15802
.. date: 8096
.. nonce: 1duwD4
.. section: Tests

Fix test logic in `TestMaildir.test_create_tmp()`. Patch by Serhiy
Storchaka.

..

.. bpo: 15557
.. date: 8095
.. nonce: H9Mhea
.. section: Tests

Added a test suite for the webbrowser module, thanks to Anton Barkovsky.

..

.. bpo: 16698
.. date: 8094
.. nonce: RgmYjY
.. section: Tests

Skip posix test_getgroups when built with OS X deployment target prior to
10.6.

..

.. bpo: 16067
.. date: 8093
.. nonce: A9L5PU
.. section: Build

Add description into MSI file to replace installer's temporary name.

..

.. bpo: 18257
.. date: 8092
.. nonce: E-TNPc
.. section: Build

Fix readlink usage in python-config.  Install the python version again on
Darwin.

..

.. bpo: 18481
.. date: 8091
.. nonce: Is1C3p
.. section: Build

Add C coverage reporting with gcov and lcov. A new make target "coverage-
report" creates an instrumented Python build, runs unit tests and creates a
HTML. The report can be updated with "make coverage-lcov".

..

.. bpo: 17845
.. date: 8090
.. nonce: kMmKYt
.. section: Build

Clarified the message printed when some module are not built.

..

.. bpo: 18256
.. date: 8089
.. nonce: PiEkYT
.. section: Build

Compilation fix for recent AIX releases.  Patch by David Edelsohn.

..

.. bpo: 17547
.. date: 8088
.. nonce: yVllRd
.. section: Build

In configure, explicitly pass -Wformat for the benefit for GCC 4.8.

..

.. bpo: 15172
.. date: 8087
.. nonce: CpJRf2
.. section: Build

Document NASM 2.10+ as requirement for building OpenSSL 1.0.1 on Windows.

..

.. bpo: 17591
.. date: 8086
.. nonce: e9az4p
.. section: Build

Use lowercase filenames when including Windows header files. Patch by Roumen
Petrov.

..

.. bpo: 17550
.. date: 8085
.. nonce: zn8gOk
.. section: Build

Fix the --enable-profiling configure switch.

..

.. bpo: 17425
.. date: 8084
.. nonce: Ix2fQh
.. section: Build

Build with openssl 1.0.1d on Windows.

..

.. bpo: 16754
.. date: 8083
.. nonce: fLN-7H
.. section: Build

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.

..

.. bpo: 5033
.. date: 8082
.. nonce: HKAgDA
.. section: Build

Fix building of the sqlite3 extension module when the SQLite library version
has "beta" in it. Patch by Andreas Pelme.

..

.. bpo: 17228
.. date: 8081
.. nonce: CCkAM0
.. section: Build

Fix building without pymalloc.

..

.. bpo: 3718
.. date: 8080
.. nonce: n6-Cv2
.. section: Build

Use AC_ARG_VAR to set MACHDEP in configure.ac.

..

.. bpo: 16235
.. date: 8079
.. nonce: u8Yi12
.. section: Build

Implement python-config as a shell script.

..

.. bpo: 16769
.. date: 8078
.. nonce: bK11Wq
.. section: Build

Remove outdated Visual Studio projects.

..

.. bpo: 17031
.. date: 8077
.. nonce: 947KBS
.. section: Build

Fix running regen in cross builds.

..

.. bpo: 3754
.. date: 8076
.. nonce: sUdOUp
.. section: Build

fix typo in pthread AC_CACHE_VAL.

..

.. bpo: 15484
.. date: 8075
.. nonce: CgA5fS
.. section: Build

Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds; use
_PYTHON_PROJECT_BASE in distutils/sysconfig.py.

..

.. bpo: 0
.. date: 8074
.. nonce: eLqyZu
.. section: Build

Drop support for Windows 2000 (changeset e52df05b496a).

..

.. bpo: 17029
.. date: 8073
.. nonce: dUd1NT
.. section: Build

Let h2py search the multiarch system include directory.

..

.. bpo: 16953
.. date: 8072
.. nonce: tW1KVY
.. section: Build

Fix socket module compilation on platforms with HAVE_BROKEN_POLL. Patch by
Jeffrey Armstrong.

..

.. bpo: 16320
.. date: 8071
.. nonce: wSizMv
.. section: Build

Remove redundant Makefile dependencies for strings and bytes.

..

.. bpo: 0
.. date: 8070
.. nonce: WRrrlF
.. section: Build

Cross compiling needs host and build settings. configure no longer creates a
broken PYTHON_FOR_BUILD variable when --build is missing.

..

