.. bpo: 38243
.. date: 2019-09-25-13-21-09
.. nonce: 1pfz24
.. release date: 2019-10-01
.. section: Security

Escape the server title of :class:`xmlrpc.server.DocXMLRPCServer` when
rendering the document page as HTML. (Contributed by Dong-hee Na in
:issue:`38243`.)

..

.. bpo: 38174
.. date: 2019-09-23-21-02-46
.. nonce: MeWuJd
.. section: Security

Update vendorized expat library version to 2.2.8, which resolves
CVE-2019-15903.

..

.. bpo: 37764
.. date: 2019-08-27-01-13-05
.. nonce: qv67PQ
.. section: Security

Fixes email._header_value_parser.get_unstructured going into an infinite
loop for a specific case in which the email header does not have trailing
whitespace, and the case in which it contains an invalid encoded word. Patch
by Ashwin Ramaswami.

..

.. bpo: 38006
.. date: 2019-09-30-09-33-21
.. nonce: UYlJum
.. section: Core and Builtins

Fix a bug due to the interaction of weakrefs and the cyclic garbage
collector. We must clear any weakrefs in garbage in order to prevent their
callbacks from executing and causing a crash.

..

.. bpo: 38317
.. date: 2019-09-30-00-56-21
.. nonce: pmqlIQ
.. section: Core and Builtins

Fix warnings options priority: ``PyConfig.warnoptions`` has the highest
priority, as stated in the :pep:`587`.

..

.. bpo: 36871
.. date: 2019-09-24-18-45-46
.. nonce: p47knk
.. section: Core and Builtins

Improve error handling for the assert_has_calls and assert_has_awaits
methods of mocks. Fixed a bug where any errors encountered while binding the
expected calls to the mock's spec were silently swallowed, leading to
misleading error output.

..

.. bpo: 38236
.. date: 2019-09-20-19-06-23
.. nonce: eQ0Tmj
.. section: Core and Builtins

Python now dumps path configuration if it fails to import the Python codecs
of the filesystem and stdio encodings.

..

.. bpo: 38013
.. date: 2019-09-12-19-50-01
.. nonce: I7btD0
.. section: Core and Builtins

Allow to call ``async_generator_athrow().throw(...)`` even for non-started
async generator helper. It fixes annoying warning at the end of
:func:`asyncio.run` call.

..

.. bpo: 38124
.. date: 2019-09-12-00-14-01
.. nonce: n6E0H7
.. section: Core and Builtins

Fix an off-by-one error in PyState_AddModule that could cause out-of-bounds
memory access.

..

.. bpo: 38005
.. date: 2019-09-02-20-00-31
.. nonce: e7VsTA
.. section: Core and Builtins

Fixed comparing and creating of InterpreterID and ChannelID.

..

.. bpo: 37994
.. date: 2019-08-31-11-13-25
.. nonce: Rj6S4j
.. section: Core and Builtins

Fixed silencing arbitrary errors if an attribute lookup fails in several
sites. Only AttributeError should be silenced.

..

.. bpo: 37990
.. date: 2019-08-31-09-22-33
.. nonce: WDY2f-
.. section: Core and Builtins

Fix elapsed time in gc stats was not printed correctly.  This bug was a
regression in 3.8b4.

..

.. bpo: 37966
.. date: 2019-08-27-21-21-36
.. nonce: 5OBLez
.. section: Core and Builtins

The implementation of :func:`~unicodedata.is_normalized` has been greatly
sped up on strings that aren't normalized, by implementing the full
normalization-quick-check algorithm from the Unicode standard.

..

.. bpo: 20490
.. date: 2019-08-15-12-48-36
.. nonce: -hXeEn
.. section: Core and Builtins

Improve import error message for partially initialized module on circular
``from`` imports - by Anthony Sottile.

..

.. bpo: 37409
.. date: 2019-08-06-23-39-05
.. nonce: 1qwzn2
.. section: Core and Builtins

Ensure explicit relative imports from interactive sessions and scripts
(having no parent package) always raise ImportError, rather than treating
the current module as the package. Patch by Ben Lewis.

..

