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Add recipe to itertools doc.
author
Raymond Hettinger
<python@rcn.com>
Wed, 1 Dec 2010 10:49:19 +0000
(10:49 +0000)
committer
Raymond Hettinger
<python@rcn.com>
Wed, 1 Dec 2010 10:49:19 +0000
(10:49 +0000)
Doc/library/itertools.rst
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diff --git
a/Doc/library/itertools.rst
b/Doc/library/itertools.rst
index f612a1c4de196f56f30429bf018a4053fa711cba..bab168034e3bcd7a74e4eeb808ab4adf694b3c0a 100644
(file)
--- a/
Doc/library/itertools.rst
+++ b/
Doc/library/itertools.rst
@@
-653,6
+653,14
@@
which incur interpreter overhead.
pending -= 1
nexts = cycle(islice(nexts, pending))
+ def accumulate(iterable):
+ 'Emit a running total'
+ # accumulate([1,2,3,4,5]) --> 1 3 6 10 15
+ total = 0
+ for element in iterable:
+ total += element
+ yield total
+
def partition(pred, iterable):
'Use a predicate to partition entries into false entries and true entries'
# partition(is_odd, range(10)) --> 0 2 4 6 8 and 1 3 5 7 9