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+.. bpo: 36052
+.. date: 2019-02-20-17-57-31
+.. nonce: l8lJSi
+.. release date: 2019-02-25
+.. section: Core and Builtins
+
+Raise a :exc:`SyntaxError` when assigning a value to `__debug__` with the
+Assignment Operator. Contributed by Stéphane Wirtel and Pablo Galindo.
+
+..
+
+.. bpo: 36012
+.. date: 2019-02-19-10-47-51
+.. nonce: xq7C9E
+.. section: Core and Builtins
+
+Doubled the speed of class variable writes.  When a non-dunder attribute was
+updated, there was an unnecessary call to update slots.
+
+..
+
+.. bpo: 35942
+.. date: 2019-02-18-09-30-55
+.. nonce: oLhL2v
+.. section: Core and Builtins
+
+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.
+
+..
+
+.. bpo: 36016
+.. date: 2019-02-17-20-23-54
+.. nonce: 5Hns-f
+.. section: Core and Builtins
+
+``gc.get_objects`` can now receive an optional parameter indicating a
+generation to get objects from. Patch by Pablo Galindo.
+
+..
+
+.. bpo: 1054041
+.. date: 2019-02-16-00-42-32
+.. nonce: BL-WLd
+.. section: Core and Builtins
+
+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.
+
+..
+
+.. bpo: 35992
+.. date: 2019-02-14-12-01-44
+.. nonce: nG9e2L
+.. section: Core and Builtins
+
+Fix ``__class_getitem__()`` not being called on a class with a custom
+non-subscriptable metaclass.
+
+..
+
+.. bpo: 35993
+.. date: 2019-02-14-09-17-54
+.. nonce: Bvm3fP
+.. section: Core and Builtins
+
+Fix a crash on fork when using subinterpreters. Contributed by Stéphane
+Wirtel
+
+..
+
+.. bpo: 35991
+.. date: 2019-02-14-00-00-30
+.. nonce: xlbfSk
+.. section: Core and Builtins
+
+Fix a potential double free in Modules/_randommodule.c.
+
+..
+
+.. bpo: 35961
+.. date: 2019-02-12-20-16-34
+.. nonce: 7f7Sne
+.. section: Core and Builtins
+
+Fix a crash in slice_richcompare(): use strong references rather than stolen
+references for the two temporary internal tuples.
+
+..
+
+.. bpo: 35911
+.. date: 2019-02-06-17-50-59
+.. nonce: oiWE8
+.. section: Core and Builtins
+
+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.
+
+..
+
+.. bpo: 12822
+.. date: 2019-02-05-12-48-23
+.. nonce: 0x2NDx
+.. section: Core and Builtins
+
+Use monotonic clock for ``pthread_cond_timedwait`` when
+``pthread_condattr_setclock`` and ``CLOCK_MONOTONIC`` are available.
+
+..
+
+.. bpo: 15248
+.. date: 2019-02-04-21-10-17
+.. nonce: 2sXSZZ
+.. section: Core and Builtins
+
+The compiler emits now syntax warnings in the case when a comma is likely
+missed before tuple or list.
+
+..
+
+.. bpo: 35886
+.. date: 2019-02-01-18-12-14
+.. nonce: 0Z-C0V
+.. section: Core and Builtins
+
+The implementation of PyInterpreterState has been moved into the internal
+header files (guarded by Py_BUILD_CORE).
+
+..
+
+.. bpo: 31506
+.. date: 2019-01-22-02-06-39
+.. nonce: eJ5FpV
+.. section: Core and Builtins
+
+Clarify the errors reported when ``object.__new__`` and ``object.__init__``
+receive more than one argument. Contributed by Sanyam Khurana.
+
+..
+
+.. bpo: 35724
+.. date: 2019-01-11-14-46-08
+.. nonce: Wv79MG
+.. section: Core and Builtins
+
+Signal-handling is now guaranteed to happen relative to the main
+interpreter.
+
+..
+
+.. bpo: 33608
+.. date: 2018-09-15-12-13-46
+.. nonce: avmvVP
+.. section: Core and Builtins
+
+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.
+
+..
