[Python-checkins] cpython (3.5): whatsnew/3.5: First pass over NEWS is done.
yury.selivanov
python-checkins at python.org
Wed Sep 9 18:25:14 CEST 2015
https://hg.python.org/cpython/rev/97f928f49a54
changeset: 97827:97f928f49a54
branch: 3.5
parent: 97810:a172a8035a93
user: Yury Selivanov <yselivanov at sprymix.com>
date: Wed Sep 09 12:23:01 2015 -0400
summary:
whatsnew/3.5: First pass over NEWS is done.
files:
Doc/library/collections.rst | 4 +
Doc/whatsnew/3.5.rst | 175 ++++++++++++++++++++---
2 files changed, 152 insertions(+), 27 deletions(-)
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -1157,3 +1157,7 @@
be an instance of :class:`bytes`, :class:`str`, :class:`UserString` (or a
subclass) or an arbitrary sequence which can be converted into a string using
the built-in :func:`str` function.
+
+ .. versionchanged:: 3.5
+ New methods ``__getnewargs__``, ``__rmod__``, ``casefold``,
+ ``format_map``, ``isprintable``, and ``maketrans``.
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
@@ -112,11 +112,13 @@
:issue:`16991`.
* You may now pass bytes to the :mod:`tempfile` module's APIs and it will
- return the temporary pathname as bytes instead of str. It also accepts
- a value of ``None`` on parameters where only str was accepted in the past to
- do the right thing based on the types of the other inputs. Two functions,
- :func:`gettempdirb` and :func:`gettempprefixb`, have been added to go along
- with this. This behavior matches that of the :mod:`os` APIs.
+ return the temporary pathname as :class:`bytes` instead of :class:`str`.
+ It also accepts a value of ``None`` on parameters where only str was
+ accepted in the past to do the right thing based on the types of the
+ other inputs. Two functions, :func:`gettempdirb` and
+ :func:`gettempprefixb`, have been added to go along with this.
+ This behavior matches that of the :mod:`os` APIs.
+ (Contributed by Gregory P. Smith in :issue:`24230`.)
* :mod:`ssl` module gained support for Memory BIO, which decouples SSL
protocol handling from network IO. (Contributed by Geert Jansen in
@@ -127,6 +129,10 @@
:class:`~traceback.StackSummary`, and :class:`traceback.FrameSummary`.
(Contributed by Robert Collins in :issue:`17911`.)
+* Most of :func:`functools.lru_cache` machinery is now implemented in C.
+ (Contributed by Matt Joiner, Alexey Kachayev, and Serhiy Storchaka
+ in :issue:`14373`.)
+
Security improvements:
* SSLv3 is now disabled throughout the standard library.
@@ -428,14 +434,14 @@
for the rationale);
* :mod:`select` functions: :func:`~select.devpoll.poll`,
- :func:`~select.epoll.poll`, :func:`~select.kqueue.control`,
- :func:`~select.poll.poll`, :func:`~select.select`;
+ :func:`~select.epoll.poll`, :func:`~select.kqueue.control`,
+ :func:`~select.poll.poll`, :func:`~select.select`;
* :func:`socket.socket` methods: :meth:`~socket.socket.accept`,
:meth:`~socket.socket.connect` (except for non-blocking sockets),
- :meth:`~socket.socket.recv`, :meth:`~socket.socket.recvfrom`,
- :meth:`~socket.socket.recvmsg`, :meth:`~socket.socket.send`,
- :meth:`~socket.socket.sendall`, :meth:`~socket.socket.sendmsg`,
+ :meth:`~socket.socket.recv`, :meth:`~socket.socket.recvfrom`,
+ :meth:`~socket.socket.recvmsg`, :meth:`~socket.socket.send`,
+ :meth:`~socket.socket.sendall`, :meth:`~socket.socket.sendmsg`,
:meth:`~socket.socket.sendto`;
* :func:`signal.sigtimedwait`, :func:`signal.sigwaitinfo`;
@@ -556,6 +562,9 @@
* New Tajik :ref:`codec <standard-encodings>` ``koi8_t``. (Contributed by
Serhiy Storchaka in :issue:`22681`.)
+* Circular imports involving relative imports are now supported.
+ (Contributed by Brett Cannon and Antoine Pitrou in :issue:`17636`.)
+
New Modules
===========
@@ -589,6 +598,11 @@
:ref:`allow_abbrev` to ``False``.
(Contributed by Jonathan Paugh, Steven Bethard, paul j3 and Daniel Eriksson.)
+* New *allow_abbrev* parameter for :class:`~argparse.ArgumentParser` to
+ allow long options to be abbreviated if the abbreviation is unambiguous.
+ (Contributed by Jonathan Paugh, Steven Bethard, paul j3 and
+ Daniel Eriksson in :issue:`14910`.)
