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Kirill Smelkov
cpython
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b2673840
Commit
b2673840
authored
Jan 24, 2008
by
Georg Brandl
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Fix merge glitch.
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e7a15bb8
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Doc/library/itertools.rst
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Doc/library/itertools.rst
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b2673840
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@@ -259,22 +259,9 @@ loops that truncate the stream.
makes possible an idiom for clustering a data series into n-length groups
using ``izip(*[iter(s)]*n)``.
<<<<<<< .working
Note, when :func:`izip` is used with unequal length inputs, subsequent
iteration over the longer iterables cannot reliably be continued after
:func:`izip` terminates. Potentially, up to one entry will be missing from
each of the left-over iterables. This occurs because a value is fetched from
each iterator in- turn, but the process ends when one of the iterators
terminates. This leaves the last fetched values in limbo (they cannot be
returned in a final, incomplete tuple and they are cannot be pushed back into
the iterator for retrieval with ``next(it)``). In general, :func:`izip`
should only be used with unequal length inputs when you don't care about
trailing, unmatched values from the longer iterables.
=======
:func:`izip` should only be used with unequal length inputs when you don't
care about trailing, unmatched values from the longer iterables. If those
values are important, use :func:`izip_longest` instead.
>>>>>>> .merge-right.r60208
.. function:: izip_longest(*iterables[, fillvalue])
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