.. bpo: 37619
.. date: 2019-07-18-11-50-49
.. nonce: X6Lulo
.. section: Core and Builtins

When adding a wrapper descriptor from one class to a different class (for
example, setting ``__add__ = str.__add__`` on an ``int`` subclass), an
exception is correctly raised when the operator is called.

..

.. bpo: 30773
.. date: 2018-06-07-01-01-20
.. nonce: C31rVE
.. section: Core and Builtins

Prohibit parallel running of aclose() / asend() / athrow(). Fix ag_running
to reflect the actual running status of the AG.

..

.. bpo: 38319
.. date: 2019-09-30-22-06-33
.. nonce: 5QjiDa
.. section: Library

sendfile() used in socket and shutil modules was raising OverflowError for
files >= 2GiB on 32-bit architectures.  (patch by Giampaolo Rodola)

..

.. bpo: 38242
.. date: 2019-09-30-00-15-27
.. nonce: uPIyAc
.. section: Library

Revert the new asyncio Streams API

..

.. bpo: 38019
.. date: 2019-09-29-13-50-24
.. nonce: 6MoOE3
.. section: Library

Correctly handle pause/resume reading of closed asyncio unix pipe.

..

.. bpo: 38163
.. date: 2019-09-28-20-16-40
.. nonce: x51-vK
.. section: Library

Child mocks will now detect their type as either synchronous or
asynchronous, asynchronous child mocks will be AsyncMocks and synchronous
child mocks will be either MagicMock or Mock (depending on their parent
type).

..

.. bpo: 38161
.. date: 2019-09-27-16-31-28
.. nonce: zehai1
.. section: Library

Removes _AwaitEvent from AsyncMock.

..

.. bpo: 38216
.. date: 2019-09-27-15-24-45
.. nonce: -7yvZR
.. section: Library

Allow the rare code that wants to send invalid http requests from the
`http.client` library a way to do so.  The fixes for bpo-30458 led to
breakage for some projects that were relying on this ability to test their
own behavior in the face of bad requests.

..

.. bpo: 38108
.. date: 2019-09-25-21-37-02
.. nonce: Jr9HU6
.. section: Library

Any synchronous magic methods on an AsyncMock now return a MagicMock. Any
asynchronous magic methods on a MagicMock now return an AsyncMock.

..

.. bpo: 38248
.. date: 2019-09-22-13-05-36
.. nonce: Yo3N_1
.. section: Library

asyncio: Fix inconsistent immediate Task cancellation

..

.. bpo: 38237
.. date: 2019-09-20-14-27-17
.. nonce: xRUZbx
.. section: Library

The arguments for the builtin pow function are more descriptive. They can
now also be passed in as keywords.

..

.. bpo: 38191
.. date: 2019-09-17-12-28-27
.. nonce: 1TU0HV
.. section: Library

Constructors of :class:`~typing.NamedTuple` and :class:`~typing.TypedDict`
types now accept arbitrary keyword argument names, including "cls", "self",
"typename", "_typename", "fields" and "_fields".  Passing positional
arguments by keyword is deprecated.

..

.. bpo: 38185
.. date: 2019-09-16-19-12-57
.. nonce: zYWppY
.. section: Library

Fixed case-insensitive string comparison in :class:`sqlite3.Row` indexing.

..

.. bpo: 38136
.. date: 2019-09-16-09-54-42
.. nonce: MdI-Zb
.. section: Library

Changes AsyncMock call count and await count to be two different counters.
Now await count only counts when a coroutine has been awaited, not when it
has been called, and vice-versa. Update the documentation around this.

..

.. bpo: 37828
.. date: 2019-09-15-21-31-18
.. nonce: gLLDX7
.. section: Library

Fix default mock name in :meth:`unittest.mock.Mock.assert_called`
exceptions. Patch by Abraham Toriz Cruz.

..

.. bpo: 38175
.. date: 2019-09-15-10-30-33
.. nonce: 61XlUv
.. section: Library

Fix a memory leak in comparison of :class:`sqlite3.Row` objects.

..

.. bpo: 33936
.. date: 2019-09-14-10-34-00
.. nonce: 8wCI_n
.. section: Library

_hashlib no longer calls obsolete OpenSSL initialization function with
OpenSSL 1.1.0+.

