[blurb] v3.8.0a1

Misc/NEWS.d/next/Build/2017-09-26-23-08-27.bpo-29442.fD8YTi.rst

-Replace optparse with argparse in setup.py

Misc/NEWS.d/next/Build/2018-02-21-12-46-00.bpo-32898.M15bZh.rst

-Fix the python debug build when using COUNT_ALLOCS.

Misc/NEWS.d/next/Build/2018-03-08-20-25-29.bpo-33012.k9Fe1q.rst

-gcc 8 has added a new warning heuristic to detect invalid function casts and
-a stock python build seems to hit that warning quite often.  The most common
-is the cast of a METH_NOARGS function (that uses just one argument) to a
-PyCFunction. Fix this by adding a dummy argument to all functions that
-implement METH_NOARGS.

Misc/NEWS.d/next/Build/2018-03-28-04-15-03.bpo-33163.hfpWuU.rst

-Upgrade pip to 9.0.3 and setuptools to v39.0.1.

Misc/NEWS.d/next/Build/2018-03-30-14-55-48.bpo-33182.CePczb.rst

-The embedding tests can once again be built with clang 6.0

Misc/NEWS.d/next/Build/2018-04-17-00-38-19.bpo-32232.o7G_UO.rst

-By default, modules configured in `Modules/Setup` are no longer built with
-`-DPy_BUILD_CORE`. Instead, modules that specifically need that preprocessor
-definition include it in their individual entries.

Misc/NEWS.d/next/Build/2018-04-30-16-53-00.bpo-33377.QBh6vP.rst

-Add new triplets for mips r6 and riscv variants (used in extension
-suffixes).

Misc/NEWS.d/next/Build/2018-04-30-17-19-37.bpo-33393.HkVCqI.rst

-Update config.guess and config.sub files.

Misc/NEWS.d/next/Build/2018-04-30-17-36-46.bpo-33394._Vdi4t.rst

-Enable the verbose build for extension modules, when GNU make is passed
-macros on the command line.

Misc/NEWS.d/next/Build/2018-05-13-17-21-54.bpo-33483.WOs-en.rst

-C compiler is now correctly detected from the standard environment
-variables. --without-gcc and --with-icc options have been removed.

Misc/NEWS.d/next/Build/2018-05-15-02-07-49.bpo-33512.X4Fy1Q.rst

-configure's check for "long double" has been simplified

Misc/NEWS.d/next/Build/2018-05-15-12-44-50.bpo-33522.mJoNcA.rst

-Enable CI builds on Visual Studio Team Services at
-https://python.visualstudio.com/cpython

Misc/NEWS.d/next/Build/2018-05-25-13-05-51.bpo-33648.bJ4JZH.rst

-The --with-c-locale-warning configuration flag has been removed. It has had
-no effect for about a year.

Misc/NEWS.d/next/Build/2018-05-28-11-40-22.bpo-33614.28e0sE.rst

-Ensures module definition files for the stable ABI on Windows are correctly
-regenerated.

Misc/NEWS.d/next/Build/2018-06-04-21-34-34.bpo-5755.65GmCj.rst

-Move ``-Wstrict-prototypes`` option to ``CFLAGS_NODIST`` from ``OPT``. This
-option emitted annoying warnings when building extension modules written in
-C++.

Misc/NEWS.d/next/Build/2018-06-15-18-18-16.bpo-30345.j-xRE1.rst

-Add -g to LDFLAGS when compiling with LTO to get debug symbols.

Misc/NEWS.d/next/Build/2018-07-10-21-33-25.bpo-32430.UN3Nk8.rst

-Rename Modules/Setup.dist to Modules/Setup, and remove the necessity to copy
-the former manually to the latter when updating the local source tree.

Misc/NEWS.d/next/Build/2018-07-15-16-49-06.bpo-34121.74G_lo.rst

-Fix detection of C11 atomic support on clang.

Misc/NEWS.d/next/Build/2018-07-27-09-52-48.bpo-34245.bBV0NI.rst

-The Python shared library is now installed with write permission (mode 0755),
-which is the standard way of installing such libraries.

Misc/NEWS.d/next/Build/2018-08-24-09-48-25.bpo-33015.s21y74.rst

-Fix an undefined behaviour in the pthread implementation of
-:c:func:`PyThread_start_new_thread`: add a function wrapper to always return
-``NULL``.

Misc/NEWS.d/next/Build/2018-08-31-19-41-09.bpo-34555.dfQcnm.rst

-Fix for case where it was not possible to have both
-``HAVE_LINUX_VM_SOCKETS_H`` and ``HAVE_SOCKADDR_ALG`` be undefined.

Misc/NEWS.d/next/Build/2018-09-06-07-15-20.bpo-34081.cuSTnH.rst

-Make Sphinx warnings as errors in the Docs Makefile.

Misc/NEWS.d/next/Build/2018-09-14-09-53-21.bpo-34582.j3omgk.rst

-Add JUnit XML output for regression tests and update Azure DevOps builds.

Misc/NEWS.d/next/Build/2018-09-17-13-56-12.bpo-34710.ARqIAK.rst

-Fixed SSL module build with OpenSSL & pedantic CFLAGS.

Misc/NEWS.d/next/Build/2018-09-18-16-28-31.bpo-34585.CGMu0h.rst

-Check for floating-point byte order in configure.ac using compilation tests
-instead of executing code, so that these checks work in cross-compiled
-builds.

Misc/NEWS.d/next/Build/2018-09-26-17-29-10.bpo-34765.AvxdVj.rst

-Update the outdated install-sh file to the latest revision from automake
-v1.16.1

Misc/NEWS.d/next/Build/2018-10-16-12-22-36.bpo-28015.ylSgFh.rst

-Have --with-lto works correctly with clang.

Misc/NEWS.d/next/Build/2018-10-17-17-38-57.bpo-35011.GgoPIC.rst

-Restores the use of pyexpatns.h to isolate our embedded copy of the expat C
-library so that its symbols do not conflict at link or dynamic loading time
-with an embedding application or other extension modules with their own
-version of libexpat.

Misc/NEWS.d/next/Build/2018-10-26-14-49-19.bpo-35059.PKsBxP.rst

-PCbuild: Set InlineFunctionExpansion to OnlyExplicitInline ("/Ob1" option)
-in pyproject.props in Debug mode to expand functions marked as inline. This
-change should make Python compiled in Debug mode a little bit faster on
-Windows.

Misc/NEWS.d/next/Build/2018-11-01-15-01-23.bpo-35139.XZTttb.rst

-Fix a compiler error when statically linking `pyexpat` in `Modules/Setup`.

Misc/NEWS.d/next/Build/2018-12-04-15-33-28.bpo-35351.ZhhBfT.rst

-When building Python with clang and LTO, LTO flags are no longer passed into
-CFLAGS to build third-party C extensions through distutils.

Misc/NEWS.d/next/Build/2018-12-05-22-28-40.bpo-35257.dmcd_s.rst

-Avoid leaking the linker flags from Link Time Optimizations (LTO)
-into distutils when compiling C extensions.
\ No newline at end of file

Misc/NEWS.d/next/Build/2018-12-14-19-36-05.bpo-35499.9yAldM.rst

-``make profile-opt`` no longer replaces ``CFLAGS_NODIST`` with ``CFLAGS``. It
-now adds profile-guided optimization (PGO) flags to ``CFLAGS_NODIST``: existing
-``CFLAGS_NODIST`` flags are kept.

Misc/NEWS.d/next/Build/2018-12-29-10-19-43.bpo-35550.BTuu8e.rst

-Fix incorrect Solaris #ifdef checks to look for __sun && __SVR4 instead of sun when compiling.
\ No newline at end of file

Misc/NEWS.d/next/Build/2019-01-02-11-23-33.bpo-35642.pjkhJe.rst

-Remove asynciomodule.c from pythoncore.vcxproj

Misc/NEWS.d/next/Build/2019-01-10-11-37-18.bpo-35683.pf5Oos.rst

-Improved Azure Pipelines build steps and now verifying layouts correctly

Misc/NEWS.d/next/Build/2019-02-02-13-34-05.bpo-34691.B-Lsj4.rst

-The _contextvars module is now built into the core Python library on
-Windows.

Misc/NEWS.d/next/C API/2017-10-12-23-24-27.bpo-30863.xrED19.rst

-:c:func:`PyUnicode_AsWideChar` and :c:func:`PyUnicode_AsWideCharString` no
-longer cache the ``wchar_t*`` representation of string objects.

Misc/NEWS.d/next/C API/2018-01-09-17-03-54.bpo-32374.SwwLoz.rst

-Document that m_traverse for multi-phase initialized modules can be called
-with m_state=NULL, and add a sanity check

Misc/NEWS.d/next/C API/2018-03-20-21-43-09.bpo-33042.FPFp64.rst

-Embedding applications may once again call PySys_ResetWarnOptions,
-PySys_AddWarnOption, and PySys_AddXOption prior to calling Py_Initialize.
\ No newline at end of file

Misc/NEWS.d/next/C API/2018-06-10-09-42-31.bpo-33818.50nlf3.rst

-:c:func:`PyExceptionClass_Name` will now return ``const char *`` instead of
-``char *``.

Misc/NEWS.d/next/C API/2018-06-21-17-19-31.bpo-32500.WGCNad.rst

-Fixed error messages for :c:func:`PySequence_Size`,
-:c:func:`PySequence_GetItem`, :c:func:`PySequence_SetItem` and
-:c:func:`PySequence_DelItem` called with a mapping and
-:c:func:`PyMapping_Size` called with a sequence.

Misc/NEWS.d/next/C API/2018-07-02-10-58-11.bpo-34008.COewz-.rst

-Py_Main() can again be called after Py_Initialize(), as in Python 3.6.

Misc/NEWS.d/next/C API/2018-07-08-12-06-18.bpo-32455.KVHlkz.rst

-Added :c:func:`PyCompile_OpcodeStackEffectWithJump`.

Misc/NEWS.d/next/C API/2018-07-09-11-39-54.bpo-23927.pDFkxb.rst

-Fixed :exc:`SystemError` in :c:func:`PyArg_ParseTupleAndKeywords` when the
-``w*`` format unit is used for optional parameter.

Misc/NEWS.d/next/C API/2018-07-22-14-58-06.bpo-34127.qkfnHO.rst

-Return grammatically correct error message based on argument count.
-Patch by Karthikeyan Singaravelan.

Misc/NEWS.d/next/C API/2018-07-24-11-57-35.bpo-34193.M6ch1Q.rst

-Fix pluralization in TypeError messages in getargs.c and typeobject.c:
-'1 argument' instead of '1 arguments' and '1 element' instead of '1 elements'.

Misc/NEWS.d/next/C API/2018-08-29-18-48-47.bpo-34523.lLQ8rh.rst

-Py_DecodeLocale() and Py_EncodeLocale() now use the UTF-8 encoding on
-Windows if Py_LegacyWindowsFSEncodingFlag is zero.

Misc/NEWS.d/next/C API/2018-10-05-17-06-49.bpo-34910.tSFrls.rst

-Ensure that :c:func:`PyObject_Print` always returns ``-1`` on error.  Patch
-by Zackery Spytz.

Misc/NEWS.d/next/C API/2018-10-13-16-30-54.bpo-34725.j52rIS.rst

-Adds _Py_SetProgramFullPath so embedders may override sys.executable

Misc/NEWS.d/next/C API/2018-11-01-13-58-37.bpo-35134.SbZo0o.rst

-Creation of a new ``Include/cpython/`` subdirectory.

Misc/NEWS.d/next/C API/2018-11-13-12-13-04.bpo-35081.gFd85N.rst

-The :c:func:`_PyObject_GC_TRACK` and :c:func:`_PyObject_GC_UNTRACK` macros
-have been removed from the public C API.

Misc/NEWS.d/next/C API/2018-11-22-13-52-36.bpo-35259.p07c61.rst

-Conditionally declare :c:func:`Py_FinalizeEx()` (new in 3.6) based on
-Py_LIMITED_API. Patch by Arthur Neufeld.

Misc/NEWS.d/next/C API/2018-11-22-18-15-46.bpo-35081.FdK9mV.rst

-Internal APIs surrounded by ``#ifdef Py_BUILD_CORE`` have been moved from
-``Include/*.h`` headers to new header files ``Include/internal/pycore_*.h``.

Misc/NEWS.d/next/C API/2018-11-22-18-34-23.bpo-35296.nxrIQt.rst

-``make install`` now also installs the internal API:
-``Include/internal/*.h`` header files.

Misc/NEWS.d/next/C API/2018-11-23-11-52-34.bpo-35059.BLSp6y.rst

-The following C macros have been converted to static inline functions:
-:c:func:`Py_INCREF`, :c:func:`Py_DECREF`, :c:func:`Py_XINCREF`,
-:c:func:`Py_XDECREF`, :c:func:`PyObject_INIT`, :c:func:`PyObject_INIT_VAR`.

Misc/NEWS.d/next/C API/2018-11-28-03-20-36.bpo-35322.Qcqsag.rst

-Fix memory leak in :c:func:`PyUnicode_EncodeLocale` and
-:c:func:`PyUnicode_EncodeFSDefault` on error handling.

Misc/NEWS.d/next/C API/2019-01-11-11-16-16.bpo-33817.nJ4yIj.rst

-Fixed :c:func:`_PyBytes_Resize` for empty bytes objects.

Misc/NEWS.d/next/C API/2019-01-22-17-04-10.bpo-35713.fmehdG.rst

-The :c:func:`PyByteArray_Init` and :c:func:`PyByteArray_Fini` functions have
-been removed. They did nothing since Python 2.7.4 and Python 3.2.0, were
-excluded from the limited API (stable ABI), and were not documented.

Misc/NEWS.d/next/Core and Builtins/2017-09-12-08-11-01.bpo-29832.Kuf2M7.rst

-Remove references to 'getsockaddrarg' from various socket error messages.
-Patch by Oren Milman.

Misc/NEWS.d/next/Core and Builtins/2017-09-25-20-36-24.bpo-31577.jgYsSA.rst

-Fix a crash in `os.utime()` in case of a bad ns argument. Patch by Oren
-Milman.

Misc/NEWS.d/next/Core and Builtins/2017-10-02-21-02-14.bpo-21983.UoC319.rst

-Fix a crash in `ctypes.cast()` in case the type argument is a ctypes
-structured data type. Patch by Eryk Sun and Oren Milman.

Misc/NEWS.d/next/Core and Builtins/2017-10-07-10-13-15.bpo-25862.FPYBA5.rst

-Fix assertion failures in the ``tell()`` method of ``io.TextIOWrapper``.
-Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2017-10-30-12-44-50.bpo-31902.a07fa57.rst

-Fix the ``col_offset`` attribute for ast nodes ``ast.AsyncFor``,
-``ast.AsyncFunctionDef``, and ``ast.AsyncWith``. Previously, ``col_offset``
-pointed to the keyword after ``async``.

Misc/NEWS.d/next/Core and Builtins/2017-11-22-15-43-14.bpo-32117.-vloh8.rst

-Iterable unpacking is now allowed without parentheses in yield and return
-statements, e.g. ``yield 1, 2, 3, *rest``. Thanks to David Cuthbert for the
-change and Jordan Chapman for added tests.

Misc/NEWS.d/next/Core and Builtins/2017-11-26-00-59-22.bpo-10544.fHOM3V.rst

-Yield expressions are now disallowed in comprehensions and generator
-expressions except the expression for the outermost iterable.

Misc/NEWS.d/next/Core and Builtins/2017-12-12-13-43-13.bpo-32285.LzKSwz.rst

-New function unicodedata.is_normalized, which can check whether a string is
-in a specific normal form.

Misc/NEWS.d/next/Core and Builtins/2017-12-24-19-48-59.bpo-17611.P85kWL.rst

-Simplified the interpreter loop by moving the logic of unrolling the stack
-of blocks into the compiler. The compiler emits now explicit instructions
-for adjusting the stack of values and calling the cleaning up code for
-:keyword:`break`, :keyword:`continue` and :keyword:`return`.
-
-Removed opcodes :opcode:`BREAK_LOOP`, :opcode:`CONTINUE_LOOP`,
-:opcode:`SETUP_LOOP` and :opcode:`SETUP_EXCEPT`. Added new opcodes
-:opcode:`ROT_FOUR`, :opcode:`BEGIN_FINALLY` and :opcode:`CALL_FINALLY` and
-:opcode:`POP_FINALLY`. Changed the behavior of :opcode:`END_FINALLY` and
-:opcode:`WITH_CLEANUP_START`.

Misc/NEWS.d/next/Core and Builtins/2018-01-03-23-12-43.bpo-32489.SDEPHB.rst

-A :keyword:`continue` statement is now allowed in the :keyword:`finally`
-clause.

Misc/NEWS.d/next/Core and Builtins/2018-01-26-21-20-21.bpo-32583.Fh3fau.rst

-Fix possible crashing in builtin Unicode decoders caused by write
-out-of-bound errors when using customized decode error handlers.

Misc/NEWS.d/next/Core and Builtins/2018-01-29-14-36-37.bpo-32711.8hQFJP.rst

-Fix the warning messages for Python/ast_unparse.c. Patch by Stéphane Wirtel

Misc/NEWS.d/next/Core and Builtins/2018-02-01-10-16-28.bpo-32303.VsvhSl.rst

-Make sure ``__spec__.loader`` matches ``__loader__`` for namespace packages.

Misc/NEWS.d/next/Core and Builtins/2018-02-01-10-56-41.bpo-32305.dkU9Qa.rst

-For namespace packages, ensure that both ``__file__`` and
-``__spec__.origin`` are set to None.

Misc/NEWS.d/next/Core and Builtins/2018-02-02-08-50-46.bpo-31356.MNwUOQ.rst

-Remove the new API added in bpo-31356 (gc.ensure_disabled() context
-manager).

Misc/NEWS.d/next/Core and Builtins/2018-02-14-12-35-47.bpo-32836.bThJnx.rst

-Don't use temporary variables in cases of list/dict/set comprehensions

Misc/NEWS.d/next/Core and Builtins/2018-02-20-21-53-48.bpo-32889.J6eWy5.rst

-Update Valgrind suppression list to account for the rename of
-``Py_ADDRESS_IN_RANG`` to ``address_in_range``.

Misc/NEWS.d/next/Core and Builtins/2018-02-24-00-07-05.bpo-32925.e-7Ufh.rst

-Optimized iterating and containing test for literal lists consisting of
-non-constants: ``x in [a, b]`` and ``for x in [a, b]``. The case of all
-constant elements already was optimized.

Misc/NEWS.d/next/Core and Builtins/2018-02-24-21-51-42.bpo-32932.2cz31L.rst

-Make error message more revealing when there are non-str objects in ``__all__``.

Misc/NEWS.d/next/Core and Builtins/2018-02-25-10-52-40.bpo-32946.Lo09rG.rst

-Importing names from already imported module with "from ... import ..." is
-now 30% faster if the module is not a package.

Misc/NEWS.d/next/Core and Builtins/2018-02-27-13-36-21.bpo-17288.Gdj24S.rst

-Prevent jumps from 'return' and 'exception' trace events.

Misc/NEWS.d/next/Core and Builtins/2018-02-27-20-57-00.bpo-32911.cmKfco.rst

-Due to unexpected compatibility issues discovered during downstream beta
-testing, reverted :issue:`29463`. ``docstring`` field is removed from Module,
-ClassDef, FunctionDef, and AsyncFunctionDef ast nodes which was added in
-3.7a1.  Docstring expression is restored as a first statement in their body.
-Based on patch by Inada Naoki.

Misc/NEWS.d/next/Core and Builtins/2018-03-06-12-19-19.bpo-33005.LP-V2U.rst

-Fix a crash on fork when using a custom memory allocator (ex: using
-PYTHONMALLOC env var). _PyGILState_Reinit() and _PyInterpreterState_Enable()
-now use the default RAW memory allocator to allocate a new interpreters mutex
-on fork.

Misc/NEWS.d/next/Core and Builtins/2018-03-08-09-48-38.bpo-33026.QZA3Ba.rst

-Fixed jumping out of "with" block by setting f_lineno.

Misc/NEWS.d/next/Core and Builtins/2018-03-10-15-16-40.bpo-33041.-ak5Fk.rst

-Fixed bytecode generation for "async for" with a complex target. A
-StopAsyncIteration raised on assigning or unpacking will be now propagated
-instead of stopping the iteration.

Misc/NEWS.d/next/Core and Builtins/2018-03-14-21-42-17.bpo-25750.lxgkQz.rst

-Fix rare Python crash due to bad refcounting in ``type_getattro()`` if a
-descriptor deletes itself from the class. Patch by Jeroen Demeyer.

Misc/NEWS.d/next/Core and Builtins/2018-03-18-13-56-14.bpo-33041.XwPhI2.rst

-Added new opcode :opcode:`END_ASYNC_FOR` and fixes the following issues:
-
-* Setting global :exc:`StopAsyncIteration` no longer breaks ``async for``
-  loops.
-* Jumping into an ``async for`` loop is now disabled.
-* Jumping out of an ``async for`` loop no longer corrupts the stack.

Misc/NEWS.d/next/Core and Builtins/2018-03-19-00-59-20.bpo-33083.Htztjl.rst

-``math.factorial`` no longer accepts arguments that are not int-like.
-Patch by Pablo Galindo.

Misc/NEWS.d/next/Core and Builtins/2018-03-22-23-09-06.bpo-33018.0ncEJV.rst

-Improve consistency of errors raised by ``issubclass()`` when called with a
-non-class and an abstract base class as the first and second arguments,
-respectively. Patch by Josh Bronson.

Misc/NEWS.d/next/Core and Builtins/2018-03-25-19-25-14.bpo-33138.aSqudH.rst

-Changed standard error message for non-pickleable and non-copyable types. It
-now says "cannot pickle" instead of "can't pickle" or "cannot serialize".

Misc/NEWS.d/next/Core and Builtins/2018-03-25-19-49-06.bpo-33053.V3xlsH.rst

-When using the -m switch, sys.path[0] is now explicitly expanded as the
-*starting* working directory, rather than being left as the empty path
-(which allows imports from the current working directory at the time of the
-import)

Misc/NEWS.d/next/Core and Builtins/2018-04-02-09-32-40.bpo-33199.TPnxQu.rst

-Fix ``ma_version_tag`` in dict implementation is uninitialized when copying
-from key-sharing dict.

Misc/NEWS.d/next/Core and Builtins/2018-04-03-00-30-25.bpo-29922.CdLuMl.rst

-Improved error messages in 'async with' when ``__aenter__()`` or
-``__aexit__()`` return non-awaitable object.

Misc/NEWS.d/next/Core and Builtins/2018-04-03-00-58-41.bpo-33205.lk2F3r.rst

-Change dict growth function from ``round_up_to_power_2(used*2+hashtable_size/2)`` to
-``round_up_to_power_2(used*3)``.  Previously, dict is shrinked only when ``used == 0``.
-Now dict has more chance to be shrinked.

Misc/NEWS.d/next/Core and Builtins/2018-04-05-22-20-44.bpo-33231.3Jmo0q.rst

-Fix potential memory leak in ``normalizestring()``.

Misc/NEWS.d/next/Core and Builtins/2018-04-13-22-31-09.bpo-33176.PB9com.rst

-Add a ``toreadonly()`` method to memoryviews.

Misc/NEWS.d/next/Core and Builtins/2018-04-14-11-02-57.bpo-30455.ANRwjo.rst

-The C and Python code and the documentation related to tokens are now generated
-from a single source file :file:`Grammar/Tokens`.

Misc/NEWS.d/next/Core and Builtins/2018-04-14-13-12-50.bpo-33270.UmVV6i.rst

-Intern the names for all anonymous code objects.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-04-17-01-24-51.bpo-33234.l9IDtp.rst

-The list constructor will pre-size and not over-allocate when
-the input lenght is known.

Misc/NEWS.d/next/Core and Builtins/2018-04-18-12-23-30.bpo-33306.tSM3cp.rst

-Improved syntax error messages for unbalanced parentheses.

Misc/NEWS.d/next/Core and Builtins/2018-04-18-14-17-44.bpo-33305.9z3dDH.rst

-Improved syntax error messages for invalid numerical literals.

Misc/NEWS.d/next/Core and Builtins/2018-04-19-08-30-07.bpo-33312.mDe2iL.rst

-Fixed clang ubsan (undefined behavior sanitizer) warnings in dictobject.c by
-adjusting how the internal struct _dictkeysobject shared keys structure is
-declared.

Misc/NEWS.d/next/Core and Builtins/2018-04-22-13-41-59.bpo-33331.s_DxdL.rst

-Modules imported last are now cleared first at interpreter shutdown.

Misc/NEWS.d/next/Core and Builtins/2018-04-24-22-31-04.bpo-33128.g2yLuf.rst

-Fix a bug that causes PathFinder to appear twice on sys.meta_path. Patch by
-Pablo Galindo Salgado.

Misc/NEWS.d/next/Core and Builtins/2018-04-25-20-44-42.bpo-28055.f49kfC.rst

-Fix unaligned accesses in siphash24(). Patch by Rolf Eike Beer.

Misc/NEWS.d/next/Core and Builtins/2018-04-26-22-48-28.bpo-33363.8RCnN2.rst

-Raise a SyntaxError for ``async with`` and ``async for`` statements outside
-of async functions.

Misc/NEWS.d/next/Core and Builtins/2018-05-02-08-36-03.bpo-33391.z4a7rb.rst

-Fix a leak in set_symmetric_difference().

Misc/NEWS.d/next/Core and Builtins/2018-05-05-23-26-58.bpo-20104.tDBciE.rst

-Added support for the `setpgroup`, `resetids`, `setsigmask`, `setsigdef` and
-`scheduler` parameters of `posix_spawn`. Patch by Pablo Galindo.

Misc/NEWS.d/next/Core and Builtins/2018-05-13-01-26-18.bpo-33475.rI0y1U.rst

-Fixed miscellaneous bugs in converting annotations to strings and optimized
-parentheses in the string representation.

Misc/NEWS.d/next/Core and Builtins/2018-05-14-11-00-00.bpo-31849.EmHaH4.rst

-Fix signed/unsigned comparison warning in pyhash.c.

Misc/NEWS.d/next/Core and Builtins/2018-05-14-17-31-02.bpo-33509.pIUfTd.rst

-Fix module_globals parameter of warnings.warn_explicit(): don't crash if
-module_globals is not a dict.

