Python News
+++++++++++
- What's New in Python 3.7.0 alpha 1
- ==================================
++What's New in Python 3.7.0 alpha 1?
++===================================
+
+*Release date: XXXX-XX-XX*
+
+Core and Builtins
+-----------------
+
+- Issue #28927: bytes.fromhex() and bytearray.fromhex() now ignore all ASCII
+ whitespace, not only spaces. Patch by Robert Xiao.
+
+- Issue #28932: Do not include <sys/random.h> if it does not exist.
+
+- Issue #25677: Correct the positioning of the syntax error caret for
+ indented blocks. Based on patch by Michael Layzell.
+
+- Issue #29000: Fixed bytes formatting of octals with zero padding in alternate
+ form.
+
+- Issue #18896: Python function can now have more than 255 parameters.
+ collections.namedtuple() now supports tuples with more than 255 elements.
+
+- Issue #28596: The preferred encoding is UTF-8 on Android. Patch written by
+ Chi Hsuan Yen.
+
+- Issue #26919: On Android, operating system data is now always encoded/decoded
+ to/from UTF-8, instead of the locale encoding to avoid inconsistencies with
+ os.fsencode() and os.fsdecode() which are already using UTF-8.
+
+- Issue #28991: functools.lru_cache() was susceptible to an obscure reentrancy
+ bug triggerable by a monkey-patched len() function.
+
+- Issue #28147: Fix a memory leak in split-table dictionaries: setattr()
+ must not convert combined table into split table. Patch written by INADA
+ Naoki.
+
+- Issue #28739: f-string expressions are no longer accepted as docstrings and
+ by ast.literal_eval() even if they do not include expressions.
+
+- Issue #28512: Fixed setting the offset attribute of SyntaxError by
+ PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject().
+
+- Issue #28918: Fix the cross compilation of xxlimited when Python has been
+ built with Py_DEBUG defined.
+
+- Issue #23722: Rather than silently producing a class that doesn't support
+ zero-argument ``super()`` in methods, failing to pass the new
+ ``__classcell__`` namespace entry up to ``type.__new__`` now results in a
+ ``DeprecationWarning`` and a class that supports zero-argument ``super()``.
+
+- Issue #28797: Modifying the class __dict__ inside the __set_name__ method of
+ a descriptor that is used inside that class no longer prevents calling the
+ __set_name__ method of other descriptors.
+
+- Issue #28799: Remove the ``PyEval_GetCallStats()`` function and deprecate
+ the untested and undocumented ``sys.callstats()`` function. Remove the
+ ``CALL_PROFILE`` special build: use the :func:`sys.setprofile` function,
+ :mod:`cProfile` or :mod:`profile` to profile function calls.
+
+- Issue #12844: More than 255 arguments can now be passed to a function.
+
+- Issue #28782: Fix a bug in the implementation ``yield from`` when checking
+ if the next instruction is YIELD_FROM. Regression introduced by WORDCODE
+ (issue #26647).
+
+- Issue #28774: Fix error position of the unicode error in ASCII and Latin1
+ encoders when a string returned by the error handler contains multiple
+ non-encodable characters (non-ASCII for the ASCII codec, characters out
+ of the U+0000-U+00FF range for Latin1).
+
+- Issue #28731: Optimize _PyDict_NewPresized() to create correct size dict.
+ Improve speed of dict literal with constant keys up to 30%.
+
+- Issue #28532: Show sys.version when -V option is supplied twice.
+
+- Issue #27100: The with-statement now checks for __enter__ before it
+ checks for __exit__. This gives less confusing error messages when
+ both methods are missing. Patch by Jonathan Ellington.
+
+- Issue #28746: Fix the set_inheritable() file descriptor method on platforms
+ that do not have the ioctl FIOCLEX and FIONCLEX commands.
+
+- Issue #26920: Fix not getting the locale's charset upon initializing the
+ interpreter, on platforms that do not have langinfo.
+
+- Issue #28648: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X
+ when decode astral characters. Patch by Xiang Zhang.
+
+- Issue #28665: Improve speed of the STORE_DEREF opcode by 40%.
+
+- Issue #19398: Extra slash no longer added to sys.path components in case of
+ empty compile-time PYTHONPATH components.
+
+- Issue #28621: Sped up converting int to float by reusing faster bits counting
+ implementation. Patch by Adrian Wielgosik.
+
+- Issue #28580: Optimize iterating split table values.
+ Patch by Xiang Zhang.
+
+- Issue #28583: PyDict_SetDefault didn't combine split table when needed.
+ Patch by Xiang Zhang.
+
+- Issue #28128: 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.
+
+- Issue #28509: dict.update() no longer allocate unnecessary large memory.
+
+- Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug
+ build.
+
+- Issue #28517: Fixed of-by-one error in the peephole optimizer that caused
+ keeping unreachable code.
+
+- Issue #28214: Improved exception reporting for problematic __set_name__
+ attributes.
+
+- Issue #23782: Fixed possible memory leak in _PyTraceback_Add() and exception
+ loss in PyTraceBack_Here().
