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+.. bpo: 36216
+.. date: 2019-03-06-09-38-40
+.. nonce: 6q1m4a
+.. release date: 2019-03-25
+.. section: Security
+
+Changes urlsplit() to raise ValueError when the URL contains characters that
+decompose under IDNA encoding (NFKC-normalization) into characters that
+affect how the URL is parsed.
+
+..
+
+.. bpo: 35121
+.. date: 2018-10-31-15-39-17
+.. nonce: EgHv9k
+.. section: Security
+
+Don't send cookies of domain A without Domain attribute to domain B when
+domain A is a suffix match of domain B while using a cookiejar with
+:class:`http.cookiejar.DefaultCookiePolicy` policy. Patch by Karthikeyan
+Singaravelan.
+
+..
+
+.. bpo: 36421
+.. date: 2019-03-24-21-33-22
+.. nonce: gJ2Pv9
+.. section: Core and Builtins
+
+Fix a possible double decref in _ctypes.c's ``PyCArrayType_new()``.
+
+..
+
+.. bpo: 36412
+.. date: 2019-03-23-19-51-09
+.. nonce: C7acGn
+.. section: Core and Builtins
+
+Fix a possible crash when creating a new dictionary.
+
+..
+
+.. bpo: 36398
+.. date: 2019-03-21-22-19-38
+.. nonce: B_jXGe
+.. section: Core and Builtins
+
+Fix a possible crash in ``structseq_repr()``.
+
+..
+
+.. bpo: 12477
+.. date: 2019-03-21-00-24-18
+.. nonce: OZHa0t
+.. section: Core and Builtins
+
+Fix bug in parsermodule when parsing a state in a DFA that has two or more
+arcs with labels of the same type. Patch by Pablo Galindo.
+
+..
+
+.. bpo: 36365
+.. date: 2019-03-19-15-58-23
+.. nonce: jHaErz
+.. section: Core and Builtins
+
+repr(structseq) is no longer limited to 512 bytes.
+
+..
+
+.. bpo: 36374
+.. date: 2019-03-19-15-46-42
+.. nonce: EWKMZE
+.. section: Core and Builtins
+
+Fix a possible null pointer dereference in ``merge_consts_recursive()``.
+Patch by Zackery Spytz.
+
+..
+
+.. bpo: 36236
+.. date: 2019-03-19-03-08-26
+.. nonce: 5qN9qK
+.. section: Core and Builtins
+
+At Python initialization, the current directory is no longer prepended to
+:data:`sys.path` if it has been removed.
+
+..
+
+.. bpo: 36352
+.. date: 2019-03-19-02-36-40
+.. nonce: qj2trz
+.. section: Core and Builtins
+
+Python initialization now fails with an error, rather than silently
+truncating paths, if a path is too long.
+
+..
+
+.. bpo: 36301
+.. date: 2019-03-19-00-54-31
+.. nonce: xvOCJb
+.. section: Core and Builtins
+
+Python initialization now fails if decoding ``pybuilddir.txt`` configuration
+file fails at startup.
+
+..
+
+.. bpo: 36333
+.. date: 2019-03-18-10-56-53
+.. nonce: 4dqemZ
+.. section: Core and Builtins
+
+Fix leak in _PyRuntimeState_Fini. Contributed by Stéphane Wirtel.
+
+..
+
+.. bpo: 36332
+.. date: 2019-03-18-09-27-54
+.. nonce: yEC-Vz
+.. section: Core and Builtins
+
+The builtin :func:`compile` can now handle AST objects that contain
+assignment expressions. Patch by Pablo Galindo.
+
+..
+
+.. bpo: 36282
+.. date: 2019-03-13-22-47-28
+.. nonce: zs7RKP
+.. section: Core and Builtins
+
+Improved error message for too much positional arguments in some builtin
+functions.
+
+..
+
+.. bpo: 30040
+.. date: 2019-03-11-22-30-56
+.. nonce: W9z8X7
+.. section: Core and Builtins
+
+New empty dict uses fewer memory for now.  It used more memory than empty
+dict created by ``dict.clear()``.  And empty dict creation and deletion is
+about 2x faster.  Patch by Inada Naoki.
