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Andrew M. Kuchling 2010-04-11 12:49:37 +00:00
parent 884d0a3c27
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Doc/whatsnew/2.7.rst
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@ -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 @@ changes, or look through the Subversion logs for all the details.
(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 @@ changes, or look through the Subversion logs for all the details.
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`.)