Merge tag 'v3.8.0a2'

Python 3.8.0a2

Include/patchlevel.h

@@ -20,10 +20,10 @@
 #define PY_MINOR_VERSION        8
 #define PY_MICRO_VERSION        0
 #define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_ALPHA
-#define PY_RELEASE_SERIAL       1
+#define PY_RELEASE_SERIAL       2
 
 /* Version as a string */
-#define PY_VERSION              "3.8.0a1+"
+#define PY_VERSION              "3.8.0a2"
 /*--end constants--*/
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.

Lib/pydoc_data/topics.py

 # -*- coding: utf-8 -*-
-# Autogenerated by Sphinx on Sun Feb  3 14:00:19 2019
+# Autogenerated by Sphinx on Mon Feb 25 13:03:43 2019
 topics = {'assert': 'The "assert" statement\n'
            '**********************\n'
            '\n'
@@ -962,7 +962,8 @@ topics = {'assert': 'The "assert" statement\n'
                      'in a parent.)\n'
                      '\n'
                      'The space saved over using *__dict__* can be '
-                     'significant.\n'
+                     'significant. Attribute\n'
+                     'lookup speed can be significantly improved as well.\n'
                      '\n'
                      'object.__slots__\n'
                      '\n'
@@ -8572,7 +8573,9 @@ topics = {'assert': 'The "assert" statement\n'
                  '(unless explicitly declared in *__slots__* or available in a '
                  'parent.)\n'
                  '\n'
-                 'The space saved over using *__dict__* can be significant.\n'
+                 'The space saved over using *__dict__* can be significant. '
+                 'Attribute\n'
+                 'lookup speed can be significantly improved as well.\n'
                  '\n'
                  'object.__slots__\n'
                  '\n'
@@ -11394,7 +11397,8 @@ topics = {'assert': 'The "assert" statement\n'
           '      Additional information about a function’s definition can be\n'
           '      retrieved from its code object; see the description of '
           'internal\n'
-          '      types below.\n'
+          '      types below. The "cell" type can be accessed in the "types"\n'
+          '      module.\n'
           '\n'
           '   Instance methods\n'
           '      An instance method object combines a class, a class instance '

Misc/NEWS.d/next/Core and Builtins/2018-08-08-20-52-55.bpo-33989.TkLBui.rst

-Fix a possible crash in :meth:`list.sort` when sorting objects with
-``ob_type->tp_richcompare == NULL``.  Patch by Zackery Spytz.

Misc/NEWS.d/next/Core and Builtins/2018-09-15-12-13-46.bpo-33608.avmvVP.rst

-We added a new internal _Py_AddPendingCall() that operates relative to the
-provided interpreter.  This allows us to use the existing implementation to
-ask another interpreter to do work that cannot be done in the current
-interpreter, like decref an object the other interpreter owns.  The existing
-Py_AddPendingCall() only operates relative to the main interpreter.

Misc/NEWS.d/next/Core and Builtins/2019-01-11-14-46-08.bpo-35724.Wv79MG.rst

-Signal-handling is now guaranteed to happen relative to the main
-interpreter.

Misc/NEWS.d/next/Core and Builtins/2019-01-22-02-06-39.bpo-31506.eJ5FpV.rst

-Clarify the errors reported when ``object.__new__`` and ``object.__init__``
-receive more than one argument.
-Contributed by Sanyam Khurana.

Misc/NEWS.d/next/Core and Builtins/2019-02-01-18-12-14.bpo-35886.0Z-C0V.rst

-The implementation of PyInterpreterState has been moved into the internal
-header files (guarded by Py_BUILD_CORE).

Misc/NEWS.d/next/Core and Builtins/2019-02-04-21-10-17.bpo-15248.2sXSZZ.rst

-The compiler emits now syntax warnings in the case when a comma is likely
-missed before tuple or list.

Misc/NEWS.d/next/Core and Builtins/2019-02-05-12-48-23.bpo-12822.0x2NDx.rst

-Use monotonic clock for ``pthread_cond_timedwait`` when
-``pthread_condattr_setclock`` and ``CLOCK_MONOTONIC`` are available.

