mirror of https://github.com/python/cpython
Merge 3.5
This commit is contained in:
Yury Selivanov
commit
cd8611d572
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@ -114,7 +114,7 @@ CPython implementation improvements:
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* Builtin and extension modules are now initialized in a multi-phase process,
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which is similar to how Python modules are loaded. (:pep:`489`).
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Significantly Improved Library Modules:
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Significantly improved library modules:
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* :class:`collections.OrderedDict` is now implemented in C, which makes it
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4 to 100 times faster. (Contributed by Eric Snow in :issue:`16991`.)
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@ -432,7 +432,7 @@ PEP 475: Retry system calls failing with EINTR
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:pep:`475` adds support for automatic retry of system calls failing with
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:py:data:`~errno.EINTR`: this means that user code doesn't have to deal with
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EINTR or :exc:`InterruptedError` manually, and should make it more robust
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``EINTR`` or :exc:`InterruptedError` manually, and should make it more robust
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against asynchronous signal reception.
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Examples of functions which are now retried when interrupted by a signal
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@ -656,6 +656,13 @@ The :class:`~cgi.FieldStorage` class now supports the context management
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protocol. (Contributed by Berker Peksag in :issue:`20289`.)
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csv
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---
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:meth:`Writer.writerow <csv.Writer.writerow>` now supports arbitrary iterables,
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not just sequences. (Contributed by Serhiy Storchaka in :issue:`23171`.)
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cmath
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-----
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@ -709,10 +716,15 @@ methods to match corresponding methods of :class:`str`.
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collections.abc
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---------------
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The :meth:`Sequence.index <collections.abc.Sequence.index>` method now
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accepts *start* and *stop* arguments to match the corresponding methods
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of :class:`tuple`, :class:`list`, etc.
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(Contributed by Devin Jeanpierre in :issue:`23086`.)
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A new :class:`~collections.abc.Generator` abstract base class. (Contributed
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by Stefan Behnel in :issue:`24018`.)
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New :class:`~collections.abc.Coroutine`,
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New :class:`~collections.abc.Awaitable` :class:`~collections.abc.Coroutine`,
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:class:`~collections.abc.AsyncIterator`, and
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:class:`~collections.abc.AsyncIterable` abstract base classes.
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(Contributed by Yury Selivanov in :issue:`24184`.)
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@ -726,6 +738,9 @@ sumultaneously to perform parallel bytecode compilation.
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The :func:`~compileall.compile_dir` function has a corresponding ``workers``
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parameter. (Contributed by Claudiu Popa in :issue:`16104`.)
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Another new option, ``-r``, allows to control the maximum recursion
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level for subdirectories. (Contributed by Claudiu Popa in :issue:`19628`.)
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The ``-q`` command line option can now be specified more than once, in
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which case all output, including errors, will be suppressed. The corresponding
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``quiet`` parameter in :func:`~compileall.compile_dir`,
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@ -742,6 +757,19 @@ The :meth:`Executor.map <concurrent.futures.Executor.map>` method now accepts a
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:meth:`~concurrent.futures.ProcessPoolExecutor` is used.
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(Contributed by Dan O'Reilly in :issue:`11271`.)
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A number of workers in :class:`~concurrent.futures.ThreadPoolExecutor` is
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optional now. The default value equals to 5 times the number of CPUs.
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(Contributed by Claudiu Popa in :issue:`21527`.)
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configparser
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------------
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Config parsers can be customized by providing a dictionary of converters in the
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constructor. All converters defined in config parser (either by subclassing or
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by providing in a constructor) will be available on all section proxies.
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(Contributed by Łukasz Langa in :issue:`18159`.)
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contextlib
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----------
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@ -761,6 +789,13 @@ and :envvar:`COLS` environment variables. This is useful for detecting
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manual screen resize. (Contributed by Arnon Yaari in :issue:`4254`.)
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dbm
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---
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:func:`dumb.open <dbm.dumb.open>` always creates a new database when the flag
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has the value ``'n'``. (Contributed by Claudiu Popa in :issue:`18039`.)
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difflib
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-------
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@ -818,6 +853,10 @@ of using encoded words. This allows ``Messages`` to be formatted according to
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``SMTPUTF8`` extension. (Contributed by R. David Murray in
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:issue:`24211`.)
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:class:`email.mime.text.MIMEText` constructor now accepts a
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:class:`~email.charset.Charset` instance.
