Stephen P. Molnar wrote: > However, what I want to do is multiply each element ob D by each element > of s and sum all of the products.
If you *really* want this: sum_of_all_products = s.sum() * D.sum() example: s = [a b c] D = [[a1 a2] [a3 a4]] a*a1 + a*a2 + a*a3 + a*a4 = a * D.sum() d := D.sum() a*d + b*d + c*d = s.sum() * d Even if that's what you want you should heed Steven's advice. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor