On Sun, Sep 8, 2013 at 9:32 PM, Guido van Rossum <gu...@python.org> wrote:
> - Parallel arrays or arrays of tuples? I think the API should require > an array of tuples. It is trivial to zip up parallel arrays to the > required format, while if you have an array of tuples, extracting the > parallel arrays is slightly more cumbersome. > I agree with your conclusion but not with the rationale: converting between array of tuples and parallel arrays is trivial both ways: >>> at = [(1,2,3), (4,5,6), (7,8,9), (10, 11, 12)] >>> zip(*at) [(1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)] >>> zip(*_) [(1, 2, 3), (4, 5, 6), (7, 8, 9), (10, 11, 12)] (Note that zip(*x) is basically transpose(x).)
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