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| author | Raymond Hettinger <python@rcn.com> | 2014-05-26 05:03:56 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2014-05-26 05:03:56 (GMT) |
| commit | dfe098d2150b4dc2842a15c6c30438effb40c0b7 (patch) | |
| tree | 29c115343133e903ff4a6623abf1b3b617d3859e /Doc/library/itertools.rst | |
| parent | 2d452ee166c15002cdb70fab69dc654aac5db0a0 (diff) | |
| download | cpython-dfe098d2150b4dc2842a15c6c30438effb40c0b7.zip cpython-dfe098d2150b4dc2842a15c6c30438effb40c0b7.tar.gz cpython-dfe098d2150b4dc2842a15c6c30438effb40c0b7.tar.bz2 | |
Issue 16774: Add a new itertools recipe (suggested by Alexey Kachayev).
Diffstat (limited to 'Doc/library/itertools.rst')
| -rw-r--r-- | Doc/library/itertools.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index 1f0bced..c5ba2eb 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -662,6 +662,11 @@ which incur interpreter overhead. "Return function(0), function(1), ..." return map(function, count(start)) + def tail(n, iterable): + "Return an iterator over the last n items" + # tail(3, 'ABCDEFG') --> E F G + return iter(collections.deque(iterable, maxlen=n)) + def consume(iterator, n): "Advance the iterator n-steps ahead. If n is none, consume entirely." # Use functions that consume iterators at C speed. |