+
+- Issue #28183: Optimize and cleanup dict iteration.
+
+- Issue #26081: Added C implementation of asyncio.Future.
+ Original patch by Yury Selivanov.
+
+- Issue #28379: Added sanity checks and tests for PyUnicode_CopyCharacters().
+ Patch by Xiang Zhang.
+
+- Issue #28376: The type of long range iterator is now registered as Iterator.
+ Patch by Oren Milman.
+
+- Issue #28376: Creating instances of range_iterator by calling range_iterator
+ type now is disallowed. Calling iter() on range instance is the only way.
+ Patch by Oren Milman.
+
+- Issue #26906: Resolving special methods of uninitialized type now causes
+ implicit initialization of the type instead of a fail.
+
+- Issue #18287: PyType_Ready() now checks that tp_name is not NULL.
+ Original patch by Niklas Koep.
+
+- Issue #24098: Fixed possible crash when AST is changed in process of
+ compiling it.
+
+- Issue #28201: Dict reduces possibility of 2nd conflict in hash table when
+ hashes have same lower bits.
+
+- Issue #28350: String constants with null character no longer interned.
+
+- Issue #26617: Fix crash when GC runs during weakref callbacks.
+
+- Issue #27942: String constants now interned recursively in tuples and frozensets.
+
+- Issue #28289: ImportError.__init__ now resets not specified attributes.
+
+- Issue #21578: Fixed misleading error message when ImportError called with
+ invalid keyword args.
+
+- Issue #28203: Fix incorrect type in complex(1.0, {2:3}) error message.
+ Patch by Soumya Sharma.
+
+- Issue #28086: Single var-positional argument of tuple subtype was passed
+ unscathed to the C-defined function. Now it is converted to exact tuple.
+
+- Issue #28214: Now __set_name__ is looked up on the class instead of the
+ instance.
+
+- Issue #27955: Fallback on reading /dev/urandom device when the getrandom()
+ syscall fails with EPERM, for example when blocked by SECCOMP.
+
+- Issue #28192: Don't import readline in isolated mode.
+
+- Issue #27441: Remove some redundant assignments to ob_size in longobject.c.
+ Thanks Oren Milman.
+
+- Issue #27222: Clean up redundant code in long_rshift function. Thanks
+ Oren Milman.
+
+- Upgrade internal unicode databases to Unicode version 9.0.0.
+
+- Issue #28131: Fix a regression in zipimport's compile_source(). zipimport
+ should use the same optimization level as the interpreter.
+
+- Issue #28126: Replace Py_MEMCPY with memcpy(). Visual Studio can properly
+ optimize memcpy().
+
+- Issue #28120: Fix dict.pop() for splitted dictionary when trying to remove a
+ "pending key" (Not yet inserted in split-table). Patch by Xiang Zhang.
+
+- Issue #26182: Raise DeprecationWarning when async and await keywords are
+ used as variable/attribute/class/function name.
+
+- Issue #26182: Fix a refleak in code that raises DeprecationWarning.
+
+- Issue #28721: Fix asynchronous generators aclose() and athrow() to
+ handle StopAsyncIteration propagation properly.
+
+- Issue #26110: Speed-up method calls: add LOAD_METHOD and CALL_METHOD
+ opcodes.
+
+Library
+-------
+
+- Issue 28923: Remove editor artifacts from Tix.py.
+
+- Issue #28871: Fixed a crash when deallocate deep ElementTree.
+
+- Issue #19542: Fix bugs in WeakValueDictionary.setdefault() and
+ WeakValueDictionary.pop() when a GC collection happens in another
+ thread.
+
+- Issue #20191: Fixed a crash in resource.prlimit() when pass a sequence that
+ doesn't own its elements as limits.
+
+- Issue #16255: subprocess.Popen uses /system/bin/sh on Android as the shell,
+ instead of /bin/sh.
+
+- Issue #28779: multiprocessing.set_forkserver_preload() would crash the
+ forkserver process if a preloaded module instantiated some
+ multiprocessing objects such as locks.
+
+- Issue #26937: The chown() method of the tarfile.TarFile class does not fail
+ now when the grp module cannot be imported, as for example on Android
+ platforms.
+
+- Issue #28847: dbm.dumb now supports reading read-only files and no longer
+ writes the index file when it is not changed. A deprecation warning is now
+ emitted if the index file is missed and recreated in the 'r' and 'w' modes
+ (will be an error in future Python releases).
+
+- Issue #27030: Unknown escapes consisting of ``'\'`` and an ASCII letter in
+ re.sub() replacement templates regular expressions now are errors.
+
+- Issue #28835: Fix a regression introduced in warnings.catch_warnings():
+ call warnings.showwarning() if it was overriden inside the context manager.
+
+- Issue #27172: To assist with upgrades from 2.7, the previously documented
+ deprecation of ``inspect.getfullargspec()`` has been reversed. This decision
+ may be revisited again after the Python 2.7 branch is no longer officially
+ supported.
+
+- Issue #28740: Add sys.getandroidapilevel(): return the build time API version
+ of Android as an integer. Function only available on Android.