..

.. bpo: 34706
.. date: 2019-09-13-14-54-33
.. nonce: HWVpOY
.. section: Library

Preserve subclassing in inspect.Signature.from_callable.

..

.. bpo: 38153
.. date: 2019-09-13-12-18-51
.. nonce: nHAbuJ
.. section: Library

Names of hashing algorithms frome OpenSSL are now normalized to follow
Python's naming conventions. For example OpenSSL uses sha3-512 instead of
sha3_512 or blake2b512 instead of blake2b.

..

.. bpo: 38115
.. date: 2019-09-13-09-24-58
.. nonce: BOO-Y1
.. section: Library

Fix a bug in dis.findlinestarts() where it would return invalid bytecode
offsets. Document that a code object's co_lnotab can contain invalid
bytecode offsets.

..

.. bpo: 38148
.. date: 2019-09-13-08-55-43
.. nonce: Lnww6D
.. section: Library

Add slots to :mod:`asyncio` transport classes, which can reduce memory
usage.

..

.. bpo: 36991
.. date: 2019-09-12-14-52-38
.. nonce: 1OcSm8
.. section: Library

Fixes a potential incorrect AttributeError exception escaping
ZipFile.extract() in some unsupported input error situations.

..

.. bpo: 38134
.. date: 2019-09-12-13-18-55
.. nonce: gXJTbP
.. section: Library

Remove obsolete copy of PBKDF2_HMAC_fast. All supported OpenSSL versions
contain a fast implementation.

..

.. bpo: 38132
.. date: 2019-09-12-12-47-35
.. nonce: KSFx1F
.. section: Library

The OpenSSL hashlib wrapper uses a simpler implementation. Several Macros
and pointless caches are gone. The hash name now comes from OpenSSL's EVP.
The algorithm name stays the same, except it is now always lower case.

..

.. bpo: 38008
.. date: 2019-09-12-10-47-34
.. nonce: sH74Iy
.. section: Library

Fix parent class check in protocols to correctly identify the module that
provides a builtin protocol, instead of assuming they all come from the
:mod:`collections.abc` module

..

.. bpo: 37405
.. date: 2019-09-11-20-27-41
.. nonce: MG5xiY
.. section: Library

Fixed regression bug for socket.getsockname() for non-CAN_ISOTP AF_CAN
address family sockets by returning a 1-tuple instead of string.

..

.. bpo: 38121
.. date: 2019-09-11-16-54-57
.. nonce: SrSDzB
.. section: Library

Update parameter names on functions in importlib.metadata matching the
changes in the 0.22 release of importlib_metadata.

..

.. bpo: 38110
.. date: 2019-09-11-14-49-20
.. nonce: A19Y-q
.. section: Library

The os.closewalk() implementation now uses the libc fdwalk() API on
platforms where it is available.

..

.. bpo: 38093
.. date: 2019-09-11-14-45-30
.. nonce: yQ6k7y
.. section: Library

Fixes AsyncMock so it doesn't crash when used with AsyncContextManagers or
AsyncIterators.

..

.. bpo: 37488
.. date: 2019-09-11-11-44-16
.. nonce: S8CJUL
.. section: Library

Add warning to :meth:`datetime.utctimetuple`,  :meth:`datetime.utcnow` and
:meth:`datetime.utcfromtimestamp` .

..

.. bpo: 38086
.. date: 2019-09-10-11-42-59
.. nonce: w5TlG-
.. section: Library

Update importlib.metadata with changes from `importlib_metadata 0.21
<https://gitlab.com/python-devs/importlib_metadata/blob/0.21/importlib_metadata/docs/changelog.rst>`_.

..

.. bpo: 37251
.. date: 2019-09-10-10-59-50
.. nonce: 8zn2o3
.. section: Library

Remove `__code__` check in AsyncMock that incorrectly evaluated function
specs as async objects but failed to evaluate classes with `__await__` but
no `__code__` attribute defined as async objects.

..

.. bpo: 38037
.. date: 2019-09-09-18-39-23
.. nonce: B0UgFU
.. section: Library

Fix reference counters in the :mod:`signal` module.

..

