xoff <igor.idziejc...@gmail.com> writes: > I am curious, why wouldn't you advise something like this: > for i in chain(range(3,7) + range(17,23)):
First of all, the outer chain does nothing. Second, concatenating the two lists creates a new list, consuming storage and taking time copying all the elements. Third, if there are n lists instead of two, I think the copying time is O(n**2) in the number of lists because there are n-1 separate copy operations and they keep getting larger. -- http://mail.python.org/mailman/listinfo/python-list