+
+- Issue #26273: Add new :data:`socket.TCP_CONGESTION` (Linux 2.6.13) and
+ :data:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
+ Omar Sandoval.
+
+- Issue #28752: Restored the __reduce__() methods of datetime objects.
+
+- Issue #28727: Regular expression patterns, _sre.SRE_Pattern objects created
+ by re.compile(), become comparable (only x==y and x!=y operators). This
+ change should fix the issue #18383: don't duplicate warning filters when the
+ warnings module is reloaded (thing usually only done in unit tests).
+
+- Issue #20572: Remove the subprocess.Popen.wait endtime parameter. It was
+ deprecated in 3.4 and undocumented prior to that.
+
+- Issue #25659: In ctypes, prevent a crash calling the from_buffer() and
+ from_buffer_copy() methods on abstract classes like Array.
+
+- Issue #28548: In the "http.server" module, parse the protocol version if
+ possible, to avoid using HTTP 0.9 in some error responses.
+
+- Issue #19717: Makes Path.resolve() succeed on paths that do not exist.
+ Patch by Vajrasky Kok
+
+- Issue #28563: Fixed possible DoS and arbitrary code execution when handle
+ plural form selections in the gettext module. The expression parser now
+ supports exact syntax supported by GNU gettext.
+
+- Issue #28387: Fixed possible crash in _io.TextIOWrapper deallocator when
+ the garbage collector is invoked in other thread. Based on patch by
+ Sebastian Cufre.
+
+- Issue #27517: LZMA compressor and decompressor no longer raise exceptions if
+ given empty data twice. Patch by Benjamin Fogle.
+
+- Issue #28549: Fixed segfault in curses's addch() with ncurses6.
+
+- Issue #28449: 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.
+
+- Issue #23262: The webbrowser module now supports Firefox 36+ and derived
+ browsers. Based on patch by Oleg Broytman.
+
+- Issue #27939: 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.
+
+- Issue #28255: calendar.TextCalendar.prweek() no longer prints a space after
+ a weeks's calendar. calendar.TextCalendar.pryear() no longer prints redundant
+ newline after a year's calendar. Based on patch by Xiang Zhang.
+
- - Issue #28255: calendar.TextCalendar.prmonth() no longer prints a space
++- Issue #28255: calendar.TextCalendar.prmonth() no longer prints a space
++ at the start of new line after printing a month's calendar. Patch by
++ Xiang Zhang.
++
++- Issue #20491: The textwrap.TextWrapper class now honors non-breaking spaces.
++ Based on patch by Kaarle Ritvanen.
++
++- Issue #28353: os.fwalk() no longer fails on broken links.
++
++- Issue #28430: Fix iterator of C implemented asyncio.Future doesn't accept
++ non-None value is passed to it.send(val).
++
++- Issue #27025: Generated names for Tkinter widgets now start by the "!" prefix
++ for readability (was "`").
++
++- Issue #25464: Fixed HList.header_exists() in tkinter.tix module by addin
++ a workaround to Tix library bug.
++
++- Issue #28488: shutil.make_archive() no longer adds entry "./" to ZIP archive.
++
++- Issue #25953: 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.
++
++- Issue #28469: timeit now uses the sequence 1, 2, 5, 10, 20, 50,... instead
++ of 1, 10, 100,... for autoranging.
++
++- Issue #28115: Command-line interface of the zipfile module now uses argparse.
++ Added support of long options.
++
++- Issue #18219: Optimize csv.DictWriter for large number of columns.
++ Patch by Mariatta Wijaya.
++
++- Issue #28448: Fix C implemented asyncio.Future didn't work on Windows.
++
++- Issue #23214: In the "io" module, the argument to BufferedReader and
++ BytesIO's read1() methods is now optional and can be -1, matching the
++ BufferedIOBase specification.
++
++- Issue #28480: Fix error building socket module when multithreading is
++ disabled.
++
++- Issue #28240: timeit: remove ``-c/--clock`` and ``-t/--time`` command line
++ options which were deprecated since Python 3.3.
++
++- Issue #28240: timeit now repeats the benchmarks 5 times instead of only 3
++ to make benchmarks more reliable.
++
++- Issue #28240: timeit autorange now uses a single loop iteration if the
++ benchmark takes less than 10 seconds, instead of 10 iterations.
++ "python3 -m timeit -s 'import time' 'time.sleep(1)'" now takes 4 seconds
++ instead of 40 seconds.
++
++- Distutils.sdist now looks for README and setup.py files with case
++ sensitivity. This behavior matches that found in Setuptools 6.0 and
++ later. See `setuptools 100
++ <https://github.com/pypa/setuptools/issues/100>`_ for rationale.
++
++- Issue #24452: Make webbrowser support Chrome on Mac OS X. Patch by
++ Ned Batchelder.
++
++- Issue #20766: Fix references leaked by pdb in the handling of SIGINT
++ handlers.
++
++- Issue #27998: Fixed bytes path support in os.scandir() on Windows.