.. bpo: 38066
.. date: 2019-09-09-14-39-47
.. nonce: l9mWv-
.. section: Library

Hide internal asyncio.Stream methods: feed_eof(), feed_data(),
set_exception() and set_transport().

..

.. bpo: 38059
.. date: 2019-09-08-11-36-50
.. nonce: 8SA6co
.. section: Library

inspect.py now uses sys.exit() instead of exit()

..

.. bpo: 37953
.. date: 2019-09-06-17-40-34
.. nonce: db5FQq
.. section: Library

In :mod:`typing`, improved the ``__hash__`` and ``__eq__`` methods for
:class:`ForwardReferences`.

..

.. bpo: 38026
.. date: 2019-09-04-20-34-14
.. nonce: 0LLRX-
.. section: Library

Fixed :func:`inspect.getattr_static` used ``isinstance`` while it should
avoid dynamic lookup.

..

.. bpo: 38010
.. date: 2019-09-02-14-30-39
.. nonce: JOnz9Z
.. section: Library

In ``importlib.metadata`` sync with ``importlib_metadata`` 0.20, clarifying
behavior of ``files()`` and fixing issue where only one requirement was
returned for ``requires()`` on ``dist-info`` packages.

..

.. bpo: 38006
.. date: 2019-09-02-13-37-27
.. nonce: Y7vA0Q
.. section: Library

weakref.WeakValueDictionary defines a local remove() function used as
callback for weak references. This function was created with a closure.
Modify the implementation to avoid the closure.

..

.. bpo: 34410
.. date: 2019-08-31-01-52-59
.. nonce: 7KbWZQ
.. section: Library

Fixed a crash in the :func:`tee` iterator when re-enter it. RuntimeError is
now raised in this case.

..

.. bpo: 37140
.. date: 2019-08-30-11-21-10
.. nonce: cFAX-a
.. section: Library

Fix a ctypes regression of Python 3.8. When a ctypes.Structure is passed by
copy to a function, ctypes internals created a temporary object which had
the side effect of calling the structure finalizer (__del__) twice. The
Python semantics requires a finalizer to be called exactly once. Fix ctypes
internals to no longer call the finalizer twice.

..

.. bpo: 37972
.. date: 2019-08-28-21-40-12
.. nonce: kP-n4L
.. section: Library

Subscripts to the `unittest.mock.call` objects now receive the same chaining
mechanism as any other custom attributes, so that the following usage no
longer raises a `TypeError`:

call().foo().__getitem__('bar')

Patch by blhsing

..

.. bpo: 22347
.. date: 2019-08-27-01-03-26
.. nonce: _TRpYr
.. section: Library

Update mimetypes.guess_type to allow proper parsing of URLs with only a host
name. Patch by Dong-hee Na.

..

.. bpo: 37885
.. date: 2019-08-19-10-31-41
.. nonce: 4Nc9sp
.. section: Library

venv: Don't generate unset variable warning on deactivate.

..

.. bpo: 37785
.. date: 2019-08-07-14-49-22
.. nonce: y7OlT8
.. section: Library

Fix xgettext warnings in :mod:`argparse`.

..

.. bpo: 11953
.. date: 2019-07-29-21-39-45
.. nonce: 4Hpwf9
.. section: Library

Completing WSA* error codes in :mod:`socket`.

..

.. bpo: 37424
.. date: 2019-07-04-13-00-20
.. nonce: 0i1MR-
.. section: Library

Fixes a possible hang when using a timeout on `subprocess.run()` while
capturing output.  If the child process spawned its own children or
otherwise connected its stdout or stderr handles with another process, we
could hang after the timeout was reached and our child was killed when
attempting to read final output from the pipes.

..

.. bpo: 37212
.. date: 2019-06-22-22-00-35
.. nonce: Zhv-tq
.. section: Library

:func:`unittest.mock.call` now preserves the order of keyword arguments in
repr output. Patch by Karthikeyan Singaravelan.

..

.. bpo: 37305
.. date: 2019-06-18-13-59-55
.. nonce: fGzWlP
.. section: Library

Add .webmanifest -> application/manifest+json to list of recognized file
types and content type headers

..

