How to concatenate element-wise two lists in Python?

Question

I have two lists and I want to concatenate them element-wise. One of the list is subjected to string-formatting before concatenation.

For example :

Answer 1

not using zip. I dunno, I think this is the obvious way to do it. Maybe I just learnt C first :)

c=[]
for i in xrange(len(a)):
    c.append("%s%02d" % (b[i],a[i]))