++ Patch by Eryk Sun.
++
++- Issue #28317: The disassembler now decodes FORMAT_VALUE argument.
++
++- Issue #26293: Fixed writing ZIP files that starts not from the start of the
++ file. Offsets in ZIP file now are relative to the start of the archive in
++ conforming to the specification.
++
++- Issue #28380: unittest.mock Mock autospec functions now properly support
++ assert_called, assert_not_called, and assert_called_once.
++
++- Issue #28229: lzma module now supports pathlib.
++
++- Issue #28321: Fixed writing non-BMP characters with binary format in plistlib.
++
++- Issue #28225: bz2 module now supports pathlib. Initial patch by Ethan Furman.
++
++- Issue #28227: gzip now supports pathlib. Patch by Ethan Furman.
++
++- Issue #28332: Deprecated silent truncations in socket.htons and socket.ntohs.
++ Original patch by Oren Milman.
++
++- Issue #27358: Optimized merging var-keyword arguments and improved error
++ message when pass a non-mapping as a var-keyword argument.
++
++- Issue #28257: Improved error message when pass a non-iterable as
++ a var-positional argument. Added opcode BUILD_TUPLE_UNPACK_WITH_CALL.
++
++- Issue #28322: Fixed possible crashes when unpickle itertools objects from
++ incorrect pickle data. Based on patch by John Leitch.
++
++- Issue #28228: imghdr now supports pathlib.
++
++- Issue #28226: compileall now supports pathlib.
++
++- Issue #28314: Fix function declaration (C flags) for the getiterator() method
++ of xml.etree.ElementTree.Element.
++
++- Issue #28148: Stop using localtime() and gmtime() in the time
++ module.
++
++ Introduced platform independent _PyTime_localtime API that is
++ similar to POSIX localtime_r, but available on all platforms. Patch
++ by Ed Schouten.
++
++- Issue #28253: Fixed calendar functions for extreme months: 0001-01
++ and 9999-12.
++
++ Methods itermonthdays() and itermonthdays2() are reimplemented so
++ that they don't call itermonthdates() which can cause datetime.date
++ under/overflow.
++
++- Issue #28275: Fixed possible use after free in the decompress()
++ methods of the LZMADecompressor and BZ2Decompressor classes.
++ Original patch by John Leitch.
++
++- Issue #27897: Fixed possible crash in sqlite3.Connection.create_collation()
++ if pass invalid string-like object as a name. Patch by Xiang Zhang.
++
++- Issue #18844: random.choices() now has k as a keyword-only argument
++ to improve the readability of common cases and come into line
++ with the signature used in other languages.
++
++- Issue #18893: Fix invalid exception handling in Lib/ctypes/macholib/dyld.py.
++ Patch by Madison May.
++
++- Issue #27611: Fixed support of default root window in the tkinter.tix module.
++ Added the master parameter in the DisplayStyle constructor.
++
++- Issue #27348: In the traceback module, restore the formatting of exception
++ messages like "Exception: None". This fixes a regression introduced in
++ 3.5a2.
++
++- Issue #25651: Allow falsy values to be used for msg parameter of subTest().
++
++- Issue #27778: Fix a memory leak in os.getrandom() when the getrandom() is
++ interrupted by a signal and a signal handler raises a Python exception.
++
++- Issue #28200: Fix memory leak on Windows in the os module (fix
++ path_converter() function).
++
++- Issue #25400: RobotFileParser now correctly returns default values for
++ crawl_delay and request_rate. Initial patch by Peter Wirtz.
++
++- Issue #27932: Prevent memory leak in win32_ver().
++
++- Fix UnboundLocalError in socket._sendfile_use_sendfile.
++
++- Issue #28075: Check for ERROR_ACCESS_DENIED in Windows implementation of
++ os.stat(). Patch by Eryk Sun.
++
++- Issue #22493: Warning message emitted by using inline flags in the middle of
++ regular expression now contains a (truncated) regex pattern.
++ Patch by Tim Graham.
++
++- Issue #25270: Prevent codecs.escape_encode() from raising SystemError when
++ an empty bytestring is passed.
++
++- Issue #28181: Get antigravity over HTTPS. Patch by Kaartic Sivaraam.
++
++- Issue #25895: Enable WebSocket URL schemes in urllib.parse.urljoin.
++ Patch by Gergely Imreh and Markus Holtermann.
++
++- Issue #28114: Fix a crash in parse_envlist() when env contains byte strings.
++ Patch by Eryk Sun.
++
++- Issue #27599: Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp().
++
++- Issue #27906: Fix socket accept exhaustion during high TCP traffic.
++ Patch by Kevin Conway.
++
++- Issue #28174: Handle when SO_REUSEPORT isn't properly supported.
++ Patch by Seth Michael Larson.
++
++- Issue #26654: Inspect functools.partial in asyncio.Handle.__repr__.
++ Patch by iceboy.
++
++- Issue #26909: Fix slow pipes IO in asyncio.
++ Patch by INADA Naoki.
++
++- Issue #28176: Fix callbacks race in asyncio.SelectorLoop.sock_connect.