.. bpo: 21872
.. date: 2019-06-12-08-56-22
.. nonce: V9QGGN
.. section: Library

Fix :mod:`lzma`: module decompresses data incompletely. When decompressing a
FORMAT_ALONE format file, and it doesn't have the end marker, sometimes the
last one to dozens bytes can't be output. Patch by Ma Lin.

..

.. bpo: 37206
.. date: 2019-06-09-22-25-03
.. nonce: 2WBg4q
.. section: Library

Default values which cannot be represented as Python objects no longer
improperly represented as ``None`` in function signatures.

..

.. bpo: 12144
.. date: 2019-06-08-23-26-58
.. nonce: Z7mz-q
.. section: Library

Ensure cookies with ``expires`` attribute are handled in
:meth:`CookieJar.make_cookies`.

..

.. bpo: 31163
.. date: 2019-05-26-16-34-53
.. nonce: 21A802
.. section: Library

pathlib.Path instance's rename and replace methods now return the new Path
instance.

..

.. bpo: 25068
.. date: 2019-05-22-04-52-35
.. nonce: vR_rC-
.. section: Library

:class:`urllib.request.ProxyHandler` now lowercases the keys of the passed
dictionary.

..

.. bpo: 21315
.. date: 2019-05-19-10-48-46
.. nonce: PgXVqF
.. section: Library

Email headers containing RFC2047 encoded words are parsed despite the
missing whitespace, and a defect registered. Also missing trailing
whitespace after encoded words is now registered as a defect.

..

.. bpo: 36250
.. date: 2019-03-09-16-04-12
.. nonce: tSK4N1
.. section: Library

Ignore ``ValueError`` from ``signal`` with ``interaction`` in non-main
thread.

..

.. bpo: 35168
.. date: 2019-01-22-09-23-20
.. nonce: UGv2yW
.. section: Library

:attr:`shlex.shlex.punctuation_chars` is now a read-only property.

..

.. bpo: 20504
.. date: 2018-11-21-18-05-50
.. nonce: kG0ub5
.. section: Library

Fixes a bug in :mod:`cgi` module when a multipart/form-data request has no
`Content-Length` header.

..

.. bpo: 34519
.. date: 2018-08-27-15-44-50
.. nonce: cPlH1h
.. section: Library

Add additional aliases for HP Roman 8. Patch by Michael Osipov.

..

.. bpo: 26868
.. date: 2019-09-07-15-55-46
.. nonce: Raw0Gd
.. section: Documentation

Fix example usage of :c:func:`PyModule_AddObject` to properly handle errors.

..

.. bpo: 36797
.. date: 2019-09-05-14-47-51
.. nonce: KN9Ga5
.. section: Documentation

Fix a dead link in the distutils API Reference.

..

.. bpo: 37977
.. date: 2019-08-29-14-38-01
.. nonce: pML-UI
.. section: Documentation

Warn more strongly and clearly about pickle insecurity

..

.. bpo: 37937
.. date: 2019-08-24-12-59-06
.. nonce: F7fHbt
.. section: Documentation

Mention ``frame.f_trace`` in :func:`sys.settrace` docs.

..

.. bpo: 36260
.. date: 2019-06-04-09-29-00
.. nonce: WrGuc-
.. section: Documentation

Add decompression pitfalls to zipfile module documentation.

..

.. bpo: 36960
.. date: 2019-05-18-16-25-44
.. nonce: xEKHXj
.. section: Documentation

Restructured the :mod:`datetime` docs in the interest of making them more
user-friendly and improving readability. Patch by Brad Solomon.

..

.. bpo: 23460
.. date: 2019-02-14-07-12-48
.. nonce: Iqiqtm
.. section: Documentation

The documentation for decimal string formatting using the `:g` specifier has
been updated to reflect the correct exponential notation cutoff point.
Original patch contributed by Tuomas Suutari.

..

.. bpo: 35803
.. date: 2019-01-21-14-30-59
.. nonce: yae6Lq
.. section: Documentation

Document and test that ``tempfile`` functions may accept a :term:`path-like
object` for the ``dir`` argument.  Patch by Anthony Sottile.

..