+
+..
+
+.. bpo: 36262
+.. date: 2019-03-11-15-37-33
+.. nonce: v3N6Fz
+.. section: Core and Builtins
+
+Fix an unlikely memory leak on conversion from string to float in the
+function ``_Py_dg_strtod()`` used by ``float(str)``, ``complex(str)``,
+:func:`pickle.load`, :func:`marshal.load`, etc.
+
+..
+
+.. bpo: 36252
+.. date: 2019-03-09-15-47-05
+.. nonce: sCQFKq
+.. section: Core and Builtins
+
+Update Unicode databases to version 12.0.0.
+
+..
+
+.. bpo: 36218
+.. date: 2019-03-07-13-05-43
+.. nonce: dZemNt
+.. section: Core and Builtins
+
+Fix a segfault occuring when sorting a list of heterogeneous values. Patch
+contributed by Rémi Lapeyre and Elliot Gorokhovsky.
+
+..
+
+.. bpo: 36188
+.. date: 2019-03-04-18-05-31
+.. nonce: EuUZNz
+.. section: Core and Builtins
+
+Cleaned up left-over vestiges of Python 2 unbound method handling in method
+objects and documentation. Patch by Martijn Pieters
+
+..
+
+.. bpo: 36124
+.. date: 2019-03-01-13-48-01
+.. nonce: Blzxq1
+.. section: Core and Builtins
+
+Add a new interpreter-specific dict and expose it in the C-API via
+PyInterpreterState_GetDict().  This parallels PyThreadState_GetDict().
+However, extension modules should continue using PyModule_GetState() for
+their own internal per-interpreter state.
+
+..
+
+.. bpo: 35975
+.. date: 2019-02-27-16-49-08
+.. nonce: IescLY
+.. section: Core and Builtins
+
+Add a ``feature_version`` flag to ``ast.parse()`` (documented) and
+``compile()`` (hidden) that allows tweaking the parser to support older
+versions of the grammar. In particular, if ``feature_version`` is 5 or 6,
+the hacks for the ``async`` and ``await`` keyword from PEP 492 are
+reinstated. (For 7 or higher, these are unconditionally treated as keywords,
+but they are still special tokens rather than ``NAME`` tokens that the
+parser driver recognizes.)
+
+..
+
+.. bpo: 31904
+.. date: 2019-02-26-17-34-49
+.. nonce: R4KSj6
+.. section: Core and Builtins
+
+Use UTF-8 as the system encoding on VxWorks.
+
+..
+
+.. bpo: 36048
+.. date: 2019-02-20-08-51-04
+.. nonce: I3LJt9
+.. section: Core and Builtins
+
+The :meth:`~object.__index__` special method will be used instead of
+:meth:`~object.__int__` for implicit conversion of Python numbers to C
+integers.  Using the ``__int__()`` method in implicit conversions has been
+deprecated.
+
+..
+
+.. bpo: 11814
+.. date: 2019-02-11-00-50-03
+.. nonce: M12CMH
+.. section: Core and Builtins
+
+Retire pgen and use a modified version of pgen2 to generate the parser.
+Patch by Pablo Galindo.
+
+..
+
+.. bpo: 36401
+.. date: 2019-03-23-10-25-07
+.. nonce: hYpVBS
+.. section: Library
+
+The class documentation created by pydoc now has a separate section for
+readonly properties.
+
+..
+
+.. bpo: 36320
+.. date: 2019-03-18-01-08-14
+.. nonce: -06b9_
+.. section: Library
+
+The typing.NamedTuple() class has deprecated the _field_types attribute in
+favor of the __annotations__ attribute which carried the same information.
+Also, both attributes were converted from OrderedDict to a regular dict.
+
+..
+
+.. bpo: 34745
+.. date: 2019-03-17-16-43-29
+.. nonce: nOfm7_
+.. section: Library
+
+Fix :mod:`asyncio` ssl memory issues caused by circular references
+
+..
