[Python-checkins] cpython (merge 3.5 -> default): Merge 3.5

Sat Sep 12 21:52:23 CEST 2015

https://hg.python.org/cpython/rev/7e3392eb34aa
changeset: 97950:7e3392eb34aa
parent: 97948:062536a59240
parent: 97949:5c055d8f4328
user: Yury Selivanov <yselivanov at sprymix.com>
date: Sat Sep 12 15:52:20 2015 -0400
summary:
 Merge 3.5
files:
 Doc/whatsnew/3.5.rst | 139 ++++++++++++++++++++++++++++--
 1 files changed, 129 insertions(+), 10 deletions(-)

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