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

I like using two fors, the variable names can give a hint/reminder to what is going on:

"".join(char for pair in zip(u,l) for char in pair)