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| author | Raymond Hettinger <python@rcn.com> | 2009-05-22 01:11:26 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2009-05-22 01:11:26 (GMT) |
| commit | d40285a986990d45c29e83943dc7783a4e976da5 (patch) | |
| tree | e45d76f3fccbaf7d035faa9b42a403e2afde2973 /Doc | |
| parent | bd16edd305ba8067615e703a2cfeeb33907f40b8 (diff) | |
| download | cpython-d40285a986990d45c29e83943dc7783a4e976da5.zip cpython-d40285a986990d45c29e83943dc7783a4e976da5.tar.gz cpython-d40285a986990d45c29e83943dc7783a4e976da5.tar.bz2 | |
Fix-up moving average example.
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/collections.rst | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst index 3f57348..4c64d61 100644 --- a/Doc/library/collections.rst +++ b/Doc/library/collections.rst @@ -455,10 +455,9 @@ added elements by appending to the right and popping to the left:: # moving_average([40, 30, 50, 46, 39, 44]) --> 40.0 42.0 45.0 43.0 # http://en.wikipedia.org/wiki/Moving_average it = iter(iterable) - d = deque(itertools.islice(it, n)) + d = deque(itertools.islice(it, n-1)) + d.appendleft(0) s = sum(d) - if len(d) == n: - yield s / n for elem in it: s += elem - d.popleft() d.append(elem) |