++
++- Issue #27759: Fix selectors incorrectly retain invalid file descriptors.
++ Patch by Mark Williams.
++
++- Issue #28325: Remove vestigial MacOS 9 macurl2path module and its tests.
++
++- Issue #28368: Refuse monitoring processes if the child watcher has
++ no loop attached.
++ Patch by Vincent Michel.
++
++- Issue #28369: Raise RuntimeError when transport's FD is used with
++ add_reader, add_writer, etc.
++
++- Issue #28370: Speedup asyncio.StreamReader.readexactly.
++ Patch by Коренберг Марк.
++
++- Issue #28371: Deprecate passing asyncio.Handles to run_in_executor.
++
++- Issue #28372: Fix asyncio to support formatting of non-python coroutines.
++
++- Issue #28399: Remove UNIX socket from FS before binding.
++ Patch by Коренберг Марк.
++
++- Issue #27972: Prohibit Tasks to await on themselves.
++
++- Issue #24142: Reading a corrupt config file left configparser in an
++ invalid state. Original patch by Florian Höch.
++
++Windows
++-------
++
++- Issue #25778: winreg does not truncate string correctly (Patch by Eryk Sun)
++
++- Issue #28896: Deprecate WindowsRegistryFinder and disable it by default
++
++- Issue #28522: Fixes mishandled buffer reallocation in getpathp.c
++
++- Issue #28402: Adds signed catalog files for stdlib on Windows.
++
++- Issue #28333: Enables Unicode for ps1/ps2 and input() prompts. (Patch by
++ Eryk Sun)
++
++- Issue #28251: Improvements to help manuals on Windows.
++
++- Issue #28110: launcher.msi has different product codes between 32-bit and
++ 64-bit
++
++- Issue #28161: Opening CON for write access fails
++
++- Issue #28162: WindowsConsoleIO readall() fails if first line starts with
++ Ctrl+Z
++
++- Issue #28163: WindowsConsoleIO fileno() passes wrong flags to
++ _open_osfhandle
++
++- Issue #28164: _PyIO_get_console_type fails for various paths
++
++- Issue #28137: Renames Windows path file to ._pth
++
++- Issue #28138: Windows ._pth file should allow import site
++
++C API
++-----
++
++- Issue #28822: The indices parameters *start* and *end* of PyUnicode_FindChar()
++ are now adjusted to behave like ``str[start:end]``.
++
++- Issue #28808: PyUnicode_CompareWithASCIIString() now never raises exceptions.
++
++- Issue #28761: The fields name and doc of structures PyMemberDef, PyGetSetDef,
++ PyStructSequence_Field, PyStructSequence_Desc, and wrapperbase are now of
++ type ``const char *`` rather of ``char *``.
++
++- Issue #28748: Private variable _Py_PackageContext is now of type ``const char *``
++ rather of ``char *``.
++
++- Issue #19569: Compiler warnings are now emitted if use most of deprecated
++ functions.
++
++- Issue #28426: Deprecated undocumented functions PyUnicode_AsEncodedObject(),
++ PyUnicode_AsDecodedObject(), PyUnicode_AsDecodedUnicode() and
++ PyUnicode_AsEncodedUnicode().
++
++Documentation
++-------------
++
++- Issue #23722: The data model reference and the porting section in the
++ 3.6 What's New guide now cover the additional ``__classcell__`` handling
++ needed for custom metaclasses to fully support PEP 487 and zero-argument
++ ``super()``.
++
++- Issue #28513: Documented command-line interface of zipfile.
++
++Build
++-----
++
++- Issue #28762: lockf() is available on Android API level 24, but the F_LOCK
++ macro is not defined in android-ndk-r13.
++
++- Issue #28538: Fix the compilation error that occurs because if_nameindex() is
++ available on Android API level 24, but the if_nameindex structure is not
++ defined.
++
++- Issue #20211: Do not add the directory for installing C header files and the
++ directory for installing object code libraries to the cross compilation
++ search paths. Original patch by Thomas Petazzoni.
++
++- Issue #28849: Do not define sys.implementation._multiarch on Android.
++
++- Issue #10656: Fix out-of-tree building on AIX. Patch by Tristan Carel and
++ Michael Haubenwallner.
++
++- Issue #26359: Rename --with-optimiations to --enable-optimizations.
++
++- Issue #28444: Fix missing extensions modules when cross compiling.
++
++- Issue #28208: Update Windows build and OS X installers to use SQLite 3.14.2.
++
++- Issue #28248: Update Windows build and OS X installers to use OpenSSL 1.0.2j.
++
++- Issue #21124: Fix building the _struct module on Cygwin by passing ``NULL``
++ instead of ``&PyType_Type`` to PyVarObject_HEAD_INIT. Patch by Masayuki
++ Yamamoto.
++
++- Issue #13756: Fix building extensions modules on Cygwin. Patch by Roumen
++ Petrov, based on original patch by Jason Tishler.
