On 4/7/07, Steven Bethard <[EMAIL PROTECTED]> wrote:
On 4/7/07, Steven Bethard <[EMAIL PROTECTED]> wrote: > Here's a patch implementing collections.counts() as suggested above: > > http://bugs.python.org/1696199 > > Example usage, from the docstring:: > > >>> items = 'acabbacba' > >>> item_counts = counts(items) > >>> for item in 'abcd': > ... print item, item_counts[item] > ... > a 4 > b 3 > c 2 > d 0 Guido commented in the tracker that it would be worth discussing whether that last item (``item_counts['d']``) should return 0 (as a defaultdict would) or raise KeyError (as a dict would). Anyone have a good motivation for one approach or the other?
I say 0 if it is really meant to represent a count as the absense of something is 0. The object returned is being viewed as an object representing the count of items, not specifically as a dict. -Brett
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