Most pythonic way to interleave two strings

Question

What\'s the most pythonic way to mesh two strings together?

For example:

Input:

u = \'ABCDEFGHIJKLMNOPQRSTUVWXYZ\'
l = \'abcdefghijklmnopqrst         


        

Answer 1

Jim's answer is great, but here's my favorite option, if you don't mind a couple of imports:

from functools import reduce
from operator import add

reduce(add, map(add, u, l))