+
+.. bpo: 36324
+.. date: 2019-03-17-01-17-45
+.. nonce: dvNrRe
+.. section: Library
+
+Add method to statistics.NormalDist for computing the inverse cumulative
+normal distribution.
+
+..
+
+.. bpo: 36321
+.. date: 2019-03-16-13-40-59
+.. nonce: s6crQx
+.. section: Library
+
+collections.namedtuple() misspelled the name of an attribute.  To be
+consistent with typing.NamedTuple, the attribute name should have been
+"_field_defaults" instead of "_fields_defaults".  For backwards
+compatibility, both spellings are now created.  The misspelled version may
+be removed in the future.
+
+..
+
+.. bpo: 36297
+.. date: 2019-03-15-21-41-22
+.. nonce: Gz9ZfU
+.. section: Library
+
+"unicode_internal" codec is removed.  It was deprecated since Python 3.3.
+Patch by Inada Naoki.
+
+..
+
+.. bpo: 36298
+.. date: 2019-03-15-13-54-07
+.. nonce: amEVK2
+.. section: Library
+
+Raise ModuleNotFoundError in pyclbr when a module can't be found. Thanks to
+'mental' for the bug report.
+
+..
+
+.. bpo: 36268
+.. date: 2019-03-14-16-25-17
+.. nonce: MDXLw6
+.. section: Library
+
+Switch the default format used for writing tars with mod:`tarfile` to the
+modern POSIX.1-2001 pax standard, from the vendor-specific GNU. Contributed
+by C.A.M. Gerlach.
+
+..
+
+.. bpo: 36285
+.. date: 2019-03-14-01-09-59
+.. nonce: G-usj8
+.. section: Library
+
+Fix integer overflows in the array module. Patch by Stephan Hohe.
+
+..
+
+.. bpo: 31904
+.. date: 2019-03-13-14-55-02
+.. nonce: 834kfY
+.. section: Library
+
+Add _signal module support for VxWorks.
+
+..
+
+.. bpo: 36272
+.. date: 2019-03-13-14-14-36
+.. nonce: f3l2IG
+.. section: Library
+
+:mod:`logging` does not silently ignore RecursionError anymore. Patch
+contributed by Rémi Lapeyre.
+
+..
+
+.. bpo: 36280
+.. date: 2019-03-12-21-02-55
+.. nonce: mOd3iH
+.. section: Library
+
+Add a kind field to ast.Constant. It is 'u' if the literal has a 'u' prefix
+(i.e. a Python 2 style unicode literal), else None.
+
+..
+
+.. bpo: 35931
+.. date: 2019-03-11-22-06-36
+.. nonce: Qp_Tbe
+.. section: Library
+
+The :mod:`pdb` ``debug`` command now gracefully handles all exceptions.
+
+..
+
+.. bpo: 36251
+.. date: 2019-03-09-18-01-24
+.. nonce: zOp9l0
+.. section: Library
+
+Fix format strings used for stderrprinter and re.Match reprs. Patch by
+Stephan Hohe.
+
+..
+
+.. bpo: 36235
+.. date: 2019-03-08-13-32-21
+.. nonce: _M72wU
+.. section: Library
+
+Fix ``CFLAGS`` in ``customize_compiler()`` of ``distutils.sysconfig``: when
+the ``CFLAGS`` environment variable is defined, don't override ``CFLAGS``
+variable with the ``OPT`` variable anymore. Initial patch written by David
+Malcolm.
+
+..
+
+.. bpo: 35807
+.. date: 2019-03-06-13-21-33
+.. nonce: W7mmu3
+.. section: Library
+
+Update ensurepip to install pip 19.0.3 and setuptools 40.8.0.
+
+..
+
+.. bpo: 36139
+.. date: 2019-03-06-13-07-29
+.. nonce: 6kedum
+.. section: Library
+
+Release GIL when closing :class:`~mmap.mmap` objects.
+
+..
+
+.. bpo: 36179
+.. date: 2019-03-04-10-42-46
+.. nonce: jEyuI-
+.. section: Library
+
+Fix two unlikely reference leaks in _hashopenssl. The leaks only occur in
+out-of-memory cases.
+
+..