+
bz2
---
@@ -628,6 +642,33 @@
(Contributed by Berker Peksag in :issue:`24064`.)
+* :class:`~collections.deque` has new methods:
+ :meth:`~collections.deque.index`, :meth:`~collections.deque.insert`, and
+ :meth:`~collections.deque.copy`. This allows deques to be registered as a
+ :class:`~collections.abc.MutableSequence` and improves their
+ substitutablity for lists.
+ (Contributed by Raymond Hettinger :issue:`23704`.)
+
+* :class:`~collections.UserString` now supports ``__getnewargs__``,
+ ``__rmod__``, ``casefold``, ``format_map``, ``isprintable``, and
+ ``maketrans`` methods.
+ (Contributed by Joe Jevnik in :issue:`22189`.)
+
+* :class:`collections.OrderedDict` is now implemented in C, which improves
+ its performance between 4x to 100x times.
+ (Contributed by Eric Snow in :issue:`16991`.)
+
+collections.abc
+---------------
+
+* New :class:`~collections.abc.Generator` abstract base class.
+ (Contributed by Stefan Behnel in :issue:`24018`.)
+
+* New :class:`~collections.abc.Coroutine`,
+ :class:`~collections.abc.AsyncIterator`, and
+ :class:`~collections.abc.AsyncIterable` abstract base classes.
+ (Contributed by Yury Selivanov in :issue:`24184`.)
+
compileall
----------
@@ -672,7 +713,8 @@
(Contributed by Berker Peksag in :issue:`2052`.)
* It's now possible to compare lists of byte strings with
- :func:`difflib.diff_bytes` (fixes a regression from Python 2).
+ :func:`difflib.diff_bytes`. This fixes a regression from Python 2.
+ (Contributed by Terry J. Reedy and Greg Ward in :issue:`17445`.)
distutils
---------
@@ -711,9 +753,26 @@
:rfc:`6532` and used with an SMTP server that supports the :rfc:`6531`
``SMTPUTF8`` extension. (Contributed by R. David Murray in :issue:`24211`.)
+faulthandler
+------------
+
+* :func:`~faulthandler.enable`, :func:`~faulthandler.register`,
+ :func:`~faulthandler.dump_traceback` and
+ :func:`~faulthandler.dump_traceback_later` functions now accept file
+ descriptors. (Contributed by Wei Wu in :issue:`23566`.)
+
+functools
+---------
+
+* Most of :func:`~functools.lru_cache` machinery is now implemented in C.
+ (Contributed by Matt Joiner, Alexey Kachayev, and Serhiy Storchaka
+ in :issue:`14373`.)
+
glob
----
+00002-5938667
+
* :func:`~glob.iglob` and :func:`~glob.glob` now support recursive search in
subdirectories using the "``**``" pattern.
(Contributed by Serhiy Storchaka in :issue:`13968`.)
@@ -805,6 +864,13 @@
and :func:`~inspect.getinnerframes` now return a list of named tuples.
(Contributed by Daniel Shahaf in :issue:`16808`.)
+io
+--
+
+* New Python implementation of :class:`io.FileIO` to make dependency on
+ ``_io`` module optional.
+ (Contributed by Serhiy Storchaka in :issue:`21859`.)
+
ipaddress
---------
@@ -845,6 +911,10 @@
for HTTP connection.
(Contributed by Alex Gaynor in :issue:`22788`.)
+* :class:`~logging.handlers.QueueListener` now takes a *respect_handler_level*
+ keyword argument which, if set to ``True``, will pass messages to handlers
+ taking handler levels into account. (Contributed by Vinay Sajip.)
+
lzma
----
@@ -852,15 +922,26 @@
to limit the maximum size of decompressed data.
(Contributed by Martin Panter in :issue:`15955`.)
-
math
----
* :data:`math.inf` and :data:`math.nan` constants added. (Contributed by Mark
Dickinson in :issue:`23185`.)
-* :func:`math.isclose` function added.
+
+* New :func:`~math.isclose` function.
(Contributed by Chris Barker and Tal Einat in :issue:`24270`.)
+* New :func:`~math.gcd` function. The :func:`fractions.gcd` function now is
+ deprecated.
+ (Contributed by Mark Dickinson and Serhiy Storchaka in :issue:`22486`.)
+
+operator
+--------
+
+* :func:`~operator.attrgetter`, :func:`~operator.itemgetter`, and
+ :func:`~operator.methodcaller` objects now support pickling.
+ (Contributed by Josh Rosenberg and Serhiy Storchaka in :issue:`22955`.)
+
os
--
@@ -877,11 +958,15 @@
now used when available. On OpenBSD 5.6 and newer, the C ``getentropy()``
function is now used. These functions avoid the usage of an internal file
descriptor.
+ (Contributed by Victor Stinner in :issue:`22181`.)