Misc/NEWS.d/next/Core and Builtins/2018-05-14-18-54-03.bpo-25711.9xfq-v.rst

-The :mod:`zipimport` module has been rewritten in pure Python.

Misc/NEWS.d/next/Core and Builtins/2018-05-15-10-48-47.bpo-33499.uBEc06.rst

-Add :envvar:`PYTHONPYCACHEPREFIX` environment variable and :option:`-X`
-``pycache_prefix`` command-line option to set an alternate root directory for
-writing module bytecode cache files.

Misc/NEWS.d/next/Core and Builtins/2018-05-17-13-06-36.bpo-23722.xisqZk.rst

-A :exc:`RuntimeError` is now raised when the custom metaclass doesn't
-provide the ``__classcell__`` entry in the namespace passed to
-``type.__new__``.  A :exc:`DeprecationWarning` was emitted in Python
-3.6--3.7.

Misc/NEWS.d/next/Core and Builtins/2018-05-23-17-18-02.bpo-33462.gurbpbrhe.rst

-Make dict and dict views reversible. Patch by Rémi Lapeyre.

Misc/NEWS.d/next/Core and Builtins/2018-05-23-20-46-14.bpo-33622.xPucO9.rst

-Fixed a leak when the garbage collector fails to add an object with the
-``__del__`` method or referenced by it into the :data:`gc.garbage` list.
-:c:func:`PyGC_Collect` can now be called when an exception is set and
-preserves it.

Misc/NEWS.d/next/Core and Builtins/2018-05-28-12-28-53.bpo-30654.9fDJye.rst

-Fixed reset of the SIGINT handler to SIG_DFL on interpreter shutdown even
-when there was a custom handler set previously. Patch by Philipp Kerling.

Misc/NEWS.d/next/Core and Builtins/2018-05-28-21-17-31.bpo-33597.r0ToM4.rst

-Reduce ``PyGC_Head`` size from 3 words to 2 words.

Misc/NEWS.d/next/Core and Builtins/2018-05-31-14-50-04.bpo-33706.ztlH04.rst

-Fix a crash in Python initialization when parsing the command line options.
-Thanks Christoph Gohlke for the bug report and the fix!

Misc/NEWS.d/next/Core and Builtins/2018-06-05-15-49-02.bpo-30167.e956hA.rst

-``PyRun_SimpleFileExFlags`` removes ``__cached__`` from module in addition
-to ``__file__``.

Misc/NEWS.d/next/Core and Builtins/2018-06-06-23-24-40.bpo-33786.lBvT8z.rst

-Fix asynchronous generators to handle GeneratorExit in athrow() correctly

Misc/NEWS.d/next/Core and Builtins/2018-06-07-18-34-19.bpo-33738.ODZS7a.rst

-Seven macro incompatibilities with the Limited API were fixed, and the
-macros :c:func:`PyIter_Check`, :c:func:`PyIndex_Check` and
-:c:func:`PyExceptionClass_Name` were added as functions.
-A script for automatic macro checks was added.

Misc/NEWS.d/next/Core and Builtins/2018-06-07-20-18-38.bpo-33803.n-Nq6_.rst

-Fix a crash in hamt.c caused by enabling GC tracking for an object that
-hadn't all of its fields set to NULL.

Misc/NEWS.d/next/Core and Builtins/2018-06-15-19-39-06.bpo-33824.DfWHT3.rst

-Fix "LC_ALL=C python3.7 -V": reset properly the command line parser when the
-encoding changes after reading the Python configuration.

Misc/NEWS.d/next/Core and Builtins/2018-06-21-21-42-15.bpo-1617161.tSo2yM.rst

-The hash of :class:`BuiltinMethodType` instances (methods of built-in classes)
-now depends on the hash of the identity of *__self__* instead of its value.
-The hash and equality of :class:`ModuleType` and :class:`MethodWrapperType`
-instances (methods of user-defined classes and some methods of built-in classes
-like ``str.__add__``) now depend on the hash and equality of the identity
-of *__self__* instead of its value.  :class:`MethodWrapperType` instances no
-longer support ordering.

Misc/NEWS.d/next/Core and Builtins/2018-06-23-15-32-02.bpo-33451.sWN-1l.rst

-Close directly executed pyc files before calling ``PyEval_EvalCode()``.

Misc/NEWS.d/next/Core and Builtins/2018-06-25-16-54-05.bpo-24596.Rkwova.rst

-Decref the module object in :c:func:`PyRun_SimpleFileExFlags` before calling
-:c:func:`PyErr_Print()`.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-06-25-20-42-44.bpo-33956.1qoTwD.rst

-Update vendored Expat library copy to version 2.2.5.

Misc/NEWS.d/next/Core and Builtins/2018-06-27-18-56-41.bpo-33985.ILJ3Af.rst

-Implement contextvars.ContextVar.name attribute.

Misc/NEWS.d/next/Core and Builtins/2018-07-03-19-00-10.bpo-33418.cfGm3n.rst

-Fix potential memory leak in function object when it creates reference
-cycle.

Misc/NEWS.d/next/Core and Builtins/2018-07-05-15-51-29.bpo-34042.Gr9XUH.rst

-Fix dict.copy() to maintain correct total refcount (as reported by
-sys.gettotalrefcount()).

Misc/NEWS.d/next/Core and Builtins/2018-07-07-20-15-34.bpo-34066.y9vs6s.rst

-Disabled interruption by Ctrl-C between calling ``open()`` and entering a
-**with** block in ``with open()``.

Misc/NEWS.d/next/Core and Builtins/2018-07-10-11-24-16.bpo-34080.8t7PtO.rst

-Fixed a memory leak in the compiler when it raised some uncommon errors
-during tokenizing.

Misc/NEWS.d/next/Core and Builtins/2018-07-13-22-09-55.bpo-34087.I1Bxfc.rst

-Fix buffer overflow while converting unicode to numeric values.

Misc/NEWS.d/next/Core and Builtins/2018-07-14-08-58-46.bpo-34068.9xfM55.rst

-In :meth:`io.IOBase.close`, ensure that the :attr:`~io.IOBase.closed`
-attribute is not set with a live exception.  Patch by Zackery Spytz and Serhiy
-Storchaka.

Misc/NEWS.d/next/Core and Builtins/2018-07-14-14-01-37.bpo-24618.iTKjD_.rst

-Fixed reading invalid memory when create the code object with too small
-varnames tuple or too large argument counts.

Misc/NEWS.d/next/Core and Builtins/2018-07-16-20-55-29.bpo-34126.mBVmgc.rst

-Fix crashes when profiling certain invalid calls of unbound methods.
-Patch by Jeroen Demeyer.

Misc/NEWS.d/next/Core and Builtins/2018-07-18-08-36-58.bpo-34141.Fo7Q5r.rst

-Optimized pickling atomic types (None, bool, int, float, bytes, str).

Misc/NEWS.d/next/Core and Builtins/2018-07-23-16-34-03.bpo-34125.jCl2Q2.rst

-Profiling of unbound built-in methods now works when ``**kwargs`` is given.

Misc/NEWS.d/next/Core and Builtins/2018-07-23-21-49-05.bpo-34149.WSV-_g.rst

-Fix min and max functions to get default behavior when key is None.

Misc/NEWS.d/next/Core and Builtins/2018-07-24-12-54-57.bpo-33237.O95mps.rst

-Improved :exc:`AttributeError` message for partially initialized module.

Misc/NEWS.d/next/Core and Builtins/2018-07-25-19-23-33.bpo-34170.v1h_H2.rst

--X dev: it is now possible to override the memory allocator using
-PYTHONMALLOC even if the developer mode is enabled.

Misc/NEWS.d/next/Core and Builtins/2018-07-25-20-26-02.bpo-34151.Q2pK9Q.rst

-Performance of list concatenation, repetition and slicing operations is
-slightly improved. Patch by Sergey Fedoseev.

Misc/NEWS.d/next/Core and Builtins/2018-07-27-20-04-52.bpo-34100.ypJQX1.rst

-Compiler now merges constants in tuples and frozensets recursively. Code
-attributes like ``co_names`` are merged too.

Misc/NEWS.d/next/Core and Builtins/2018-07-28-10-34-00.bpo-34113.eZ5FWV.rst

-Fixed crash on debug builds when opcode stack was adjusted with negative
-numbers. Patch by Constantin Petrisor.

Misc/NEWS.d/next/Core and Builtins/2018-08-02-22-34-59.bpo-34320.hNshAA.rst

-Fix ``dict(od)`` didn't copy iteration order of OrderedDict.

Misc/NEWS.d/next/Core and Builtins/2018-08-09-18-42-49.bpo-34353.GIOm_8.rst

-Added the "socket" option in the `stat.filemode()` Python implementation to
-match the C implementation.

Misc/NEWS.d/next/Core and Builtins/2018-08-10-15-05-00.bpo-34377.EJMMY4.rst

-Update valgrind suppression list to use
-``_PyObject_Free``/``_PyObject_Realloc``
-instead of ``PyObject_Free``/``PyObject_Realloc``.

Misc/NEWS.d/next/Core and Builtins/2018-08-12-16-03-58.bpo-33073.XWu1Jh.rst

-Added as_integer_ratio to ints to make them more interoperable with floats.

Misc/NEWS.d/next/Core and Builtins/2018-08-14-03-52-43.bpo-34400.AJD0bz.rst

-Fix undefined behavior in parsetok.c.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-08-14-22-35-19.bpo-34408.aomWYW.rst

-Prevent a null pointer dereference and resource leakage in ``PyInterpreterState_New()``.

Misc/NEWS.d/next/Core and Builtins/2018-08-15-20-46-49.bpo-12458.ApHbx5.rst

-Tracebacks show now correct line number for subexpressions in multiline
-expressions. Tracebacks show now the line number of the first line for
-multiline expressions instead of the line number of the last subexpression.

Misc/NEWS.d/next/Core and Builtins/2018-08-28-01-45-01.bpo-34523.aUUkc3.rst

-The Python filesystem encoding is now read earlier during the Python
-initialization.

Misc/NEWS.d/next/Core and Builtins/2018-08-28-10-49-55.bpo-34403.4Q3LzP.rst

-On HP-UX with C or POSIX locale, sys.getfilesystemencoding() now returns
-"ascii" instead of "roman8" (when the UTF-8 Mode is disabled and the C locale
-is not coerced).

Misc/NEWS.d/next/Core and Builtins/2018-08-28-11-52-13.bpo-34527.sh5MQJ.rst

-The UTF-8 Mode is now also enabled by the "POSIX" locale, not only by the "C"
-locale.

Misc/NEWS.d/next/Core and Builtins/2018-08-28-11-53-39.bpo-34527.aBEX9b.rst

-On FreeBSD, Py_DecodeLocale() and Py_EncodeLocale() now also forces the
-ASCII encoding if the LC_CTYPE locale is "POSIX", not only if the LC_CTYPE
-locale is "C".

Misc/NEWS.d/next/Core and Builtins/2018-08-28-17-48-40.bpo-34485.aFwck2.rst

-Python now gets the locale encoding with C code to initialize the encoding
-of standard streams like sys.stdout. Moreover, the encoding is now
-initialized to the Python codec name to get a normalized encoding name and
-to ensure that the codec is loaded. The change avoids importing _bootlocale
-and _locale modules at startup by default.

Misc/NEWS.d/next/Core and Builtins/2018-08-28-23-01-14.bpo-34485.dq1Kqk.rst

-Fix the error handler of standard streams like sys.stdout:
-PYTHONIOENCODING=":" is now ignored instead of setting the error handler to
-"strict".

Misc/NEWS.d/next/Core and Builtins/2018-08-29-09-27-47.bpo-34485.5aJCmw.rst

-Standard streams like sys.stdout now use the "surrogateescape" error
-handler, instead of "strict", on the POSIX locale (when the C locale is not
-coerced and the UTF-8 Mode is disabled).

Misc/NEWS.d/next/Core and Builtins/2018-08-29-11-04-19.bpo-34485.c2AFdp.rst

-On Windows, the LC_CTYPE is now set to the user preferred locale at startup.
-Previously, the LC_CTYPE locale was "C" at startup, but changed when calling
-setlocale(LC_CTYPE, "") or setlocale(LC_ALL, "").

Misc/NEWS.d/next/Core and Builtins/2018-09-05-22-56-52.bpo-34588.UIuPmL.rst

-Fix an off-by-one in the recursive call pruning feature of traceback
-formatting.

Misc/NEWS.d/next/Core and Builtins/2018-09-11-15-19-37.bpo-1621.7o19yG.rst

-Do not assume signed integer overflow behavior (C undefined behavior) when
-performing set hash table resizing.

Misc/NEWS.d/next/Core and Builtins/2018-09-11-17-25-44.bpo-34637.HSLqY4.rst

-Make the *start* argument to *sum()* visible as a keyword argument.

Misc/NEWS.d/next/Core and Builtins/2018-09-11-23-12-33.bpo-34641.gFBCc9.rst

-Further restrict the syntax of the left-hand side of keyword arguments in
-function calls. In particular, ``f((keyword)=arg)`` is now disallowed.

Misc/NEWS.d/next/Core and Builtins/2018-09-11-23-50-40.bpo-32236.3RupnN.rst

-Warn that line buffering is not supported if :func:`open` is called with
-binary mode and ``buffering=1``.

Misc/NEWS.d/next/Core and Builtins/2018-09-13-12-06-09.bpo-34653.z8NE-i.rst

-Remove unused function PyParser_SimpleParseStringFilename.

Misc/NEWS.d/next/Core and Builtins/2018-09-13-12-21-08.bpo-34651.v-bUeV.rst

-Only allow the main interpreter to fork.  The avoids the possibility of
-affecting the main interpreter, which is critical to operation of the
-runtime.

Misc/NEWS.d/next/Core and Builtins/2018-09-15-19-32-34.bpo-34683.msCiQE.rst

-Fixed a bug where some SyntaxError error pointed to locations that were off-by-one.

Misc/NEWS.d/next/Core and Builtins/2018-09-19-06-57-34.bpo-34735.-3mrSJ.rst

-Fix a memory leak in Modules/timemodule.c.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-09-20-15-41-58.bpo-34751.Yiv0pV.rst

-The hash function for tuples is now based on xxHash
-which gives better collision results on (formerly) pathological cases.
-Additionally, on 64-bit systems it improves tuple hashes in general.
-Patch by Jeroen Demeyer with substantial contributions by Tim Peters.

Misc/NEWS.d/next/Core and Builtins/2018-09-21-11-06-56.bpo-34762.1nN53m.rst

-Fix contextvars C API to use PyObject* pointer types.

Misc/NEWS.d/next/Core and Builtins/2018-09-24-17-51-15.bpo-30156.pH0j5j.rst

-The C function ``property_descr_get()`` uses a "cached" tuple to optimize
-function calls. But this tuple can be discovered in debug mode with
-:func:`sys.getobjects()`. Remove the optimization, it's not really worth it
-and it causes 3 different crashes last years.

Misc/NEWS.d/next/Core and Builtins/2018-09-27-11-10-02.bpo-34824.VLlCaU.rst

-Fix a possible null pointer dereference in Modules/_ssl.c. Patch by Zackery
-Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-09-30-11-19-55.bpo-34850.CbgDwb.rst

-The compiler now produces a :exc:`SyntaxWarning` when identity checks
-(``is`` and ``is not``) are used with certain types of literals
-(e.g. strings, ints).  These can often work by accident in CPython,
-but are not guaranteed by the language spec.  The warning advises users
-to use equality tests (``==`` and ``!=``) instead.

Misc/NEWS.d/next/Core and Builtins/2018-09-30-19-27-13.bpo-34854.6TKTcB.rst

-Fixed a crash in compiling string annotations containing a lambda with a
-keyword-only argument that doesn't have a default value.

Misc/NEWS.d/next/Core and Builtins/2018-10-01-10-41-53.bpo-32912.JeIOdM.rst

-A :exc:`SyntaxWarning` is now emitted instead of a :exc:`DeprecationWarning`
-for invalid escape sequences in string and bytes literals.

Misc/NEWS.d/next/Core and Builtins/2018-10-02-09-10-47.bpo-34784.07hdgD.rst

-Fix the implementation of PyStructSequence_NewType in order to create heap
-allocated StructSequences.

Misc/NEWS.d/next/Core and Builtins/2018-10-02-22-55-11.bpo-34879.7VNH2a.rst

-Fix a possible null pointer dereference in bytesobject.c.  Patch by Zackery
-Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-10-06-14-02-51.bpo-34876.oBKBA4.rst

-The *lineno* and *col_offset* attributes of the AST for decorated function
-and class refer now to the position of the corresponding ``def``, ``async
-def`` and ``class`` instead of the position of the first decorator. This
-leads to more correct line reporting in tracing. This is the only case when
-the position of child AST nodes can preceed the position of the parent AST
-node.

Misc/NEWS.d/next/Core and Builtins/2018-10-13-16-42-03.bpo-34973.B5M-3g.rst

-Fixed crash in :func:`bytes` when the :class:`list` argument is mutated
-while it is iterated.

Misc/NEWS.d/next/Core and Builtins/2018-10-13-17-40-15.bpo-34939.0gpxlJ.rst

-Allow annotated names in module namespace that are declared global before
-the annotation happens. Patch by Pablo Galindo.

Misc/NEWS.d/next/Core and Builtins/2018-10-13-22-24-19.bpo-34974.7LgTc2.rst

-:class:`bytes` and :class:`bytearray` constructors no longer convert
-unexpected exceptions (e.g. :exc:`MemoryError` and :exc:`KeyboardInterrupt`)
-to :exc:`TypeError`.

Misc/NEWS.d/next/Core and Builtins/2018-10-14-17-26-41.bpo-34983.l8XaZd.rst

-Expose :meth:`symtable.Symbol.is_nonlocal` in the symtable module. Patch by
-Pablo Galindo.

Misc/NEWS.d/next/Core and Builtins/2018-10-20-10-26-15.bpo-35029.t4tZcQ.rst

-:exc:`SyntaxWarning` raised as an exception at code generation time will be
-now replaced with a :exc:`SyntaxError` for better error reporting.

Misc/NEWS.d/next/Core and Builtins/2018-10-20-18-05-58.bpo-16806.zr3A9N.rst

-Fix ``lineno`` and ``col_offset`` for multi-line string tokens.

Misc/NEWS.d/next/Core and Builtins/2018-10-21-17-43-48.bpo-29743.aeCcKR.rst

-Raise :exc:`ValueError` instead of :exc:`OverflowError` in case of a negative
-``_length_`` in a :class:`ctypes.Array` subclass.  Also raise :exc:`TypeError`
-instead of :exc:`AttributeError` for non-integer ``_length_``.
-Original patch by Oren Milman.

Misc/NEWS.d/next/Core and Builtins/2018-10-23-15-03-53.bpo-35050.49wraS.rst

-:mod:`socket`: Fix off-by-one bug in length check for ``AF_ALG`` name and type.

Misc/NEWS.d/next/Core and Builtins/2018-10-25-20-53-32.bpo-29341.jH-AMF.rst

-Clarify in the docstrings of :mod:`os` methods that path-like objects are also accepted
-as input parameters.

Misc/NEWS.d/next/Core and Builtins/2018-11-03-10-37-29.bpo-28401.RprDIg.rst

-Debug builds will no longer to attempt to import extension modules built
-for the ABI as they were never compatible to begin with.
-Patch by Stefano Rivera.

Misc/NEWS.d/next/Core and Builtins/2018-11-04-18-13-40.bpo-34022.U3btVj.rst

-Fix handling of hash-based bytecode files in :mod:`zipimport`.
-Patch by Elvis Pranskevichus.

Misc/NEWS.d/next/Core and Builtins/2018-11-05-21-19-05.bpo-35169._FyPI2.rst

-Improved error messages for forbidden assignments.

Misc/NEWS.d/next/Core and Builtins/2018-11-08-15-00-58.bpo-35193.HzPS6R.rst

-Fix an off by one error in the bytecode peephole optimizer where it could read
-bytes beyond the end of bounds of an array when removing unreachable code.
-This bug was present in every release of Python 3.6 and 3.7 until now.

Misc/NEWS.d/next/Core and Builtins/2018-11-12-11-38-06.bpo-35214.PCHKbX.rst

-The interpreter and extension modules have had annotations added so that
-they work properly under clang's Memory Sanitizer.  A new configure flag
---with-memory-sanitizer has been added to make test builds of this nature
-easier to perform.

Misc/NEWS.d/next/Core and Builtins/2018-11-13-00-40-35.bpo-35214.OQBjph.rst

-Fixed an out of bounds memory access when parsing a truncated unicode
-escape sequence at the end of a string such as ``'\N'``.  It would read
-one byte beyond the end of the memory allocation.

Misc/NEWS.d/next/Core and Builtins/2018-11-13-01-03-10.bpo-32492.voIdcp.rst

-Speed up :class:`namedtuple` attribute access by 1.6x using a C fast-path
-for the name descriptors. Patch by Pablo Galindo.

Misc/NEWS.d/next/Core and Builtins/2018-11-13-14-26-54.bpo-35224.F0B6UQ.rst

-Implement :pep:`572` (assignment expressions). Patch by Emily Morehouse.

Misc/NEWS.d/next/Core and Builtins/2018-11-17-10-18-29.bpo-35269.gjm1LO.rst

-Fix a possible segfault involving a newly-created coroutine.  Patch by
-Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-11-20-22-33-38.bpo-33954.RzSngM.rst

-For :meth:`str.format`, :meth:`float.__format__` and
-:meth:`complex.__format__` methods for non-ASCII decimal point when using
-the "n" formatter.

Misc/NEWS.d/next/Core and Builtins/2018-11-21-14-05-51.bpo-31241.Kin10-.rst

-The *lineno* and *col_offset* attributes of AST nodes for list comprehensions,
-generator expressions and tuples are now point to the opening parenthesis or
-square brace. For tuples without parenthesis they point to the position of
-the first item.

Misc/NEWS.d/next/Core and Builtins/2018-11-29-23-59-52.bpo-35336.8LOz4F.rst

-Fix PYTHONCOERCECLOCALE=1 environment variable: only coerce the C locale
-if the LC_CTYPE locale is "C".

Misc/NEWS.d/next/Core and Builtins/2018-12-01-19-20-53.bpo-35372.RwVJjZ.rst

-Fixed the code page decoder for input longer than 2 GiB containing
-undecodable bytes.

Misc/NEWS.d/next/Core and Builtins/2018-12-03-21-20-24.bpo-35357.rhhoiC.rst

-Internal attributes' names of unittest.mock._Call and
-unittest.mock.MagicProxy (name, parent & from_kall) are now prefixed with
-_mock_ in order to prevent clashes with widely used object attributes.
-Fixed minor typo in test function name.

Misc/NEWS.d/next/Core and Builtins/2018-12-05-16-24-05.bpo-35423.UIie_O.rst

-Separate the signal handling trigger in the eval loop from the "pending
-calls" machinery. There is no semantic change and the difference in
-performance is insignificant.

Misc/NEWS.d/next/Core and Builtins/2018-12-07-02-38-01.bpo-35436.0VW7p9.rst

-Fix various issues with memory allocation error handling.  Patch by Zackery
-Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-12-09-13-09-39.bpo-35444.9kYn4V.rst

-Fixed error handling in pickling methods when fail to look up builtin
-"getattr". Sped up pickling iterators.

Misc/NEWS.d/next/Core and Builtins/2018-12-14-18-02-34.bpo-35494.IWOPtb.rst

-Improved syntax error messages for unbalanced parentheses in f-string.

Misc/NEWS.d/next/Core and Builtins/2018-12-15-00-47-41.bpo-35504.9gVuen.rst

-Fixed a SystemError when delete the characters_written attribute of an OSError.

Misc/NEWS.d/next/Core and Builtins/2018-12-15-14-01-45.bpo-35504.JtKczP.rst

-Fix segfaults and :exc:`SystemError`\ s when deleting certain attributes.
-Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-12-21-13-29-30.bpo-35552.1DzQQc.rst

-Format characters ``%s`` and ``%V`` in :c:func:`PyUnicode_FromFormat` and
-``%s`` in :c:func:`PyBytes_FromFormat` no longer read memory past the
-limit if *precision* is specified.

Misc/NEWS.d/next/Core and Builtins/2018-12-22-22-19-51.bpo-35560.9vMWSP.rst

-Fix an assertion error in :func:`format` in debug build for floating point
-formatting with "n" format, zero padding and small width. Release build is
-not impacted. Patch by Karthikeyan Singaravelan.

Misc/NEWS.d/next/Core and Builtins/2018-12-30-15-36-23.bpo-35214.GWDQcv.rst

-clang Memory Sanitizer build instrumentation was added to work around false
-positives from posix, socket, time, test_io, and test_faulthandler.

Misc/NEWS.d/next/Core and Builtins/2018-12-31-02-37-20.bpo-35623.24AQhY.rst

-Fix a crash when sorting very long lists. Patch by Stephan Hohe.

Misc/NEWS.d/next/Core and Builtins/2019-01-05-18-39-49.bpo-35634.nVP_gs.rst

-``func(**kwargs)`` will now raise an error when ``kwargs`` is a mapping
-containing multiple entries with the same key. An error was already raised
-when other keyword arguments are passed before ``**kwargs`` since Python 3.6.

Misc/NEWS.d/next/Core and Builtins/2019-01-12-23-33-04.bpo-35720.LELKQx.rst

-Fixed a minor memory leak in pymain_parse_cmdline_impl function in Modules/main.c
\ No newline at end of file

Misc/NEWS.d/next/Core and Builtins/2019-01-19-19-41-53.bpo-33416.VDeOU5.rst

-Add end line and end column position information to the Python AST nodes.
-This is a C-level backwards incompatible change.
\ No newline at end of file

Misc/NEWS.d/next/Core and Builtins/2019-01-22-18-50-21.bpo-35713.bTeUsa.rst

-Reorganize Python initialization to get working exceptions and sys.stderr
-earlier.

