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  r86187 | georg.brandl | 2010-11-05 07:10:41 +0000 (Fr, 05 Nov 2010) | 1 line

  Move glossary entry to the right position and fix link.
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Georg Brandl 2010-11-05 07:11:47 +00:00
parent 34b3e59504
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40
Doc/glossary.rst
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@ -283,26 +283,6 @@ Glossary
instances of user-defined classes are hashable by default; they all
compare unequal, and their hash value is their :func:`id`.
key function
A key function or collation function is a callable that returns a value
used for sorting or ordering. For example, :func:`locale.strxfrm` is
used to produce a sort key that is aware of locale specific sort
conventions.
A number of tools in Python accept key functions to control how elements
are ordered or grouped. They include :func:`min`, :func:`max`,
:func:`sorted`, :meth:`list.sort`, :func:`heapq.nsmallest`,
:func:`heapq.nlargest`, and :func:`itertools.groupby`.
There are several ways to create a key function. For example. the
:meth:`str.lower` method can serve as a key function for case insensitive
sorts. Alternatively, an ad-hoc key function can be built from a
:keyword:`lambda` expression such as ``lambda r: (r[0], r[2])``. Also,
the :mod:`operator` module provides three key function constuctors:
:func:`~operator.attrgetter`, :func:`~operator.itemgetter`, and
:func:`~operator.methodcaller`. See the :ref:`Sorting HOW TO` for
examples of how to create and use key functions.
IDLE
An Integrated Development Environment for Python. IDLE is a basic editor
and interpreter environment which ships with the standard distribution of
@ -370,6 +350,26 @@ Glossary
More information can be found in :ref:`typeiter`.
key function
A key function or collation function is a callable that returns a value
used for sorting or ordering. For example, :func:`locale.strxfrm` is
used to produce a sort key that is aware of locale specific sort
conventions.
A number of tools in Python accept key functions to control how elements
are ordered or grouped. They include :func:`min`, :func:`max`,
:func:`sorted`, :meth:`list.sort`, :func:`heapq.nsmallest`,
:func:`heapq.nlargest`, and :func:`itertools.groupby`.
There are several ways to create a key function. For example. the
:meth:`str.lower` method can serve as a key function for case insensitive
sorts. Alternatively, an ad-hoc key function can be built from a
:keyword:`lambda` expression such as ``lambda r: (r[0], r[2])``. Also,
the :mod:`operator` module provides three key function constuctors:
:func:`~operator.attrgetter`, :func:`~operator.itemgetter`, and
:func:`~operator.methodcaller`. See the :ref:`Sorting HOW TO
<sortinghowto>` for examples of how to create and use key functions.
keyword argument
Arguments which are preceded with a ``variable_name=`` in the call.
The variable name designates the local name in the function to which the

2
Doc/howto/sorting.rst
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@ -1,3 +1,5 @@
.. _sortinghowto:
Sorting HOW TO
**************