+
+.. bpo: 33989
+.. date: 2018-08-08-20-52-55
+.. nonce: TkLBui
+.. section: Core and Builtins
+
+Fix a possible crash in :meth:`list.sort` when sorting objects with
+``ob_type->tp_richcompare == NULL``.  Patch by Zackery Spytz.
+
+..
+
+.. bpo: 35512
+.. date: 2019-02-24-00-04-10
+.. nonce: eWDjCJ
+.. section: Library
+
+: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.
+
+..
+
+.. bpo: 36018
+.. date: 2019-02-21-15-47-00
+.. nonce: qt7QUe
+.. section: Library
+
+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.
+
+..
+
+.. bpo: 35904
+.. date: 2019-02-16-00-55-52
+.. nonce: V88MCD
+.. section: Library
+
+Added statistics.fmean() as a faster, floating point variant of the existing
+mean() function.
+
+..
+
+.. bpo: 35918
+.. date: 2019-02-11-16-23-10
+.. nonce: oGDlpT
+.. section: Library
+
+Removed broken ``has_key`` method from
+multiprocessing.managers.SyncManager.dict. Contributed by Rémi Lapeyre.
+
+..
+
+.. bpo: 18283
+.. date: 2019-02-11-09-24-08
+.. nonce: BT3Jhc
+.. section: Library
+
+Add support for bytes to :func:`shutil.which`.
+
+..
+
+.. bpo: 35960
+.. date: 2019-02-10-20-57-12
+.. nonce: bh-6Ja
+.. section: Library
+
+Fix :func:`dataclasses.field` throwing away empty mapping objects passed as
+metadata.
+
+..
+
+.. bpo: 35500
+.. date: 2019-02-10-00-00-13
+.. nonce: 1HOMmo
+.. section: Library
+
+Write expected and actual call parameters on separate lines in
+:meth:`unittest.mock.Mock.assert_called_with` assertion errors.  Contributed
+by Susan Su.
+
+..
+
+.. bpo: 35931
+.. date: 2019-02-07-16-22-50
+.. nonce: _63i7B
+.. section: Library
+
+The :mod:`pdb` ``debug`` command now gracefully handles syntax errors.
+
+..
+
+.. bpo: 24209
+.. date: 2019-02-06-01-40-55
+.. nonce: awtwPD
+.. section: Library
+
+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.
+
+..
+
+.. bpo: 35321
+.. date: 2019-02-02-01-53-36
+.. nonce: 1Y4DU4
+.. section: Library
+
+Set ``__spec__.origin`` of  ``_frozen_importlib`` to frozen so that it
+matches the behavior of ``_frozen_importlib_external``.  Patch by Nina
+Zakharenko.
+
+..
+
+.. bpo: 35378
+.. date: 2019-01-21-02-15-20
+.. nonce: 4oF03i
+.. section: Library
+
+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.
+
+..
+
+.. bpo: 34294
+.. date: 2019-01-14-11-53-10
+.. nonce: 3JFdg2
+.. section: Library
+
+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.
+
+..
+
+.. bpo: 35615
+.. date: 2018-12-30-20-00-05
+.. nonce: Uz1SVh
+.. section: Library
+
+:mod:`weakref`: Fix a RuntimeError when copying a WeakKeyDictionary or a
+WeakValueDictionary, due to some keys or values disappearing while
+iterating.
+
+..
+
+.. bpo: 35606
+.. date: 2018-12-29-21-59-03
+.. nonce: NjGjou
+.. section: Library
+
+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.
+
+..
+
+.. bpo: 32417
+.. date: 2018-12-04-13-35-36
+.. nonce: _Y9SKM
+.. section: Library
+
+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.
+
+..
+
+.. bpo: 35153
+.. date: 2018-11-03-12-38-03
+.. nonce: 009pdF
+.. section: Library
+
+Add *headers* optional keyword-only parameter to
+:class:`xmlrpc.client.ServerProxy`, :class:`xmlrpc.client.Transport` and
+:class:`xmlrpc.client.SafeTransport`.  Patch by Cédric Krier.
+
+..
+
+.. bpo: 34572
+.. date: 2018-09-05-03-02-32
+.. nonce: ayisd2
+.. section: Library
+
+Fix C implementation of pickle.loads to use importlib's locking mechanisms,
+and thereby avoid using partially-loaded modules. Patch by Tim Burgess.