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(Contributed by Claude Paroz and Berker Peksag in :issue:`16324`.)
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enum
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----
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@ -860,12 +899,20 @@ search in subdirectories using the ``"**"`` pattern.
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(Contributed by Serhiy Storchaka in :issue:`13968`.)
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gzip
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----
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The *mode* argument of :class:`~gzip.GzipFile` constructor now
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accepts ``"x"`` to request exclusive creation.
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(Contributed by Tim Heaney in :issue:`19222`.)
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heapq
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-----
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Element comparison in :func:`~heapq.merge` can now be customized by
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passing a :term:`key function` in a new optional ``key`` keyword argument.
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A new optional ``reverse`` keyword argument can be used to reverse element
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passing a :term:`key function` in a new optional *key* keyword argument.
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A new optional *reverse* keyword argument can be used to reverse element
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comparison. (Contributed by Raymond Hettinger in :issue:`13742`.)
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@ -877,6 +924,18 @@ HTTP status codes, reason phrases and long descriptions written in English.
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(Contributed by Demian Brecht in :issue:`21793`.)
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http.client
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-----------
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:meth:`HTTPConnection.getresponse() <http.client.HTTPConnection.getresponse>`
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now raises a :exc:`~http.client.RemoteDisconnected` exception when a
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remote server connection is closed unexpectedly. Additionally, if a
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:exc:`ConnectionError` (of which ``RemoteDisconnected``
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is a subclass) is raised, the client socket is now closed automatically,
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and will reconnect on the next request.
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(Contributed by Martin Panter in :issue:`3566`.)
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idlelib and IDLE
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----------------
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@ -1006,7 +1065,18 @@ to sort the keys alphabetically. (Contributed by Berker Peksag
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in :issue:`21650`.)
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JSON decoder now raises :exc:`json.JSONDecodeError` instead of
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:exc:`ValueError`. (Contributed by Serhiy Storchaka in :issue:`19361`.)
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:exc:`ValueError` to provide better context information about the error.
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(Contributed by Serhiy Storchaka in :issue:`19361`.)
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linecache
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---------
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A new :func:`~linecache.lazycache` function can be used to capture information
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about a non-file based module to permit getting its lines later via
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:func:`~linecache.getline`. This avoids doing I/O until a line is actually
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needed, without having to carry the module globals around indefinitely.
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(Contributed by Robert Collins in :issue:`17911`.)
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locale
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@ -1060,6 +1130,14 @@ function is now deprecated. (Contributed by Mark Dickinson and Serhiy
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Storchaka in :issue:`22486`.)
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multiprocessing
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---------------
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:func:`~multiprocessing.synchronized` objects now support the
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:term:`context manager` protocol. (Contributed by Charles-François Natali in
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:issue:`21565`.)
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operator
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--------
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@ -1155,6 +1233,10 @@ A new :meth:`POP3.utf8 <poplib.POP3.utf8>` command enables :rfc:`6856`
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re
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--
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References and conditional references to groups with fixed length are now
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allowed in lookbehind assertions.
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(Contributed by Serhiy Storchaka in :issue:`9179`.)
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The number of capturing groups in regular expression is no longer limited by
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100. (Contributed by Serhiy Storchaka in :issue:`22437`.)
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@ -1400,8 +1482,9 @@ A new :func:`~sys.set_coroutine_wrapper` function allows setting a global
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hook that will be called whenever a :term:`coroutine object <coroutine>`
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is created by an :keyword:`async def` function. A corresponding
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:func:`~sys.get_coroutine_wrapper` can be used to obtain a currently set
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wrapper. Both functions are provisional, and are intended for debugging
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purposes only. (Contributed by Yury Selivanov in :issue:`24017`.)
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wrapper. Both functions are :term:`provisional <provisional package>`,
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and are intended for debugging purposes only. (Contributed by Yury Selivanov
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in :issue:`24017`.)
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A new :func:`~sys.is_finalizing` function can be used to check if the Python
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interpreter is :term:`shutting down <interpreter shutdown>`.
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@ -1430,6 +1513,11 @@ If set to ``False`` (the default, and the behavior in versions prior to 3.5),
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they will be owned by the named user and group in the tarfile.
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(Contributed by Michael Vogt and Eric Smith in :issue:`23193`.)