++
++- Issue #21085: Add configure check for siginfo_t.si_band, which Cygwin does
++ not provide. Patch by Masayuki Yamamoto with review and rebase by Erik Bray.
++
++- Issue #28258: Fixed build with Estonian locale (python-config and distclean
++ targets in Makefile). Patch by Arfrever Frehtes Taifersar Arahesis.
++
++- Issue #26661: setup.py now detects system libffi with multiarch wrapper.
++
++- Issue #27979: A full copy of libffi is no longer bundled for use when
++ building _ctypes on non-OSX UNIX platforms. An installed copy of libffi is
++ now required when building _ctypes on such platforms.
++
++- Issue #15819: Remove redundant include search directory option for building
++ outside the source tree.
++
++- Issue #28676: Prevent missing 'getentropy' declaration warning on macOS.
++ Patch by Gareth Rees.
++
++Tools/Demos
++-----------
++
++- Issue #28023: Fix python-gdb.py didn't support new dict implementation.
++
++- Issue #15369: The pybench and pystone microbenchmark have been removed from
++ Tools. Please use the new Python benchmark suite
++ https://github.com/python/performance which is more reliable and includes a
++ portable version of pybench working on Python 2 and Python 3.
++
++- Issue #28102: The zipfile module CLI now prints usage to stderr.
++ Patch by Stephen J. Turnbull.
++
++Tests
++-----
++
++- Issue #28950: Disallow -j0 to be combined with -T/-l in regrtest
++ command line arguments.
++
++- Issue #28683: Fix the tests that bind() a unix socket and raise
++ PermissionError on Android for a non-root user.
++
++ - Issue #26936: Fix the test_socket failures on Android - getservbyname(),
++ getservbyport() and getaddrinfo() are broken on some Android API levels.
++
++- Issue #28666: Now test.support.rmtree is able to remove unwritable or
++ unreadable directories.
++
++- Issue #23839: Various caches now are cleared before running every test file.
++
++- Issue #26944: Fix test_posix for Android where 'id -G' is entirely wrong or
++ missing the effective gid.
++
++- Issue #28409: regrtest: fix the parser of command line arguments.
++
++- Issue #28217: Adds _testconsole module to test console input.
++
++- Issue #26939: Add the support.setswitchinterval() function to fix
++ test_functools hanging on the Android armv7 qemu emulator.
++
++
+ What's New in Python 3.6.1 release candidate 1?
+ ===============================================
+
+ *Release date: XXXX-XX-XX*
+
+ Core and Builtins
+ -----------------
+
+ - Issue #28932: Do not include <sys/random.h> if it does not exist.
+
+ - Issue #25677: Correct the positioning of the syntax error caret for
+ indented blocks. Based on patch by Michael Layzell.
+
+ - Issue #29000: Fixed bytes formatting of octals with zero padding in alternate
+ form.
+
+ - Issue #26919: On Android, operating system data is now always encoded/decoded
+ to/from UTF-8, instead of the locale encoding to avoid inconsistencies with
+ os.fsencode() and os.fsdecode() which are already using UTF-8.
+
+ - Issue #28991: functools.lru_cache() was susceptible to an obscure reentrancy
+ bug triggerable by a monkey-patched len() function.
+
+ - Issue #28739: f-string expressions are no longer accepted as docstrings and
+ by ast.literal_eval() even if they do not include expressions.
+
+ - Issue #28512: Fixed setting the offset attribute of SyntaxError by
+ PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject().
+
+ - Issue #28918: Fix the cross compilation of xxlimited when Python has been
+ built with Py_DEBUG defined.
+
+ - Issue #28731: Optimize _PyDict_NewPresized() to create correct size dict.
+ Improve speed of dict literal with constant keys up to 30%.
+
+ Library
+ -------
+
+ - Issue 28923: Remove editor artifacts from Tix.py.
+
+ - Issue #28871: Fixed a crash when deallocate deep ElementTree.
+
+ - Issue #19542: Fix bugs in WeakValueDictionary.setdefault() and
+ WeakValueDictionary.pop() when a GC collection happens in another
+ thread.
+
+ - Issue #20191: Fixed a crash in resource.prlimit() when pass a sequence that
+ doesn't own its elements as limits.
+
+ - Issue #28779: multiprocessing.set_forkserver_preload() would crash the
+ forkserver process if a preloaded module instantiated some
+ multiprocessing objects such as locks.
+
+ - Issue #28847: dbm.dumb now supports reading read-only files and no longer
+ writes the index file when it is not changed.
+
+ - Issue #26937: The chown() method of the tarfile.TarFile class does not fail
+ now when the grp module cannot be imported, as for example on Android
+ platforms.
+
+ Windows
+ -------
+
+ - Issue #25778: winreg does not truncate string correctly (Patch by Eryk Sun)
+
+ - Issue #28896: Deprecate WindowsRegistryFinder and disable it by default.
+
+ Tests
+ -----
+
+ - Issue #28950: Disallow -j0 to be combined with -T/-l in regrtest
+ command line arguments.
+
+ - Issue #28683: Fix the tests that bind() a unix socket and raise
+ PermissionError on Android for a non-root user.
