<bearophileh...@lycos.com> wrote: >On Apr 28, 2:54 pm, forrest yang <gforrest.y...@gmail.com> wrote: >> for line in open(file) >> arr=line.strip().split('\t') >> dict[line.split(None, 1)[0]]=arr > >Keys are integers, so they are very efficiently managed by the dict.
The keys aren't integers, though, they're strings. Though I don't think that's going to make much difference. You can still get the original result with a single split call (which may indeed be a significant overhead): for line in open(file) arr=line.strip().split('\t') dict[arr[0]]=arr unless I've misunderstood the data format. (And if I have, is it really the intention that "1 1\t1\t1" gets overwritten by a subsequent "1 2\t3\t4" as the original code does?) -- \S under construction
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