.. bpo: 0
.. date: 8069
.. nonce: R2awqG
.. section: Build

Fix cross compiling issue in setup.py, ensure that lib_dirs and inc_dirs are
defined in cross compiling mode, too.

..

.. bpo: 16836
.. date: 8068
.. nonce: JZ-zO7
.. section: Build

Enable IPv6 support even if IPv6 is disabled on the build host.

..

.. bpo: 16593
.. date: 8067
.. nonce: mS-VZr
.. section: Build

Have BSD 'make -s' do the right thing, thanks to Daniel Shahaf

..

.. bpo: 16262
.. date: 8066
.. nonce: puaCXo
.. section: Build

fix out-of-src-tree builds, if mercurial is not installed.

..

.. bpo: 15298
.. date: 8065
.. nonce: xiQHlO
.. section: Build

ensure _sysconfigdata is generated in build directory, not source directory.

..

.. bpo: 15833
.. date: 8064
.. nonce: tqz7oy
.. section: Build

Fix a regression in 3.3 that resulted in exceptions being raised if
importlib failed to write byte-compiled files.  This affected attempts to
build Python out-of-tree from a read-only source directory.

..

.. bpo: 15923
.. date: 8063
.. nonce: a2-GWK
.. section: Build

Fix a mistake in ``asdl_c.py`` that resulted in a TypeError after
2801bf875a24 (see #15801).

..

.. bpo: 16135
.. date: 8062
.. nonce: G5PgZc
.. section: Build

Remove OS/2 support.

..

.. bpo: 15819
.. date: 8061
.. nonce: VE2bTI
.. section: Build

Make sure we can build Python out-of-tree from a read-only source directory.
(Somewhat related to issue #9860.)

..

.. bpo: 15587
.. date: 8060
.. nonce: gR7vei
.. section: Build

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.

..

.. bpo: 17161
.. date: 8059
.. nonce: AT7PDZ
.. section: Build

make install now also installs a python3 man page.

..

.. bpo: 18351
.. date: 8058
.. nonce: pODT4P
.. section: C API

Fix various issues in a function in importlib provided to help
PyImport_ExecCodeModuleWithPathnames() (and thus by extension
PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()).

..

.. bpo: 9369
.. date: 8057
.. nonce: z_ZQqc
.. section: C API

The types of `char*` arguments of PyObject_CallFunction() and
PyObject_CallMethod() now changed to `const char*`.  Based on patches by
Jörg Müller and Lars Buitinck.

..

.. bpo: 17206
.. date: 8056
.. nonce: yljYPd
.. section: C API

Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now expand their
arguments once instead of multiple times.  Patch written by Illia
Polosukhin.

..

.. bpo: 17522
.. date: 8055
.. nonce: 7R55LY
.. section: C API

Add the PyGILState_Check() API.

..

.. bpo: 17327
.. date: 8054
.. nonce: PVFW3J
.. section: C API

Add PyDict_SetDefault.

..

.. bpo: 16881
.. date: 8053
.. nonce: 8SMude
.. section: C API

Fix Py_ARRAY_LENGTH macro for GCC < 3.1.

..

.. bpo: 16505
.. date: 8052
.. nonce: NiEndF
.. section: C API

Remove unused Py_TPFLAGS_INT_SUBCLASS.

..

.. bpo: 16086
.. date: 8051
.. nonce: z-DFqk
.. section: C API

PyTypeObject.tp_flags and PyType_Spec.flags are now unsigned (unsigned long
and unsigned int) to avoid an undefined behaviour with
Py_TPFLAGS_TYPE_SUBCLASS ((1 << 31). PyType_GetFlags() result type is now
unsigned too (unsigned long, instead of long).

..

.. bpo: 16166
.. date: 8050
.. nonce: PDTSqL
.. section: C API

Add PY_LITTLE_ENDIAN and PY_BIG_ENDIAN macros and unified endianness
detection and handling.

..

.. bpo: 17701
.. date: 8049
.. nonce: FtTZ66
.. section: Documentation

Improving strftime documentation.

..

.. bpo: 18440
.. date: 8048
.. nonce: LyvSOC
.. section: Documentation

Clarify that `hash()` can truncate the value returned from an object's
custom `__hash__()` method.

..

.. bpo: 17844
.. date: 8047
.. nonce: V3aWU6
.. section: Documentation

Add links to encoders and decoders for bytes-to-bytes codecs.

..

.. bpo: 14097
.. date: 8046
.. nonce: xeOs59
.. section: Documentation

improve the "introduction" page of the tutorial.

..

.. bpo: 17977
.. date: 8045
.. nonce: 5f6eWJ
.. section: Documentation

The documentation for the cadefault argument's default value in
urllib.request.urlopen() is fixed to match the code.

..

