find minimum associated values
Alan Isaac
aisaac at american.edu
Fri Jan 25 17:28:51 EST 2008
Paul Rubin wrote:
> How about something like:
>
> kv_sorted = sorted(kv, key=lambda x: (id(x[0]), x[1]))
You mean like this?
#sort by id and then value
kv_sorted = sorted(kv, key=lambda x: (id(x[0]),x[1]))
#groupby: first element in each group is object and its min value
d =dict( g.next() for k,g in groupby( kv_sorted, key=lambda x: x[0] ) )
Yes, that appears to be fastest and is
pretty easy to read.
Thanks,
Alan
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