+
+.. bpo: 36169
+.. date: 2019-03-03-11-37-09
+.. nonce: 8nWJy7
+.. section: Library
+
+Add overlap() method to statistics.NormalDist.  Computes the overlapping
+coefficient for two normal distributions.
+
+..
+
+.. bpo: 36103
+.. date: 2019-03-01-16-10-01
+.. nonce: n6VgXL
+.. section: Library
+
+Default buffer size used by ``shutil.copyfileobj()`` is changed from 16 KiB
+to 64 KiB on non-Windows platform to reduce system call overhead.
+Contributed by Inada Naoki.
+
+..
+
+.. bpo: 36130
+.. date: 2019-02-26-22-41-38
+.. nonce: _BnZOo
+.. section: Library
+
+Fix ``pdb`` with ``skip=...`` when stepping into a frame without a
+``__name__`` global.  Patch by Anthony Sottile.
+
+..
+
+.. bpo: 35652
+.. date: 2019-02-26-11-34-44
+.. nonce: 6KRJu_
+.. section: Library
+
+shutil.copytree(copy_function=...) erroneously pass DirEntry instead of a
+path string.
+
+..
+
+.. bpo: 35178
+.. date: 2019-02-25-23-04-00
+.. nonce: NA_rXa
+.. section: Library
+
+Ensure custom :func:`warnings.formatwarning` function can receive `line` as
+positional argument. Based on patch by Tashrif Billah.
+
+..
+
+.. bpo: 36106
+.. date: 2019-02-25-13-21-43
+.. nonce: VuhEiQ
+.. section: Library
+
+Resolve potential name clash with libm's sinpi(). Patch by Dmitrii
+Pasechnik.
+
+..
+
+.. bpo: 36091
+.. date: 2019-02-23-06-49-06
+.. nonce: 26o4Lc
+.. section: Library
+
+Clean up reference to async generator in Lib/types. Patch by Henry Chen.
+
+..
+
+.. bpo: 36043
+.. date: 2019-02-19-19-53-46
+.. nonce: l867v0
+.. section: Library
+
+:class:`FileCookieJar` supports :term:`path-like object`. Contributed by
+Stéphane Wirtel
+
+..
+
+.. bpo: 35899
+.. date: 2019-02-16-07-11-02
+.. nonce: cjfn5a
+.. section: Library
+
+Enum has been fixed to correctly handle empty strings and strings with
+non-Latin characters (ie. 'α', 'א') without crashing. Original patch
+contributed by Maxwell. Assisted by Stéphane Wirtel.
+
+..
+
+.. bpo: 21269
+.. date: 2019-02-10-16-49-16
+.. nonce: Fqi7VH
+.. section: Library
+
+Add ``args`` and ``kwargs`` properties to mock call objects. Contributed by
+Kumar Akshay.
+
+..
+
+.. bpo: 30670
+.. date: 2019-02-06-12-07-46
+.. nonce: yffB3F
+.. section: Library
+
+`pprint.pp` has been added to pretty-print objects with dictionary keys
+being sorted with their insertion order by default. Parameter *sort_dicts*
+has been added to `pprint.pprint`, `pprint.pformat` and
+`pprint.PrettyPrinter`. Contributed by Rémi Lapeyre.
+
+..
+
+.. bpo: 35843
+.. date: 2019-01-28-10-19-40
+.. nonce: 7rXGQE
+.. section: Library
+
+Implement ``__getitem__`` for ``_NamespacePath``.  Patch by Anthony Sottile.
+
+..
+
+.. bpo: 35802
+.. date: 2019-01-21-13-56-55
+.. nonce: 6633PE
+.. section: Library
+
+Clean up code which checked presence of ``os.stat`` / ``os.lstat`` /
+``os.chmod`` which are always present.  Patch by Anthony Sottile.
+
+..
+
+.. bpo: 35715
+.. date: 2019-01-11-08-47-58
+.. nonce: Wi3gl0
+.. section: Library
+
+Librates the return value of a ProcessPoolExecutor _process_worker after
+it's no longer needed to free memory
+
+..