+
+ - Issue #26939: Add the support.setswitchinterval() function to fix
+ test_functools hanging on the Android armv7 qemu emulator.
+
+ Build
+ -----
+
+ - Issue #28762: lockf() is available on Android API level 24, but the F_LOCK
+ macro is not defined in android-ndk-r13.
+
+ - Issue #28538: Fix the compilation error that occurs because if_nameindex() is
+ available on Android API level 24, but the if_nameindex structure is not
+ defined.
+
+ - Issue #20211: Do not add the directory for installing C header files and the
+ directory for installing object code libraries to the cross compilation
+ search paths. Original patch by Thomas Petazzoni.
+
+ - Issue #28849: Do not define sys.implementation._multiarch on Android.
+
+
+ What's New in Python 3.6.0?
+ ===========================
+
+ *Release date: 2016-12-23*
+
+ - No changes since release candidate 2
+
+
+ What's New in Python 3.6.0 release candidate 2?
+ ===============================================
+
+ *Release date: 2016-12-16*
+
+ Core and Builtins
+ -----------------
+
+ - Issue #28147: Fix a memory leak in split-table dictionaries: setattr()
+ must not convert combined table into split table. Patch written by INADA
+ Naoki.
+
+ - Issue #28990: Fix asyncio SSL hanging if connection is closed before
+ handshake is completed. (Patch by HoHo-Ho)
+
+ Tools/Demos
+ -----------
+
+ - Issue #28770: Fix python-gdb.py for fastcalls.
+
+ Windows
+ -------
+
+ - Issue #28896: Deprecate WindowsRegistryFinder.
+
+ Build
+ -----
+
+ - Issue #28898: Prevent gdb build errors due to HAVE_LONG_LONG redefinition.
+
+
+ What's New in Python 3.6.0 release candidate 1?
+ ===============================================
+
+ *Release date: 2016-12-06*
+
+ Core and Builtins
+ -----------------
+
+ - Issue #23722: Rather than silently producing a class that doesn't support
+ zero-argument ``super()`` in methods, failing to pass the new
+ ``__classcell__`` namespace entry up to ``type.__new__`` now results in a
+ ``DeprecationWarning`` and a class that supports zero-argument ``super()``.
+
+ - Issue #28797: Modifying the class __dict__ inside the __set_name__ method of
+ a descriptor that is used inside that class no longer prevents calling the
+ __set_name__ method of other descriptors.
+
+ - Issue #28782: Fix a bug in the implementation ``yield from`` when checking
+ if the next instruction is YIELD_FROM. Regression introduced by WORDCODE
+ (issue #26647).
+
+ Library
+ -------
+
+ - Issue #27030: Unknown escapes in re.sub() replacement template are allowed
+ again. But they still are deprecated and will be disabled in 3.7.
+
+ - Issue #28835: Fix a regression introduced in warnings.catch_warnings():
+ call warnings.showwarning() if it was overriden inside the context manager.
+
+ - Issue #27172: To assist with upgrades from 2.7, the previously documented
+ deprecation of ``inspect.getfullargspec()`` has been reversed. This decision
+ may be revisited again after the Python 2.7 branch is no longer officially
+ supported.
+
+ - Issue #24142: Reading a corrupt config file left configparser in an
+ invalid state. Original patch by Florian Höch.
+
+ - Issue #28843: Fix asyncio C Task to handle exceptions __traceback__.
+
+ C API
+ -----
+
+ - Issue #28808: PyUnicode_CompareWithASCIIString() now never raises exceptions.
+
+ Documentation
+ -------------
+
+ - Issue #23722: The data model reference and the porting section in the What's
+ New guide now cover the additional ``__classcell__`` handling needed for
+ custom metaclasses to fully support PEP 487 and zero-argument ``super()``.
+
+ Tools/Demos
+ -----------
+
+ - Issue #28023: Fix python-gdb.py didn't support new dict implementation.
+
+
+ What's New in Python 3.6.0 beta 4?
+ ==================================
+
+ *Release date: 2016-11-21*
+
+ Core and Builtins
+ -----------------
+
+ - Issue #28532: Show sys.version when -V option is supplied twice.
+
+ - Issue #27100: The with-statement now checks for __enter__ before it
+ checks for __exit__. This gives less confusing error messages when
+ both methods are missing. Patch by Jonathan Ellington.
+
+ - Issue #28746: Fix the set_inheritable() file descriptor method on platforms
+ that do not have the ioctl FIOCLEX and FIONCLEX commands.
+
+ - Issue #26920: Fix not getting the locale's charset upon initializing the
+ interpreter, on platforms that do not have langinfo.
+
+ - Issue #28648: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X
+ when decode astral characters. Patch by Xiang Zhang.
+
+ - Issue #19398: Extra slash no longer added to sys.path components in case of
+ empty compile-time PYTHONPATH components.
+
+ - Issue #28665: Improve speed of the STORE_DEREF opcode by 40%.
+
+ - Issue #28583: PyDict_SetDefault didn't combine split table when needed.