+
+..
+
+.. bpo: 36083
+.. date: 2019-02-24-12-40-13
+.. nonce: JX7zbv
+.. section: Documentation
+
+Fix formatting of --check-hash-based-pycs options in the manpage Synopsis.
+
+..
+
+.. bpo: 36007
+.. date: 2019-02-15-15-33-41
+.. nonce: OTFrza
+.. section: Documentation
+
+Bump minimum sphinx version to 1.8.  Patch by Anthony Sottile.
+
+..
+
+.. bpo: 22062
+.. date: 2018-07-28-12-41-01
+.. nonce: TaN2hn
+.. section: Documentation
+
+Update documentation and docstrings for pathlib. Original patch by Mike
+Short.
+
+..
+
+.. bpo: 27313
+.. date: 2019-02-24-01-58-38
+.. nonce: Sj9veH
+.. section: Tests
+
+Avoid test_ttk_guionly ComboboxTest failure with macOS Cocoa Tk.
+
+..
+
+.. bpo: 36019
+.. date: 2019-02-21-14-23-51
+.. nonce: zS_OUi
+.. section: Tests
+
+Add test.support.TEST_HTTP_URL and replace references of
+http://www.example.com by this new constant. Contributed by Stéphane Wirtel.
+
+..
+
+.. bpo: 36037
+.. date: 2019-02-19-15-21-14
+.. nonce: 75wG9_
+.. section: Tests
+
+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.
+
+..
+
+.. bpo: 35798
+.. date: 2019-02-16-15-19-31
+.. nonce: JF16MP
+.. section: Tests
+
+Added :func:`test.support.check_syntax_warning`.
+
+..
+
+.. bpo: 35505
+.. date: 2019-02-12-01-33-08
+.. nonce: N9ba_K
+.. section: Tests
+
+Make test_imap4_host_default_value independent on whether the local IMAP
+server is running.
+
+..
+
+.. bpo: 35917
+.. date: 2019-02-06-18-06-16
+.. nonce: -Clv1L
+.. section: Tests
+
+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)
+
+..
+
+.. bpo: 35704
+.. date: 2019-01-10-09-14-58
+.. nonce: FLglYo
+.. section: Tests
+
+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)
+
+..
+
+.. bpo: 34720
+.. date: 2018-12-26-12-31-16
+.. nonce: T268vz
+.. section: Tests
+
+Assert m_state != NULL to mimic GC traversal functions that do not correctly
+handle module creation when the module state has not been created.
+
+..
+
+.. bpo: 35976
+.. date: 2019-02-11-20-07-43
+.. nonce: toap7O
+.. section: Windows
+
+Added ARM build support to Windows build files in PCBuild.
+
+..
+
+.. bpo: 35692
+.. date: 2019-02-02-16-23-57
+.. nonce: cIiiE9
+.. section: Windows
+
+``pathlib`` no longer raises when checking file and directory existence on
+drives that are not ready
+
+..
+
+.. bpo: 35872
+.. date: 2019-02-02-15-57-19
+.. nonce: Bba2n7
+.. section: Windows
+
+Uses the base Python executable when invoking venv in a virtual environment
+
+..
+
+.. bpo: 35873
+.. date: 2019-02-02-15-56-50
+.. nonce: UW-qS9
+.. section: Windows
+
+Prevents venv paths being inherited by child processes
+
+..
+
+.. bpo: 35299
+.. date: 2019-02-02-14-47-12
+.. nonce: 1rgEzd
+.. section: Windows
+
+Fix sysconfig detection of the source directory and distutils handling of
+pyconfig.h during PGO profiling
+
+..
+
+.. bpo: 24310
+.. date: 2019-02-23-22-31-20
+.. nonce: j_vJQl
+.. section: IDLE
+
+IDLE -- Document settings dialog font tab sample.
+
+..
+
+.. bpo: 35833
+.. date: 2019-02-08-22-14-24
+.. nonce: XKFRvF
+.. section: IDLE
+
+Revise IDLE doc for control codes sent to Shell. Add a code example block.
+
+..
+
+.. bpo: 35689
+.. date: 2019-01-08-17-51-44
+.. nonce: LlaqR8
+.. section: IDLE
+
+Add docstrings and unittests for colorizer.py.