Misc/NEWS.d/next/Core and Builtins/2019-01-22-19-17-27.bpo-35766.gh1tHZ.rst

-Add the option to parse PEP 484 type comments in the ast module. (Off by default.) This is merging the key functionality of the third party fork thereof, [typed_ast](https://github.com/python/typed_ast).
\ No newline at end of file

Misc/NEWS.d/next/Core and Builtins/2019-01-24-13-25-21.bpo-35814.r_MjA6.rst

-Allow same right hand side expressions in annotated assignments as in normal ones.
-In particular, ``x: Tuple[int, int] = 1, 2`` (without parentheses on the right) is now allowed.
\ No newline at end of file

Misc/NEWS.d/next/Core and Builtins/2019-02-01-22-38-11.bpo-35877.Jrse8f.rst

-Make parenthesis optional for named expressions in while statement. Patch by
-Karthikeyan Singaravelan.

Misc/NEWS.d/next/Documentation/2017-09-13-07-14-59.bpo-31432.yAY4Z3.rst

-Clarify meaning of CERT_NONE, CERT_OPTIONAL, and CERT_REQUIRED flags for
-ssl.SSLContext.verify_mode.

Misc/NEWS.d/next/Documentation/2017-10-23-13-41-12.bpo-25041.iAo2gW.rst

-Document ``AF_PACKET`` in the :mod:`socket` module.

Misc/NEWS.d/next/Documentation/2017-12-22-17-29-37.bpo-32337.eZe-ID.rst

-Update documentation related with ``dict`` order.

Misc/NEWS.d/next/Documentation/2018-01-13-20-30-53.bpo-8243.s98r28.rst

-Add a note about curses.addch and curses.addstr exception behavior when
-writing outside a window, or pad.

Misc/NEWS.d/next/Documentation/2018-01-25-13-58-49.bpo-30607.4dXxiq.rst

-Use the externalized ``python-docs-theme`` package when building the
-documentation.

Misc/NEWS.d/next/Documentation/2018-01-25-14-23-12.bpo-31972.w1m_8r.rst

-Improve docstrings for `pathlib.PurePath` subclasses.

Misc/NEWS.d/next/Documentation/2018-01-30-11-28-27.bpo-32722.frdp6A.rst

-Remove the bad example in the tutorial of the Generator Expression. Patch by
-Stéphane Wirtel

Misc/NEWS.d/next/Documentation/2018-02-01-10-57-24.bpo-20709.1flcnc.rst

-Remove the paragraph where we explain that os.utime() does not support a
-directory as path under Windows. Patch by Jan-Philip Gehrcke

Misc/NEWS.d/next/Documentation/2018-02-02-07-41-57.bpo-32614.LSqzGw.rst

-Modify RE examples in documentation to use raw strings to prevent
-:exc:`DeprecationWarning` and add text to REGEX HOWTO to highlight the
-deprecation.

Misc/NEWS.d/next/Documentation/2018-02-03-06-11-37.bpo-8722.MPyVyj.rst

-Document :meth:`__getattr__` behavior when property :meth:`get` method
-raises :exc:`AttributeError`.

Misc/NEWS.d/next/Documentation/2018-02-05-15-05-53.bpo-32613.TDjgM1.rst

-Update the faq/windows.html to use the py command from PEP 397 instead of
-python.

Misc/NEWS.d/next/Documentation/2018-02-10-12-48-38.bpo-11015.-gUf34.rst

-Update :mod:`test.support` documentation.

Misc/NEWS.d/next/Documentation/2018-02-10-15-16-04.bpo-32800.FyrqCk.rst

-Update link to w3c doc for xml default namespaces.

Misc/NEWS.d/next/Documentation/2018-02-14-11-10-41.bpo-32436.TTJ2jb.rst

-Add documentation for the contextvars module (PEP 567).

Misc/NEWS.d/next/Documentation/2018-02-23-12-48-03.bpo-17232.tmuTKL.rst

-Clarify docs for -O and -OO.  Patch by Terry Reedy.

Misc/NEWS.d/next/Documentation/2018-02-25-16-33-35.bpo-28124._uzkgq.rst

-The ssl module function ssl.wrap_socket() has been de-emphasized
-and deprecated in favor of the more secure and efficient
-SSLContext.wrap_socket() method.

Misc/NEWS.d/next/Documentation/2018-03-11-00-16-56.bpo-27428.B7A8FT.rst

-Update documentation to clarify that ``WindowsRegistryFinder`` implements
-``MetaPathFinder``. (Patch by Himanshu Lakhara)

Misc/NEWS.d/next/Documentation/2018-03-11-18-53-47.bpo-18802.JhAqH3.rst

-Documentation changes for ipaddress.  Patch by Jon Foster and Berker Peksag.

Misc/NEWS.d/next/Documentation/2018-03-20-20-11-05.bpo-28247.-V-WS-.rst

-Update :mod:`zipapp` documentation to describe how to make standalone
-applications.

Misc/NEWS.d/next/Documentation/2018-03-22-19-23-04.bpo-27212.wrE5KR.rst

-Modify documentation for the :func:`islice` recipe to consume initial values
-up to the start index.

Misc/NEWS.d/next/Documentation/2018-03-28-17-03-17.bpo-33126.5UGkNv.rst

-Document PyBuffer_ToContiguous().

Misc/NEWS.d/next/Documentation/2018-04-01-14-30-36.bpo-33195.dRS-XX.rst

-Deprecate ``Py_UNICODE`` usage in ``c-api/arg`` document. ``Py_UNICODE``
-related APIs are deprecated since Python 3.3, but it is missed in the
-document.

Misc/NEWS.d/next/Documentation/2018-04-01-21-03-41.bpo-33201.aa8Lkl.rst

-Modernize documentation for writing C extension types.

Misc/NEWS.d/next/Documentation/2018-04-20-14-09-36.bpo-33276.rA1z_3.rst

-Clarify that the ``__path__`` attribute on modules cannot be just any value.

Misc/NEWS.d/next/Documentation/2018-04-29-04-02-18.bpo-33378.-anAHN.rst

-Add Korean language switcher for https://docs.python.org/3/

Misc/NEWS.d/next/Documentation/2018-05-13-14-44-30.bpo-33487.iLDzFb.rst

-BZ2file now emit a DeprecationWarning when buffering=None is passed, the
-deprecation message and documentation also now explicitly state it is
-deprecated since 3.0.

Misc/NEWS.d/next/Documentation/2018-05-14-15-15-41.bpo-33421.3GU_QO.rst

-Add missing documentation for ``typing.AsyncContextManager``.

Misc/NEWS.d/next/Documentation/2018-05-14-20-08-58.bpo-33503.Wvt0qg.rst

-Fix broken pypi link

Misc/NEWS.d/next/Documentation/2018-05-21-14-36-12.bpo-33594.-HRcyX.rst

-Document ``getargspec``, ``from_function`` and ``from_builtin`` as
-deprecated in their respective docstring, and include version since
-deprecation in DeprecationWarning message.

Misc/NEWS.d/next/Documentation/2018-05-22-11-47-14.bpo-33604.5YHTpz.rst

-Update HMAC md5 default to a DeprecationWarning, bump removal to 3.8.

Misc/NEWS.d/next/Documentation/2018-05-23-11-59-51.bpo-32436.S1LGPa.rst

-Document :pep:`567` changes to asyncio.

Misc/NEWS.d/next/Documentation/2018-05-29-16-02-31.bpo-23859.E5gba1.rst

-Document that `asyncio.wait()` does not cancel its futures on timeout.

Misc/NEWS.d/next/Documentation/2018-06-01-12-27-40.bpo-33736.JVegIu.rst

-Improve the documentation of :func:`asyncio.open_connection`,
-:func:`asyncio.start_server` and their UNIX socket counterparts.

Misc/NEWS.d/next/Documentation/2018-06-07-08-33-45.bpo-17045.ZNx6KU.rst

-Improve the C-API doc for PyTypeObject.  This includes adding several
-quick-reference tables and a lot of missing slot/typedef entries.  The
-existing entries were also cleaned up with a slightly more consistent format.

Misc/NEWS.d/next/Documentation/2018-06-08-23-37-14.bpo-33197.OERTKf.rst

-Add versionadded tag to the documentation of ParameterKind.description

Misc/NEWS.d/next/Documentation/2018-06-08-23-46-01.bpo-33409.r4z9MM.rst

-Clarified the relationship between :pep:`538`'s PYTHONCOERCECLOCALE and PEP
-540's PYTHONUTF8 mode.

Misc/NEWS.d/next/Documentation/2018-06-15-14-58-45.bpo-33847.IIDp6t.rst

-Add '@' operator entry to index.

Misc/NEWS.d/next/Documentation/2018-06-22-08-38-29.bpo-33460.kHt4D0.rst

-replaced ellipsis with correct error codes in tutorial chapter 3.

Misc/NEWS.d/next/Documentation/2018-07-07-20-38-41.bpo-34065.1snofM.rst

-Fix wrongly written basicConfig documentation markup syntax

Misc/NEWS.d/next/Documentation/2018-07-28-17-17-42.bpo-20177.cOZJWp.rst

-Migrate datetime.date.fromtimestamp to Argument Clinic. Patch by Tim Hoffmann.

Misc/NEWS.d/next/Documentation/2018-09-06-22-39-47.bpo-28617.MjnJLz.rst

-Fixed info in the stdtypes docs concerning the types that support membership
-tests.

Misc/NEWS.d/next/Documentation/2018-09-12-10-18-04.bpo-34552.p9PoYv.rst

-Make clear that ``==`` operator sometimes is equivalent to `is`. The ``<``,
-``<=``, ``>`` and ``>=`` operators are only defined where they make sense.

Misc/NEWS.d/next/Documentation/2018-09-24-12-47-08.bpo-34790.G2KXIH.rst

-Document how passing coroutines to asyncio.wait() can be confusing.

Misc/NEWS.d/next/Documentation/2018-10-03-20-39-25.bpo-11233.BX6Gen.rst

-Create availability directive for documentation.  Original patch by Georg
-Brandl.

Misc/NEWS.d/next/Documentation/2018-10-08-19-15-28.bpo-32174.YO9CYm.rst

-chm document displays non-ASCII charaters properly on some MBCS Windows
-systems.

Misc/NEWS.d/next/Documentation/2018-10-10-00-34-08.bpo-34913.kVd1Fv.rst

-Add documentation about the new command line interface of the gzip module.

Misc/NEWS.d/next/Documentation/2018-10-13-07-39-57.bpo-34967.E40tFP.rst

-Use app.add_object_type() instead of the deprecated Sphinx function
-app.description_unit()

Misc/NEWS.d/next/Documentation/2018-10-21-02-20-36.bpo-35035.4zBObK.rst

-Rename documentation for :mod:`email.utils` to ``email.utils.rst``.

Misc/NEWS.d/next/Documentation/2018-10-22-14-09-58.bpo-35044.qjvNtI.rst

-Fix the documentation with the role ``exc`` for the appropriated exception. Patch by
-Stéphane Wirtel

Misc/NEWS.d/next/Documentation/2018-10-22-14-17-57.bpo-35042.1UGv1a.rst

-Replace PEP XYZ by the pep role and allow to use the direct links to the PEPs.

Misc/NEWS.d/next/Documentation/2018-10-25-17-45-09.bpo-35038.2eVOYS.rst

-Fix the documentation about an unexisting `f_restricted` attribute in the
-frame object. Patch by Stéphane Wirtel

Misc/NEWS.d/next/Documentation/2018-10-28-16-51-31.bpo-35089._stCpS.rst

-Remove mention of ``typing.io`` and ``typing.re``. Their types should be
-imported from ``typing`` directly.

Misc/NEWS.d/next/Documentation/2018-11-04-22-03-56.bpo-10536.a0IsfE.rst

-Enhance the gettext docs. Patch by Éric Araujo

Misc/NEWS.d/next/Documentation/2018-12-16-16-14-44.bpo-35511.iVcyav.rst

-Specified that profile.Profile class doesn't not support enable or disable
-methods. Also, elaborated that Profile object as a context manager is only
-supported in cProfile module.

Misc/NEWS.d/next/Documentation/2018-12-22-22-52-05.bpo-35564.TuEU_D.rst

-Explicitly set master_doc variable in conf.py for compliance with Sphinx 2.0

Misc/NEWS.d/next/Documentation/2018-12-23-23-52-31.bpo-34764.DwOGeT.rst

-Improve example of iter() with 2nd sentinel argument.
\ No newline at end of file

Misc/NEWS.d/next/Documentation/2019-01-15-21-45-27.bpo-21257.U9LKkx.rst

-Document :func:`http.client.parse_headers`.

Misc/NEWS.d/next/IDLE/2018-02-04-17-52-54.bpo-32765.qm0eCu.rst

-Update configdialog General tab docstring to add new widgets to the widget list.

Misc/NEWS.d/next/IDLE/2018-02-12-08-08-45.bpo-32831.srDRvU.rst

-Add docstrings and tests for codecontext.

Misc/NEWS.d/next/IDLE/2018-02-12-11-05-22.bpo-32826.IxNZrk.rst

-Add "encoding=utf-8" to open() in IDLE's test_help_about.
-GUI test test_file_buttons() only looks at initial ascii-only lines,
-but failed on systems where open() defaults to 'ascii' because
-readline() internally reads and decodes far enough ahead to encounter
-a non-ascii character in CREDITS.txt.

Misc/NEWS.d/next/IDLE/2018-02-12-17-22-48.bpo-32837.-33QPl.rst

-Using the system and place-dependent default encoding for open() is a bad
-idea for IDLE's system and location-independent files.

Misc/NEWS.d/next/IDLE/2018-02-19-10-56-41.bpo-32874.6pZ9Gv.rst

-Add tests for pyparse.

Misc/NEWS.d/next/IDLE/2018-02-22-00-09-27.bpo-32905.VlXj0x.rst

-Remove unused code in pyparse module.

Misc/NEWS.d/next/IDLE/2018-02-23-07-32-36.bpo-32916.4MsQ5F.rst

-Change ``str`` to ``code`` in pyparse.

Misc/NEWS.d/next/IDLE/2018-02-24-18-20-50.bpo-32940.ZaJ1Rf.rst

-Simplify and rename StringTranslatePseudoMapping in pyparse.

Misc/NEWS.d/next/IDLE/2018-03-05-01-29-05.bpo-32984.NGjgT4.rst

-Set ``__file__`` while running a startup file.  Like Python, IDLE optionally
-runs one startup file in the Shell window before presenting the first interactive
-input prompt.  For IDLE, ``-s`` runs a file named in environmental variable
- :envvar:`IDLESTARTUP` or  :envvar:`PYTHONSTARTUP`; ``-r file`` runs
-``file``.  Python sets ``__file__`` to the startup file name before running the
-file and unsets it before the first prompt.  IDLE now does the same when run
-normally, without the ``-n`` option.

Misc/NEWS.d/next/IDLE/2018-04-02-00-28-13.bpo-33204.NBsuIv.rst

-IDLE: consistently color invalid string prefixes. A 'u' string prefix cannot
-be paired with either 'r' or 'f'. Consistently color as much of the prefix,
-starting at the right, as is valid. Revise and extend colorizer test.

Misc/NEWS.d/next/IDLE/2018-04-29-16-13-02.bpo-21474.bglg-F.rst

-Update word/identifier definition from ascii to unicode. In text and entry
-boxes, this affects selection by double-click, movement left/right by
-control-left/right, and deletion left/right by control-BACKSPACE/DEL.

Misc/NEWS.d/next/IDLE/2018-05-17-19-41-12.bpo-33564.XzHZJe.rst

-IDLE's code context now recognizes async as a block opener.

Misc/NEWS.d/next/IDLE/2018-05-23-19-51-07.bpo-33628.sLlFLO.rst

-IDLE: Cleanup codecontext.py and its test.
-

Misc/NEWS.d/next/IDLE/2018-05-24-20-42-44.bpo-33642.J0VQbS.rst

-Display up to maxlines non-blank lines for Code Context.
-If there is no current context, show a single blank line.

Misc/NEWS.d/next/IDLE/2018-05-29-07-14-37.bpo-33679.MgX_Ui.rst

-Enable theme-specific color configuration for Code Context.
-Use the Highlights tab to see the setting for built-in themes
-or add settings to custom themes.

Misc/NEWS.d/next/IDLE/2018-06-03-09-13-28.bpo-33664.PZzQyL.rst

-Scroll IDLE editor text by lines.
-Previously, the mouse wheel and scrollbar slider moved text by a fixed
-number of pixels, resulting in partial lines at the top of the editor
-box.  The change also applies to the shell and grep output windows,
-but not to read-only text views.

Misc/NEWS.d/next/IDLE/2018-06-03-20-12-57.bpo-33763.URiFlE.rst

-IDLE: Use read-only text widget for code context instead of label widget.

Misc/NEWS.d/next/IDLE/2018-06-04-19-23-11.bpo-33768.I_2qpV.rst

-Clicking on a context line moves that line to the top of the editor window.

Misc/NEWS.d/next/IDLE/2018-06-10-17-59-36.bpo-33656.60ZqJS.rst

-On Windows, add API call saying that tk scales for DPI. On Windows
-8.1+ or 10, with DPI compatibility properties of the Python binary
-unchanged, and a monitor resolution greater than 96 DPI, this should
-make text and lines sharper.  It should otherwise have no effect.

Misc/NEWS.d/next/IDLE/2018-06-14-11-35-50.bpo-33855.XL230W.rst

-Minimally test all IDLE modules. Add missing files, import module,
-instantiate classes, and check coverage. Check existing files.

Misc/NEWS.d/next/IDLE/2018-06-14-13-23-55.bpo-33839.ZlJzHa.rst

-IDLE: refactor ToolTip and CallTip and add documentation and tests

Misc/NEWS.d/next/IDLE/2018-06-16-21-54-45.bpo-33856.TH8WHU.rst

-Add "help" in the welcome message of IDLE

Misc/NEWS.d/next/IDLE/2018-06-19-22-21-27.bpo-33907.z-_B3N.rst

-For consistency and clarity, rename an IDLE module and classes.
-Module calltips and its class CallTips are now calltip and Calltip.
-In module calltip_w, class CallTip is now CalltipWindow.

Misc/NEWS.d/next/IDLE/2018-06-20-12-40-54.bpo-33904.qm0eCu.rst

-IDLE: In rstrip, rename class RstripExtension as Rstrip

Misc/NEWS.d/next/IDLE/2018-06-20-16-27-48.bpo-33917.ZXHs8x.rst

-Fix and document idlelib/idle_test/template.py. The revised file compiles,
-runs, and tests OK.  idle_test/README.txt explains how to use it to create
-new IDLE test files.

Misc/NEWS.d/next/IDLE/2018-06-20-19-16-24.bpo-33906.a1lXq0.rst

-Rename idlelib.windows as window Match Window on the main menu and remove
-last plural module name.

Misc/NEWS.d/next/IDLE/2018-06-20-22-14-07.bpo-33924.6Rz1wt.rst

-Change mainmenu.menudefs key 'windows' to 'window'. Every other menudef key
-is lowercase version of main menu entry.

Misc/NEWS.d/next/IDLE/2018-06-21-20-35-33.bpo-33905.W2mhiY.rst

-Add test for idlelib.stackview.StackBrowser.

Misc/NEWS.d/next/IDLE/2018-06-26-22-53-14.bpo-33975.Ow7alv.rst

-Avoid small type when running htests. Since part of the purpose of
-human-viewed tests is to determine that widgets look right, it is important
-that they look the same for testing as when running IDLE.

Misc/NEWS.d/next/IDLE/2018-08-01-23-25-38.bpo-34120.HgsIz-.rst

-Fix unresponsiveness after closing certain windows and dialogs.
\ No newline at end of file

Misc/NEWS.d/next/IDLE/2018-08-02-22-16-42.bpo-34275.Iu0d7t.rst

-Make IDLE calltips always visible on Mac. Some MacOS-tk combinations need
-.update_idletasks(). Patch by Kevin Walzer.

Misc/NEWS.d/next/IDLE/2018-08-05-15-49-55.bpo-34047.LGKsIm.rst

-Fixed mousewheel scrolling direction on macOS.

Misc/NEWS.d/next/IDLE/2018-08-13-16-31-24.bpo-1529353.wXfQJk.rst

-Enable "squeezing" of long outputs in the shell, to avoid performance
-degradation and to clean up the history without losing it.  Squeezed outputs
-may be copied, viewed in a separate window, and "unsqueezed".

Misc/NEWS.d/next/IDLE/2018-09-22-20-25-07.bpo-34548.7pBzjg.rst

-Use configured color theme for read-only text views.

Misc/NEWS.d/next/IDLE/2018-10-28-00-08-42.bpo-35087.G7gx2-.rst

-Update idlelib help files for the current doc build. The main change is the
-elimination of chapter-section numbers.

Misc/NEWS.d/next/IDLE/2018-10-28-00-54-32.bpo-35088.r1lJZd.rst

-Update idlelib.help.copy_string docstring. We now use git and backporting
-instead of hg and forward merging.

Misc/NEWS.d/next/IDLE/2018-10-28-15-53-51.bpo-35093.cH-tli.rst

-Document the IDLE document viewer in the IDLE doc. Add a paragraph in "Help
-and preferences", "Help sources" subsection.

Misc/NEWS.d/next/IDLE/2018-10-28-20-17-14.bpo-35097.07tm66.rst

-Add IDLE doc subsection explaining editor windows. Topics include opening,
-title and status bar, .py* extension, and running.

Misc/NEWS.d/next/IDLE/2018-11-05-20-43-08.bpo-35099.SVOZXC.rst

-Improve the doc about IDLE running user code.   The section is renamed from
-"IDLE -- console differences" is renamed "Running user code".
-It mostly covers the implications of using custom sys.stdxxx objects.

Misc/NEWS.d/next/IDLE/2018-11-05-23-23-00.bpo-23220.H3SAWE.rst

-Explain how IDLE's Shell displays output.

Misc/NEWS.d/next/IDLE/2018-11-06-23-10-54.bpo-33000.pQasCt.rst

-Document that IDLE's shell has no line limit. A program that runs
-indefinitely can overfill memory.

Misc/NEWS.d/next/IDLE/2018-11-10-09-10-54.bpo-35202.TeJJrt.rst

-Remove unused imports from lib/idlelib

Misc/NEWS.d/next/IDLE/2018-11-10-21-27-25.bpo-34864.Ci-G2q.rst

-Document two IDLE on MacOS issues. The System Preferences Dock "prefer tabs
-always" setting disables some IDLE features.  Menus are a bit different than
-as described for Windows and Linux.

Misc/NEWS.d/next/IDLE/2018-11-11-17-13-50.bpo-34864.cw0PvO.rst

-On macOS, warn if the system preference "Prefer tabs when opening documents"
-is set to "Always".
\ No newline at end of file

Misc/NEWS.d/next/IDLE/2018-11-12-00-20-01.bpo-35213.cqNgzT.rst

-Where appropriate, use 'macOS' in idlelib.

Misc/NEWS.d/next/IDLE/2018-12-18-13-56-31.bpo-22703.UlsjKQ.rst

-The Code Context menu label now toggles between Show/Hide Code Context.
-The Zoom Height menu now toggles between Zoom/Restore Height.
-Zoom Height has moved from the Window menu to the Options menu.

Misc/NEWS.d/next/IDLE/2018-12-20-00-14-15.bpo-35521.x32BRn.rst

-Document the IDLE editor code context feature. Add some internal references
-within the IDLE doc.

Misc/NEWS.d/next/IDLE/2018-12-23-17-42-11.bpo-35208.J5NOg7.rst

-Squeezer now properly counts wrapped lines before newlines.

Misc/NEWS.d/next/IDLE/2018-12-26-13-53-34.bpo-28097.95I9NT.rst

-Add Previous/Next History entries to Shell menu.

Misc/NEWS.d/next/IDLE/2018-12-27-15-29-11.bpo-35598.FWOOm8.rst

-Update config_key: use PEP 8 names and ttk widgets,
-make some objects global, and add tests.

Misc/NEWS.d/next/IDLE/2018-12-27-17-46-42.bpo-35196.9E-xUh.rst

-Speed up squeezer line counting.

Misc/NEWS.d/next/IDLE/2018-12-28-01-19-20.bpo-35591.SFpDj2.rst

-Find Selection now works when selection not found.

Misc/NEWS.d/next/IDLE/2018-12-28-17-16-33.bpo-34055.TmmpzR.rst

-Fix erroneous 'smart' indents and newlines in IDLE Shell.

Misc/NEWS.d/next/IDLE/2018-12-31-17-04-18.bpo-33987.fD92up.rst

-Use ttk Frame for ttk widgets.

Misc/NEWS.d/next/IDLE/2019-01-02-22-15-01.bpo-35641.QEaANl.rst

-Proper format `calltip` when the function has no docstring.

Misc/NEWS.d/next/IDLE/2019-01-04-19-14-29.bpo-35660.hMxI7N.rst

-Fix imports in idlelib.window.

Misc/NEWS.d/next/IDLE/2019-01-18-01-24-23.bpo-35769.GqsB34.rst

-Change IDLE's new file name from 'Untitled' to 'untitled'

Misc/NEWS.d/next/IDLE/2019-01-18-13-04-30.bpo-35770.2LxJGu.rst

-IDLE macosx deletes Options => Configure IDLE. It previously deleted Window
-=> Zoom Height by mistake. (Zoom Height is now on the Options menu).  On
-Mac, the settings dialog is accessed via Preferences on the IDLE menu.

Misc/NEWS.d/next/Library/2017-08-24-17-55-39.bpo-29456.XaB3MP.rst

-Fix bugs in hangul normalization: u1176, u11a7 and u11c3

Misc/NEWS.d/next/Library/2017-09-19-12-38-31.bpo-31508.pDsFJl.rst

-Removed support of arguments in `tkinter.ttk.Treeview.selection`. It was
-deprecated in 3.6.  Use specialized methods like `selection_set` for
-changing the selection.

Misc/NEWS.d/next/Library/2017-09-29-16-40-38.bpo-16865.l-f6I_.rst

-Support arrays >=2GiB in :mod:`ctypes`.  Patch by Segev Finer.

Misc/NEWS.d/next/Library/2017-10-05-20-41-48.bpo-27645.1Y_Wag.rst

-:class:`sqlite3.Connection` now exposes a :class:`~sqlite3.Connection.backup`
-method, if the underlying SQLite library is at version 3.6.11
-or higher.  Patch by Lele Gaifax.