.. bpo: 33944
.. date: 2018-10-26-18-10-29
.. nonce: V1YeOA
.. section: Documentation

Added a note about the intended use of code in .pth files.

..

.. bpo: 34293
.. date: 2018-07-31-15-38-26
.. nonce: yHupAL
.. section: Documentation

Fix the Doc/Makefile regarding PAPER environment variable and PDF builds

..

.. bpo: 38239
.. date: 2019-09-26-15-48-36
.. nonce: MfoVzY
.. section: Tests

Fix test_gdb for Link Time Optimization (LTO) builds.

..

.. bpo: 38275
.. date: 2019-09-25-14-40-57
.. nonce: -kdveI
.. section: Tests

test_ssl now handles disabled TLS/SSL versions better. OpenSSL's crypto
policy and run-time settings are recognized and tests for disabled versions
are skipped. Tests also accept more TLS minimum_versions for platforms that
override OpenSSL's default with strict settings.

..

.. bpo: 38271
.. date: 2019-09-25-13-11-29
.. nonce: iHXNIg
.. section: Tests

The private keys for test_ssl were encrypted with 3DES in traditional PKCS#5
format. 3DES and the digest algorithm of PKCS#5 are blocked by some strict
crypto policies. Use PKCS#8 format with AES256 encryption instead.

..

.. bpo: 38270
.. date: 2019-09-25-12-18-31
.. nonce: _x-9uH
.. section: Tests

test.support now has a helper function to check for availibility of a hash
digest function. Several tests are refactored avoid MD5 and use SHA256
instead. Other tests are marked to use MD5 and skipped when MD5 is disabled.

..

.. bpo: 37123
.. date: 2019-09-24-12-30-55
.. nonce: IoutBn
.. section: Tests

Multiprocessing test test_mymanager() now also expects -SIGTERM, not only
exitcode 0. BaseManager._finalize_manager() sends SIGTERM to the manager
process if it takes longer than 1 second to stop, which happens on slow
buildbots.

..

.. bpo: 38212
.. date: 2019-09-24-12-24-05
.. nonce: IWbhWz
.. section: Tests

Multiprocessing tests: increase test_queue_feeder_donot_stop_onexc() timeout
from 1 to 60 seconds.

..

.. bpo: 38117
.. date: 2019-09-11-17-22-32
.. nonce: X7LgGY
.. section: Tests

Test with OpenSSL 1.1.1d

..

.. bpo: 37531
.. date: 2019-08-20-19-24-19
.. nonce: wRoXfU
.. section: Tests

Enhance regrtest multiprocess timeout: write a message when killing a worker
process, catch popen.kill() and popen.wait() exceptions, put a timeout on
the second call to popen.communicate().

..

.. bpo: 37876
.. date: 2019-08-16-16-15-14
.. nonce: m3k1w3
.. section: Tests

Add tests for ROT-13 codec.

..

.. bpo: 37252
.. date: 2019-06-12-14-30-29
.. nonce: 4o-uLs
.. section: Tests

Fix assertions in ``test_close`` and ``test_events_mask_overflow`` devpoll
tests.

..

.. bpo: 34001
.. date: 2019-06-03-20-47-10
.. nonce: KvYx9z
.. section: Tests

Make test_ssl pass with LibreSSL. LibreSSL handles minimum and maximum TLS
version differently than OpenSSL.

..

.. bpo: 36919
.. date: 2019-05-28-15-41-34
.. nonce: -vGt_m
.. section: Tests

Make ``test_source_encoding.test_issue2301`` implementation independent. The
test will work now for both CPython and IronPython.

..

.. bpo: 34596
.. date: 2018-09-07-01-18-27
.. nonce: r2-EGd
.. section: Tests

Fallback to a default reason when :func:`unittest.skip` is uncalled. Patch
by Naitree Zhu.

..

.. bpo: 38301
.. date: 2019-09-28-02-37-11
.. nonce: 123456
.. section: Build

In Solaris family, we must be sure to use ``-D_REENTRANT``. Patch by Jesús
Cea Avión.

..

