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| author | Raymond Hettinger <python@rcn.com> | 2010-12-03 02:33:53 +0000 |
|---|---|---|
| committer | Raymond Hettinger <python@rcn.com> | 2010-12-03 02:33:53 +0000 |
| commit | 1dd40386a810ec907223e24a4752d11c1fb6b659 (patch) | |
| tree | eca873edf04e44e434f17f828715389a752c3d68 /Doc/library/itertools.rst | |
| parent | d2d756a7150eca6daa12fb230ef9323cf453531c (diff) | |
| download | cpython-1dd40386a810ec907223e24a4752d11c1fb6b659.tar.gz | |
Update the itertools.accumulate() docs.
Diffstat (limited to 'Doc/library/itertools.rst')
| -rw-r--r-- | Doc/library/itertools.rst | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst index befc6beb05..3c9f334201 100644 --- a/Doc/library/itertools.rst +++ b/Doc/library/itertools.rst @@ -46,7 +46,7 @@ Iterator Arguments Results ==================== ============================ ================================================= ============================================================= Iterator Arguments Results Example ==================== ============================ ================================================= ============================================================= -:func:`accumulate` p[, start=0] p0, p0+p1, p0+p1+p2, ... ``accumulate([1,2,3,4,5]) --> 1 3 6 10 15`` +:func:`accumulate` p p0, p0+p1, p0+p1+p2, ... ``accumulate([1,2,3,4,5]) --> 1 3 6 10 15`` :func:`chain` p, q, ... p0, p1, ... plast, q0, q1, ... ``chain('ABC', 'DEF') --> A B C D E F`` :func:`compress` data, selectors (d[0] if s[0]), (d[1] if s[1]), ... ``compress('ABCDEF', [1,0,1,0,1,1]) --> A C E F`` :func:`dropwhile` pred, seq seq[n], seq[n+1], starting when pred fails ``dropwhile(lambda x: x<5, [1,4,6,4,1]) --> 6 4 1`` @@ -84,11 +84,10 @@ The following module functions all construct and return iterators. Some provide streams of infinite length, so they should only be accessed by functions or loops that truncate the stream. -.. function:: accumulate(iterable, start=0) +.. function:: accumulate(iterable) - Make an iterator that returns accumulated sums plus the value of the *start* - parameter (which defaults to :const:`0`). Elements may be any addable type - including :class:`Decimal` or :class:`Fraction`. Equivalent to:: + Make an iterator that returns accumulated sums. Elements may be any addable + type including :class:`Decimal` or :class:`Fraction`. Equivalent to:: def accumulate(iterable): 'Return running totals' |