Misc/NEWS.d/next/Library/2017-10-12-22-39-55.bpo-22005.lGP-sc.rst

-Implemented unpickling instances of :class:`~datetime.datetime`,
-:class:`~datetime.date` and :class:`~datetime.time` pickled by Python 2.
-``encoding='latin1'`` should be used for successful decoding.

Misc/NEWS.d/next/Library/2017-10-24-10-18-35.bpo-31425.1lgw47.rst

-Add support for sockets of the AF_QIPCRTR address family, supported by the
-Linux kernel. This is used to communicate with services, such as GPS or
-radio, running on Qualcomm devices. Patch by Bjorn Andersson.
\ No newline at end of file

Misc/NEWS.d/next/Library/2017-10-29-10-37-55.bpo-31608.wkp8Nw.rst

-Raise a ``TypeError`` instead of crashing if a ``collections.deque`` subclass
-returns a non-deque from ``__new__``. Patch by Oren Milman.

Misc/NEWS.d/next/Library/2017-10-31.bpo-31908.g4xh8x.rst

-Fix output of cover files for ``trace`` module command-line tool.
-Previously emitted cover files only when ``--missing`` option was used.
-Patch by Michael Selik.
\ No newline at end of file

Misc/NEWS.d/next/Library/2017-11-01-15-44-48.bpo-31680.yO6oSC.rst

-Added :data:`curses.ncurses_version`.

Misc/NEWS.d/next/Library/2017-11-27-15-09-49.bpo-30693.yC4mJ7.rst

-The ZipFile class now recurses directories in a reproducible way.

Misc/NEWS.d/next/Library/2017-11-27-15-09-49.bpo-30693.yC4mJ8.rst

-The TarFile class now recurses directories in a reproducible way.

Misc/NEWS.d/next/Library/2017-11-28-10-23-13.bpo-32147.PI2k1Y.rst

-:func:`binascii.unhexlify` is now up to 2 times faster.
-Patch by Sergey Fedoseev.

Misc/NEWS.d/next/Library/2017-12-06-10-10-10.bpo-32221.ideco_.rst

-Various functions returning tuple containing IPv6 addresses now omit ``%scope``
-part since the same information is already encoded in *scopeid* tuple item.
-Especially this speeds up :func:`socket.recvfrom` when it receives multicast
-packet since useless resolving of network interface name is omitted.

Misc/NEWS.d/next/Library/2017-12-16-11-40-52.bpo-29877.SfWhmz.rst

-compileall: import ProcessPoolExecutor only when needed, preventing hangs on
-low resource platforms

Misc/NEWS.d/next/Library/2017-12-27-21-55-19.bpo-31639.l3avDJ.rst

-http.server now exposes a ThreadingHTTPServer class and uses it when the
-module is run with ``-m`` to cope with web browsers pre-opening sockets.

Misc/NEWS.d/next/Library/2018-01-01-00-16-59.bpo-8525.Dq8s63.rst

-help() on a type now displays builtin subclasses. This is intended primarily
-to help with notification of more specific exception subclasses.
-
-Patch by Sanyam Khurana.

Misc/NEWS.d/next/Library/2018-01-07-17-43-10.bpo-32512.flC-dE.rst

-:mod:`profile` CLI accepts `-m module_name` as an alternative to
-script path.

Misc/NEWS.d/next/Library/2018-01-18-13-09-00.bpo-32585.qpeijr.rst

-Add Ttk spinbox widget to :mod:`tkinter.ttk`.  Patch by Alan D Moore.

Misc/NEWS.d/next/Library/2018-01-18-23-34-17.bpo-31848.M2cldy.rst

-Fix the error handling in Aifc_read.initfp() when the SSND chunk is not found.
-Patch by Zackery Spytz.

Misc/NEWS.d/next/Library/2018-01-20-23-17-25.bpo-24334.GZuQLv.rst

-Internal implementation details of ssl module were cleaned up. The SSLSocket
-has one less layer of indirection. Owner and session information are now
-handled by the SSLSocket and SSLObject constructor. Channel binding
-implementation has been simplified.

Misc/NEWS.d/next/Library/2018-01-21-15-01-50.bpo-31453.cZiZBe.rst

-Add TLSVersion constants and SSLContext.maximum_version / minimum_version
-attributes. The new API wraps OpenSSL 1.1
-https://www.openssl.org/docs/man1.1.0/ssl/SSL_CTX_set_min_proto_version.html
-feature.

Misc/NEWS.d/next/Library/2018-01-30-17-46-18.bpo-32727.aHVsRC.rst

-Do not include name field in SMTP envelope from address. Patch by Stéphane Wirtel

Misc/NEWS.d/next/Library/2018-02-01-01-34-47.bpo-32734.gCV9AD.rst

-Fixed ``asyncio.Lock()`` safety issue which allowed acquiring and locking
-the same lock multiple times, without it being free. Patch by Bar Harel.

Misc/NEWS.d/next/Library/2018-02-01-15-53-35.bpo-32691.VLWVTq.rst

-Use mod_spec.parent when running modules with pdb

Misc/NEWS.d/next/Library/2018-02-01-17-54-08.bpo-32741.KUvOPL.rst

-Implement ``asyncio.TimerHandle.when()`` method.

Misc/NEWS.d/next/Library/2018-02-02-17-21-24.bpo-32749.u5scIn.rst

-A :mod:`dbm.dumb` database opened with flags 'r' is now read-only.
-:func:`dbm.dumb.open` with flags 'r' and 'w' no longer creates a database if
-it does not exist.

Misc/NEWS.d/next/Library/2018-02-05-13-31-42.bpo-32647.ktmfR_.rst

-The ctypes module used to depend on indirect linking for dlopen. The shared
-extension is now explicitly linked against libdl on platforms with dl.

Misc/NEWS.d/next/Library/2018-02-05-21-28-28.bpo-32777.C-wIXF.rst

-Fix a rare but potential pre-exec child process deadlock in subprocess on
-POSIX systems when marking file descriptors inheritable on exec in the child
-process.  This bug appears to have been introduced in 3.4.

Misc/NEWS.d/next/Library/2018-02-06-17-58-15.bpo-32622.AE0Jz7.rst

-Implement native fast sendfile for Windows proactor event loop.

Misc/NEWS.d/next/Library/2018-02-07-19-12-10.bpo-32775.-T77_c.rst

-:func:`fnmatch.translate()` no longer produces patterns which contain set
-operations. Sets starting with '[' or containing '--', '&&', '~~' or '||'
-will be interpreted differently in regular expressions in future versions.
-Currently they emit warnings. fnmatch.translate() now avoids producing
-patterns containing such sets by accident.

Misc/NEWS.d/next/Library/2018-02-08-00-47-07.bpo-32792.NtyDb4.rst

-collections.ChainMap() preserves the order of the underlying mappings.

Misc/NEWS.d/next/Library/2018-02-08-18-59-11.bpo-30688.zBh4TH.rst

-Added support of ``\N{name}`` escapes in regular expressions.  Based on
-patch by Jonathan Eunice.

Misc/NEWS.d/next/Library/2018-02-09-14-44-43.bpo-30157.lEiiAK.rst

-Fixed guessing quote and delimiter in csv.Sniffer.sniff() when only the last
-field is quoted.  Patch by Jake Davis.

Misc/NEWS.d/next/Library/2018-02-09-21-41-56.bpo-31787.owSZ2t.rst

-Fixed refleaks of ``__init__()`` methods in various modules.
-(Contributed by Oren Milman)

Misc/NEWS.d/next/Library/2018-02-10-13-51-56.bpo-32394.dFM9SI.rst

-socket: Remove TCP_FASTOPEN,TCP_KEEPCNT,TCP_KEEPIDLE,TCP_KEEPINTVL flags on
-older version Windows during run-time.

Misc/NEWS.d/next/Library/2018-02-10-23-41-05.bpo-19675.-dj35-.rst

-``multiprocessing.Pool`` no longer leaks processes if its initialization fails.

Misc/NEWS.d/next/Library/2018-02-11-15-54-41.bpo-32819.ZTRX2Q.rst

-ssl.match_hostname() has been simplified and no longer depends on re and
-ipaddress module for wildcard and IP addresses. Error reporting for invalid
-wildcards has been improved.

Misc/NEWS.d/next/Library/2018-02-14-00-21-24.bpo-32841.bvHDOc.rst

-Fixed `asyncio.Condition` issue which silently ignored cancellation after
-notifying and cancelling a conditional lock. Patch by Bar Harel.

Misc/NEWS.d/next/Library/2018-02-15-08-18-52.bpo-31333.4fF-gM.rst

-``_abc`` module is added.  It is a speedup module with C implementations for
-various functions and methods in ``abc``.  Creating an ABC subclass and calling
-``isinstance`` or ``issubclass`` with an ABC subclass are up to 1.5x faster.
-In addition, this makes Python start-up up to 10% faster.
-
-Note that the new implementation hides internal registry and caches, previously
-accessible via private attributes ``_abc_registry``, ``_abc_cache``, and
-``_abc_negative_cache``.  There are three debugging helper methods that can be
-used instead ``_dump_registry``, ``_abc_registry_clear``, and
-``_abc_caches_clear``.

Misc/NEWS.d/next/Library/2018-02-15-12-04-29.bpo-32852.HDqIxM.rst

-Make sure sys.argv remains as a list when running trace.

Misc/NEWS.d/next/Library/2018-02-16-14-37-14.bpo-32857.-XljAx.rst

-In :mod:`tkinter`, ``after_cancel(None)`` now raises a :exc:`ValueError` instead of canceling the first scheduled function.  Patch by Cheryl Sabella.

Misc/NEWS.d/next/Library/2018-02-17-19-20-19.bpo-21060.S1Z-x6.rst

-Rewrite confusing message from setup.py upload from
-"No dist file created in earlier command" to the more helpful
-"Must create and upload files in one command".

Misc/NEWS.d/next/Library/2018-02-19-14-27-51.bpo-32556.CsRsgr.rst

-nt._getfinalpathname, nt._getvolumepathname and nt._getdiskusage now
-correctly convert from bytes.

Misc/NEWS.d/next/Library/2018-02-19-17-46-31.bpo-32859.kAT-Xp.rst

-In ``os.dup2``, don't check every call whether the ``dup3`` syscall exists
-or not.

Misc/NEWS.d/next/Library/2018-02-23-12-21-41.bpo-32759.M-y9GA.rst

-Free unused arenas in multiprocessing.heap.

Misc/NEWS.d/next/Library/2018-02-23-19-12-04.bpo-32922.u-xe0B.rst

-dbm.open() now encodes filename with the filesystem encoding rather than
-default encoding.

Misc/NEWS.d/next/Library/2018-02-24-21-40-42.bpo-30622.dQjxSe.rst

-The ssl module now detects missing NPN support in LibreSSL.

Misc/NEWS.d/next/Library/2018-02-25-10-17-23.bpo-32146.xOzUFW.rst

-Document the interaction between frozen executables and the spawn and
-forkserver start methods in multiprocessing.

Misc/NEWS.d/next/Library/2018-02-25-13-06-21.bpo-32947.mqStVW.rst

-Add OP_ENABLE_MIDDLEBOX_COMPAT and test workaround for TLSv1.3 for future
-compatibility with OpenSSL 1.1.1.

Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst

-Remove the tri-state parameter "hash", and add the boolean "unsafe_hash". If
-unsafe_hash is True, add a __hash__ function, but if a __hash__ exists,
-raise TypeError.  If unsafe_hash is False, add a __hash__ based on the
-values of eq= and frozen=.  The unsafe_hash=False behavior is the same as
-the old hash=None behavior.  unsafe_hash=False is the default, just as
-hash=None used to be.

Misc/NEWS.d/next/Library/2018-02-25-18-22-01.bpo-32951.gHrCXq.rst

-Direct instantiation of SSLSocket and SSLObject objects is now prohibited.
-The constructors were never documented, tested, or designed as public
-constructors. Users were suppose to use ssl.wrap_socket() or SSLContext.

Misc/NEWS.d/next/Library/2018-02-26-09-08-07.bpo-32257.6ElnUt.rst

-The ssl module now contains OP_NO_RENEGOTIATION constant, available with
-OpenSSL 1.1.0h or 1.1.1.

Misc/NEWS.d/next/Library/2018-02-26-13-16-36.bpo-32713.55yegW.rst

-Fixed tarfile.itn handling of out-of-bounds float values. Patch by Joffrey Fuhrer.

Misc/NEWS.d/next/Library/2018-02-26-20-04-40.bpo-32960.48r0Ml.rst

-For dataclasses, disallow inheriting frozen from non-frozen classes, and
-also disallow inheriting non-frozen from frozen classes. This restriction
-will be relaxed at a future date.

Misc/NEWS.d/next/Library/2018-02-28-13-08-00.bpo-32844.u8tnAe.rst

-Fix wrong redirection of a low descriptor (0 or 1) to stderr in subprocess
-if another low descriptor is closed.

Misc/NEWS.d/next/Library/2018-02-28-18-39-48.bpo-32970.IPWtbS.rst

-Improved disassembly of the MAKE_FUNCTION instruction.

Misc/NEWS.d/next/Library/2018-03-01-17-49-56.bpo-32056.IlpfgE.rst

-Improved exceptions raised for invalid number of channels and sample width
-when read an audio file in modules :mod:`aifc`, :mod:`wave` and
-:mod:`sunau`.

Misc/NEWS.d/next/Library/2018-03-06-00-19-41.bpo-32969.rGTKa0.rst

-Expose several missing constants in zlib and fix corresponding
-documentation.

Misc/NEWS.d/next/Library/2018-03-06-11-54-59.bpo-33009.-Ekysb.rst

-Fix inspect.signature() for single-parameter partialmethods.

Misc/NEWS.d/next/Library/2018-03-06-20-30-20.bpo-32999.lgFXWl.rst

-Fix C implementation of ``ABC.__subclasscheck__(cls, subclass)`` crashed when
-``subclass`` is not a type object.

Misc/NEWS.d/next/Library/2018-03-07-19-37-00.bpo-22674.2sIMmM.rst

-Add the strsignal() function in the signal module that returns the system
-description of the given signal, as returned by strsignal(3).

Misc/NEWS.d/next/Library/2018-03-07-22-28-17.bpo-27683.572Rv4.rst

-Fix a regression in :mod:`ipaddress` that result of :meth:`hosts`
-is empty when the network is constructed by a tuple containing an
-integer mask and only 1 bit left for addresses.

Misc/NEWS.d/next/Library/2018-03-09-23-07-07.bpo-33037.nAJ3at.rst

-Skip sending/receiving data after SSL transport closing.

Misc/NEWS.d/next/Library/2018-03-11-00-20-26.bpo-30249.KSkgLB.rst

-Improve struct.unpack_from() exception messages for problems with the buffer
-size and offset.

Misc/NEWS.d/next/Library/2018-03-11-08-44-12.bpo-33034.bpb23d.rst

-Providing an explicit error message when casting the port property to anything 
-that is not an integer value using ``urlparse()`` and ``urlsplit()``.
-Patch by Matt Eaton.

Misc/NEWS.d/next/Library/2018-03-11-19-03-52.bpo-31804.i8KUMp.rst

-Avoid failing in multiprocessing.Process if the standard streams are closed
-or None at exit.

Misc/NEWS.d/next/Library/2018-03-12-00-27-56.bpo-33021.m19B9T.rst

-Release the GIL during fstat() calls, avoiding hang of all threads when
-calling mmap.mmap(), os.urandom(), and random.seed().  Patch by Nir Soffer.

Misc/NEWS.d/next/Library/2018-03-12-16-40-00.bpo-33056.lNN9Eh.rst

-FIX properly close leaking fds in concurrent.futures.ProcessPoolExecutor.

Misc/NEWS.d/next/Library/2018-03-12-19-58-25.bpo-33064.LO2KIY.rst

-lib2to3 now properly supports trailing commas after ``*args`` and
-``**kwargs`` in function signatures.

Misc/NEWS.d/next/Library/2018-03-15-07-38-00.bpo-33078.RmjUF5.rst

-Fix the size handling in multiprocessing.Queue when a pickling error
-occurs.

Misc/NEWS.d/next/Library/2018-03-16-16-07-33.bpo-33061.TRTTek.rst

-Add missing ``NoReturn`` to ``__all__`` in typing.py

Misc/NEWS.d/next/Library/2018-03-18-15-57-32.bpo-32968.E4G7BO.rst

-Modulo and floor division involving Fraction and float should return float.

Misc/NEWS.d/next/Library/2018-03-18-16-48-23.bpo-33097.Yl4gI2.rst

-Raise RuntimeError when ``executor.submit`` is called during interpreter
-shutdown.

Misc/NEWS.d/next/Library/2018-03-18-17-38-48.bpo-32953.t8WAWN.rst

-If a non-dataclass inherits from a frozen dataclass, allow attributes to be
-added to the derived class.  Only attributes from the frozen dataclass
-cannot be assigned to.  Require all dataclasses in a hierarchy to be either
-all frozen or all non-frozen.

Misc/NEWS.d/next/Library/2018-03-19-20-47-00.bpo-33100.chyIO4.rst

-Dataclasses: If a field has a default value that's a MemberDescriptorType,
-then it's from that field being in __slots__, not an actual default value.

Misc/NEWS.d/next/Library/2018-03-20-20-53-21.bpo-32896.ewW3Ln.rst

-Fix an error where subclassing a dataclass with a field that uses a
-default_factory would generate an incorrect class.

Misc/NEWS.d/next/Library/2018-03-21-16-52-26.bpo-33116.Tvzerj.rst

-Add 'Field' to dataclasses.__all__.

Misc/NEWS.d/next/Library/2018-03-21-17-59-39.bpo-33078.PQOniT.rst

-Fix the failure on OSX caused by the tests relying on sem_getvalue

Misc/NEWS.d/next/Library/2018-03-22-16-05-56.bpo-32505.YK1N8v.rst

-Raise TypeError if a member variable of a dataclass is of type Field, but
-doesn't have a type annotation.

Misc/NEWS.d/next/Library/2018-03-24-15-08-24.bpo-33127.olJmHv.rst

-The ssl module now compiles with LibreSSL 2.7.1.

Misc/NEWS.d/next/Library/2018-03-24-19-34-26.bpo-33134.hbVeIX.rst

-When computing dataclass's __hash__, use the lookup table to contain the
-function which returns the __hash__ value.  This is an improvement over
-looking up a string, and then testing that string to see what to do.

Misc/NEWS.d/next/Library/2018-03-24-19-54-48.bpo-32873.cHyoAm.rst

-Treat type variables and special typing forms as immutable by copy and
-pickle.  This fixes several minor issues and inconsistencies, and improves
-backwards compatibility with Python 3.6.

Misc/NEWS.d/next/Library/2018-03-25-13-18-16.bpo-33096.ofdbe7.rst

-Allow ttk.Treeview.insert to insert iid that has a false boolean value.
-Note iid=0 and iid=False would be same.
-Patch by Garvit Khatri.
-

Misc/NEWS.d/next/Library/2018-03-26-12-33-13.bpo-33141.23wlxf.rst

-Have Field objects pass through __set_name__ to their default values, if
-they have their own __set_name__.

Misc/NEWS.d/next/Library/2018-03-29-03-09-22.bpo-32380.NhuGig.rst

-Create functools.singledispatchmethod to support generic single dispatch on
-descriptors and methods.

Misc/NEWS.d/next/Library/2018-03-29-04-32-25.bpo-33175._zs1yM.rst

-In dataclasses, Field.__set_name__ now looks up the __set_name__ special
-method on the class, not the instance, of the default value.

Misc/NEWS.d/next/Library/2018-03-30-01-20-35.bpo-33106.zncfvW.rst

-Deleting a key from a read-only dbm database raises module specfic error
-instead of KeyError.

Misc/NEWS.d/next/Library/2018-04-01-19-21-04.bpo-20104.-AKcGa.rst

-Improved error handling and fixed a reference leak in :func:`os.posix_spawn()`.

Misc/NEWS.d/next/Library/2018-04-02-16-10-12.bpo-23403.KG7ADV.rst

-``DEFAULT_PROTOCOL`` in :mod:`pickle` was bumped to 4. Protocol 4 is
-described in :pep:`3154` and available since Python 3.4. It offers
-better performance and smaller size compared to protocol 3 introduced
-in Python 3.0.

Misc/NEWS.d/next/Library/2018-04-02-20-44-54.bpo-32861.HeBjzN.rst

-The urllib.robotparser's ``__str__`` representation now includes wildcard
-entries and the "Crawl-delay" and "Request-rate" fields. Also removes extra
-newlines that were being appended to the end of the string. Patch by
-Michael Lazar.

Misc/NEWS.d/next/Library/2018-04-03-10-37-13.bpo-33209.9sGWE_.rst

-End framing at the end of C implementation of :func:`pickle.Pickler.dump`.

Misc/NEWS.d/next/Library/2018-04-04-23-41-30.bpo-33224.pyR0jB.rst

-Update difflib.mdiff() for :pep:`479`.  Convert an uncaught StopIteration in a
-generator into a return-statement.

Misc/NEWS.d/next/Library/2018-04-05-11-09-45.bpo-33203.Hje9Py.rst

-``random.Random.choice()`` now raises ``IndexError`` for empty sequences
-consistently even when called from subclasses without a ``getrandbits()``
-implementation.

Misc/NEWS.d/next/Library/2018-04-06-14-56-26.bpo-33169.ByhDqb.rst

-Delete entries of ``None`` in :data:`sys.path_importer_cache` when
-:meth:`importlib.machinery.invalidate_caches` is called.

Misc/NEWS.d/next/Library/2018-04-07-13-49-39.bpo-29613.r6FDnB.rst

-Added support for the ``SameSite`` cookie flag to the ``http.cookies``
-module.

Misc/NEWS.d/next/Library/2018-04-08-22-54-07.bpo-33185.Id-Ba9.rst

-Fixed regression when running pydoc with the :option:`-m` switch. (The regression
-was introduced in 3.7.0b3 by the resolution of :issue:`33053`)
-
-This fix also changed pydoc to add ``os.getcwd()`` to :data:`sys.path` when
-necessary, rather than adding ``"."``.

Misc/NEWS.d/next/Library/2018-04-10-14-50-30.bpo-33144.iZr4et.rst

-``random.Random()`` and its subclassing mechanism got optimized to check only
-once at class/subclass instantiation time whether its ``getrandbits()`` method
-can be relied on by other methods, including ``randrange()``, for the
-generation of arbitrarily large random integers.  Patch by Wolfgang Maier.

Misc/NEWS.d/next/Library/2018-04-10-20-57-14.bpo-33256.ndHkqu.rst

-Fix display of ``<module>`` call in the html produced by ``cgitb.html()``. Patch by Stéphane Blondon.

Misc/NEWS.d/next/Library/2018-04-11-20-29-19.bpo-33263.B56Hc1.rst

-Fix FD leak in `_SelectorSocketTransport`  Patch by Vlad Starostin.

Misc/NEWS.d/next/Library/2018-04-13-08-12-50.bpo-33265.KPQRk0.rst

-``contextlib.ExitStack`` and ``contextlib.AsyncExitStack`` now use a method
-instead of a wrapper function for exit callbacks.

Misc/NEWS.d/next/Library/2018-04-13-15-14-47.bpo-33254.DS4KFK.rst

-Have :func:`importlib.resources.contents` and
-:meth:`importlib.abc.ResourceReader.contents` return an :term:`iterable` instead
-of an :term:`iterator`.

Misc/NEWS.d/next/Library/2018-04-16-08-42-03.bpo-11594.QLo4vv.rst

-Ensure line-endings are respected when using lib2to3.

Misc/NEWS.d/next/Library/2018-04-16-15-59-21.bpo-33266.w2PAm-.rst

-lib2to3 now recognizes ``rf'...'`` strings.

Misc/NEWS.d/next/Library/2018-04-16-16-21-09.bpo-23403.rxR1Q_.rst

-lib2to3 now uses pickle protocol 4 for pre-computed grammars.

Misc/NEWS.d/next/Library/2018-04-18-19-12-25.bpo-33308.fW75xi.rst

-Fixed a crash in the :mod:`parser` module when converting an ST object to a
-tree of tuples or lists with ``line_info=False`` and ``col_info=True``.

Misc/NEWS.d/next/Library/2018-04-20-10-43-17.bpo-33131.L2E977.rst

-Upgrade bundled version of pip to 10.0.1.

Misc/NEWS.d/next/Library/2018-04-21-00-24-08.bpo-991266.h93TP_.rst

-Fix quoting of the ``Comment`` attribute of :class:`http.cookies.SimpleCookie`.

Misc/NEWS.d/next/Library/2018-04-22-20-13-21.bpo-33334.19UMOC.rst

-:func:`dis.stack_effect` now supports all defined opcodes including NOP and
-EXTENDED_ARG.

Misc/NEWS.d/next/Library/2018-04-23-13-21-39.bpo-33329.lQ-Eod.rst

-Fix multiprocessing regression on newer glibcs

Misc/NEWS.d/next/Library/2018-04-23-18-25-36.bpo-33251.C_K-J9.rst

-`ConfigParser.items()` was fixed so that key-value pairs passed in via `vars`
-are not included in the resulting output.

Misc/NEWS.d/next/Library/2018-04-23-21-41-30.bpo-33332.Y6OZ8Z.rst

-Add ``signal.valid_signals()`` to expose the POSIX sigfillset()
-functionality.

Misc/NEWS.d/next/Library/2018-04-25-14-05-21.bpo-27485.nclVSU.rst

-Rename and deprecate undocumented functions in :func:`urllib.parse`.

Misc/NEWS.d/next/Library/2018-04-26-13-31-10.bpo-32455.KPWg3K.rst

-Added *jump* parameter to :func:`dis.stack_effect`.

Misc/NEWS.d/next/Library/2018-04-27-22-18-38.bpo-33336.T8rxn0.rst

-``imaplib`` now allows ``MOVE`` command in ``IMAP4.uid()`` (RFC 
-6851: IMAP MOVE Extension) and potentially as a name of supported 
-method of ``IMAP4`` object.

Misc/NEWS.d/next/Library/2018-04-28-08-11-35.bpo-33375.Dbq1fz.rst

-The warnings module now finds the Python file associated with a warning from
-the code object, rather than the frame's global namespace. This is
-consistent with how tracebacks and pdb find filenames, and should work
-better for dynamically executed code.

