-------
On Windows, the default event loop is now :class:`~asyncio.ProactorEventLoop`.
+(Contributed by Victor Stinner in :issue:`34687`.)
+
+:class:`~asyncio.ProactorEventLoop` now also supports UDP.
+(Contributed by Adam Meily and Andrew Svetlov in :issue:`29883`.)
+
+:class:`~asyncio.ProactorEventLoop` can now be interrupted by
+:exc:`KeyboardInterrupt` ("CTRL+C").
+(Contributed by Vladimir Matveev in :issue:`23057`.)
+
builtins
--------
occurred but there is no way for Python to handle it. For example, when a
destructor raises an exception or during garbage collection
(:func:`gc.collect`).
+(Contributed by Victor Stinner in :issue:`36829`.)
tarfile
unittest
--------
-* XXX Added :class:`AsyncMock` to support an asynchronous version of :class:`Mock`.
+* Added :class:`AsyncMock` to support an asynchronous version of :class:`Mock`.
Appropriate new assert functions for testing have been added as well.
(Contributed by Lisa Roach in :issue:`26467`).
are not set;
* the *executable* path contains a directory.
+ (Contributed by Joannah Nanjekye and Victor Stinner in :issue:`35537`.)
+
* :func:`shutil.copyfile`, :func:`shutil.copy`, :func:`shutil.copy2`,
:func:`shutil.copytree` and :func:`shutil.move` use platform-specific
"fast-copy" syscalls on Linux and macOS in order to copy the file
* The function :func:`platform.popen` has been removed, it was deprecated since
Python 3.3: use :func:`os.popen` instead.
+ (Contributed by Victor Stinner in :issue:`35345`.)
* The function :func:`time.clock` has been removed, it was deprecated since Python
3.3: use :func:`time.perf_counter` or :func:`time.process_time` instead, depending
on your requirements, to have a well defined behavior.
+ (Contributed by Matthias Bussonnier in :issue:`36895`.)
* The ``pyvenv`` script has been removed in favor of ``python3.8 -m venv``
to help eliminate confusion as to what Python interpreter the ``pyvenv``
Emulation, Popen constructor using :func:`os.posix_spawn` no longer raise an
exception on errors like missing program, but the child process fails with a
non-zero :attr:`~Popen.returncode`.
+ (Contributed by Joannah Nanjekye and Victor Stinner in :issue:`35537`.)
* The :meth:`imap.IMAP4.logout` method no longer ignores silently arbitrary
exceptions.
* The function :func:`platform.popen` has been removed, it was deprecated since
Python 3.3: use :func:`os.popen` instead.
+ (Contributed by Victor Stinner in :issue:`35345`.)
* The :func:`statistics.mode` function no longer raises an exception
when given multimodal data. Instead, it returns the first mode
``RTLD_LOCAL``, it was already not possible to load C extensions which
were not linked to ``libpython``, like C extensions of the standard
library built by the ``*shared*`` section of ``Modules/Setup``.
+ (Contributed by Victor Stinner in :issue:`21536`.)
* Use of ``#`` variants of formats in parsing or building value (e.g.
:c:func:`PyArg_ParseTuple`, :c:func:`Py_BuildValue`, :c:func:`PyObject_CallFunction`,