Misc/NEWS.d/next/Core and Builtins/2019-02-06-17-50-59.bpo-35911.oiWE8.rst

-Enable the creation of cell objects by adding a ``cell.__new__`` method, and
-expose the type ``cell`` in ``Lib/types.py`` under the name CellType. Patch by
-Pierre Glaser.

Misc/NEWS.d/next/Core and Builtins/2019-02-12-20-16-34.bpo-35961.7f7Sne.rst

-Fix a crash in slice_richcompare(): use strong references rather than stolen
-references for the two temporary internal tuples.

Misc/NEWS.d/next/Core and Builtins/2019-02-14-00-00-30.bpo-35991.xlbfSk.rst

-Fix a potential double free in Modules/_randommodule.c.

Misc/NEWS.d/next/Core and Builtins/2019-02-14-09-17-54.bpo-35993.Bvm3fP.rst

-Fix a crash on fork when using subinterpreters. Contributed by Stéphane Wirtel

Misc/NEWS.d/next/Core and Builtins/2019-02-14-12-01-44.bpo-35992.nG9e2L.rst

-Fix ``__class_getitem__()`` not being called on a class with a custom
-non-subscriptable metaclass.

Misc/NEWS.d/next/Core and Builtins/2019-02-16-00-42-32.bpo-1054041.BL-WLd.rst

-When the main interpreter exits due to an uncaught KeyboardInterrupt, the process now exits in the appropriate manner for its parent process to detect that a SIGINT or ^C terminated the process.  This allows shells and batch scripts to understand that the user has asked them to stop.
\ No newline at end of file

Misc/NEWS.d/next/Core and Builtins/2019-02-17-20-23-54.bpo-36016.5Hns-f.rst

-``gc.get_objects`` can now receive an optional parameter indicating a
-generation to get objects from. Patch by Pablo Galindo.

Misc/NEWS.d/next/Core and Builtins/2019-02-18-09-30-55.bpo-35942.oLhL2v.rst

-The error message emmited when returning invalid types from ``__fspath__``
-in interfaces that allow passing :class:`~os.PathLike` objects has been
-improved and now it does explain the origin of the error.

Misc/NEWS.d/next/Core and Builtins/2019-02-19-10-47-51.bpo-36012.xq7C9E.rst

-Doubled the speed of class variable writes.  When a non-dunder attribute was
-updated, there was an unnecessary call to update slots.

Misc/NEWS.d/next/Core and Builtins/2019-02-20-17-57-31.bpo-36052.l8lJSi.rst

-Raise a :exc:`SyntaxError` when assigning a value to `__debug__` with the
-Assignment Operator. Contributed by Stéphane Wirtel and Pablo Galindo.

Misc/NEWS.d/next/Documentation/2018-07-28-12-41-01.bpo-22062.TaN2hn.rst

-Update documentation and docstrings for pathlib. Original patch by Mike Short.

Misc/NEWS.d/next/Documentation/2019-02-15-15-33-41.bpo-36007.OTFrza.rst

-Bump minimum sphinx version to 1.8.  Patch by Anthony Sottile.

Misc/NEWS.d/next/Documentation/2019-02-24-12-40-13.bpo-36083.JX7zbv.rst

-Fix formatting of --check-hash-based-pycs options in the manpage Synopsis.

Misc/NEWS.d/next/IDLE/2019-01-08-17-51-44.bpo-35689.LlaqR8.rst

-Add docstrings and unittests for colorizer.py.

Misc/NEWS.d/next/IDLE/2019-02-08-22-14-24.bpo-35833.XKFRvF.rst

-Revise IDLE doc for control codes sent to Shell. Add a code example block.

Misc/NEWS.d/next/IDLE/2019-02-23-22-31-20.bpo-24310.j_vJQl.rst

-IDLE -- Document settings dialog font tab sample.