Misc/NEWS.d/next/Library/2018-04-29-11-15-38.bpo-33383.g32YWn.rst

-Fixed crash in the get() method of the :mod:`dbm.ndbm` database object when
-it is called with a single argument.

Misc/NEWS.d/next/Library/2018-04-29-23-56-20.bpo-33197.dgRLqr.rst

-Update error message when constructing invalid inspect.Parameters
-Patch by Dong-hee Na.

Misc/NEWS.d/next/Library/2018-04-30-13-29-47.bpo-33217.TENDzd.rst

-Raise :exc:`TypeError` when looking up non-Enum objects in Enum classes and
-Enum members.

Misc/NEWS.d/next/Library/2018-04-30-22-43-31.bpo-32933.M3iI_y.rst

-:func:`unittest.mock.mock_open` now supports iteration over the file
-contents. Patch by Tony Flury.

Misc/NEWS.d/next/Library/2018-05-01-02-24-44.bpo-27300.LdIXvK.rst

-The file classes in *tempfile* now accept an *errors* parameter that
-complements the already existing *encoding*.  Patch by Stephan Hohe.

Misc/NEWS.d/next/Library/2018-05-01-22-33-14.bpo-33311.8YPB-k.rst

-Text and html output generated by cgitb does not display parentheses if the
-current call is done directly in the module. Patch by Stéphane Blondon.

Misc/NEWS.d/next/Library/2018-05-01-22-35-50.bpo-33281.d4jOt4.rst

-Fix ctypes.util.find_library regression on macOS.

Misc/NEWS.d/next/Library/2018-05-02-07-26-29.bpo-28167.7FwDfN.rst

-The function ``platform.linux_distribution`` and ``platform.dist`` now
-trigger a ``DeprecationWarning`` and have been marked for removal in Python
-3.8

Misc/NEWS.d/next/Library/2018-05-05-09-53-05.bpo-33422.4FtQ0q.rst

-Fix trailing quotation marks getting deleted when looking up byte/string
-literals on pydoc. Patch by Andrés Delfino.

Misc/NEWS.d/next/Library/2018-05-05-18-02-24.bpo-20087.lJrvXL.rst

-Updated alias mapping with glibc 2.27 supported locales.

Misc/NEWS.d/next/Library/2018-05-08-15-01-10.bpo-33365.SicsAd.rst

-Print the header values besides the header keys instead just the header keys if *debuglevel* is set to >0 in :mod:`http.client`. Patch by Marco Strigl.

Misc/NEWS.d/next/Library/2018-05-08-16-43-42.bpo-28556._xr5mp.rst

-Minor fixes in typing module: add annotations to ``NamedTuple.__new__``,
-pass ``*args`` and ``**kwds`` in ``Generic.__new__``.  Original PRs by
-Paulius Šarka and Chad Dombrova.

Misc/NEWS.d/next/Library/2018-05-12-06-01-02.bpo-33453.Fj-jMD.rst

-Fix dataclasses to work if using literal string type annotations or if using
-PEP 563 "Postponed Evaluation of Annotations".  Only specific string
-prefixes are detected for both ClassVar ("ClassVar" and "typing.ClassVar")
-and InitVar ("InitVar" and "dataclasses.InitVar").

Misc/NEWS.d/next/Library/2018-05-12-13-06-41.bpo-29209.h5RxYy.rst

-Removed the ``doctype()`` method and the *html* parameter of the constructor
-of :class:`~xml.etree.ElementTree.XMLParser`.  The ``doctype()`` method
-defined in a subclass will no longer be called.  Deprecated methods
-``getchildren()`` and ``getiterator()`` in the :mod:`~xml.etree.ElementTree`
-module emit now a :exc:`DeprecationWarning` instead of
-:exc:`PendingDeprecationWarning`.

Misc/NEWS.d/next/Library/2018-05-14-09-07-14.bpo-26103._zU8E2.rst

-Correct ``inspect.isdatadescriptor`` to look for ``__set__`` or
-``__delete__``.  Patch by Aaron Hall.

Misc/NEWS.d/next/Library/2018-05-14-10-29-03.bpo-33495.TeGTQJ.rst

-Change dataclasses.Fields repr to use the repr of each of its members,
-instead of str.  This makes it more clear what each field actually
-represents.  This is especially true for the 'type' member.

Misc/NEWS.d/next/Library/2018-05-14-15-01-55.bpo-29235.47Fzwt.rst

-The :class:`cProfile.Profile` class can now be used as a context manager. Patch
-by Scott Sanderson.

Misc/NEWS.d/next/Library/2018-05-14-17-49-34.bpo-33497.wWT6XM.rst

-Add errors param to cgi.parse_multipart and make an encoding in FieldStorage
-use the given errors (needed for Twisted).  Patch by Amber Brown.

Misc/NEWS.d/next/Library/2018-05-14-18-05-35.bpo-33505.L8pAyt.rst

-Optimize asyncio.ensure_future() by reordering if checks: 1.17x faster.

Misc/NEWS.d/next/Library/2018-05-15-12-11-13.bpo-33504.czsHFg.rst

-Switch the default dictionary implementation for :mod:`configparser` from
-:class:`collections.OrderedDict` to the standard :class:`dict` type.

Misc/NEWS.d/next/Library/2018-05-15-13-49-13.bpo-28167.p4RdQt.rst

-Remove platform.linux_distribution, which was deprecated since 3.5.

Misc/NEWS.d/next/Library/2018-05-15-15-03-48.bpo-28612.E9dz39.rst

-Added support for Site Maps to urllib's ``RobotFileParser`` as
-:meth:`RobotFileParser.site_maps() <urllib.robotparser.RobotFileParser.site_maps>`.
-Patch by Lady Red, based on patch by Peter Wirtz.

Misc/NEWS.d/next/Library/2018-05-15-17-06-42.bpo-33516.ZzARe4.rst

-:class:`unittest.mock.MagicMock` now supports the ``__round__`` magic method.

Misc/NEWS.d/next/Library/2018-05-15-18-02-03.bpo-0.pj2Mbb.rst

-Fix failure in `typing.get_type_hints()` when ClassVar was provided as a string forward reference.

Misc/NEWS.d/next/Library/2018-05-16-05-24-43.bpo-26819.taxbVT.rst

-Fix race condition with `ReadTransport.resume_reading` in Windows proactor
-event loop.

Misc/NEWS.d/next/Library/2018-05-16-09-30-27.bpo-33542.idNAcs.rst

-Prevent ``uuid.get_node`` from using a DUID instead of a MAC on Windows.
-Patch by Zvi Effron

Misc/NEWS.d/next/Library/2018-05-16-10-07-40.bpo-33536._s0TE8.rst

-dataclasses.make_dataclass now checks for invalid field names and duplicate
-fields. Also, added a check for invalid field specifications.

Misc/NEWS.d/next/Library/2018-05-16-12-32-48.bpo-33541.kQORPE.rst

-Remove unused private method ``_strptime.LocaleTime.__pad`` (a.k.a.
-``_LocaleTime__pad``).

Misc/NEWS.d/next/Library/2018-05-16-14-57-58.bpo-33109.nPLL_S.rst

-argparse subparsers are once again not required by default, reverting the
-change in behavior introduced by bpo-26510 in 3.7.0a2.

Misc/NEWS.d/next/Library/2018-05-16-17-05-48.bpo-33548.xWslmx.rst

-tempfile._candidate_tempdir_list should consider common TEMP locations

Misc/NEWS.d/next/Library/2018-05-16-18-10-38.bpo-33540.wy9LRV.rst

-Add a new ``block_on_close`` class attribute to ``ForkingMixIn`` and
-``ThreadingMixIn`` classes of :mod:`socketserver`.

Misc/NEWS.d/next/Library/2018-05-17-22-14-58.bpo-12486.HBeh62.rst

-:func:`tokenize.generate_tokens` is now documented as a public API to
-tokenize unicode strings. It was previously present but undocumented.

Misc/NEWS.d/next/Library/2018-05-17-22-53-08.bpo-28556.C6Hnd1.rst

-Do not simplify arguments to `typing.Union`. Now `Union[Manager, Employee]`
-is not simplified to `Employee` at runtime. Such simplification previously
-caused several bugs and limited possibilities for introspection.

Misc/NEWS.d/next/Library/2018-05-18-21-50-47.bpo-33570.7CZy4t.rst

-Change TLS 1.3 cipher suite settings for compatibility with OpenSSL
-1.1.1-pre6 and newer. OpenSSL 1.1.1 will have TLS 1.3 ciphers enabled by
-default.

Misc/NEWS.d/next/Library/2018-05-18-22-52-34.bpo-21145.AiQMDx.rst

-Add ``functools.cached_property`` decorator, for computed properties cached
-for the life of the instance.

Misc/NEWS.d/next/Library/2018-05-19-15-58-14.bpo-33582.qBZPmF.rst

-Emit a deprecation warning for inspect.formatargspec

Misc/NEWS.d/next/Library/2018-05-22-11-55-33.bpo-33604.6V4JcO.rst

-Remove HMAC default to md5 marked for removal in 3.8 (removal originally
-planned in 3.6, bump to 3.8 in gh-7062).

Misc/NEWS.d/next/Library/2018-05-22-13-05-12.bpo-30877.JZEGjI.rst

-Fixed a bug in the Python implementation of the JSON decoder that prevented
-the cache of parsed strings from clearing after finishing the decoding.
-Based on patch by c-fos.

Misc/NEWS.d/next/Library/2018-05-23-00-26-27.bpo-11874.glK5iP.rst

-Use a better regex when breaking usage into wrappable parts. Avoids bogus
-assertion errors from custom metavar strings.

Misc/NEWS.d/next/Library/2018-05-23-14-58-05.bpo-33623.wAw1cF.rst

-Fix possible SIGSGV when asyncio.Future is created in __del__

Misc/NEWS.d/next/Library/2018-05-23-17-07-54.bpo-33625.nzQgD8.rst

-Release GIL on `grp.getgrnam`, `grp.getgrgid`, `pwd.getpwnam` and
-`pwd.getpwuid` if reentrant variants of these functions are available.
-Patch by William Grzybowski.

Misc/NEWS.d/next/Library/2018-05-23-20-14-34.bpo-33618.xU39lr.rst

-Finalize and document preliminary and experimental TLS 1.3 support with
-OpenSSL 1.1.1

Misc/NEWS.d/next/Library/2018-05-24-09-15-52.bpo-33238.ooDfoo.rst

-Add ``InvalidStateError`` to :mod:`concurrent.futures`.
-``Future.set_result`` and ``Future.set_exception`` now raise
-``InvalidStateError`` if the futures are not pending or running. Patch by
-Jason Haydaman.

Misc/NEWS.d/next/Library/2018-05-24-17-41-36.bpo-32493.5tAoAu.rst

-Fixed :func:`uuid.uuid1` on FreeBSD.

Misc/NEWS.d/next/Library/2018-05-26-10-13-59.bpo-33652.humFJ1.rst

-Pickles of type variables and subscripted generics are now future-proof and
-compatible with older Python versions.

Misc/NEWS.d/next/Library/2018-05-26-13-09-34.bpo-33654.IbYWxA.rst

-Fix transport.set_protocol() to support switching between asyncio.Protocol
-and asyncio.BufferedProtocol.  Fix loop.start_tls() to work with
-asyncio.BufferedProtocols.

Misc/NEWS.d/next/Library/2018-05-28-12-29-54.bpo-33672.GM_Xm_.rst

-Fix Task.__repr__ crash with Cython's bogus coroutines

Misc/NEWS.d/next/Library/2018-05-28-15-55-12.bpo-33469.hmXBpY.rst

-Fix RuntimeError after closing loop that used run_in_executor

Misc/NEWS.d/next/Library/2018-05-28-16-19-35.bpo-32410.Z1DZaF.rst

-Avoid blocking on file IO in sendfile fallback code

Misc/NEWS.d/next/Library/2018-05-28-16-40-32.bpo-32610.KvUAsL.rst

-Make asyncio.all_tasks() return only pending tasks.

Misc/NEWS.d/next/Library/2018-05-28-18-40-26.bpo-31647.s4Fad3.rst

-Fixed bug where calling write_eof() on a _SelectorSocketTransport after it's
-already closed raises AttributeError.

Misc/NEWS.d/next/Library/2018-05-28-22-49-59.bpo-33674.6LFFj7.rst

-Fix a race condition in SSLProtocol.connection_made() of asyncio.sslproto:
-start immediately the handshake instead of using call_soon(). Previously,
-data_received() could be called before the handshake started, causing the
-handshake to hang or fail.

Misc/NEWS.d/next/Library/2018-05-28-23-25-17.bpo-33671.GIdKKi.rst

-:func:`shutil.copyfile`, :func:`shutil.copy`, :func:`shutil.copy2`,
-:func:`shutil.copytree` and :func:`shutil.move` use platform-specific
-fast-copy syscalls on Linux, Solaris and macOS in order to copy the file
-more efficiently.
-On Windows :func:`shutil.copyfile` uses a bigger default buffer size (1 MiB
-instead of 16 KiB) and a :func:`memoryview`-based variant of
-:func:`shutil.copyfileobj` is used.
-The speedup for copying a 512MiB file is about +26% on Linux, +50% on macOS and
-+40% on Windows. Also, much less CPU cycles are consumed.
-(Contributed by Giampaolo Rodola' in :issue:`25427`.)

Misc/NEWS.d/next/Library/2018-05-29-00-37-56.bpo-33674.2IkGhL.rst

-Pause the transport as early as possible to further reduce the risk of
-data_received() being called before connection_made().

Misc/NEWS.d/next/Library/2018-05-29-01-13-39.bpo-33654.sa81Si.rst

-Support protocol type switching in SSLTransport.set_protocol().

Misc/NEWS.d/next/Library/2018-05-29-12-51-18.bpo-32684.ZEIism.rst

-Fix gather to propagate cancellation of itself even with return_exceptions.

Misc/NEWS.d/next/Library/2018-05-29-15-32-18.bpo-32751.oBTqr7.rst

-When cancelling the task due to a timeout, :meth:`asyncio.wait_for` will now
-wait until the cancellation is complete.

Misc/NEWS.d/next/Library/2018-05-30-00-26-05.bpo-33197.XkE2kL.rst

-Add description property for _ParameterKind

Misc/NEWS.d/next/Library/2018-05-30-16-00-06.bpo-2504.BynUvU.rst

-Add gettext.pgettext() and variants.

Misc/NEWS.d/next/Library/2018-05-31-06-48-55.bpo-31014.SNY681.rst

-Fixed creating a controller for :mod:`webbrowser` when a user specifies a
-path to an entry in the BROWSER environment variable.  Based on patch by
-John Still.

Misc/NEWS.d/next/Library/2018-06-01-10-55-48.bpo-33734.x1W9x0.rst

-asyncio/ssl: Fix AttributeError, increase default handshake timeout

Misc/NEWS.d/next/Library/2018-06-03-22-41-59.bpo-33767.2e82g3.rst

-The concatenation (``+``) and repetition (``*``) sequence operations now
-raise :exc:`TypeError` instead of :exc:`SystemError` when performed on
-:class:`mmap.mmap` objects.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Library/2018-06-04-13-46-39.bpo-33769.D_pxYz.rst

-asyncio/start_tls: Fix error message; cancel callbacks in case of an
-unhandled error; mark SSLTransport as closed if it is aborted.

Misc/NEWS.d/next/Library/2018-06-05-11-29-26.bpo-33770.oBhxxw.rst

-improve base64 exception message for encoded inputs of invalid length

Misc/NEWS.d/next/Library/2018-06-05-12-43-25.bpo-33165.9TIsVf.rst

-Added a stacklevel parameter to logging calls to allow use of wrapper/helper
-functions for logging APIs.

Misc/NEWS.d/next/Library/2018-06-05-20-22-30.bpo-33778._tSAS6.rst

-Update ``unicodedata``'s database to Unicode version 11.0.0.

Misc/NEWS.d/next/Library/2018-06-06-22-01-33.bpo-33274.teYqv8.rst

-W3C DOM Level 1 specifies return value of Element.removeAttributeNode() as
-"The Attr node that was removed." xml.dom.minidom now complies with this
-requirement.

Misc/NEWS.d/next/Library/2018-06-07-12-38-12.bpo-33792.3aKG7u.rst

-Add asyncio.WindowsSelectorEventLoopPolicy and
-asyncio.WindowsProactorEventLoopPolicy.

Misc/NEWS.d/next/Library/2018-06-07-18-55-35.bpo-32493.1Bte62.rst

-Correct test for ``uuid_enc_be`` availability in ``configure.ac``.
-Patch by Michael Felt.
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-06-07-23-51-00.bpo-33694.F1zIR1.rst

-asyncio: Fix a race condition causing data loss on
-pause_reading()/resume_reading() when using the ProactorEventLoop.

Misc/NEWS.d/next/Library/2018-06-08-00-29-40.bpo-33476.R0Bhlj.rst

-Fix _header_value_parser.py when address group is missing final ';'.
-Contributed by Enrique Perez-Terron

Misc/NEWS.d/next/Library/2018-06-08-17-34-16.bpo-30805.3qCWa0.rst

-Avoid race condition with debug logging

Misc/NEWS.d/next/Library/2018-06-08-23-55-34.bpo-33578.7oSsjG.rst

-Implement multibyte encoder/decoder state methods

Misc/NEWS.d/next/Library/2018-06-10-09-43-54.bpo-27397.0_fFQR.rst

-Make email module properly handle invalid-length base64 strings.

Misc/NEWS.d/next/Library/2018-06-10-12-15-26.bpo-32108.iEkvh0.rst

-In configparser, don't clear section when it is assigned to itself.

Misc/NEWS.d/next/Library/2018-06-10-13-26-02.bpo-33812.frGAOr.rst

-Datetime instance d with non-None tzinfo, but with d.tzinfo.utcoffset(d)
-returning None is now treated as naive by the astimezone() method.

Misc/NEWS.d/next/Library/2018-06-10-14-08-52.bpo-33687.1zZdnA.rst

-Fix the call to ``os.chmod()`` for ``uu.decode()`` if a mode is given or
-decoded. Patch by Timo Furrer.

Misc/NEWS.d/next/Library/2018-06-10-15-14-17.bpo-33805.5LAz5a.rst

-Improve error message of dataclasses.replace() when an InitVar is not specified

Misc/NEWS.d/next/Library/2018-06-10-19-29-17.bpo-30167.G5EgC5.rst

-Prevent site.main() exception if PYTHONSTARTUP is set. Patch by Steve Weber.

Misc/NEWS.d/next/Library/2018-06-12-18-34-54.bpo-33842.RZXSGu.rst

-Remove ``tarfile.filemode`` which is deprecated since Python 3.3.

Misc/NEWS.d/next/Library/2018-06-12-18-59-16.bpo-33843.qVAK8g.rst

-Remove deprecated ``cgi.escape``, ``cgi.parse_qs`` and ``cgi.parse_qsl``.

Misc/NEWS.d/next/Library/2018-06-13-20-33-29.bpo-26544.hQ1oMt.rst

-Fixed implementation of :func:`platform.libc_ver`. It almost always returned
-version '2.9' for glibc.

Misc/NEWS.d/next/Library/2018-06-14-17-53-30.bpo-33721.8i9_9A.rst

-:mod:`os.path` functions that return a boolean result like
-:func:`~os.path.exists`, :func:`~os.path.lexists`, :func:`~os.path.isdir`,
-:func:`~os.path.isfile`, :func:`~os.path.islink`, and :func:`~os.path.ismount`,
-and :mod:`pathlib.Path` methods that return a boolean result like
-:meth:`~pathlib.Path.exists()`, :meth:`~pathlib.Path.is_dir()`,
-:meth:`~pathlib.Path.is_file()`, :meth:`~pathlib.Path.is_mount()`,
-:meth:`~pathlib.Path.is_symlink()`, :meth:`~pathlib.Path.is_block_device()`,
-:meth:`~pathlib.Path.is_char_device()`, :meth:`~pathlib.Path.is_fifo()`,
-:meth:`~pathlib.Path.is_socket()` now return ``False`` instead of raising
-:exc:`ValueError` or its subclasses :exc:`UnicodeEncodeError` and
-:exc:`UnicodeDecodeError` for paths that contain characters or bytes
-unrepresentable at the OS level.

Misc/NEWS.d/next/Library/2018-06-17-10-48-03.bpo-33663.sUuGmq.rst

-Convert content length to string before putting to header.

Misc/NEWS.d/next/Library/2018-06-17-11-46-20.bpo-33833.RnEqvM.rst

-Fixed bug in asyncio where ProactorSocketTransport logs AssertionError if
-force closed during write.

Misc/NEWS.d/next/Library/2018-06-21-09-33-02.bpo-32568.f_meGY.rst

-Make select.epoll() and its documentation consistent regarding *sizehint* and
-*flags*.

Misc/NEWS.d/next/Library/2018-06-21-11-35-47.bpo-33916.cZgPCD.rst

-bz2 and lzma: When Decompressor.__init__() is called twice, free the old
-lock to not leak memory.

Misc/NEWS.d/next/Library/2018-06-23-12-47-37.bpo-33695.seRTxh.rst

-:func:`shutil.copytree` uses :func:`os.scandir` function and all copy
-functions depending from it use cached :func:`os.stat` values. The speedup
-for copying a directory with 8000 files is around +9% on Linux, +20% on
-Windows and + 30% on a Windows SMB share. Also the number of :func:`os.stat`
-syscalls is reduced by 38% making :func:`shutil.copytree` especially faster
-on network filesystems.
-(Contributed by Giampaolo Rodola' in :issue:`33695`.)

Misc/NEWS.d/next/Library/2018-06-23-18-09-28.bpo-33897.Hu0yvt.rst

-Added a 'force' keyword argument to logging.basicConfig().

Misc/NEWS.d/next/Library/2018-06-24-01-57-14.bpo-33899.IaOcAr.rst

-Tokenize module now implicitly emits a NEWLINE when provided with input that
-does not have a trailing new line.  This behavior now matches what the C
-tokenizer does internally.  Contributed by Ammar Askar.

Misc/NEWS.d/next/Library/2018-06-26-02-09-18.bpo-33929.OcCLah.rst

-multiprocessing: Fix a race condition in Popen of
-multiprocessing.popen_spawn_win32. The child process now duplicates the read
-end of pipe instead of "stealing" it. Previously, the read end of pipe was
-"stolen" by the child process, but it leaked a handle if the child process had
-been terminated before it could steal the handle from the parent process.

Misc/NEWS.d/next/Library/2018-06-26-16-55-59.bpo-25007.6LQWOF.rst

-Add :func:`copy.copy` and :func:`copy.deepcopy` support to zlib compressors
-and decompressors.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Library/2018-06-26-19-03-56.bpo-33871.XhlrGU.rst

-Fixed integer overflow in :func:`os.readv`, :func:`os.writev`,
-:func:`os.preadv` and :func:`os.pwritev` and in :func:`os.sendfile` with
-*headers* or *trailers* arguments (on BSD-based OSes and macOS).

Misc/NEWS.d/next/Library/2018-06-27-00-31-30.bpo-24567.FuePyY.rst

-Improve random.choices() to handle subnormal input weights that could
-occasionally trigger an IndexError.

Misc/NEWS.d/next/Library/2018-06-28-13-00-12.bpo-27500._s1gZ5.rst

-Fix getaddrinfo to resolve IPv6 addresses correctly.

Misc/NEWS.d/next/Library/2018-06-28-14-56-44.bpo-33974.SA8nNP.rst

-Fixed passing lists and tuples of strings containing special characters
-``"``, ``\``, ``{``, ``}`` and ``\n`` as options to :mod:`~tkinter.ttk`
-widgets.

Misc/NEWS.d/next/Library/2018-06-29-00-31-36.bpo-14117.3nvDuR.rst

-Make minor tweaks to turtledemo. The 'wikipedia' example is now 'rosette',
-describing what it draws.  The 'penrose' print output is reduced. The'1024'
-output of 'tree' is eliminated.

Misc/NEWS.d/next/Library/2018-06-29-12-23-34.bpo-33978.y4csIw.rst

-Closed existing logging handlers before reconfiguration via fileConfig
-and dictConfig. Patch by Karthikeyan Singaravelan.

Misc/NEWS.d/next/Library/2018-06-29-13-05-01.bpo-34003.Iu831h.rst

-csv.DictReader now creates dicts instead of OrderedDicts. Patch by Michael
-Selik.

Misc/NEWS.d/next/Library/2018-07-02-05-59-11.bpo-34019.ZXJIife.rst

-webbrowser: Correct the arguments passed to Opera Browser when opening a new URL
-using the ``webbrowser`` module. Patch by Bumsik Kim.

Misc/NEWS.d/next/Library/2018-07-04-07-36-53.bpo-34010.VNDkde.rst

-Fixed a performance regression for reading streams with tarfile. The
-buffered read should use a list, instead of appending to a bytes object.

Misc/NEWS.d/next/Library/2018-07-04-17-14-26.bpo-34044.KWAu4y.rst

-``subprocess.Popen`` now copies the *startupinfo* argument to leave it
-unchanged: it will modify the copy, so that the same ``STARTUPINFO`` object can
-be used multiple times.

Misc/NEWS.d/next/Library/2018-07-04-21-14-35.bpo-34043.0YJNq9.rst

-Optimize tarfile uncompress performance about 15% when gzip is used.

Misc/NEWS.d/next/Library/2018-07-05-18-37-05.bpo-34054.nWRS6M.rst

-The multiprocessing module now uses the monotonic clock
-:func:`time.monotonic` instead of the system clock :func:`time.time` to
-implement timeout.

Misc/NEWS.d/next/Library/2018-07-05-22-45-46.bpo-34056.86isrU.rst

-Ensure the loader shim created by ``imp.load_module`` always returns bytes
-from its ``get_data()`` function. This fixes using ``imp.load_module`` with
-:pep:`552` hash-based pycs.

Misc/NEWS.d/next/Library/2018-07-06-15-06-32.bpo-34041.0zrKLh.rst

-Add the parameter *deterministic* to the
-:meth:`sqlite3.Connection.create_function` method. Patch by Sergey Fedoseev.

Misc/NEWS.d/next/Library/2018-07-08-18-49-41.bpo-33967.lhaAez.rst

-functools.singledispatch now raises TypeError instead of IndexError when no
-positional arguments are passed.