.. bpo: 6696
.. date: 8044
.. nonce: -aRVrf
.. section: Documentation

add documentation for the Profile objects, and improve profile/cProfile
docs.  Patch by Tom Pinckney.

..

.. bpo: 15940
.. date: 8043
.. nonce: XL62xu
.. section: Documentation

Specify effect of locale on time functions.

..

.. bpo: 17538
.. date: 8042
.. nonce: M8FVLz
.. section: Documentation

Document XML vulnerabilties

..

.. bpo: 16642
.. date: 8041
.. nonce: Cee7KE
.. section: Documentation

sched.scheduler timefunc initial default is time.monotonic. Patch by
Ramchandra Apte

..

.. bpo: 17047
.. date: 8040
.. nonce: sVzpby
.. section: Documentation

remove doubled words in docs and docstrings reported by Serhiy Storchaka and
Matthew Barnett.

..

.. bpo: 15465
.. date: 8039
.. nonce: yN2tkV
.. section: Documentation

Document the versioning macros in the C API docs rather than the standard
library docs. Patch by Kushal Das.

..

.. bpo: 16406
.. date: 8038
.. nonce: Q6DEK3
.. section: Documentation

Combine the pages for uploading and registering to PyPI.

..

.. bpo: 16403
.. date: 8037
.. nonce: wPuYgA
.. section: Documentation

Document how distutils uses the maintainer field in PKG-INFO. Patch by Jyrki
Pulliainen.

..

.. bpo: 16695
.. date: 8036
.. nonce: O3-q4k
.. section: Documentation

Document how glob handles filenames starting with a dot. Initial patch by
Jyrki Pulliainen.

..

.. bpo: 8890
.. date: 8035
.. nonce: ldKgWT
.. section: Documentation

Stop advertising an insecure practice by replacing uses of the /tmp
directory with better alternatives in the documentation. Patch by Geoff
Wilson.

..

.. bpo: 17203
.. date: 8034
.. nonce: b42JWx
.. section: Documentation

add long option names to unittest discovery docs.

..

.. bpo: 13094
.. date: 8033
.. nonce: ujdNxz
.. section: Documentation

add "Why do lambdas defined in a loop with different values all return the
same result?" programming FAQ.

..

.. bpo: 14901
.. date: 8032
.. nonce: o_thZo
.. section: Documentation

Update portions of the Windows FAQ. Patch by Ashish Nitin Patil.

..

.. bpo: 16267
.. date: 8031
.. nonce: SSKvue
.. section: Documentation

Better document the 3.3+ approach to combining @abstractmethod with
@staticmethod, @classmethod and @property

..

.. bpo: 15209
.. date: 8030
.. nonce: w1UuQK
.. section: Documentation

Clarify exception chaining description in exceptions module documentation

..

.. bpo: 15990
.. date: 8029
.. nonce: 41C5_M
.. section: Documentation

Improve argument/parameter documentation.

..

.. bpo: 16209
.. date: 8028
.. nonce: 8-hM8N
.. section: Documentation

Move the documentation for the str built-in function to a new str class
entry in the "Text Sequence Type" section.

..

.. bpo: 13538
.. date: 8027
.. nonce: 6bfAto
.. section: Documentation

Improve str() and object.__str__() documentation.

..

.. bpo: 16489
.. date: 8026
.. nonce: N4Xo3-
.. section: Documentation

Make it clearer that importlib.find_loader() needs parent packages to be
explicitly imported.

..

.. bpo: 16400
.. date: 8025
.. nonce: kDLZRV
.. section: Documentation

Update the description of which versions of a given package PyPI displays.

..

.. bpo: 15677
.. date: 8024
.. nonce: _0vY-h
.. section: Documentation

Document that zlib and gzip accept a compression level of 0 to mean 'no
compression'. Patch by Brian Brazil.

..

.. bpo: 16197
.. date: 8023
.. nonce: LT1sjI
.. section: Documentation

Update winreg docstrings and documentation to match code. Patch by Zachary
Ware.

..

.. bpo: 8040
.. date: 8022
.. nonce: R8VAys
.. section: Documentation

added a version switcher to the documentation.  Patch by Yury Selivanov.

..

.. bpo: 16241
.. date: 8021
.. nonce: LfdE7f
.. section: Documentation

Document -X faulthandler command line option. Patch by Marek Šuppa.

..

.. bpo: 0
.. date: 8020
.. nonce: tWKgrg
.. section: Documentation

Additional comments and some style changes in the concurrent.futures URL
retrieval example

..

.. bpo: 16115
.. date: 8019
.. nonce: Ba1MH_
.. section: Documentation

Improve subprocess.Popen() documentation around args, shell, and executable
arguments.

..