+
+.. bpo: 35493
+.. date: 2019-01-09-23-43-08
+.. nonce: kEcRGE
+.. section: Library
+
+Use :func:`multiprocessing.connection.wait` instead of polling each 0.2
+seconds for worker updates in :class:`multiprocessing.Pool`. Patch by Pablo
+Galindo.
+
+..
+
+.. bpo: 35661
+.. date: 2019-01-05-16-16-20
+.. nonce: H_UOXc
+.. section: Library
+
+Store the venv prompt in pyvenv.cfg.
+
+..
+
+.. bpo: 35121
+.. date: 2018-12-30-14-35-19
+.. nonce: oWmiGU
+.. section: Library
+
+Don't set cookie for a request when the request path is a prefix match of
+the cookie's path attribute but doesn't end with "/". Patch by Karthikeyan
+Singaravelan.
+
+..
+
+.. bpo: 21478
+.. date: 2018-12-21-09-54-30
+.. nonce: 5gsXtc
+.. section: Library
+
+Calls to a child function created with :func:`unittest.mock.create_autospec`
+should propagate to the parent. Patch by Karthikeyan Singaravelan.
+
+..
+
+.. bpo: 35198
+.. date: 2018-11-09-12-45-28
+.. nonce: EJ8keW
+.. section: Library
+
+Fix C++ extension compilation on AIX
+
+..
+
+.. bpo: 36329
+.. date: 2019-03-17-20-01-41
+.. nonce: L5dJPD
+.. section: Documentation
+
+Declare the path of the Python binary for the usage of
+``Tools/scripts/serve.py`` when executing ``make -C Doc/ serve``.
+Contributed by Stéphane Wirtel
+
+..
+
+.. bpo: 36138
+.. date: 2019-03-02-00-40-57
+.. nonce: yfjNzG
+.. section: Documentation
+
+Improve documentation about converting datetime.timedelta to scalars.
+
+..
+
+.. bpo: 21314
+.. date: 2018-11-21-23-01-37
+.. nonce: PG33VT
+.. section: Documentation
+
+A new entry was added to the Core Language Section of the Programming FAQ,
+which explaines the usage of slash(/) in the signature of a function. Patch
+by Lysandros Nikolaou
+
+..
+
+.. bpo: 36234
+.. date: 2019-03-08-12-53-37
+.. nonce: NRVK6W
+.. section: Tests
+
+test_posix.PosixUidGidTests: add tests for invalid uid/gid type (str).
+Initial patch written by David Malcolm.
+
+..
+
+.. bpo: 29571
+.. date: 2019-02-28-18-33-29
+.. nonce: r6b9fr
+.. section: Tests
+
+Fix ``test_re.test_locale_flag()``:  use ``locale.getpreferredencoding()``
+rather than ``locale.getlocale()`` to get the locale encoding. With some
+locales, ``locale.getlocale()`` returns the wrong encoding.
+
+..
+
+.. bpo: 36123
+.. date: 2019-02-26-12-51-35
+.. nonce: QRhhRS
+.. section: Tests
+
+Fix race condition in test_socket.
+
+..
+
+.. bpo: 36356
+.. date: 2019-03-18-23-49-15
+.. nonce: WNrwYI
+.. section: Build
+
+Fix leaks that led to build failure when configured with address sanitizer.
+
+..
+
+.. bpo: 36146
+.. date: 2019-03-01-17-49-22
+.. nonce: VeoyG7
+.. section: Build
+
+Add ``TEST_EXTENSIONS`` constant to ``setup.py`` to allow to not build test
+extensions like ``_testcapi``.
+
+..
+
+.. bpo: 36146
+.. date: 2019-02-28-18-09-01
+.. nonce: IwPJVT
+.. section: Build
+
+Fix setup.py on macOS: only add ``/usr/include/ffi`` to include directories
+of _ctypes, not for all extensions.
+
+..
+
+.. bpo: 31904
+.. date: 2019-02-21-14-48-31
+.. nonce: J82jY2
+.. section: Build
+
+Enable build system to cross-build for VxWorks RTOS.
+
+..