Misc/NEWS.d/next/Library/2018-07-11-10-03-21.bpo-27494.04OWkW.rst

-Reverted :issue:`27494`. 2to3 rejects now a trailing comma in generator
-expressions.

Misc/NEWS.d/next/Library/2018-07-11-20-51-20.bpo-34070.WpmFAu.rst

-Make sure to only check if the handle is a tty, when opening
-a file with ``buffering=-1``.

Misc/NEWS.d/next/Library/2018-07-13-08-44-52.bpo-34108.RjobUC.rst

-Remove extraneous CR in 2to3 refactor.

Misc/NEWS.d/next/Library/2018-07-13-13-42-10.bpo-34097.F5Dk5o.rst

-ZipFile can zip files older than 1980-01-01 and newer than 2107-12-31 using
-a new ``strict_timestamps`` parameter at the cost of setting the timestamp
-to the limit.

Misc/NEWS.d/next/Library/2018-07-20-09-11-05.bpo-33729.sO6iTb.rst

-Fixed issues with arguments parsing in :mod:`hashlib`.

Misc/NEWS.d/next/Library/2018-07-20-18-06-00.bpo-34164.fNfT-q.rst

-:func:`base64.b32decode` could raise UnboundLocalError or OverflowError for
-incorrect padding.  Now it always raises :exc:`base64.Error` in these cases.

Misc/NEWS.d/next/Library/2018-07-22-07-59-32.bpo-940286.NZTzyc.rst

-pydoc's ``Helper.showtopic()`` method now prints the cross references of a
-topic correctly.

Misc/NEWS.d/next/Library/2018-07-22-09-05-01.bpo-21446.w6g7tn.rst

-The :2to3fixer:`reload` fixer now uses :func:`importlib.reload` instead of
-deprecated :func:`imp.reload`.

Misc/NEWS.d/next/Library/2018-07-23-12-20-02.bpo-32788.R2jSiK.rst

-Errors other than :exc:`TypeError` raised in methods ``__adapt__()`` and
-``__conform__()`` in the :mod:`sqlite3` module are now propagated to the
-user.

Misc/NEWS.d/next/Library/2018-07-23-14-12-28.bpo-34197.7yFSP5.rst

-Attributes *skipinitialspace*, *doublequote* and *strict* of the *dialect*
-attribute of the :mod:`csv` reader are now :class:`bool` instances instead
-of integers 0 or 1.

Misc/NEWS.d/next/Library/2018-07-24-16-37-40.bpo-34052.VbbFAE.rst

-:meth:`sqlite3.Connection.create_aggregate`,
-:meth:`sqlite3.Connection.create_function`,
-:meth:`sqlite3.Connection.set_authorizer`,
-:meth:`sqlite3.Connection.set_progress_handler` methods raises TypeError
-when unhashable objects are passed as callable. These methods now don't pass
-such objects to SQLite API. Previous behavior could lead to segfaults. Patch
-by Sergey Fedoseev.

Misc/NEWS.d/next/Library/2018-07-25-00-40-14.bpo-34213.O15MgP.rst

-Allow frozen dataclasses to have a field named "object". Previously this conflicted with an internal use of "object".

Misc/NEWS.d/next/Library/2018-07-25-12-08-48.bpo-13041.lNmgDz.rst

-Use :func:`shutil.get_terminal_size` to calculate the terminal width
-correctly in the ``argparse.HelpFormatter`` class.  Initial patch by Zbyszek
-Jędrzejewski-Szmek.

Misc/NEWS.d/next/Library/2018-07-25-19-02-39.bpo-34228.0Ibztw.rst

-tracemalloc: PYTHONTRACEMALLOC=0 environment variable and -X tracemalloc=0
-command line option are now allowed to disable explicitly tracemalloc at
-startup.

Misc/NEWS.d/next/Library/2018-07-25-22-38-54.bpo-33089.C3CB7e.rst

-Enhanced math.hypot() to support more than two dimensions.

Misc/NEWS.d/next/Library/2018-07-26-08-45-49.bpo-19891.Y-3IiB.rst

-Ignore errors caused by missing / non-writable homedir while writing history
-during exit of an interactive session.  Patch by Anthony Sottile.

Misc/NEWS.d/next/Library/2018-07-28-11-47-10.bpo-34251.q3elQ6.rst

-Restore ``msilib.Win64`` to preserve backwards compatibility since it's
-already used by :mod:`distutils`' ``bdist_msi`` command.

Misc/NEWS.d/next/Library/2018-07-28-11-49-21.bpo-34075.9u1bO-.rst

-Deprecate passing non-ThreadPoolExecutor instances to
-:meth:`AbstractEventLoop.set_default_executor`.

Misc/NEWS.d/next/Library/2018-07-28-12-08-53.bpo-32215.EU68SY.rst

-Fix performance regression in :mod:`sqlite3` when a DML statement appeared
-in a different line than the rest of the SQL query.

Misc/NEWS.d/next/Library/2018-07-28-15-00-31.bpo-34035.75nW0H.rst

-Fix several AttributeError in zipfile seek() methods. Patch by Mickaël Schoentgen.

Misc/NEWS.d/next/Library/2018-07-28-17-00-36.bpo-34263.zUfRsu.rst

-asyncio's event loop will not pass timeouts longer than one day to
-epoll/select etc.

Misc/NEWS.d/next/Library/2018-07-29-11-32-56.bpo-34270.aL6P-3.rst

-The default asyncio task class now always has a name which can be get or set
-using two new methods (:meth:`~asyncio.Task.get_name()` and
-:meth:`~asyncio.Task.set_name`) and is visible in the :func:`repr` output. An
-initial name can also be set using the new ``name`` keyword argument to
-:func:`asyncio.create_task` or the
-:meth:`~asyncio.AbstractEventLoop.create_task` method of the event loop.
-If no initial name is set, the default Task implementation generates a name
-like ``Task-1`` using a monotonic counter.

Misc/NEWS.d/next/Library/2018-07-29-13-50-32.bpo-32321.hDoNKC.rst

-Add pure Python fallback for functools.reduce.
-Patch by Robert Wright.

Misc/NEWS.d/next/Library/2018-07-29-14-12-23.bpo-31047.FSarLs.rst

-Fix ``ntpath.abspath`` for invalid paths on windows. Patch by Franz
-Woellert.

Misc/NEWS.d/next/Library/2018-07-29-15-25-15.bpo-34246.xiKq-Q.rst

-:meth:`smtplib.SMTP.send_message` no longer modifies the content of the
-*mail_options* argument. Patch by Pablo S. Blum de Aguiar.

Misc/NEWS.d/next/Library/2018-07-29-21-53-15.bpo-33089.hxbp3g.rst

-Add math.dist() to compute the Euclidean distance between two points.

Misc/NEWS.d/next/Library/2018-07-31-23-00-09.bpo-34248.5U6wwc.rst

-Report filename in the exception raised when the database file cannot be opened
-by :func:`dbm.gnu.open` and :func:`dbm.ndbm.open` due to OS-related error.
-Patch by Zsolt Cserna.

Misc/NEWS.d/next/Library/2018-07-31-23-33-06.bpo-33613.Cdnt0i.rst

-Fix a race condition in ``multiprocessing.semaphore_tracker`` when the
-tracker receives SIGINT before it can register signal handlers for ignoring
-it.

Misc/NEWS.d/next/Library/2018-08-01-21-26-17.bpo-9372.V8Ou3K.rst

-Deprecate :meth:`__getitem__` methods of
-:class:`xml.dom.pulldom.DOMEventStream`, :class:`wsgiref.util.FileWrapper`
-and :class:`fileinput.FileInput`.

Misc/NEWS.d/next/Library/2018-08-02-14-43-42.bpo-34318.GneiXs.rst

-:func:`~unittest.TestCase.assertRaises`,
-:func:`~unittest.TestCase.assertRaisesRegex`,
-:func:`~unittest.TestCase.assertWarns` and
-:func:`~unittest.TestCase.assertWarnsRegex` no longer success if the passed
-callable is None. They no longer ignore unknown keyword arguments in the
-context manager mode. A DeprecationWarning was raised in these cases
-since Python 3.5.

Misc/NEWS.d/next/Library/2018-08-02-20-39-32.bpo-26502.eGXr_k.rst

-Implement ``traceback.FrameSummary.__len__()`` method to preserve
-compatibility with the old tuple API.

Misc/NEWS.d/next/Library/2018-08-02-21-28-38.bpo-18540.AryoYY.rst

-The :class:`imaplib.IMAP4` and :class:`imaplib.IMAP4_SSL` classes now
-resolve to the local host IP correctly when the default value of *host*
-parameter (``''``) is used.

Misc/NEWS.d/next/Library/2018-08-04-00-06-28.bpo-34333.5NHG93.rst

-Fix %-formatting in :meth:`pathlib.PurePath.with_suffix` when formatting an
-error message.

Misc/NEWS.d/next/Library/2018-08-06-11-01-18.bpo-34341.E0b9p2.rst

-Appending to the ZIP archive with the ZIP64 extension no longer grows the
-size of extra fields of existing entries.

Misc/NEWS.d/next/Library/2018-08-06-21-47-03.bpo-2122.GWdmrm.rst

-The :meth:`mmap.flush() <mmap.mmap.flush>` method now returns ``None`` on
-success, raises an exception on error under all platforms.

Misc/NEWS.d/next/Library/2018-08-12-00-14-54.bpo-22602.ybG9K8.rst

-The UTF-7 decoder now raises :exc:`UnicodeDecodeError` for ill-formed
-sequences starting with "+" (as specified in RFC 2152).  Patch by Zackery
-Spytz.

Misc/NEWS.d/next/Library/2018-08-12-08-43-21.bpo-34384.yjofCv.rst

-:func:`os.readlink` now accepts :term:`path-like <path-like object>` and
-:class:`bytes` objects on Windows.

Misc/NEWS.d/next/Library/2018-08-15-16-22-30.bpo-31715.Iw8jS8.rst

-Associate ``.mjs`` file extension with ``application/javascript`` MIME Type.

Misc/NEWS.d/next/Library/2018-08-16-16-47-15.bpo-20849.YWJECC.rst

-shutil.copytree now accepts a new ``dirs_exist_ok`` keyword argument.
-Patch by Josh Bronson.

Misc/NEWS.d/next/Library/2018-08-16-19-07-05.bpo-34412.NF5Jm2.rst

-Make :func:`signal.strsignal` work on HP-UX. Patch by Michael Osipov.

Misc/NEWS.d/next/Library/2018-08-20-13-53-10.bpo-34427.tMRQjl.rst

-Fix infinite loop in ``a.extend(a)`` for ``MutableSequence`` subclasses.

Misc/NEWS.d/next/Library/2018-08-20-16-48-32.bpo-34441._zx9lU.rst

-Fix crash when an ``ABC``-derived class with invalid ``__subclasses__`` is
-passed as the second argument to :func:`issubclass()`. Patch by Alexey
-Izbyshev.

Misc/NEWS.d/next/Library/2018-08-21-00-29-01.bpo-34171.6LkWav.rst

-Running the :mod:`trace` module no longer creates the ``trace.cover`` file.

Misc/NEWS.d/next/Library/2018-08-22-17-43-52.bpo-6700.hp7C4B.rst

-Fix inspect.getsourcelines for module level frames/tracebacks.
-Patch by Vladimir Matveev.

Misc/NEWS.d/next/Library/2018-08-22-21-59-08.bpo-34454.z7uG4b.rst

-Fix the .fromisoformat() methods of datetime types crashing when given
-unicode with non-UTF-8-encodable code points.  Specifically,
-datetime.fromisoformat() now accepts surrogate unicode code points used as
-the separator. Report and tests by Alexey Izbyshev, patch by Paul Ganssle.

Misc/NEWS.d/next/Library/2018-08-23-09-25-08.bpo-34472.cGyYrO.rst

-Improved compatibility for streamed files in :mod:`zipfile`. Previously an
-optional signature was not being written and certain ZIP applications were
-not supported. Patch by Silas Sewell.

Misc/NEWS.d/next/Library/2018-08-24-17-31-27.bpo-13312.6hA5La.rst

-Avoids a possible integer underflow (undefined behavior) in the time
-module's year handling code when passed a very low negative year value.

Misc/NEWS.d/next/Library/2018-08-27-16-01-22.bpo-34515.S0Irst.rst

-Fix parsing non-ASCII identifiers in :mod:`lib2to3.pgen2.tokenize` (PEP 3131).

Misc/NEWS.d/next/Library/2018-08-30-14-44-11.bpo-22872.NhIaZ9.rst

-When the queue is closed, :exc:`ValueError` is now raised by
-:meth:`multiprocessing.Queue.put` and :meth:`multiprocessing.Queue.get`
-instead of :exc:`AssertionError` and :exc:`OSError`, respectively.
-Patch by Zackery Spytz.

Misc/NEWS.d/next/Library/2018-08-31-06-28-03.bpo-34282.ztyXH8.rst

-Move ``Enum._convert`` to ``EnumMeta._convert_`` and fix enum members getting
-shadowed by parent attributes.

Misc/NEWS.d/next/Library/2018-08-31-19-26-55.bpo-34558.MHv582.rst

-Correct typo in Lib/ctypes/_aix.py

Misc/NEWS.d/next/Library/2018-09-01-20-43-10.bpo-34563.7NQK7B.rst

-On Windows, fix multiprocessing.Connection for very large read: fix _winapi.PeekNamedPipe() and _winapi.ReadFile() for read larger than INT_MAX (usually 2^31-1).
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-09-03-23-23-32.bpo-34530.h_Xsu7.rst

-``distutils.spawn.find_executable()`` now falls back on :data:`os.defpath`
-if the ``PATH`` environment variable is not set.

Misc/NEWS.d/next/Library/2018-09-03-23-54-35.bpo-8110.FExWI_.rst

-Refactored :mod:`subprocess` to check for Windows-specific modules rather
-than ``sys.platform == 'win32'``.

Misc/NEWS.d/next/Library/2018-09-04-09-32-54.bpo-34574.X4RwYI.rst

-OrderedDict iterators are not exhausted during pickling anymore. Patch by
-Sergey Fedoseev.

Misc/NEWS.d/next/Library/2018-09-06-10-07-46.bpo-30977.bP661V.rst

-Make uuid.UUID use ``__slots__`` to reduce its memory footprint. Based on
-original patch by Wouter Bolsterlee.

Misc/NEWS.d/next/Library/2018-09-07-10-16-34.bpo-34604.xL7-kG.rst

-Fix possible mojibake in the error message of `pwd.getpwnam` and
-`grp.getgrnam` using string representation because of invisible characters
-or trailing whitespaces. Patch by William Grzybowski.

Misc/NEWS.d/next/Library/2018-09-07-10-57-00.bpo-34421.AKJISD.rst

-Fix distutils logging for non-ASCII strings.  This caused installation issues on Windows.

Misc/NEWS.d/next/Library/2018-09-08-12-57-07.bpo-34610.wmoP5j.rst

-Fixed iterator of :class:`multiprocessing.managers.DictProxy`.

Misc/NEWS.d/next/Library/2018-09-10-13-04-40.bpo-34622.tpv_rN.rst

-Create a dedicated ``asyncio.CancelledError``, ``asyncio.InvalidStateError``
-and ``asyncio.TimeoutError`` exception classes.  Inherit them from
-corresponding exceptions from ``concurrent.futures`` package. Extract
-``asyncio`` exceptions into a separate file.

Misc/NEWS.d/next/Library/2018-09-10-14-15-53.bpo-32270.wSJjuD.rst

-The subprocess module no longer mistakenly closes redirected fds even when
-they were in pass_fds when outside of the default {0, 1, 2} set.

Misc/NEWS.d/next/Library/2018-09-10-17-46-51.bpo-34625.D2YfDz.rst

-Update vendorized expat library version to 2.2.6.

Misc/NEWS.d/next/Library/2018-09-10-21-09-34.bpo-34363.YuSb0T.rst

-dataclasses.asdict() and .astuple() now handle namedtuples correctly.

Misc/NEWS.d/next/Library/2018-09-11-01-25-35.bpo-32490.ROIDO1.rst

-Prevent filename duplication in :mod:`subprocess` exception messages.  Patch
-by Zackery Spytz.

Misc/NEWS.d/next/Library/2018-09-11-10-00-53.bpo-34630.YbqUS6.rst

-Don't log SSL certificate errors in asyncio code (connection error logging
-is skipped already).

Misc/NEWS.d/next/Library/2018-09-11-10-51-16.bpo-24412.i-F_E5.rst

-Add :func:`~unittest.addModuleCleanup()` and
-:meth:`~unittest.TestCase.addClassCleanup()` to unittest to support
-cleanups for :func:`~unittest.setUpModule()` and
-:meth:`~unittest.TestCase.setUpClass()`. Patch by Lisa Roach.

Misc/NEWS.d/next/Library/2018-09-11-15-04-05.bpo-34636.capCmt.rst

-Speed up re scanning of many non-matching characters for \s \w and \d within
-bytes objects. (microoptimization)

Misc/NEWS.d/next/Library/2018-09-11-15-49-09.bpo-34536.3IPIH5.rst

-`Enum._missing_`:  raise `ValueError` if None returned and `TypeError` if
-non-member is returned.

Misc/NEWS.d/next/Library/2018-09-12-10-33-44.bpo-34638.xaeZX5.rst

-Store a weak reference to stream reader to break strong references loop
-between reader and protocol.  It allows to detect and close the socket if
-the stream is deleted (garbage collected) without ``close()`` call.

Misc/NEWS.d/next/Library/2018-09-12-14-46-51.bpo-34652.Rt1m1b.rst

-Ensure :func:`os.lchmod` is never defined on Linux.

Misc/NEWS.d/next/Library/2018-09-13-03-59-43.bpo-34658.ykZ-ia.rst

-Fix a rare interpreter unhandled exception state SystemError only seen when
-using subprocess with a preexec_fn while an after_parent handler has been
-registered with os.register_at_fork and the fork system call fails.

Misc/NEWS.d/next/Library/2018-09-13-10-09-19.bpo-6721.ZUL_F3.rst

-Acquire the logging module's commonly used internal locks while fork()ing to
-avoid deadlocks in the child process.

Misc/NEWS.d/next/Library/2018-09-13-11-49-52.bpo-34666.3uLtWv.rst

-Implement ``asyncio.StreamWriter.awrite`` and
-``asyncio.StreamWriter.aclose()`` coroutines.  Methods are needed for
-providing a consistent stream API with control flow switched on by default.

Misc/NEWS.d/next/Library/2018-09-13-21-04-23.bpo-34672.BYuKKS.rst

-Add a workaround, so the ``'Z'`` :func:`time.strftime` specifier on the musl
-C library can work in some cases.

Misc/NEWS.d/next/Library/2018-09-14-10-38-18.bpo-31177.Sv91TN.rst

-Fix bug that prevented using :meth:`reset_mock <unittest.mock.Mock.reset_mock>`
-on mock instances with deleted attributes

Misc/NEWS.d/next/Library/2018-09-14-12-38-49.bpo-32718.ICYQbt.rst

-The Activate.ps1 script from venv works with PowerShell Core 6.1 and is now
-available under all operating systems.

Misc/NEWS.d/next/Library/2018-09-14-14-29-45.bpo-34670.17XwGB.rst

-Add SSLContext.post_handshake_auth and
-SSLSocket.verify_client_post_handshake for TLS 1.3's post
-handshake authentication feature.

Misc/NEWS.d/next/Library/2018-09-14-20-00-47.bpo-29577.RzwKFD.rst

-Support multiple mixin classes when creating Enums.

Misc/NEWS.d/next/Library/2018-09-16-17-04-16.bpo-34659.CWemzH.rst

-Add an optional *initial* argument to itertools.accumulate().

Misc/NEWS.d/next/Library/2018-09-19-16-51-04.bpo-34738.Pr3-iG.rst

-ZIP files created by :mod:`distutils` will now include entries for
-directories.

Misc/NEWS.d/next/Library/2018-09-20-16-55-43.bpo-34728.CUE8LU.rst

-Add deprecation warning when `loop` is used in methods: `asyncio.sleep`,
-`asyncio.wait` and `asyncio.wait_for`.

Misc/NEWS.d/next/Library/2018-09-20-17-35-05.bpo-32892.TOUBdg.rst

-The parser now represents all constants as :class:`ast.Constant` instead of
-using specific constant AST types (``Num``, ``Str``, ``Bytes``,
-``NameConstant`` and ``Ellipsis``). These classes are considered deprecated
-and will be removed in future Python versions.

Misc/NEWS.d/next/Library/2018-09-24-14-21-58.bpo-5950.xH0ekQ.rst

-Support reading zip files with archive comments in :mod:`zipimport`.

Misc/NEWS.d/next/Library/2018-09-24-17-14-57.bpo-34687.Fku_8S.rst

-On Windows, asyncio now uses ProactorEventLoop, instead of
-SelectorEventLoop, by default.

Misc/NEWS.d/next/Library/2018-09-25-08-42-34.bpo-34334.rSPBW9.rst

-In :class:`QueueHandler`, clear `exc_text` from :class:`LogRecord` to
-prevent traceback from being written twice.

Misc/NEWS.d/next/Library/2018-09-25-15-48-50.bpo-34789.rPOEj5.rst

-:func:`xml.sax.make_parser` now accepts any iterable as its *parser_list*
-argument.  Patch by Andrés Delfino.

Misc/NEWS.d/next/Library/2018-09-26-14-09-34.bpo-34758.bRBfAi.rst

-Add .wasm -> application/wasm to list of recognized file types and content
-type headers

Misc/NEWS.d/next/Library/2018-09-27-09-45-00.bpo-34819.9ZaFyO.rst

-Use a monotonic clock to compute timeouts in :meth:`Executor.map` and :func:`as_completed`, in order to prevent timeouts from deviating when the system clock is adjusted.

Misc/NEWS.d/next/Library/2018-09-27-13-14-15.bpo-34022.E2cl0r.rst

-The :envvar:`SOURCE_DATE_EPOCH` environment variable no longer overrides the
-value of the *invalidation_mode* argument to :func:`py_compile.compile`, and
-determines its default value instead.

Misc/NEWS.d/next/Library/2018-09-30-08-08-14.bpo-34849.NXK9Ff.rst

-Don't log waiting for ``selector.select`` in asyncio loop iteration. The
-waiting is pretty normal for any asyncio program, logging its time just adds
-a noise to logs without any useful information provided.

Misc/NEWS.d/next/Library/2018-10-02-19-36-34.bpo-34872.yWZRhI.rst

-Fix self-cancellation in C implementation of asyncio.Task

Misc/NEWS.d/next/Library/2018-10-03-09-25-02.bpo-34711.HeOmKR.rst

-http.server ensures it reports HTTPStatus.NOT_FOUND when the local path ends with "/"
-and is not a directory, even if the underlying OS (e.g. AIX) accepts such paths as a
-valid file reference. Patch by Michael Felt.

Misc/NEWS.d/next/Library/2018-10-03-11-07-28.bpo-34866.ML6KpJ.rst

-Adding ``max_num_fields`` to ``cgi.FieldStorage`` to make DOS attacks harder by
-limiting the number of ``MiniFieldStorage`` objects created by ``FieldStorage``.

Misc/NEWS.d/next/Library/2018-10-04-15-53-14.bpo-28441.2sQENe.rst

-On Cygwin and MinGW, ensure that ``sys.executable`` always includes the full
-filename in the path, including the ``.exe`` suffix (unless it is a symbolic
-link).

Misc/NEWS.d/next/Library/2018-10-04-17-23-43.bpo-34898.Wo2PoJ.rst

-Add `mtime` argument to `gzip.compress` for reproducible output.
-Patch by Guo Ci Teo.
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-10-04-18-46-54.bpo-34871.t3X-dB.rst

-Fix inspect module polluted ``sys.modules`` when parsing
-``__text_signature__`` of callable.

Misc/NEWS.d/next/Library/2018-10-04-20-25-35.bpo-34897.rNE2Cy.rst

-Adjust test.support.missing_compiler_executable check so that a nominal
-command name of "" is ignored. Patch by Michael Felt.

Misc/NEWS.d/next/Library/2018-10-04-20-44-45.bpo-34844.Hnuxav.rst

-logging.Formatter enhancement - Ensure styles and fmt matches in
-logging.Formatter - Added validate method in each format style class:
-StrFormatStyle, PercentStyle, StringTemplateStyle. - This method is called
-in the constructor of logging.Formatter class - Also re-raise the KeyError
-in the format method of each style class, so it would a bit clear that it's
-an error with the invalid format fields.

Misc/NEWS.d/next/Library/2018-10-05-05-55-53.bpo-34900.8RNiFu.rst

-Fixed :meth:`unittest.TestCase.debug` when used to call test methods with
-subtests.  Patch by Bruno Oliveira.

Misc/NEWS.d/next/Library/2018-10-07-20-37-02.bpo-34925.KlkZ-Y.rst

-25% speedup in argument parsing for the functions in the bisect module.

Misc/NEWS.d/next/Library/2018-10-07-21-18-52.bpo-34922.37IdsA.rst

-Fixed integer overflow in the :meth:`~hashlib.shake.digest()` and
-:meth:`~hashlib.shake.hexdigest()` methods for the SHAKE algorithm
-in the :mod:`hashlib` module.

Misc/NEWS.d/next/Library/2018-10-08-15-22-02.bpo-34911.hCy0Fv.rst

-Added *secure_protocols* argument to *http.cookiejar.DefaultCookiePolicy* to
-allow for tweaking of protocols and also to add support by default for
-*wss*, the secure websocket protocol.

Misc/NEWS.d/next/Library/2018-10-08-16-04-36.bpo-34829.B7v7D0.rst

-Add methods ``selection_from``, ``selection_range``, ``selection_present``
-and ``selection_to`` to the ``tkinter.Spinbox`` for consistency with the
-``tkinter.Entry`` widget. Patch by Juliette Monsel.

Misc/NEWS.d/next/Library/2018-10-08-21-05-11.bpo-34936.3tRqdq.rst

-Fix ``TclError`` in ``tkinter.Spinbox.selection_element()``. Patch by
-Juliette Monsel.

Misc/NEWS.d/next/Library/2018-10-09-11-01-16.bpo-34769.cSkkZt.rst

-Fix for async generators not finalizing when event loop is in debug mode and
-garbage collector runs in another thread.