.. bpo: 36210
.. date: 2019-09-24-22-47-47
.. nonce: EmL9X1
.. section: Build

Update optional extension module detection for AIX. ossaudiodev and spwd are
not applicable for AIX, and are no longer reported as missing. 3rd-party
packaging of ncurses (with ASIS support) conflicts with officially supported
AIX curses library, so configure AIX to use libcurses.a. However, skip
trying to build _curses_panel.

patch by M Felt

..

.. bpo: 36002
.. date: 2019-09-13-14-12-36
.. nonce: Bcl4oe
.. section: Build

Locate ``llvm-profdata`` and ``llvm-ar`` binaries using ``AC_PATH_TOOL``
rather than ``AC_PATH_TARGET_TOOL``.

..

.. bpo: 37936
.. date: 2019-09-10-00-54-48
.. nonce: E7XEwu
.. section: Build

The :file:`.gitignore` file systematically keeps "rooted", with a
non-trailing slash, all the rules that are meant to apply to files in a
specific place in the repo.  Previously, when the intended file to ignore
happened to be at the root of the repo, we'd most often accidentally also
ignore files and directories with the same name anywhere in the tree.

..

.. bpo: 37936
.. date: 2019-08-24-00-29-40
.. nonce: QrORqA
.. section: Build

The :file:`.gitignore` file no longer applies to any files that are in fact
tracked in the Git repository.  Patch by Greg Price.

..

.. bpo: 38117
.. date: 2019-09-16-14-07-11
.. nonce: hJVf0C
.. section: Windows

Update bundled OpenSSL to 1.1.1d

..

.. bpo: 38092
.. date: 2019-09-13-14-11-42
.. nonce: x31ehI
.. section: Windows

Reduce overhead when using multiprocessing in a Windows virtual environment.

..

.. bpo: 38133
.. date: 2019-09-12-12-05-55
.. nonce: yFeRGS
.. section: Windows

Allow py.exe launcher to locate installations from the Microsoft Store and
improve display of active virtual environments.

..

.. bpo: 38114
.. date: 2019-09-11-15-24-04
.. nonce: cc0E5E
.. section: Windows

The ``pip.ini`` is no longer included in the Nuget package.

..

.. bpo: 36634
.. date: 2019-09-11-14-42-04
.. nonce: 8Un8ih
.. section: Windows

:func:`os.cpu_count` now returns active processors rather than maximum
processors.

..

.. bpo: 36634
.. date: 2019-09-11-12-34-31
.. nonce: xLaGgb
.. section: Windows

venv activate.bat now works when the existing variables contain double quote
characters.

..

.. bpo: 38081
.. date: 2019-09-11-10-22-01
.. nonce: 8JhzjD
.. section: Windows

Prevent error calling :func:`os.path.realpath` on ``'NUL'``.

..

.. bpo: 38087
.. date: 2019-09-10-14-21-40
.. nonce: --eIib
.. section: Windows

Fix case sensitivity in test_pathlib and test_ntpath.

..

.. bpo: 38088
.. date: 2019-09-10-14-17-25
.. nonce: FOvWSM
.. section: Windows

Fixes distutils not finding vcruntime140.dll with only the v142 toolset
installed.

..

.. bpo: 37283
.. date: 2019-09-09-12-22-23
.. nonce: 8NvOkU
.. section: Windows

Ensure command-line and unattend.xml setting override previously detected
states in Windows installer.

..

.. bpo: 38030
.. date: 2019-09-04-14-01-08
.. nonce: _USdtk
.. section: Windows

Fixes :func:`os.stat` failing for block devices on Windows

..

.. bpo: 38020
.. date: 2019-09-03-11-47-37
.. nonce: xFZ2j0
.. section: Windows

Fixes potential crash when calling :func:`os.readlink` (or indirectly
through :func:`~os.path.realpath`) on a file that is not a supported link.

..

.. bpo: 37705
.. date: 2019-08-30-15-15-22
.. nonce: 2o4NWW
.. section: Windows

Improve the implementation of ``winerror_to_errno()``.

..

.. bpo: 37702
.. date: 2019-07-29-16-49-31
.. nonce: Lj2f5e
.. section: Windows

Fix memory leak on Windows in creating an SSLContext object or running
urllib.request.urlopen('https://...').

..

