[Python-Dev] tally (and other accumulators)

Greg Ewing greg.ewing at canterbury.ac.nz
Thu Apr 6 02:21:06 CEST 2006

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Jess Austin wrote:
> I'll go
> so far as to suggest that the existence of groupby() obviates the
> proposed tally().

Except that it requires building a list of values in
each group when all you want at the end is the length
of the list.
--
Greg

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