+
+.. bpo: 36312
+.. date: 2019-03-16-16-51-17
+.. nonce: Niwm-T
+.. section: Windows
+
+Fixed decoders for the following code pages: 50220, 50221, 50222, 50225,
+50227, 50229, 57002 through 57011, 65000 and 42.
+
+..
+
+.. bpo: 36264
+.. date: 2019-03-11-09-33-47
+.. nonce: rTzWce
+.. section: Windows
+
+Don't honor POSIX ``HOME`` in ``os.path.expanduser`` on windows.  Patch by
+Anthony Sottile.
+
+..
+
+.. bpo: 24643
+.. date: 2019-02-24-07-52-39
+.. nonce: PofyiS
+.. section: Windows
+
+Fix name collisions due to ``#define timezone _timezone`` in PC/pyconfig.h.
+
+..
+
+.. bpo: 36405
+.. date: 2019-03-23-01-45-56
+.. nonce: m7Wv1F
+.. section: IDLE
+
+Use dict unpacking in idlelib.
+
+..
+
+.. bpo: 36396
+.. date: 2019-03-21-22-43-21
+.. nonce: xSTX-I
+.. section: IDLE
+
+Remove fgBg param of idlelib.config.GetHighlight(). This param was only used
+twice and changed the return type.
+
+..
+
+.. bpo: 36176
+.. date: 2019-03-10-00-07-46
+.. nonce: jk_vv6
+.. section: IDLE
+
+Fix IDLE autocomplete & calltip popup colors. Prevent conflicts with Linux
+dark themes (and slightly darken calltip background).
+
+..
+
+.. bpo: 23205
+.. date: 2019-03-06-14-47-57
+.. nonce: Vv0gfH
+.. section: IDLE
+
+For the grep module, add tests for findfiles, refactor findfiles to be a
+module-level function, and refactor findfiles to use os.walk.
+
+..
+
+.. bpo: 23216
+.. date: 2019-03-02-19-39-53
+.. nonce: ZA7H8H
+.. section: IDLE
+
+Add docstrings to IDLE search modules.
+
+..
+
+.. bpo: 36152
+.. date: 2019-02-28-18-52-40
+.. nonce: 9pkHIU
+.. section: IDLE
+
+Remove colorizer.ColorDelegator.close_when_done and the corresponding
+argument of .close().  In IDLE, both have always been None or False since
+2007.
+
+..
+
+.. bpo: 32129
+.. date: 2019-02-25-11-40-14
+.. nonce: 4qVCzD
+.. section: IDLE
+
+Avoid blurry IDLE application icon on macOS with Tk 8.6. Patch by Kevin
+Walzer.
+
+..
+
+.. bpo: 36096
+.. date: 2019-02-23-17-53-53
+.. nonce: mN5Ly3
+.. section: IDLE
+
+Refactor class variables to instance variables in colorizer.
+
+..
+
+.. bpo: 30348
+.. date: 2018-06-27-21-18-41
+.. nonce: WbaRJW
+.. section: IDLE
+
+Increase test coverage of idlelib.autocomplete by 30%.
+
+..
+
+.. bpo: 35132
+.. date: 2019-03-04-02-09-09
+.. nonce: 1R_pnL
+.. section: Tools/Demos
+
+Fix py-list and py-bt commands of python-gdb.py on gdb7.
+
+..
+
+.. bpo: 32217
+.. date: 2017-12-19-20-42-36
+.. nonce: axXcjA
+.. section: Tools/Demos
+
+Fix freeze script on Windows.
+
+..
+
+.. bpo: 36381
+.. date: 2019-03-20-22-02-40
+.. nonce: xlzDJ2
+.. section: C API
+
+Raise ``DeprecationWarning`` when '#' formats are used for building or
+parsing values without ``PY_SSIZE_T_CLEAN``.
+
+..
+
+.. bpo: 36142
+.. date: 2019-03-01-03-23-48
+.. nonce: 7F6wJd
+.. section: C API
+
+The whole coreconfig.h header is now excluded from Py_LIMITED_API. Move
+functions definitions into a new internal pycore_coreconfig.h header.