.. bpo: 37445
.. date: 2019-06-28-18-10-29
.. nonce: LsdYO6
.. section: Windows

Include the ``FORMAT_MESSAGE_IGNORE_INSERTS`` flag in ``FormatMessageW()``
calls.

..

.. bpo: 37380
.. date: 2019-06-25-04-15-22
.. nonce: tPxjuz
.. section: Windows

Don't collect unfinished processes with ``subprocess._active`` on Windows to
cleanup later. Patch by Ruslan Kuprieiev.

..

.. bpo: 32587
.. date: 2019-05-10-15-25-44
.. nonce: -0g2O3
.. section: Windows

Make :data:`winreg.REG_MULTI_SZ` support zero-length strings.

..

.. bpo: 38117
.. date: 2019-09-15-21-29-13
.. nonce: ZLsoAZ
.. section: macOS

Updated OpenSSL to 1.1.1d in macOS installer.

..

.. bpo: 38089
.. date: 2019-09-10-14-24-35
.. nonce: eedgyD
.. section: macOS

Move Azure Pipelines to latest VM versions and make macOS tests optional

..

.. bpo: 35379
.. date: 2019-09-17-01-28-56
.. nonce: yAECDr
.. section: IDLE

When exiting IDLE, catch any AttributeError.  One happens when
EditorWindow.close is called twice.  Printing a traceback, when IDLE is run
from a terminal, is useless and annoying.

..

.. bpo: 38183
.. date: 2019-09-16-15-04-29
.. nonce: eudCN1
.. section: IDLE

To avoid problems, test_idle ignores the user config directory. It no longer
tries to create or access .idlerc or any files within. Users must run IDLE
to discover problems with saving settings.

..

.. bpo: 38077
.. date: 2019-09-09-22-08-36
.. nonce: Mzpfe2
.. section: IDLE

IDLE no longer adds 'argv' to the user namespace when initializing it.  This
bug only affected 3.7.4 and 3.8.0b2 to 3.8.0b4.

..

.. bpo: 38041
.. date: 2019-09-05-23-12-13
.. nonce: nxmGGK
.. section: IDLE

Shell restart lines now fill the window width, always start with '=', and
avoid wrapping unnecessarily. The line will still wrap if the included file
name is long relative to the width.

..

.. bpo: 35771
.. date: 2019-09-01-10-22-55
.. nonce: tdbmbP
.. section: IDLE

To avoid occasional spurious test_idle failures on slower machines, increase
the ``hover_delay`` in test_tooltip.

..

.. bpo: 37902
.. date: 2019-08-21-16-02-49
.. nonce: _R_adE
.. section: IDLE

Add mousewheel scrolling for IDLE module, path, and stack browsers. Patch by
George Zhang.

..

.. bpo: 37803
.. date: 2019-09-12-16-15-55
.. nonce: chEizy
.. section: Tools/Demos

pdb's ``--help`` and ``--version`` long options now work.

..

.. bpo: 37064
.. date: 2019-05-27-15-26-12
.. nonce: k_SPW2
.. section: Tools/Demos

Add option -k to pathscript.py script: preserve shebang flags. Add option -a
to pathscript.py script: add flags.

..

.. bpo: 38234
.. date: 2019-09-24-17-09-48
.. nonce: d0bhEA
.. section: C API

:c:func:`Py_SetPath` now sets :data:`sys.executable` to the program full
path (:c:func:`Py_GetProgramFullPath`) rather than to the program name
(:c:func:`Py_GetProgramName`).

..

.. bpo: 38234
.. date: 2019-09-20-17-22-41
.. nonce: ZbquVK
.. section: C API

Python ignored arguments passed to :c:func:`Py_SetPath`,
:c:func:`Py_SetPythonHome` and :c:func:`Py_SetProgramName`: fix Python
initialization to use specified arguments.

..

.. bpo: 38205
.. date: 2019-09-19-18-26-29
.. nonce: Db1OJL
.. section: C API

The :c:func:`Py_UNREACHABLE` macro now calls :c:func:`Py_FatalError`.

..

.. bpo: 37879
.. date: 2019-08-17-13-50-21
.. nonce: CZeUem
.. section: C API

Fix subtype_dealloc to suppress the type decref when the base type is a C
heap type