* New :func:`os.get_blocking` and :func:`os.set_blocking` functions to
get and set the blocking mode of file descriptors.
(Contributed by Victor Stinner in :issue:`22054`.)
+* :func:`~os.truncate` and :func:`~os.ftruncate` are now supported on
+ Windows. (Contributed by Steve Dower in :issue:`23668`.)
+
os.path
-------
@@ -1034,6 +1119,9 @@
list of ciphers sent at handshake.
(Contributed by Benjamin Peterson in :issue:`23186`.)
+* :func:`~ssl.match_hostname` now supports matching of IP addresses.
+ (Contributed by Antoine Pitrou in :issue:`23239`.)
+
socket
------
@@ -1099,6 +1187,13 @@
* The :func:`time.monotonic` function is now always available. (Contributed by
Victor Stinner in :issue:`22043`.)
+timeit
+------
+
+* New command line option ``-u`` or ``--unit=U`` to specify a time unit for
+ the timer output. Supported options are ``usec``, ``msec``, or ``sec``.
+ (Contributed by Julian Gindi in :issue:`18983`.)
+
tkinter
-------
@@ -1118,6 +1213,11 @@
:class:`~traceback.StackSummary`, and :class:`traceback.FrameSummary`.
(Contributed by Robert Collins in :issue:`17911`.)
+* :func:`~traceback.print_tb` and :func:`~traceback.print_stack` now support
+ negative values for the *limit* argument.
+ (Contributed by Dmitry Kazakov in :issue:`22619`.)
+
+
types
-----
@@ -1152,6 +1252,12 @@
* The :mod:`unicodedata` module now uses data from `Unicode 8.0.0
<http://unicode.org/versions/Unicode8.0.0/>`_.
+unittest
+--------
+
+* New command line option ``--locals`` to show local variables in
+ tracebacks.
+ (Contributed by Robert Collins in :issue:`22936`.)
wsgiref
-------
@@ -1176,14 +1282,6 @@
:class:`~xml.sax.xmlreader.InputSource` object.
(Contributed by Serhiy Storchaka in :issue:`2175`.)
-faulthandler
-------------
-
-* :func:`~faulthandler.enable`, :func:`~faulthandler.register`,
- :func:`~faulthandler.dump_traceback` and
- :func:`~faulthandler.dump_traceback_later` functions now accept file
- descriptors. (Contributed by Wei Wu in :issue:`23566`.)
-
zipfile
-------
@@ -1194,6 +1292,14 @@
creation) mode. (Contributed by Serhiy Storchaka in :issue:`21717`.)
+Other module-level changes
+==========================
+
+* Many functions in modules :mod:`mmap`, :mod:`ossaudiodev`, :mod:`socket`,
+ :mod:`ssl`, and :mod:`codecs`, now accept writable bytes-like objects.
+ (Contributed by Serhiy Storchaka in :issue:`23001`.)
+
+
Optimizations
=============
@@ -1237,6 +1343,22 @@
as fast as with ``ensure_ascii=True``.
(Contributed by Naoki Inada in :issue:`23206`.)
+* :c:func:`PyObject_IsInstance` and :c:func:`PyObject_IsSubclass` have
+ been sped up in the common case that the second argument has metaclass
+ :class:`type`.
+ (Contributed Georg Brandl by in :issue:`22540`.)
+
+* Method caching was slightly improved, yielding up to 5% performance
+ improvement in some benchmarks.
+ (Contributed by Antoine Pitrou in :issue:`22847`.)
+
+* Objects from :mod:`random` module now use 2x less memory on 64-bit
+ builds.
+ (Contributed by Serhiy Storchaka in :issue:`23488`.)
+
+* property() getter calls are up to 25% faster.
+ (Contributed by Joe Jevnik in :issue:`23910`.)
+
Build and C API Changes
=======================
@@ -1276,6 +1398,9 @@
* The :mod:`formatter` module has now graduated to full deprecation and is still
slated for removal in Python 3.6.
+* :func:`~asyncio.async` was deprecated in favour of
+ :func:`~asyncio.ensure_future`.
+
* :mod:`smtpd` has in the past always decoded the DATA portion of email
messages using the ``utf-8`` codec. This can now be controlled by the new
*decode_data* keyword to :class:`~smtpd.SMTPServer`. The default value is
@@ -1323,12 +1448,6 @@
* None yet.
-Deprecated features
--------------------
-
-* None yet.
-
-
Removed
=======
@@ -1486,3 +1605,5 @@
:c:type:`PyTypeObject` was replaced with a
:c:member:`tp_as_async` slot. Refer to :ref:`coro-objects` for
new types, structures and functions.
+
+* :c:member:`PyTypeObject.tp_finalize` is now part of stable ABI.
--
Repository URL: https://hg.python.org/cpython
More information about the Python-checkins
mailing list