cpython/Misc/NEWS.d/3.6.0b3.rst

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.. bpo: 28128
.. date: 9445
.. nonce: Lc2sFu
.. release date: 2016-10-31
.. section: Core and Builtins
Deprecation warning for invalid str and byte escape sequences now prints
better information about where the error occurs. Patch by Serhiy Storchaka
and Eric Smith.
..
.. bpo: 28509
.. date: 9444
.. nonce: _Fa4Uq
.. section: Core and Builtins
dict.update() no longer allocate unnecessary large memory.
..
.. bpo: 28426
.. date: 9443
.. nonce: E_quyK
.. section: Core and Builtins
Fixed potential crash in PyUnicode_AsDecodedObject() in debug build.
..
.. bpo: 28517
.. date: 9442
.. nonce: ExPkm9
.. section: Core and Builtins
Fixed of-by-one error in the peephole optimizer that caused keeping
unreachable code.
..
.. bpo: 28214
.. date: 9441
.. nonce: 6ECJox
.. section: Core and Builtins
Improved exception reporting for problematic __set_name__ attributes.
..
.. bpo: 23782
.. date: 9440
.. nonce: lonDzj
.. section: Core and Builtins
Fixed possible memory leak in _PyTraceback_Add() and exception loss in
PyTraceBack_Here().
..
.. bpo: 28471
.. date: 9439
.. nonce: Vd5pv7
.. section: Core and Builtins
Fix "Python memory allocator called without holding the GIL" crash in
socket.setblocking.
..
.. bpo: 26128
.. date: 9438
.. nonce: IEF1cf
.. section: Library
Added keyword-only arguments support for subprocess.STARTUPINFO
..
.. bpo: 27517
.. date: 9437
.. nonce: 1CYM8A
.. section: Library
LZMA compressor and decompressor no longer raise exceptions if given empty
data twice. Patch by Benjamin Fogle.
..
.. bpo: 28549
.. date: 9436
.. nonce: ShnM2y
.. section: Library
Fixed segfault in curses's addch() with ncurses6.
..
.. bpo: 28449
.. date: 9435
.. nonce: 5JK6ES
.. section: Library
tarfile.open() with mode "r" or "r:" now tries to open a tar file with
compression before trying to open it without compression. Otherwise it had
50% chance failed with ignore_zeros=True.
..
.. bpo: 23262
.. date: 9434
.. nonce: 6EVB7N
.. section: Library
The webbrowser module now supports Firefox 36+ and derived browsers. Based
on patch by Oleg Broytman.
..
.. bpo: 27939
.. date: 9433
.. nonce: mTfADV
.. section: Library
Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused by
representing the scale as float value internally in Tk. tkinter.IntVar now
works if float value is set to underlying Tk variable.
..
.. bpo: 18844
.. date: 9432
.. nonce: oif1-H
.. section: Library
The various ways of specifying weights for random.choices() now produce the
same result sequences.
..
.. bpo: 28255
.. date: 9431
.. nonce: _ZH4wm
.. section: Library
calendar.TextCalendar().prmonth() no longer prints a space at the start of
new line after printing a month's calendar. Patch by Xiang Zhang.
..
.. bpo: 20491
.. date: 9430
.. nonce: ObgnQ2
.. section: Library
The textwrap.TextWrapper class now honors non-breaking spaces. Based on
patch by Kaarle Ritvanen.
..
.. bpo: 28353
.. date: 9429
.. nonce: sKGbLL
.. section: Library
os.fwalk() no longer fails on broken links.
..
.. bpo: 28430
.. date: 9428
.. nonce: 4MiEYT
.. section: Library
Fix iterator of C implemented asyncio.Future doesn't accept non-None value
is passed to it.send(val).
..
.. bpo: 27025
.. date: 9427
.. nonce: foAViS
.. section: Library
Generated names for Tkinter widgets now start by the "!" prefix for
readability.
..
.. bpo: 25464
.. date: 9426
.. nonce: HDUTCu
.. section: Library
Fixed HList.header_exists() in tkinter.tix module by addin a workaround to
Tix library bug.
..
.. bpo: 28488
.. date: 9425
.. nonce: TgO112
.. section: Library
shutil.make_archive() no longer adds entry "./" to ZIP archive.
..
.. bpo: 25953
.. date: 9424
.. nonce: EKKJAQ
.. section: Library
re.sub() now raises an error for invalid numerical group reference in
replacement template even if the pattern is not found in the string. Error
message for invalid group reference now includes the group index and the
position of the reference. Based on patch by SilentGhost.
..
.. bpo: 18219
.. date: 9423
.. nonce: 1ANQN1
.. section: Library
Optimize csv.DictWriter for large number of columns. Patch by Mariatta
Wijaya.
..
.. bpo: 28448
.. date: 9422
.. nonce: 5bduWe
.. section: Library
Fix C implemented asyncio.Future didn't work on Windows.
..
.. bpo: 28480
.. date: 9421
.. nonce: 9lHw6m
.. section: Library
Fix error building socket module when multithreading is disabled.
..
.. bpo: 24452
.. date: 9420
.. nonce: m9Kyg3
.. section: Library
Make webbrowser support Chrome on Mac OS X.
..
.. bpo: 20766
.. date: 9419
.. nonce: 4kvCzx
.. section: Library
Fix references leaked by pdb in the handling of SIGINT handlers.
..
.. bpo: 28492
.. date: 9418
.. nonce: pFRLQE
.. section: Library
Fix how StopIteration exception is raised in _asyncio.Future.
..
.. bpo: 28500
.. date: 9417
.. nonce: NINKzZ
.. section: Library
Fix asyncio to handle async gens GC from another thread.
..
.. bpo: 26923
.. date: 9416
.. nonce: 8dh3AV
.. section: Library
Fix asyncio.Gather to refuse being cancelled once all children are done.
Patch by Johannes Ebke.
..
.. bpo: 26796
.. date: 9415
.. nonce: TZyAfJ
.. section: Library
Don't configure the number of workers for default threadpool executor.
Initial patch by Hans Lawrenz.
..
.. bpo: 28544
.. date: 9414
.. nonce: KD1oFP
.. section: Library
Implement asyncio.Task in C.
..
.. bpo: 28522
.. date: 9413
.. nonce: XHMQa7
.. section: Windows
Fixes mishandled buffer reallocation in getpathp.c
..
.. bpo: 28444
.. date: 9412
.. nonce: zkc9nT
.. section: Build
Fix missing extensions modules when cross compiling.
..
.. bpo: 28208
.. date: 9411
.. nonce: DtoP1i
.. section: Build
Update Windows build and OS X installers to use SQLite 3.14.2.
..
.. bpo: 28248
.. date: 9410
.. nonce: KY_-en
.. section: Build
Update Windows build and OS X installers to use OpenSSL 1.0.2j.
..
.. bpo: 26944
.. date: 9409
.. nonce: ChZ_BO
.. section: Tests
Fix test_posix for Android where 'id -G' is entirely wrong or missing the
effective gid.
..
.. bpo: 28409
.. date: 9408
.. nonce: Q2IlxJ
.. section: Tests
regrtest: fix the parser of command line arguments.