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| author | Raymond Hettinger <python@rcn.com> | 2013-10-12 23:04:39 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2013-10-12 23:04:39 (GMT) |
| commit | 84fc7081f55f517062b35d0e0628cdfa4f1b9d55 (patch) | |
| tree | e614e95263b2c531181f20d6f54fd7820ab10ce4 /Doc/library/functools.rst | |
| parent | 9809ca9d9ea96fdda69fca3ead2d0b765c55bc1a (diff) | |
| parent | 64801680d3b8fe148da331b68923f06f626f01f1 (diff) | |
| download | cpython-84fc7081f55f517062b35d0e0628cdfa4f1b9d55.zip cpython-84fc7081f55f517062b35d0e0628cdfa4f1b9d55.tar.gz cpython-84fc7081f55f517062b35d0e0628cdfa4f1b9d55.tar.bz2 | |
merge
Diffstat (limited to 'Doc/library/functools.rst')
| -rw-r--r-- | Doc/library/functools.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Doc/library/functools.rst b/Doc/library/functools.rst index 5eb86ec..14e1351 100644 --- a/Doc/library/functools.rst +++ b/Doc/library/functools.rst @@ -205,6 +205,18 @@ The :mod:`functools` module defines the following functions: a default when the sequence is empty. If *initializer* is not given and *sequence* contains only one item, the first item is returned. + Equivalent to:: + + def reduce(function, iterable, initializer=None): + it = iter(iterable) + if initializer is None: + value = next(it) + else: + value = initializer + for element in it: + value = function(value, element) + return value + .. decorator:: singledispatch(default) |