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The :meth:`TarFile.list <tarfile.TarFile.list>` now accepts an optional
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*members* keyword argument that can be set to a subset of the list returned
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by :meth:`TarFile.getmembers <tarfile.TarFile.getmembers>`.
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(Contributed by Serhiy Storchaka in :issue:`21549`.)
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threading
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---------
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@ -1535,6 +1623,18 @@ The :mod:`unicodedata` module now uses data from `Unicode 8.0.0
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unittest
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--------
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The :meth:`TestLoader.loadTestsFromModule <unittest.TestLoader.loadTestsFromModule>`
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method now accepts a keyword-only argument *pattern* which is passed to
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``load_tests`` as the third argument. Found packages are now checked for
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``load_tests`` regardless of whether their path matches *pattern*, because it
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is impossible for a package name to match the default pattern.
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(Contributed by Robert Collins and Barry A. Warsaw in :issue:`16662`.)
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Unittest discovery errors now are exposed in
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:data:`TestLoader.errors <unittest.TestLoader.errors>` attribute of the
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:class:`~unittest.TestLoader` instance.
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(Contributed by Robert Collins in :issue:`19746`.)
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A new command line option ``--locals`` to show local variables in
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tracebacks. (Contributed by Robert Collins in :issue:`22936`.)
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@ -1558,6 +1658,10 @@ The :class:`~unittest.mock.MagicMock` class now supports :meth:`__truediv__`,
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(Contributed by Johannes Baiter in :issue:`20968`, and Håkan Lövdahl
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in :issue:`23581` and :issue:`23568`.)
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It is no longer necessary to explicitly pass ``create=True`` to the
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:func:`~unittest.mock.patch` function when patching builtin names.
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(Contributed by Kushal Das in :issue:`17660`.)
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wsgiref
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-------
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@ -1586,6 +1690,9 @@ SAX parsers now support a character stream of the
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:class:`xmlreader.InputSource <xml.sax.xmlreader.InputSource>` object.
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(Contributed by Serhiy Storchaka in :issue:`2175`.)
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:func:`~xml.sax.parseString` now accepts a :class:`str` instance.
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(Contributed by Serhiy Storchaka in :issue:`10590`.)
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zipfile
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-------
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@ -1808,6 +1915,7 @@ instead. In addition, the undocumented *LegalChars* parameter of
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Passing a format string as keyword argument *format_string* to the
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:meth:`~string.Formatter.format` method of the :class:`string.Formatter`
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class has been deprecated.
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(Contributed by Serhiy Storchaka in :issue:`23671`.)
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The :func:`platform.dist` and :func:`platform.linux_distribution` functions
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are now deprecated and will be removed in Python 3.7. Linux distributions use
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@ -1833,6 +1941,16 @@ The :mod:`inspect` :func:`~inspect.getfullargspec`,
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Use of ``re.LOCALE`` flag with str patterns or ``re.ASCII`` is now
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deprecated. (Contributed by Serhiy Storchaka in :issue:`22407`.)
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Use of unrecognized special sequences consisting of ``'\'`` and an ASCII letter
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in regular expression patterns and replacement patterns now raises a
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deprecation warning and will be forbidden in Python 3.6.
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(Contributed by Serhiy Storchaka in :issue:`23622`.)
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The undocumented and unofficial *use_load_tests* default argument of the
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:meth:`unittest.TestLoader.loadTestsFromModule` method now is
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deprecated and ignored.
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(Contributed by Robert Collins and Barry A. Warsaw in :issue:`16662`.)
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Removed
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=======
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@ -1853,8 +1971,8 @@ removed:
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* The concept of ``.pyo`` files has been removed.
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* The JoinableQueue class in the provisional asyncio module was deprecated
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in 3.4.4 and is now removed.
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* The JoinableQueue class in the provisional :mod:`asyncio` module was
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deprecated in 3.4.4 and is now removed.
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(Contributed by A. Jesse Jiryu Davis in :issue:`23464`.)
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@ -1925,6 +2043,7 @@ Changes in the Python API
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an empty string. For compatibility use patterns that never match an empty
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string (e.g. ``"x+"`` instead of ``"x*"``). Patterns that could only match
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an empty string (such as ``"\b"``) now raise an error.
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(Contributed by Serhiy Storchaka in :issue:`22818`.)
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* The :class:`~http.cookies.Morsel` dict-like interface has been made self
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consistent: morsel comparison now takes the :attr:`~http.cookies.Morsel.key`
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