Misc/NEWS.d/next/Library/2018-09-05-03-02-32.bpo-34572.ayisd2.rst

-Fix C implementation of pickle.loads to use importlib's locking
-mechanisms, and thereby avoid using partially-loaded modules.
-Patch by Tim Burgess.

Misc/NEWS.d/next/Library/2018-11-03-12-38-03.bpo-35153.009pdF.rst

-Add *headers* optional keyword-only parameter to
-:class:`xmlrpc.client.ServerProxy`, :class:`xmlrpc.client.Transport` and
-:class:`xmlrpc.client.SafeTransport`.  Patch by Cédric Krier.

Misc/NEWS.d/next/Library/2018-12-04-13-35-36.bpo-32417._Y9SKM.rst

-Performing arithmetic between :class:`datetime.datetime` subclasses and
-:class:`datetime.timedelta` now returns an object of the same type as the
-:class:`datetime.datetime` subclass. As a result,
-:meth:`datetime.datetime.astimezone` and alternate constructors like
-:meth:`datetime.datetime.now` and :meth:`datetime.fromtimestamp` called with
-a ``tz`` argument now *also* retain their subclass.

Misc/NEWS.d/next/Library/2018-12-29-21-59-03.bpo-35606.NjGjou.rst

-Implement :func:`math.prod` as analogous function to :func:`sum` that
-returns the product of a 'start' value (default: 1) times an iterable of
-numbers. Patch by Pablo Galindo.

Misc/NEWS.d/next/Library/2018-12-30-20-00-05.bpo-35615.Uz1SVh.rst

-:mod:`weakref`: Fix a RuntimeError when copying a WeakKeyDictionary or a
-WeakValueDictionary, due to some keys or values disappearing while
-iterating.

Misc/NEWS.d/next/Library/2019-01-14-11-53-10.bpo-34294.3JFdg2.rst

-re module, fix wrong capturing groups in rare cases. :func:`re.search`,
-:func:`re.findall`, :func:`re.sub` and other functions that scan through
-string looking for a match, should reset capturing groups between two match
-attempts. Patch by Ma Lin.
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-01-21-02-15-20.bpo-35378.4oF03i.rst

-Fix a reference issue inside :class:`multiprocessing.Pool` that caused
-the pool to remain alive if it was deleted without being closed or
-terminated explicitly. A new strong reference is added to the pool
-iterators to link the lifetime of the pool to the lifetime of its
-iterators so the pool does not get destroyed if a pool iterator is
-still alive.

Misc/NEWS.d/next/Library/2019-02-02-01-53-36.bpo-35321.1Y4DU4.rst

-Set ``__spec__.origin`` of  ``_frozen_importlib`` to frozen so that it matches the behavior of ``_frozen_importlib_external``.  Patch by Nina Zakharenko.
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-02-06-01-40-55.bpo-24209.awtwPD.rst

-In http.server script, rely on getaddrinfo to bind to preferred address based on the bind parameter. Now default bind or binding to a name may bind to IPv6 or dual-stack, depending on the environment.
\ No newline at end of file

Misc/NEWS.d/next/Library/2019-02-07-16-22-50.bpo-35931._63i7B.rst

-The :mod:`pdb` ``debug`` command now gracefully handles syntax errors.

Misc/NEWS.d/next/Library/2019-02-10-00-00-13.bpo-35500.1HOMmo.rst

-Write expected and actual call parameters on separate lines in :meth:`unittest.mock.Mock.assert_called_with` assertion errors.  Contributed by Susan Su.

Misc/NEWS.d/next/Library/2019-02-10-20-57-12.bpo-35960.bh-6Ja.rst

-Fix :func:`dataclasses.field` throwing away empty mapping objects passed as
-metadata.

Misc/NEWS.d/next/Library/2019-02-11-09-24-08.bpo-18283.BT3Jhc.rst

-Add support for bytes to :func:`shutil.which`.

Misc/NEWS.d/next/Library/2019-02-11-16-23-10.bpo-35918.oGDlpT.rst

-Removed broken ``has_key`` method from
-multiprocessing.managers.SyncManager.dict. Contributed by Rémi Lapeyre.