+ Patch by Xiang Zhang.
+
+ - Issue #27243: Change PendingDeprecationWarning -> DeprecationWarning.
+ As it was agreed in the issue, __aiter__ returning an awaitable
+ should result in PendingDeprecationWarning in 3.5 and in
+ DeprecationWarning in 3.6.
+
+ - Issue #26182: Fix a refleak in code that raises DeprecationWarning.
+
+ - Issue #28721: Fix asynchronous generators aclose() and athrow() to
+ handle StopAsyncIteration propagation properly.
+
+ Library
+ -------
+
+ - Issue #26273: Add new :data:`socket.TCP_CONGESTION` (Linux 2.6.13) and
+ :data:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
+ Omar Sandoval.
+
+ - Issue #28752: Restored the __reduce__() methods of datetime objects.
+
+ - Issue #28727: Regular expression patterns, _sre.SRE_Pattern objects created
+ by re.compile(), become comparable (only x==y and x!=y operators). This
+ change should fix the issue #18383: don't duplicate warning filters when the
+ warnings module is reloaded (thing usually only done in unit tests).
+
+ - Issue #20572: The subprocess.Popen.wait method's undocumented
+ endtime parameter now raises a DeprecationWarning.
+
+ - Issue #25659: In ctypes, prevent a crash calling the from_buffer() and
+ from_buffer_copy() methods on abstract classes like Array.
+
+ - Issue #19717: Makes Path.resolve() succeed on paths that do not exist.
+ Patch by Vajrasky Kok
+
+ - Issue #28563: Fixed possible DoS and arbitrary code execution when handle
+ plural form selections in the gettext module. The expression parser now
+ supports exact syntax supported by GNU gettext.
+
+ - Issue #28387: Fixed possible crash in _io.TextIOWrapper deallocator when
+ the garbage collector is invoked in other thread. Based on patch by
+ Sebastian Cufre.
+
+ - Issue #28600: Optimize loop.call_soon.
+
+ - Issue #28613: Fix get_event_loop() return the current loop if
+ called from coroutines/callbacks.
+
+ - Issue #28634: Fix asyncio.isfuture() to support unittest.Mock.
+
+ - Issue #26081: Fix refleak in _asyncio.Future.__iter__().throw.
+
+ - Issue #28639: Fix inspect.isawaitable to always return bool
+ Patch by Justin Mayfield.
+
+ - Issue #28652: Make loop methods reject socket kinds they do not support.
+
+ - Issue #28653: Fix a refleak in functools.lru_cache.
+
+ - Issue #28703: Fix asyncio.iscoroutinefunction to handle Mock objects.
+
+ - Issue #28704: Fix create_unix_server to support Path-like objects
+ (PEP 519).
+
+ - Issue #28720: Add collections.abc.AsyncGenerator.
+
+ Documentation
+ -------------
+
+ - Issue #28513: Documented command-line interface of zipfile.
+
+ Tests
+ -----
+
+ - Issue #28666: Now test.support.rmtree is able to remove unwritable or
+ unreadable directories.
+
+ - Issue #23839: Various caches now are cleared before running every test file.
+
+ Build
+ -----
+
+ - Issue #10656: Fix out-of-tree building on AIX. Patch by Tristan Carel and
+ Michael Haubenwallner.
+
+ - Issue #26359: Rename --with-optimiations to --enable-optimizations.
+
+ - Issue #28676: Prevent missing 'getentropy' declaration warning on macOS.
+ Patch by Gareth Rees.
+
+
+ What's New in Python 3.6.0 beta 3?
+ ==================================
+
+ *Release date: 2016-10-31*
+
+ Core and Builtins
+ -----------------
+
+ - Issue #28128: 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.
+
+ - Issue #28509: dict.update() no longer allocate unnecessary large memory.
+
+ - Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug
+ build.
+
+ - Issue #28517: Fixed of-by-one error in the peephole optimizer that caused
+ keeping unreachable code.
+
+ - Issue #28214: Improved exception reporting for problematic __set_name__
+ attributes.
+
+ - Issue #23782: Fixed possible memory leak in _PyTraceback_Add() and exception
+ loss in PyTraceBack_Here().
+
+ - Issue #28471: Fix "Python memory allocator called without holding the GIL"
+ crash in socket.setblocking.
+
+ Library
+ -------
+
+ - Issue #27517: LZMA compressor and decompressor no longer raise exceptions if
+ given empty data twice. Patch by Benjamin Fogle.
+
+ - Issue #28549: Fixed segfault in curses's addch() with ncurses6.
+
+ - Issue #28449: 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.
+
+ - Issue #23262: The webbrowser module now supports Firefox 36+ and derived
+ browsers. Based on patch by Oleg Broytman.
+
+ - Issue #27939: 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.
+
+ - Issue #18844: The various ways of specifying weights for random.choices()
+ now produce the same result sequences.
+
+ - Issue #28255: calendar.TextCalendar().prmonth() no longer prints a space
at the start of new line after printing a month's calendar. Patch by
Xiang Zhang.
projects / python / commitdiff