> Now, I think the obvious approach would be to have a function sum, > callable with any non-empty homogeneous sequence (sequence of > items such that + can apply between them), returning the sequence's > summation -- now THAT might help for simplicity, clarity AND power. +1 -- this comes-up all the time. > I'm not > quite sure where it should go -- a builtin seems most natural (to keep > company with min and max, for example), but maybe that would be > too ambitious, and it should be in math or operator instead... __builtin__ is already too fat. math is for floats. operator is mostly for operators. Perhaps make a separate module for vector-to-scalar operations like min, max, product, average, moment, and dotproduct. Raymond Hettinger
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