Misc/NEWS.d/next/Library/2019-02-16-00-55-52.bpo-35904.V88MCD.rst

-Added statistics.fmean() as a faster, floating point variant of the existing
-mean() function.

Misc/NEWS.d/next/Library/2019-02-21-15-47-00.bpo-36018.qt7QUe.rst

-Add statistics.NormalDist, a tool for creating and manipulating normal
-distributions of random variable.  Features a composite class that treats
-the mean and standard deviation of measurement data as single entity.

Misc/NEWS.d/next/Library/2019-02-24-00-04-10.bpo-35512.eWDjCJ.rst

-:func:`unittest.mock.patch.dict` used as a decorator with string target
-resolves the target during function call instead of during decorator
-construction. Patch by Karthikeyan Singaravelan.

Misc/NEWS.d/next/Tests/2018-12-26-12-31-16.bpo-34720.T268vz.rst

-Assert m_state != NULL to mimic GC traversal functions that do not correctly
-handle module creation when the module state has not been created.

Misc/NEWS.d/next/Tests/2019-01-10-09-14-58.bpo-35704.FLglYo.rst

-Skip ``test_shutil.test_unpack_archive_xztar`` to prevent a MemoryError
-on 32-bit AIX when MAXDATA setting is less than 0x20000000.
-
-Patch by Michael Felt (aixtools)

Misc/NEWS.d/next/Tests/2019-02-06-18-06-16.bpo-35917.-Clv1L.rst

-multiprocessing: provide unit tests for SyncManager and SharedMemoryManager
-classes + all the shareable types which are supposed to be supported by
-them.  (patch by Giampaolo Rodola)

Misc/NEWS.d/next/Tests/2019-02-12-01-33-08.bpo-35505.N9ba_K.rst

-Make test_imap4_host_default_value independent on whether the 
-local IMAP server is running.

Misc/NEWS.d/next/Tests/2019-02-16-15-19-31.bpo-35798.JF16MP.rst

-Added :func:`test.support.check_syntax_warning`.

Misc/NEWS.d/next/Tests/2019-02-19-15-21-14.bpo-36037.75wG9_.rst

-Fix test_ssl for strict OpenSSL configuration like RHEL8 strict crypto policy.
-Use older TLS version for minimum TLS version of the server SSL context if
-needed, to test TLS version older than default minimum TLS version.

Misc/NEWS.d/next/Tests/2019-02-21-14-23-51.bpo-36019.zS_OUi.rst

-Add test.support.TEST_HTTP_URL and replace references of http://www.example.com
-by this new constant. Contributed by Stéphane Wirtel.

Misc/NEWS.d/next/Tests/2019-02-24-01-58-38.bpo-27313.Sj9veH.rst

-Avoid test_ttk_guionly ComboboxTest failure with macOS Cocoa Tk.

Misc/NEWS.d/next/Windows/2019-02-02-14-47-12.bpo-35299.1rgEzd.rst

-Fix sysconfig detection of the source directory and distutils handling of
-pyconfig.h during PGO profiling

Misc/NEWS.d/next/Windows/2019-02-02-15-56-50.bpo-35873.UW-qS9.rst

-Prevents venv paths being inherited by child processes

Misc/NEWS.d/next/Windows/2019-02-02-15-57-19.bpo-35872.Bba2n7.rst

-Uses the base Python executable when invoking venv in a virtual environment

Misc/NEWS.d/next/Windows/2019-02-02-16-23-57.bpo-35692.cIiiE9.rst

-``pathlib`` no longer raises when checking file and directory existence on
-drives that are not ready

Misc/NEWS.d/next/Windows/2019-02-11-20-07-43.bpo-35976.toap7O.rst

-Added ARM build support to Windows build files in PCBuild.

README.rst

-This is Python version 3.8.0 alpha 1
+This is Python version 3.8.0 alpha 2
 ====================================
 
 .. image:: https://travis-ci.org/python/cpython.svg?branch=master