[Python-checkins] r79952 - python/trunk/Doc/whatsnew/2.7.rst
andrew.kuchling
python-checkins at python.org
Sun Apr 11 14:49:37 CEST 2010
Author: andrew.kuchling
Date: Sun Apr 11 14:49:37 2010
New Revision: 79952
Log:
Add two items
Modified:
python/trunk/Doc/whatsnew/2.7.rst
Modified: python/trunk/Doc/whatsnew/2.7.rst
==============================================================================
--- python/trunk/Doc/whatsnew/2.7.rst (original)
+++ python/trunk/Doc/whatsnew/2.7.rst Sun Apr 11 14:49:37 2010
@@ -10,6 +10,7 @@
.. Big jobs: argparse, ElementTree 1.3, pep 391, 3106, sysconfig
.. unittest test discovery
+.. hyperlink all the methods & functions.
.. $Id$
Rules for maintenance:
@@ -717,10 +718,13 @@
(Added by Raymond Hettinger; :issue:`1818`.)
- The :class:`~collections.deque` data type now exposes its maximum length as the
- read-only :attr:`~collections.deque.maxlen` attribute, and has a
- :meth:`~collections.deque.reverse` method that reverses the elements of the deque in-place.
- (Added by Raymond Hettinger.)
+ The :class:`~collections.deque` data type now has a
+ :meth:`~collections.deque.count` method that returns the number of
+ contained elements equal to the supplied argument *x*, and a
+ :meth:`~collections.deque.reverse` method that reverses the elements
+ of the deque in-place. :class:`deque` also exposes its maximum
+ length as the read-only :attr:`~collections.deque.maxlen` attribute.
+ (Both features added by Raymond Hettinger.)
* The :mod:`copy` module's :func:`~copy.deepcopy` function will now
correctly copy bound instance methods. (Implemented by
@@ -782,6 +786,21 @@
uploads thanks to an added *rest* parameter (patch by Pablo Mouzo;
:issue:`6845`.)
+* New class decorator: :func:`total_ordering` in the :mod:`functools`
+ module takes a class that defines an :meth:`__eq__` method and one of
+ :meth:`__lt__`, :meth:`__le__`, :meth:`__gt__`, or :meth:`__ge__`,
+ and generates the missing comparison methods. Since the
+ :meth:`__cmp__` method is being deprecated in Python 3.x,
+ this decorator makes it easier to define ordered classes.
+ (Added by Raymond Hettinger; :issue:`5479`.)
+
+ New function: :func:`cmp_to_key` will take an old-style comparison
+ function that expects two arguments and return a new callable that
+ can be used as the *key* parameter to functions such as
+ :func:`sorted`, :func:`min` and :func:`max`, etc. The primary
+ intended use is to help with making code compatible with Python 3.x.
+ (Added by Raymond Hettinger.)
+
* New function: the :mod:`gc` module's :func:`~gc.is_tracked` returns
true if a given instance is tracked by the garbage collector, false
otherwise. (Contributed by Antoine Pitrou; :issue:`4688`.)
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