Misc/NEWS.d/next/Library/2018-10-09-14-25-36.bpo-32680.z2FbOp.rst

-:class:`smtplib.SMTP` objects now always have a `sock` attribute present

Misc/NEWS.d/next/Library/2018-10-09-14-42-16.bpo-34941.1Q5QKv.rst

-Methods ``find()``, ``findtext()`` and ``findall()`` of the ``Element``
-class in the :mod:`xml.etree.ElementTree` module are now able to find
-children which are instances of ``Element`` subclasses.

Misc/NEWS.d/next/Library/2018-10-09-15-44-04.bpo-23831.2CL7lL.rst

-Add ``moveto()`` method to the ``tkinter.Canvas`` widget. Patch by Juliette
-Monsel.

Misc/NEWS.d/next/Library/2018-10-10-00-22-57.bpo-34926.CA0rqd.rst

-:meth:`mimetypes.MimeTypes.guess_type` now accepts :term:`path-like object` in addition to url strings.
-Patch by Mayank Asthana.

Misc/NEWS.d/next/Library/2018-10-12-18-57-52.bpo-34966.WZeBHO.rst

-:mod:`pydoc` now supports aliases not only to methods defined in
-the end class, but also to inherited methods.  The docstring is not
-duplicated for aliases.

Misc/NEWS.d/next/Library/2018-10-12-20-30-42.bpo-16965.xo5LAr.rst

-The :term:`2to3` :2to3fixer:`execfile` fixer now opens the file with mode
-``'rb'``.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Library/2018-10-13-07-46-50.bpo-34969.Mfnhjb.rst

-gzip: Add --fast, --best on the gzip CLI, these parameters will be used for the
-fast compression method (quick) or the best method compress (slower, but smaller
-file). Also, change the default compression level to 6 (tradeoff).

Misc/NEWS.d/next/Library/2018-10-13-11-14-13.bpo-34970.SrJTY7.rst

-Protect tasks weak set manipulation in ``asyncio.all_tasks()``

Misc/NEWS.d/next/Library/2018-10-13-18-16-20.bpo-31522.rWBb43.rst

-The `mailbox.mbox.get_string` function *from_* parameter can now successfully be set to a non-default value.

Misc/NEWS.d/next/Library/2018-10-13-19-15-23.bpo-34521.YPaiTK.rst

-Use :func:`socket.CMSG_SPACE` to calculate ancillary data size instead of
-:func:`socket.CMSG_LEN` in :func:`multiprocessing.reduction.recvfds` as
-:rfc:`3542` requires the use of the former for portable applications.

Misc/NEWS.d/next/Library/2018-10-15-23-10-41.bpo-34890.77E770.rst

-Make :func:`inspect.iscoroutinefunction`,
-:func:`inspect.isgeneratorfunction` and :func:`inspect.isasyncgenfunction`
-work with :func:`functools.partial`. Patch by Pablo Galindo.

Misc/NEWS.d/next/Library/2018-10-17-02-15-23.bpo-33947.SRuq3T.rst

-dataclasses now handle recursive reprs without raising RecursionError.

Misc/NEWS.d/next/Library/2018-10-17-11-00-00.bpo-23420.Lq74Uu.rst

-Verify the value for the parameter '-s' of the cProfile CLI. Patch by Robert
-Kuska

Misc/NEWS.d/next/Library/2018-10-17-11-54-04.bpo-35008.dotef_.rst

-Fixed references leaks when call the ``__setstate__()`` method of
-:class:`xml.etree.ElementTree.Element` in the C implementation for already
-initialized element.

Misc/NEWS.d/next/Library/2018-10-18-17-57-28.bpo-35022.KeEF4T.rst

-:class:`unittest.mock.MagicMock` now supports the ``__fspath__`` method
-(from :class:`os.PathLike`).

Misc/NEWS.d/next/Library/2018-10-20-00-29-43.bpo-34909.Ew_8DC.rst

-Enum: fix grandchildren subclassing when parent mixed with concrete data
-types.

Misc/NEWS.d/next/Library/2018-10-21-14-53-19.bpo-34794.yt3R4-.rst

-Fixed a leak in Tkinter when pass the Python wrapper around Tcl_Obj back to
-Tcl/Tk.

Misc/NEWS.d/next/Library/2018-10-23-14-46-47.bpo-31553.JxRkAW.rst

-Add the --json-lines option to json.tool. Patch by hongweipeng.
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-10-23-18-58-12.bpo-35053.G82qwh.rst

-tracemalloc now tries to update the traceback when an object is reused from a
-"free list" (optimization for faster object creation, used by the builtin list
-type for example).

Misc/NEWS.d/next/Library/2018-10-25-09-37-03.bpo-31047.kBbX8r.rst

-Fix ``ntpath.abspath`` regression where it didn't remove a trailing
-separator on Windows. Patch by Tim Graham.

Misc/NEWS.d/next/Library/2018-10-25-09-59-00.bpo-35047.abbaa.rst

-``unittest.mock`` now includes mock calls in exception messages if
-``assert_not_called``, ``assert_called_once``, or ``assert_called_once_with``
-fails. Patch by Petter Strandmark.
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-10-25-15-43-32.bpo-35024.ltSrtr.rst

-`importlib` no longer logs `wrote <bytecode path>` redundantly after
-`(created|could not create) <bytecode path>` is already logged.
-Patch by Quentin Agren.

Misc/NEWS.d/next/Library/2018-10-26-00-11-21.bpo-35017.6Ez4Cv.rst

-:meth:`socketserver.BaseServer.serve_forever` now exits immediately if it's
-:meth:`~socketserver.BaseServer.shutdown` method is called while it is
-polling for new events.

Misc/NEWS.d/next/Library/2018-10-26-21-12-55.bpo-33710.Q5oXc6.rst

-Deprecated ``l*gettext()`` functions and methods in the :mod:`gettext`
-module. They return encoded bytes instead of Unicode strings and are
-artifacts from Python 2 times. Also deprecated functions and methods related
-to setting the charset for ``l*gettext()`` functions and methods.

Misc/NEWS.d/next/Library/2018-10-26-22-53-16.bpo-35079.Tm5jvF.rst

-Improve difflib.SequenceManager.get_matching_blocks doc by adding
-'non-overlapping' and changing '!=' to '<'.

Misc/NEWS.d/next/Library/2018-10-27-21-11-42.bpo-34160.UzyPZf.rst

-ElementTree and minidom now preserve the attribute order specified by the user.

Misc/NEWS.d/next/Library/2018-10-29-10-18-31.bpo-35065.CulMN8.rst

-Remove `StreamReaderProtocol._untrack_reader`. The call to `_untrack_reader`
-is currently performed too soon, causing the protocol to forget about the
-reader before `connection_lost` can run and feed the EOF to the reader.

Misc/NEWS.d/next/Library/2018-10-29-23-09-24.bpo-35062.dQS1ng.rst

-Fix incorrect parsing of :class:`_io.IncrementalNewlineDecoder`'s
-*translate* argument.

Misc/NEWS.d/next/Library/2018-11-03-10-12-04.bpo-35152.xpqskp.rst

-Allow sending more than 2 GB at once on a multiprocessing connection on non-Windows systems.
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-11-08-14-22-29.bpo-35186.5m22Mj.rst

-Removed the "built with" comment added when ``setup.py upload`` is used with
-either ``bdist_rpm`` or ``bdist_dumb``.

Misc/NEWS.d/next/Library/2018-11-09-01-18-51.bpo-30064.IF5mH6.rst

-Use add_done_callback() in sock_* asyncio API to unsubscribe reader/writer
-early on calcellation.

Misc/NEWS.d/next/Library/2018-11-09-13-35-36.bpo-35189.gog-sl.rst

-Modify the following fnctl function to retry if interrupted by a signal
-(EINTR): flock, lockf, fnctl

Misc/NEWS.d/next/Library/2018-11-12-17-40-04.bpo-29564.SFNBT5.rst

-The warnings module now suggests to enable tracemalloc if the source is
-specified, the tracemalloc module is available, but tracemalloc is not
-tracing memory allocations.

Misc/NEWS.d/next/Library/2018-11-15-07-14-32.bpo-35226.wJPEEe.rst

-Recursively check arguments when testing for equality of
-:class:`unittest.mock.call` objects and add note that tracking of parameters
-used to create ancestors of mocks in ``mock_calls`` is not possible.

Misc/NEWS.d/next/Library/2018-11-18-18-44-40.bpo-24209.p3YWOf.rst

-Adds IPv6 support when invoking http.server directly.

Misc/NEWS.d/next/Library/2018-11-19-07-22-04.bpo-35277.dsD-2E.rst

-Update ensurepip to install pip 18.1 and setuptools 40.6.2.

Misc/NEWS.d/next/Library/2018-11-20-13-34-01.bpo-28604.iiih5h.rst

-:func:`locale.localeconv` now sets temporarily the ``LC_CTYPE`` locale to the
-``LC_MONETARY`` locale if the two locales are different and monetary strings
-are non-ASCII. This temporary change affects other threads.

Misc/NEWS.d/next/Library/2018-11-22-15-22-56.bpo-24746.eSLKBE.rst

-Avoid stripping trailing whitespace in doctest fancy diff. Orignial patch by
-R. David Murray & Jairo Trad. Enhanced by Sanyam Khurana.

Misc/NEWS.d/next/Library/2018-11-24-10-33-42.bpo-35308.9--2iy.rst

-Fix regression in ``webbrowser`` where default browsers may be preferred
-over browsers in the ``BROWSER`` environment variable.

Misc/NEWS.d/next/Library/2018-11-25-20-05-33.bpo-35312.wbw0zO.rst

-Make ``lib2to3.pgen2.parse.ParseError`` round-trip pickle-able.  Patch by Anthony Sottile.

Misc/NEWS.d/next/Library/2018-11-29-00-23-25.bpo-35344.4QOPJQ.rst

-On macOS, :func:`platform.platform` now uses :func:`platform.mac_ver`, if it
-returns a non-empty release string, to get the macOS version rather than the
-darwin version.

Misc/NEWS.d/next/Library/2018-11-29-00-55-33.bpo-35345.vepCSJ.rst

-The function `platform.popen` has been removed, it was deprecated since Python
-3.3: use :func:`os.popen` instead.

Misc/NEWS.d/next/Library/2018-11-29-09-38-40.bpo-35066.Nwej2s.rst

-Previously, calling the strftime() method on a datetime object with a
-trailing '%' in the format string would result in an exception. However,
-this only occured when the datetime C module was being used; the python
-implementation did not match this behavior. Datetime is now PEP-399
-compliant, and will not throw an exception on a trailing '%'.

Misc/NEWS.d/next/Library/2018-11-29-12-42-13.bpo-35346.OmTY5c.rst

-:func:`platform.uname` now redirects ``stderr`` to :data:`os.devnull` when
-running external programs like ``cmd /c ver``.

Misc/NEWS.d/next/Library/2018-12-01-13-44-12.bpo-35371.fTAwlX.rst

-Fixed possible crash in ``os.utime()`` on Windows when pass incorrect
-arguments.

Misc/NEWS.d/next/Library/2018-12-02-13-50-52.bpo-35341.32E8T_.rst

-Add generic version of ``collections.OrderedDict`` to the ``typing`` module.  Patch by Ismo Toijala.

Misc/NEWS.d/next/Library/2018-12-03-14-41-11.bpo-35380.SdRF9l.rst

-Enable TCP_NODELAY on Windows for proactor asyncio event loop.

Misc/NEWS.d/next/Library/2018-12-03-19-45-00.bpo-35310.9k28gR.rst

-Fix a bug in :func:`select.select` where, in some cases, the file descriptor
-sequences were returned unmodified after a signal interruption, even though the
-file descriptors might not be ready yet.  :func:`select.select` will now always
-return empty lists if a timeout has occurred.  Patch by Oran Avraham.

Misc/NEWS.d/next/Library/2018-12-04-12-17-08.bpo-35394.fuTVDk.rst

-Add empty slots to asyncio abstract protocols.

Misc/NEWS.d/next/Library/2018-12-04-12-46-05.bpo-35389.CTZ9iA.rst

-:func:`platform.libc_ver` now uses ``os.confstr('CS_GNU_LIBC_VERSION')`` if
-available and the *executable* parameter is not set.

Misc/NEWS.d/next/Library/2018-12-05-13-37-39.bpo-10496.VH-1Lp.rst

-:func:`posixpath.expanduser` now returns the input *path* unchanged if the
-``HOME`` environment variable is not set and the current user has no home
-directory (if the current user identifier doesn't exist in the password
-database). This change fix the :mod:`site` module if the current user doesn't
-exist in the password database (if the user has no home directory).

Misc/NEWS.d/next/Library/2018-12-05-17-42-49.bpo-10496.laV_IE.rst

-:func:`~distutils.utils.check_environ` of :mod:`distutils.utils` now catchs
-:exc:`KeyError` on calling :func:`pwd.getpwuid`: don't create the ``HOME``
-environment variable in this case.

Misc/NEWS.d/next/Library/2018-12-05-22-52-21.bpo-35346.Okm9-S.rst

-Drop Mac OS 9 and Rhapsody support from the :mod:`platform` module. Rhapsody
-last release was in 2000. Mac OS 9 last release was in 2001.

Misc/NEWS.d/next/Library/2018-12-06-00-43-13.bpo-35330.abB4BN.rst

-When a :class:`Mock` instance was used to wrap an object, if `side_effect`
-is used in one of the mocks of it methods, don't call the original
-implementation and return the result of using the side effect the same way
-that it is done with return_value.

Misc/NEWS.d/next/Library/2018-12-06-02-02-28.bpo-35424.gXxOJU.rst

-:class:`multiprocessing.Pool` destructor now emits :exc:`ResourceWarning`
-if the pool is still running.

Misc/NEWS.d/next/Library/2018-12-06-14-44-21.bpo-35415.-HoK3d.rst

-Validate fileno= argument to socket.socket().

Misc/NEWS.d/next/Library/2018-12-09-14-35-49.bpo-35445.LjvtsC.rst

-Memory errors during creating posix.environ no longer ignored.

Misc/NEWS.d/next/Library/2018-12-09-17-04-15.bpo-17185.SfSCJF.rst

-Set ``__signature__`` on mock for :mod:`inspect` to get signature.
-Patch by Karthikeyan Singaravelan.

Misc/NEWS.d/next/Library/2018-12-09-21-35-49.bpo-20239.V4mWBL.rst

-Allow repeated assignment deletion of :class:`unittest.mock.Mock` attributes.
-Patch by Pablo Galindo.

Misc/NEWS.d/next/Library/2018-12-10-09-48-27.bpo-35052.xE1ymg.rst

-Fix xml.dom.minidom cloneNode() on a document with an entity: pass the
-correct arguments to the user data handler of an entity.

Misc/NEWS.d/next/Library/2018-12-12-16-24-55.bpo-23057.OB4Z1Y.rst

-Unblock Proactor event loop when keyboard interrupt is received on Windows

Misc/NEWS.d/next/Library/2018-12-12-16-25-21.bpo-35471.SK8jFC.rst

-Python 2.4 dropped MacOS 9 support. The macpath module was deprecated in
-Python 3.7. The module is now removed.

Misc/NEWS.d/next/Library/2018-12-12-22-52-34.bpo-31446.l--Fjz.rst

-Copy command line that was passed to CreateProcessW since this function can
-change the content of the input buffer.

Misc/NEWS.d/next/Library/2018-12-13-00-10-51.bpo-35477.hHyy06.rst

-:meth:`multiprocessing.Pool.__enter__` now fails if the pool is not running:
-``with pool:`` fails if used more than once.

Misc/NEWS.d/next/Library/2018-12-14-12-12-15.bpo-35491.jHsNOU.rst

-:mod:`multiprocessing`: Add ``Pool.__repr__()`` and enhance
-``BaseProcess.__repr__()`` (add pid and parent pid) to ease debugging. Pool
-state constant values are now strings instead of integers, for example ``RUN``
-value becomes ``'RUN'`` instead of ``0``.

Misc/NEWS.d/next/Library/2018-12-14-13-27-45.bpo-35348.u3Y2an.rst

-Make :func:`platform.architecture` parsing of ``file`` command output more
-reliable: add the ``-b`` option to the ``file`` command to omit the filename,
-force the usage of the C locale, and search also the "shared object" pattern.

Misc/NEWS.d/next/Library/2018-12-14-23-56-48.bpo-35502.gLHuFS.rst

-Fixed reference leaks in :class:`xml.etree.ElementTree.TreeBuilder` in case
-of unfinished building of the tree (in particular when an error was raised
-during parsing XML).

Misc/NEWS.d/next/Library/2018-12-16-23-28-49.bpo-35513.pn-Zh3.rst

-:class:`~unittest.runner.TextTestRunner` of :mod:`unittest.runner` now uses
-:func:`time.perf_counter` rather than :func:`time.time` to measure the
-execution time of a test: :func:`time.time` can go backwards, whereas
-:func:`time.perf_counter` is monotonic.

Misc/NEWS.d/next/Library/2018-12-17-11-43-11.bpo-31784.W0gDjC.rst

-:func:`uuid.uuid1` now calls :func:`time.time_ns` rather than
-``int(time.time() * 1e9)``.

Misc/NEWS.d/next/Library/2018-12-18-13-52-13.bpo-35523.SkoMno.rst

-Remove :mod:`ctypes` callback workaround: no longer create a callback at
-startup. Avoid SELinux alert on ``import ctypes`` and ``import uuid``.

Misc/NEWS.d/next/Library/2018-12-18-21-12-25.bpo-35526.fYvo6H.rst

-Delaying the 'joke' of barry_as_FLUFL.mandatory to Python version 4.0
\ No newline at end of file

Misc/NEWS.d/next/Library/2018-12-20-16-24-51.bpo-35537.z4E7aA.rst

-The :mod:`subprocess` module can now use the :func:`os.posix_spawn` function in
-some cases for better performance.

Misc/NEWS.d/next/Library/2018-12-23-22-27-59.bpo-30561.PSRQ2w.rst

-random.gammavariate(1.0, beta) now computes the same result as
-random.expovariate(1.0 / beta).  This synchonizes the two algorithms and
-eliminates some idiosyncrasies in the old implementation.  It does however
-produce a difference stream of random variables than it used to.

Misc/NEWS.d/next/Library/2018-12-26-02-28-00.bpo-35585.Lkzd3Z.rst

-Speed-up building enums by value, e.g. http.HTTPStatus(200).

Misc/NEWS.d/next/Library/2018-12-26-10-55-59.bpo-35588.PSR6Ez.rst

-The floor division and modulo operations and the :func:`divmod` function on :class:`fractions.Fraction` types are 2--4x faster.
-Patch by Stefan Behnel.

Misc/NEWS.d/next/Library/2018-12-27-19-23-00.bpo-35568.PutiOC.rst

-Expose ``raise(signum)`` as `raise_signal`

Misc/NEWS.d/next/Library/2018-12-30-01-10-50.bpo-35614.cnkM4f.rst

-Fixed help() on metaclasses. Patch by Sanyam Khurana.

Misc/NEWS.d/next/Library/2018-12-30-14-56-33.bpo-28503.V4kNN3.rst

-The `crypt` module now internally uses the `crypt_r()` library function
-instead of `crypt()` when available.

Misc/NEWS.d/next/Library/2018-12-30-19-50-36.bpo-35619.ZRXdhy.rst

-Improved support of custom data descriptors in :func:`help` and
-:mod:`pydoc`.

Misc/NEWS.d/next/Library/2019-01-02-20-04-49.bpo-35643.DaMiaV.rst

-Fixed a SyntaxWarning: invalid escape sequence in Modules/_sha3/cleanup.py.
-Patch by Mickaël Schoentgen.

Misc/NEWS.d/next/Library/2019-01-04-22-18-25.bpo-35664.Z-Gyyj.rst

-Improve operator.itemgetter() performance by 33% with optimized argument
-handling and with adding a fast path for the common case of a single
-non-negative integer index into a tuple (which is the typical use case in
-the standard library).

Misc/NEWS.d/next/Library/2019-01-07-17-17-16.bpo-35283.WClosC.rst

-Add a deprecated warning for the :meth:`threading.Thread.isAlive` method.
-Patch by Dong-hee Na.

Misc/NEWS.d/next/Library/2019-01-08-01-54-02.bpo-35682.KDM9lk.rst

-Fix ``asyncio.ProactorEventLoop.sendfile()``: don't attempt to set the result
-of an internal future if it's already done.

Misc/NEWS.d/next/Library/2019-01-08-14-00-52.bpo-32710.Sn5Ujj.rst

-Fix a memory leak in asyncio in the ProactorEventLoop when ``ReadFile()`` or
-``WSASend()`` overlapped operation fail immediately: release the internal
-buffer.

Misc/NEWS.d/next/Library/2019-01-10-14-03-12.bpo-35702._ct_0H.rst

-The :data:`time.CLOCK_UPTIME_RAW` constant is now available for macOS 10.12.
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-01-10-15-55-10.bpo-32710.KwECPu.rst

-Fix memory leaks in asyncio ProactorEventLoop on overlapped operation
-failure.

Misc/NEWS.d/next/Library/2019-01-11-07-09-25.bpo-35699.VDiENF.rst

-Fixed detection of Visual Studio Build Tools 2017 in distutils
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-01-11-17-56-15.bpo-35717.6TDTB_.rst

-Fix KeyError exception raised when using enums and compile. Patch
-contributed by Rémi Lapeyre.

Misc/NEWS.d/next/Library/2019-01-11-20-21-59.bpo-35719.qyRcpE.rst

-Sped up multi-argument :mod:`math` functions atan2(), copysign(),
-remainder() and hypot() by 1.3--2.5 times.

Misc/NEWS.d/next/Library/2019-01-13-01-33-00.bpo-35726.dasdas.rst

-QueueHandler.prepare() now makes a copy of the record before modifying and enqueueing it, to avoid affecting other handlers in the chain.

Misc/NEWS.d/next/Library/2019-01-13-18-42-41.bpo-35733.eFfLiv.rst

-``ast.Constant(boolean)`` no longer an instance of :class:`ast.Num`.  Patch by Anthony
-Sottile.

Misc/NEWS.d/next/Library/2019-01-14-14-13-08.bpo-35674.kamWqz.rst

-Add a new :func:`os.posix_spawnp` function.
-Patch by Joannah Nanjekye.
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-01-14-17-34-36.bpo-34323.CRErrt.rst

-:mod:`asyncio`: Enhance ``IocpProactor.close()`` log: wait 1 second before
-the first log, then log every second. Log also the number of seconds since
-``close()`` was called.

Misc/NEWS.d/next/Library/2019-01-15-13-31-30.bpo-23846.LT_qL8.rst

-:class:`asyncio.ProactorEventLoop` now catchs and logs send errors when the
-self-pipe is full.

Misc/NEWS.d/next/Library/2019-01-18-13-44-13.bpo-35537.R1lbTl.rst

-:func:`os.posix_spawn` and :func:`os.posix_spawnp` now have a *setsid* parameter.
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-01-19-17-01-43.bpo-35780.CLf7fT.rst

-Fix lru_cache() errors arising in recursive, reentrant, or
-multi-threaded code. These errors could result in orphan links and in
-the cache being trapped in a state with fewer than the specified maximum
-number of links.  Fix handling of negative maxsize which should have
-been treated as zero.  Fix errors in toggling the "full" status flag.
-Fix misordering of links when errors are encountered.  Sync-up the C
-code and pure Python code for the space saving path in functions with a
-single positional argument. In this common case, the space overhead of
-an lru cache entry is reduced by almost half.  Fix counting of cache
-misses. In error cases, the miss count was out of sync with the actual
-number of times the underlying user function was called.

Misc/NEWS.d/next/Library/2019-01-23-22-44-37.bpo-35813.Yobj-Y.rst

-Shared memory submodule added to multiprocessing to avoid need for
-serialization between processes

Misc/NEWS.d/next/Library/2019-01-29-09-11-09.bpo-35847.eiSi4t.rst

-RISC-V needed the CTYPES_PASS_BY_REF_HACK.  Fixes ctypes Structure test_pass_by_value.

Misc/NEWS.d/next/Library/2019-01-29-17-24-52.bpo-35537.Q0ktFC.rst

-An ExitStack is now used internally within subprocess.POpen to clean up pipe
-file handles. No behavior change in normal operation. But if closing one
-handle were ever to cause an exception, the others will now be closed
-instead of leaked.  (patch by Giampaolo Rodola)

Misc/NEWS.d/next/Library/2019-01-30-20-22-36.bpo-35864.ig9KnG.rst

-The _asdict() method for collections.namedtuple now returns a regular dict
-instead of an OrderedDict.

Misc/NEWS.d/next/Library/2019-02-02-00-04-01.bpo-35845.1jx2wk.rst

-Add 'order' parameter to memoryview.tobytes().

Misc/NEWS.d/next/Security/2017-08-06-14-43-45.bpo-28414.mzZ6vD.rst

-The ssl module now allows users to perform their own IDN en/decoding when using SNI.

Misc/NEWS.d/next/Security/2018-03-02-10-24-52.bpo-32981.O_qDyj.rst

-Regexes in difflib and poplib were vulnerable to catastrophic backtracking.
-These regexes formed potential DOS vectors (REDOS). They have been
-refactored. This resolves CVE-2018-1060 and CVE-2018-1061.
-Patch by Jamie Davis.

Misc/NEWS.d/next/Security/2018-03-05-10-09-51.bpo-33001.elj4Aa.rst

-Minimal fix to prevent buffer overrun in os.symlink on Windows

Misc/NEWS.d/next/Security/2018-03-25-12-05-43.bpo-33136.TzSN4x.rst

-Harden ssl module against LibreSSL CVE-2018-8970.
-X509_VERIFY_PARAM_set1_host() is called with an explicit namelen. A new test
-ensures that NULL bytes are not allowed.

Misc/NEWS.d/next/Security/2018-05-28-08-55-30.bpo-32533.IzwkBI.rst

-Fixed thread-safety of error handling in _ssl.

Misc/NEWS.d/next/Security/2018-06-26-19-35-33.bpo-33871.S4HR9n.rst

-Fixed sending the part of the file in :func:`os.sendfile` on macOS.  Using
-the *trailers* argument could cause sending more bytes from the input file
-than was specified.

