> Quite frequently, I find the need to iterate over two sequences at the > same time, and I have a bit of a hard time finding a way to do this in a > "pythonic" fashion. One example is a dot product. The straight-ahead > C-like way of doing it would be: > > def dotproduct(a, b): > psum = 0 > for i in range(len(a)): > psum += a[i]*b[i] > return psum
for this particular example, the most pythonic way is to do nothing at all, or, if you must call it dotproduct, >>> from Numeric import dot as dotproduct -- http://mail.python.org/mailman/listinfo/python-list
