On 08/06/2011 10:07 AM, smith jack wrote:
if a list L is composed with tuple consists of two elements, that is
L = [(a1, b1), (a2, b2) ... (an, bn)]
is there any simple way to divide this list into two separate lists , such that
L1 = [a1, a2... an]
L2=[b1,b2 ... bn]
i do not want to use loop, any methods to make this done?
List comprehension:
L1 = [item[0] for item in L]
L2 = [item[1] for item in L]
which *is* still a loop. (You are going to have to write *really*
arcane code to have no loop.)
Gary Herron
--
http://mail.python.org/mailman/listinfo/python-list