Misc/NEWS.d/next/Security/2018-08-15-12-12-47.bpo-34405.qbHTH_.rst

-Updated to OpenSSL 1.1.0i for Windows builds.

Misc/NEWS.d/next/Security/2018-09-10-16-05-39.bpo-34623.Ua9jMv.rst

-CVE-2018-14647: The C accelerated _elementtree module now initializes hash
-randomization salt from _Py_HashSecret instead of libexpat's default CSPRNG.

Misc/NEWS.d/next/Security/2018-09-11-18-30-55.bpo-17239.kOpwK2.rst

-The xml.sax and xml.dom.minidom parsers no longer processes external
-entities by default. External DTD and ENTITY declarations no longer
-load files or create network connections.

Misc/NEWS.d/next/Security/2018-09-24-18-49-25.bpo-34791.78GmIG.rst

-The xml.sax and xml.dom.domreg no longer use environment variables to
-override parser implementations when sys.flags.ignore_environment is set by
--E or -I arguments.

Misc/NEWS.d/next/Security/2018-11-23-15-00-23.bpo-34812.84VQnb.rst

-The :option:`-I` command line option (run Python in isolated mode) is now
-also copied by the :mod:`multiprocessing` and :mod:`distutils` modules when
-spawning child processes. Previously, only :option:`-E` and :option:`-s` options
-(enabled by :option:`-I`) were copied.

Misc/NEWS.d/next/Security/2019-01-15-18-16-05.bpo-35746.nMSd0j.rst

-[CVE-2019-5010] Fix a NULL pointer deref in ssl module. The cert parser did
-not handle CRL distribution points with empty DP or URI correctly. A
-malicious or buggy certificate can result into segfault.

Misc/NEWS.d/next/Tests/2017-10-18-18-07-45.bpo-31809.KlQrkE.rst

-Add tests to verify connection with secp ECDH curves.

Misc/NEWS.d/next/Tests/2018-01-08-13-33-47.bpo-19417.2asoXy.rst

-Add test_bdb.py.

Misc/NEWS.d/next/Tests/2018-01-12-09-05-19.bpo-27643._6z49y.rst

-Test_C test case needs "signed short" bitfields, but the
-IBM XLC compiler (on AIX) does not support this
-Skip the code and test when AIX and XLC are used
-
-Applicable to Python2-2.7 and later

Misc/NEWS.d/next/Tests/2018-01-25-18-10-47.bpo-32663.IKDsqu.rst

-Making sure the `SMTPUTF8SimTests` class of tests gets run in
-test_smtplib.py.

Misc/NEWS.d/next/Tests/2018-03-09-07-05-12.bpo-32517.ugc1iW.rst

-Fix failing ``test_asyncio`` on macOS 10.12.2+ due to transport of
-``KqueueSelector`` loop was not being closed.

Misc/NEWS.d/next/Tests/2018-03-28-01-35-02.bpo-32872.J5NDUj.rst

-Avoid regrtest compatibility issue with namespace packages.

Misc/NEWS.d/next/Tests/2018-04-27-11-46-35.bpo-33358._OcR59.rst

-Fix ``test_embed.test_pre_initialization_sys_options()`` when the interpreter
-is built with ``--enable-shared``.

Misc/NEWS.d/next/Tests/2018-05-10-16-59-15.bpo-32962.S-rcIN.rst

-Fixed test_gdb when Python is compiled with flags -mcet -fcf-protection -O0.

Misc/NEWS.d/next/Tests/2018-05-26-16-01-40.bpo-33655.Frb4LA.rst

-Ignore test_posix_fallocate failures on BSD platforms that might be due to
-running on ZFS.

Misc/NEWS.d/next/Tests/2018-06-01-14-25-31.bpo-33562.GutEHf.rst

-Check that a global asyncio event loop policy is not left behind by any
-tests.

Misc/NEWS.d/next/Tests/2018-06-16-01-37-31.bpo-33873.d86vab.rst

-Fix a bug in ``regrtest`` that caused an extra test to run if
---huntrleaks/-R was used. Exit with error in case that invalid
-parameters are specified to --huntrleaks/-R (at least one warmup
-run and one repetition must be used).

Misc/NEWS.d/next/Tests/2018-06-19-14-04-21.bpo-33901.OFW1Sr.rst

-Fix test_dbm_gnu on macOS with gdbm 1.15: add a larger value to make sure that
-the file size changes.

Misc/NEWS.d/next/Tests/2018-06-19-17-55-46.bpo-33746.Sz7avn.rst

-Fix test_unittest when run in verbose mode.

Misc/NEWS.d/next/Tests/2018-07-10-18-53-46.bpo-0.UBQJBc.rst

-Improved an error message when mock assert_has_calls fails.

Misc/NEWS.d/next/Tests/2018-08-08-22-41-30.bpo-11191.eq9tSH.rst

-Skip the distutils test 'test_search_cpp' when using XLC as compiler
-patch by aixtools (Michael Felt)

Misc/NEWS.d/next/Tests/2018-08-10-16-17-51.bpo-34373.SKdb1k.rst

-Fix ``test_mktime`` and ``test_pthread_getcpuclickid`` tests for AIX
-Add range checking for ``_PyTime_localtime`` for AIX
-Patch by Michael Felt

Misc/NEWS.d/next/Tests/2018-08-14-10-47-44.bpo-34399.D_jd1G.rst

-Update all RSA keys and DH params to use at least 2048 bits.

Misc/NEWS.d/next/Tests/2018-08-14-20-50-07.bpo-11192.g7TwYm.rst

-Fix `test_socket` on AIX
-AIX 6.1 and later IPv6 zone id supports only supported by inet_pton6_zone()
-Switch to runtime-based platform.system() to establish current platform
- rather than build-time based sys.platform()

Misc/NEWS.d/next/Tests/2018-08-16-18-48-47.bpo-34391.ouNfxC.rst

-Fix ftplib test for TLS 1.3 by reading from data socket.

Misc/NEWS.d/next/Tests/2018-08-24-20-23-15.bpo-34490.vb2cx4.rst

-On AIX with AF_UNIX family sockets getsockname() does not provide 'sockname',
-so skip calls to transport.get_extra_info('sockname')

Misc/NEWS.d/next/Tests/2018-08-25-13-28-18.bpo-34347.IsRDPB.rst

-Fix `test_utf8_mode.test_cmd_line` for AIX

Misc/NEWS.d/next/Tests/2018-08-26-13-12-34.bpo-11193.H8fCGa.rst

-Remove special condition for AIX in `test_subprocess.test_undecodable_env`

Misc/NEWS.d/next/Tests/2018-08-29-16-30-52.bpo-34542.9stVAW.rst

-Use 3072 RSA keys and SHA-256 signature for test certs and keys.

Misc/NEWS.d/next/Tests/2018-09-04-15-16-42.bpo-34579.bp4HdM.rst

-Fix test_embed for AIX
-Patch by Michael Felt

Misc/NEWS.d/next/Tests/2018-09-05-23-50-21.bpo-34594.tqL-GS.rst

-Fix usage of hardcoded ``errno`` values in the tests.

Misc/NEWS.d/next/Tests/2018-09-09-14-36-59.bpo-34569.okj1Xh.rst

-The experimental PEP 554 data channels now correctly pass negative PyLong
-objects between subinterpreters on 32-bit systems. Patch by Michael Felt.

Misc/NEWS.d/next/Tests/2018-09-12-17-00-34.bpo-34200.dfxYQK.rst

-Fixed non-deterministic flakiness of test_pkg by not using the scary
-test.support.module_cleanup() logic to save and restore sys.modules contents
-between test cases.

Misc/NEWS.d/next/Tests/2018-09-13-09-53-15.bpo-34661.bdTamP.rst

-Fix test_shutil if unzip doesn't support -t.

Misc/NEWS.d/next/Tests/2018-09-13-20-58-07.bpo-34587.rCcxp3.rst

-test_socket: Remove RDSTest.testCongestion(). The test tries to fill the
-receiver's socket buffer and expects an error. But the RDS protocol doesn't
-require that. Moreover, the Linux implementation of RDS expects that the
-producer of the messages reduces its rate, it's not the role of the receiver to
-trigger an error. The test fails on Fedora 28 by design, so just remove it.

Misc/NEWS.d/next/Tests/2018-09-21-17-33-41.bpo-34537.GImYtZ.rst

-Fix ``test_gdb.test_strings()`` when ``LC_ALL=C`` and GDB was compiled with
-Python 3.6 or earlier.

Misc/NEWS.d/next/Tests/2018-10-09-23-51-07.bpo-23596.rdnert.rst

-Use argparse for the command line of the gzip module. Patch by Antony Lee

Misc/NEWS.d/next/Tests/2018-10-11-22-34-27.bpo-34962.0PLBi8.rst

-make docstest in Doc now passes., and is enforced in CI

Misc/NEWS.d/next/Tests/2018-10-27-13-41-55.bpo-34279.v0Xqxe.rst

-regrtest issue a warning when no tests have been executed in a particular
-test file. Also, a new final result state is issued if no test have been
-executed across all test files. Patch by Pablo Galindo.

Misc/NEWS.d/next/Tests/2018-11-04-20-17-09.bpo-21263.T3qo9r.rst

-After several reports that test_gdb does not work properly on macOS and
-since gdb is not shipped by default anymore, test_gdb is now skipped on
-macOS when LLVM Clang has been used to compile Python. Patch by
-Lysandros Nikolaou

Misc/NEWS.d/next/Tests/2018-11-26-16-54-21.bpo-35317.jByGP2.rst

-Fix ``mktime()`` overflow error in ``test_email``: run
-``test_localtime_daylight_true_dst_true()`` and
-``test_localtime_daylight_false_dst_true()`` with a specific timezone.

Misc/NEWS.d/next/Tests/2018-11-30-17-18-56.bpo-35352.8bD7GC.rst

-Modify test_asyncio to use the certificate set from the test directory.

Misc/NEWS.d/next/Tests/2018-12-09-01-27-29.bpo-33725.TaGayj.rst

-test_multiprocessing_fork may crash on recent versions of macOS.  Until the
-issue is resolved, skip the test on macOS.

Misc/NEWS.d/next/Tests/2018-12-10-13-18-37.bpo-26704.DBAN4c.rst

-Added test demonstrating double-patching of an instance method.  Patch by
-Anthony Sottile.

Misc/NEWS.d/next/Tests/2018-12-12-18-07-58.bpo-35412.kbuJor.rst

-Add testcase to ``test_future4``: check unicode literal.

Misc/NEWS.d/next/Tests/2018-12-12-18-20-18.bpo-34279.DhKcuP.rst

-:func:`test.support.run_unittest` no longer raise :exc:`TestDidNotRun` if
-the test result contains skipped tests. The exception is now only raised if
-no test have been run and no test have been skipped.

Misc/NEWS.d/next/Tests/2018-12-16-23-36-47.bpo-35513.k4WHlA.rst

-Replace :func:`time.time` with :func:`time.monotonic` in tests to measure
-time delta.

Misc/NEWS.d/next/Tests/2018-12-17-16-41-45.bpo-35519.RR3L_w.rst

-Rename :mod:`test.bisect` module to :mod:`test.bisect_cmd` to avoid conflict
-with :mod:`bisect` module when running directly a test like
-``./python Lib/test/test_xmlrpc.py``.

Misc/NEWS.d/next/Tests/2018-12-18-22-36-53.bpo-35424.1Pz4IS.rst

-Fix test_multiprocessing_main_handling: use :class:`multiprocessing.Pool` with
-a context manager and then explicitly join the pool.

Misc/NEWS.d/next/Tests/2018-12-18-23-20-39.bpo-31731.tcv85C.rst

-Fix a race condition in ``check_interrupted_write()`` of test_io: create
-directly the thread with SIGALRM signal blocked, rather than blocking the
-signal later from the thread. Previously, it was possible that the thread gets
-the signal before the signal is blocked.

Misc/NEWS.d/next/Tests/2019-01-04-21-34-53.bpo-35488.U7JJzP.rst

-Add a test to pathlib's Path.match() to verify it does not support glob-style ** recursive pattern matching.
\ No newline at end of file

Misc/NEWS.d/next/Tests/2019-01-07-23-22-44.bpo-33717.GhHXv8.rst

-test.pythoninfo now logs information of all clocks, not only time.time() and
-time.perf_counter().

Misc/NEWS.d/next/Tests/2019-01-07-23-34-41.bpo-32710.Hzo1b8.rst

-``test_asyncio/test_sendfile.py`` now resets the event loop policy using
-:func:`tearDownModule` as done in other tests, to prevent a warning when
-running tests on Windows.

Misc/NEWS.d/next/Tests/2019-01-10-18-35-42.bpo-35045.qdd6d9.rst

-Make ssl tests less strict and also accept TLSv1 as system default. The
-changes unbreaks test_min_max_version on Fedora 29.

Misc/NEWS.d/next/Tests/2019-01-18-12-19-19.bpo-35772.sGBbsn.rst

-Fix sparse file tests of test_tarfile on ppc64 with the tmpfs filesystem. Fix
-the function testing if the filesystem supports sparse files: create a file
-which contains data and "holes", instead of creating a file which contains no
-data. tmpfs effective block size is a page size (tmpfs lives in the page cache).
-RHEL uses 64 KiB pages on aarch64, ppc64, ppc64le, only s390x and x86_64 use 4
-KiB pages, whereas the test punch holes of 4 KiB.

Misc/NEWS.d/next/Tools-Demos/2017-09-26-10-11-21.bpo-31583.TM90_H.rst

-Fix 2to3 for using with --add-suffix option but without --output-dir
-option for relative path to files in current directory.

Misc/NEWS.d/next/Tools-Demos/2017-12-07-20-51-20.bpo-32222.hPBcGT.rst

-Fix pygettext not extracting docstrings for functions with type annotated
-arguments.
-Patch by Toby Harradine.

Misc/NEWS.d/next/Tools-Demos/2018-02-20-12-16-47.bpo-32885.dL5x7C.rst

-Add an ``-n`` flag for ``Tools/scripts/pathfix.py`` to disable automatic
-backup creation (files with ``~`` suffix).

Misc/NEWS.d/next/Tools-Demos/2018-03-02-16-23-31.bpo-25427.1mgMOG.rst

-Remove the pyvenv script in favor of ``python3 -m venv`` in order to lower
-confusion as to what Python interpreter a virtual environment will be
-created for.

Misc/NEWS.d/next/Tools-Demos/2018-03-16-17-25-05.bpo-29673.m8QtaW.rst

-Fix pystackv and pystack gdbinit macros.

Misc/NEWS.d/next/Tools-Demos/2018-03-26-18-54-24.bpo-31920.u_WKsT.rst

-Fixed handling directories as arguments in the ``pygettext`` script. Based
-on patch by Oleg Krasnikov.

Misc/NEWS.d/next/Tools-Demos/2018-04-03-18-10-00.bpo-33189.QrXR00.rst

-:program:`pygettext.py` now recognizes only literal strings as docstrings
-and translatable strings, and rejects bytes literals and f-string expressions.

Misc/NEWS.d/next/Tools-Demos/2018-06-14-16-16-53.bpo-32962.2YfdwI.rst

-python-gdb now catchs ValueError on read_var(): when Python has no debug
-symbols for example.

Misc/NEWS.d/next/Tools-Demos/2018-06-14-16-23-07.bpo-32962.Q3Dwns.rst

-python-gdb now catchs ``UnicodeDecodeError`` exceptions when calling
-``string()``.

Misc/NEWS.d/next/Tools-Demos/2018-07-24-00-11-44.bpo-20260.klmmqI.rst

-Argument Clinic now has non-bitwise unsigned int converters.

Misc/NEWS.d/next/Tools-Demos/2018-10-15-13-22-28.bpo-34989.hU4fra.rst

-python-gdb.py now handles errors on computing the line number of a Python
-frame.

Misc/NEWS.d/next/Tools-Demos/2019-02-01-12-22-37.bpo-35884.hJkMRD.rst

-Add a benchmark script for timing various ways to access variables:
-``Tools/scripts/var_access_benchmark.py``.

Misc/NEWS.d/next/Windows/2017-11-24-12-53-54.bpo-1104.1CWSZp.rst

-Correctly handle string length in ``msilib.SummaryInfo.GetProperty()`` to
-prevent it from truncating the last character.

Misc/NEWS.d/next/Windows/2018-02-07-17-50-48.bpo-29248.Xzwj-6.rst

-Fix :func:`os.readlink` on Windows, which was mistakenly treating the
-``PrintNameOffset`` field of the reparse data buffer as a number of
-characters instead of bytes. Patch by Craig Holmquist and SSE4.

Misc/NEWS.d/next/Windows/2018-02-10-15-38-19.bpo-32370.kcKuct.rst

-Use the correct encoding for ipconfig output in the uuid module.
-Patch by Segev Finer.

Misc/NEWS.d/next/Windows/2018-02-19-08-54-06.bpo-32457.vVP0Iz.rst

-Improves handling of denormalized executable path when launching Python.

Misc/NEWS.d/next/Windows/2018-02-19-10-00-57.bpo-32409.nocuDg.rst

-Ensures activate.bat can handle Unicode contents.

Misc/NEWS.d/next/Windows/2018-02-19-13-54-42.bpo-31966._Q3HPb.rst

-Fixed WindowsConsoleIO.write() for writing empty data.

Misc/NEWS.d/next/Windows/2018-02-23-00-47-13.bpo-32901.mGKz5_.rst

-Update Tcl and Tk versions to 8.6.8

Misc/NEWS.d/next/Windows/2018-02-28-11-03-24.bpo-32903.1SXY4t.rst

-Fix a memory leak in os.chdir() on Windows if the current directory is set
-to a UNC path.

Misc/NEWS.d/next/Windows/2018-03-07-01-33-33.bpo-33016.Z_Med0.rst

-Fix potential use of uninitialized memory in nt._getfinalpathname

Misc/NEWS.d/next/Windows/2018-03-08-20-02-38.bpo-32890.3jzFzY.rst

-Fix usage of GetLastError() instead of errno in os.execve() and
-os.truncate().

Misc/NEWS.d/next/Windows/2018-04-13-11-28-55.bpo-33184.7YhqQE.rst

-Update Windows installer to use OpenSSL 1.1.0h.

Misc/NEWS.d/next/Windows/2018-04-20-03-24-07.bpo-33316.9IiJ8J.rst

-PyThread_release_lock always fails

Misc/NEWS.d/next/Windows/2018-05-16-11-31-17.bpo-29097.9mqEuI.rst

-Fix bug where :meth:`datetime.fromtimestamp` erroneously throws an
-:exc:`OSError` on Windows for values between 0 and 86400.
-Patch by Ammar Askar.

Misc/NEWS.d/next/Windows/2018-06-04-09-20-53.bpo-33720.VKDXHK.rst

-Reduces maximum marshal recursion depth on release builds.

Misc/NEWS.d/next/Windows/2018-06-19-11-57-50.bpo-33895.zpblTy.rst

-GIL is released while calling functions that acquire Windows loader lock.

Misc/NEWS.d/next/Windows/2018-06-25-09-33-48.bpo-30237.EybiZA.rst

-Output error when ReadConsole is canceled by CancelSynchronousIo instead of
-crashing.

Misc/NEWS.d/next/Windows/2018-06-27-23-33-54.bpo-31546.zJlap-.rst

-Restore running PyOS_InputHook while waiting for user input at the prompt.
-The restores integration of interactive GUI windows (such as Matplotlib
-figures) with the prompt on Windows.

Misc/NEWS.d/next/Windows/2018-07-02-14-19-32.bpo-34006.7SgBT_.rst

-Revert line length limit for Windows help docs. The line-length limit is not
-needed because the pages appear in a separate app rather than on a browser
-tab.  It can also interact badly with the DPI setting.

Misc/NEWS.d/next/Windows/2018-07-11-15-58-06.bpo-34011.Ho_d5T.rst

-A suite of code has been changed which copied across DLLs and init.tcl from
-the running Python location into a venv being created. These copies are needed
-only when running from a Python source build, and the copying code is now only
-run when that is the case, rather than whenever a venv is created.

Misc/NEWS.d/next/Windows/2018-07-25-16-13-12.bpo-34225.ngemNL.rst

-Ensure INCLUDE and LIB directories do not end with a backslash.

Misc/NEWS.d/next/Windows/2018-08-21-19-28-23.bpo-34062.3gxsA3.rst

-Fixed the '--list' and '--list-paths' arguments for the py.exe launcher

Misc/NEWS.d/next/Windows/2018-09-03-01-23-52.bpo-34532.N1HEbE.rst

-Fixes exit code of list version arguments for py.exe.

Misc/NEWS.d/next/Windows/2018-09-04-23-13-19.bpo-34581.lnbC0k.rst

-Guard MSVC-specific code in socketmodule.c with ``#ifdef _MSC_VER``.

Misc/NEWS.d/next/Windows/2018-09-13-08-29-04.bpo-34603.2AB7sc.rst

-Fix returning structs from functions produced by MSVC

Misc/NEWS.d/next/Windows/2018-09-22-11-02-35.bpo-34770.4lEUOd.rst

-Fix a possible null pointer dereference in pyshellext.cpp.

Misc/NEWS.d/next/Windows/2018-09-25-10-39-27.bpo-32557.Rs1bf9.rst

-Allow shutil.disk_usage to take a file path on Windows

Misc/NEWS.d/next/Windows/2018-10-25-11-29-22.bpo-35067.RHWi7W.rst

-Remove _distutils_findvs module and use vswhere.exe instead.

Misc/NEWS.d/next/Windows/2018-10-30-13-39-17.bpo-34977.0l7_QV.rst

-Adds support for building a Windows App Store package

Misc/NEWS.d/next/Windows/2018-12-07-10-00-38.bpo-34977.agQJbD.rst

-venv on Windows will now use a python.exe redirector rather than copying the
-actual binaries from the base environment.

Misc/NEWS.d/next/Windows/2018-12-10-15-01-13.bpo-35401.9L1onG.rst

-Updates Windows build to OpenSSL 1.1.0j

Misc/NEWS.d/next/Windows/2018-12-13-13-30-04.bpo-35402.n_mXb2.rst

-Update Windows build to use Tcl and Tk 8.6.9

Misc/NEWS.d/next/Windows/2018-12-28-07-25-47.bpo-35596.P9CEY2.rst

-Fix vcruntime140.dll being added to embeddable distro multiple times.

Misc/NEWS.d/next/Windows/2019-01-08-13-56-01.bpo-35596.oFvhcm.rst

-Use unchecked PYCs for the embeddable distro to avoid zipimport
-restrictions.

Misc/NEWS.d/next/Windows/2019-01-12-16-52-38.bpo-29734.6_OJwI.rst

-Fix handle leaks in os.stat on Windows.
\ No newline at end of file

Misc/NEWS.d/next/Windows/2019-01-21-05-18-14.bpo-35758.8LsY3l.rst

-Allow building on ARM with MSVC.

Misc/NEWS.d/next/Windows/2019-01-25-12-29-14.bpo-35797.MzyOK9.rst

-Fix default executable used by the multiprocessing module

Misc/NEWS.d/next/Windows/2019-01-25-12-46-36.bpo-35811.2hU-mm.rst

-Avoid propagating venv settings when launching via py.exe

Misc/NEWS.d/next/Windows/2019-01-29-15-44-46.bpo-35854.Ww3z19.rst

-Fix EnvBuilder and --symlinks in venv on Windows

Misc/NEWS.d/next/Windows/2019-02-02-11-02-44.bpo-32560.I5WAGW.rst

-The ``py`` launcher now forwards its ``STARTUPINFO`` structure to child
-processes.

Misc/NEWS.d/next/Windows/2019-02-02-22-12-23.bpo-35890.ccIjHH.rst

-Fix API calling consistency of GetVersionEx and wcstok.
\ No newline at end of file

Misc/NEWS.d/next/macOS/2017-11-01-16-53-12.bpo-31903.K6jCVG.rst

-In :mod:`_scproxy`, drop the GIL when calling into ``SystemConfiguration`` to avoid
-deadlocks.

Misc/NEWS.d/next/macOS/2018-02-27-17-33-15.bpo-32901.hQu0w3.rst

-Update macOS 10.9+ installer to Tcl/Tk 8.6.8.

Misc/NEWS.d/next/macOS/2018-03-29-06-56-12.bpo-32726.urS9uX.rst

-Build and link with private copy of Tcl/Tk 8.6 for the macOS 10.6+
-installer. The 10.9+ installer variant already does this.  This means that
-the Python 3.7 provided by the python.org macOS installers no longer need or
-use any external versions of Tcl/Tk, either system-provided or
-user-installed, such as ActiveTcl.

Misc/NEWS.d/next/macOS/2018-04-07-00-51-34.bpo-33184.3j208P.rst

-Update macOS installer build to use OpenSSL 1.1.0h.

Misc/NEWS.d/next/macOS/2018-05-16-13-25-58.bpo-13631.UIjDyY.rst

-The .editrc file in user's home directory is now processed correctly during
-the readline initialization through editline emulation on macOS.

Misc/NEWS.d/next/macOS/2018-07-31-09-51-01.bpo-33635.KiscE-.rst

-In macOS stat on some file descriptors (/dev/fd/3 f.e) will result in bad
-file descriptor OSError. Guard against this exception was added in is_dir,
-is_file and similar methods. DirEntry.is_dir can also throw this exception
-so _RecursiveWildcardSelector._iterate_directories was also extended with
-the same error ignoring pattern.

Misc/NEWS.d/next/macOS/2018-09-11-08-30-55.bpo-34405.UzIi0n.rst

-Update to OpenSSL 1.1.0i for macOS installer builds.

Misc/NEWS.d/next/macOS/2018-10-17-14-36-08.bpo-24658.Naddgx.rst

-On macOS, fix reading from and writing into a file with a size larger than 2 GiB.
\ No newline at end of file

Misc/NEWS.d/next/macOS/2018-10-18-23-54-55.bpo-35025.X4LFJg.rst

-Properly guard the use of the ``CLOCK_GETTIME`` et al. macros in ``timemodule``
-on macOS.

Misc/NEWS.d/next/macOS/2018-12-09-13-56-49.bpo-35401.n8B7X1.rst

-Update macOS installer to use OpenSSL 1.1.0j.

Misc/NEWS.d/next/macOS/2018-12-21-18-44-30.bpo-35555.M58_K3.rst

-Gray out Code Context menu entry when it's not applicable.