.. bpo: 13498
.. date: 8018
.. nonce: LI0aQ4
.. section: Documentation

Clarify docs of os.makedirs()'s exist_ok argument.  Done with great native-
speaker help from R. David Murray.

..

.. bpo: 15533
.. date: 8017
.. nonce: oRcsqW
.. section: Documentation

Clarify docs and add tests for `subprocess.Popen()`'s cwd argument.

..

.. bpo: 15979
.. date: 8016
.. nonce: UATtRZ
.. section: Documentation

Improve timeit documentation.

..

.. bpo: 16036
.. date: 8015
.. nonce: ITDZx_
.. section: Documentation

Improve documentation of built-in `int()`'s signature and arguments.

..

.. bpo: 15935
.. date: 8014
.. nonce: 49QYHM
.. section: Documentation

Clarification of `argparse` docs, re: add_argument() type and default
arguments.  Patch contributed by Chris Jerdonek.

..

.. bpo: 11964
.. date: 8013
.. nonce: TswBww
.. section: Documentation

Document a change in v3.2 to the behavior of the indent parameter of json
encoding operations.

..

.. bpo: 15116
.. date: 8012
.. nonce: uDQI_8
.. section: Documentation

Remove references to appscript as it is no longer being supported.

..

.. bpo: 18817
.. date: 8011
.. nonce: b4b2nk
.. section: Tools/Demos

Fix a resource warning in Lib/aifc.py demo.  Patch by Vajrasky Kok.

..

.. bpo: 18439
.. date: 8010
.. nonce: W9DxeL
.. section: Tools/Demos

Make patchcheck work on Windows for ACKS, NEWS.

..

.. bpo: 18448
.. date: 8009
.. nonce: eLT81k
.. section: Tools/Demos

Fix a typo in Tools/demo/eiffel.py.

..

.. bpo: 18457
.. date: 8008
.. nonce: fTGIAR
.. section: Tools/Demos

Fixed saving of formulas and complex numbers in Tools/demo/ss1.py.

..

.. bpo: 18449
.. date: 8007
.. nonce: ufcaWC
.. section: Tools/Demos

Make Tools/demo/ss1.py work again on Python 3.  Patch by Févry Thibault.

..

.. bpo: 12990
.. date: 8006
.. nonce: E1geL-
.. section: Tools/Demos

The "Python Launcher" on OSX could not launch python scripts that have paths
that include wide characters.

..

.. bpo: 15239
.. date: 8005
.. nonce: uzPBlK
.. section: Tools/Demos

Make mkstringprep.py work again on Python 3.

..

.. bpo: 17028
.. date: 8004
.. nonce: d0Ryfg
.. section: Tools/Demos

Allowed Python arguments to be supplied to the Windows launcher.

..

.. bpo: 17156
.. date: 8003
.. nonce: zmokst
.. section: Tools/Demos

pygettext.py now detects the encoding of source files and correctly writes
and escapes non-ascii characters.

..

.. bpo: 15539
.. date: 8002
.. nonce: 6bqqV-
.. section: Tools/Demos

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.

..

.. bpo: 11797
.. date: 8001
.. nonce: 2UOmWr
.. section: Tools/Demos

Add a 2to3 fixer that maps reload() to imp.reload().

..

.. bpo: 10966
.. date: 8000
.. nonce: WsfpDc
.. section: Tools/Demos

Remove the concept of unexpected skipped tests.

..

.. bpo: 9893
.. date: 7999
.. nonce: pJeYiB
.. section: Tools/Demos

Removed the Misc/Vim directory.

..

.. bpo: 0
.. date: 7998
.. nonce: mdt8FR
.. section: Tools/Demos

Removed the Misc/TextMate directory.

..

.. bpo: 16245
.. date: 7997
.. nonce: eZNpI-
.. section: Tools/Demos

Add the Tools/scripts/parse_html5_entities.py script to parse the list of
HTML5 entities and update the html.entities.html5 dictionary.

..

.. bpo: 15378
.. date: 7996
.. nonce: IO1T92
.. section: Tools/Demos

Fix Tools/unicode/comparecodecs.py.  Patch by Serhiy Storchaka.

..

.. bpo: 16549
.. date: 7995
.. nonce: 2Pj5iC
.. section: Tools/Demos

Make json.tool work again on Python 3 and add tests. Initial patch by Berker
Peksag and Serhiy Storchaka.

..

.. bpo: 13301
.. date: 7994
.. nonce: A4WOk5
.. section: Tools/Demos

use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py. Patch by
Serhiy Storchaka.

..

.. bpo: 18569
.. date: 7993
.. nonce: 0L-xR0
.. section: Windows

The installer now adds .py to the PATHEXT variable when extensions are
registered. Patch by Paul Moore.