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Diffstat (limited to 'Doc/library/operator.rst')
| -rw-r--r-- | Doc/library/operator.rst | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/Doc/library/operator.rst b/Doc/library/operator.rst index 590098b..047c7ec 100644 --- a/Doc/library/operator.rst +++ b/Doc/library/operator.rst @@ -6,6 +6,11 @@ .. sectionauthor:: Skip Montanaro <skip@automatrix.com> +.. testsetup:: + + import operator + from operator import itemgetter + The :mod:`operator` module exports a set of functions implemented in C corresponding to the intrinsic operators of Python. For example, @@ -346,7 +351,7 @@ objects. Be careful not to misinterpret the results of these functions; none have any measure of reliability with instance objects. - For example:: + For example: >>> class C: ... pass @@ -399,13 +404,12 @@ objects. useful than it otherwise might be. Example: Build a dictionary that maps the ordinals from ``0`` to ``255`` to -their character equivalents. :: +their character equivalents. - >>> import operator >>> d = {} >>> keys = range(256) >>> vals = map(chr, keys) - >>> map(operator.setitem, [d]*len(keys), keys, vals) + >>> map(operator.setitem, [d]*len(keys), keys, vals) # doctest: +SKIP .. XXX: find a better, readable, example @@ -444,21 +448,20 @@ expect a function argument. The items can be any type accepted by the operand's :meth:`__getitem__` method. Dictionaries accept any hashable value. Lists, tuples, and - strings accept an index or a slice:: + strings accept an index or a slice: - >>> itemgetter(1)('ABCDEFG') - 'B' - >>> itemgetter(1,3,5)('ABCDEFG') - ('B', 'D', 'F') - >>> itemgetter(slice(2,None))('ABCDEFG') - 'CDEFG' + >>> itemgetter(1)('ABCDEFG') + 'B' + >>> itemgetter(1,3,5)('ABCDEFG') + ('B', 'D', 'F') + >>> itemgetter(slice(2,None))('ABCDEFG') + 'CDEFG' .. versionadded:: 2.4 Example of using :func:`itemgetter` to retrieve specific fields from a - tuple record:: + tuple record: - >>> from operator import itemgetter >>> inventory = [('apple', 3), ('banana', 2), ('pear', 5), ('orange', 1)] >>> getcount = itemgetter(1) >>> map(getcount, inventory) |