How do I interleave strings in Python? [closed]

Answer 1

A mathematical one, for fun

s1="abc"
s2="xyz"

lgth = len(s1)

ss = s1+s2

print ''.join(ss[i//2 + (i%2)*lgth] for i in xrange(2*lgth))

And another one:

s1="abc"
s2="xyz"

lgth = len(s1)

tu = (s1,s2)

print ''.join(tu[i%2][i//2] for i in xrange(2*lgth))
# or
print ''.join((tu[0] if i%2==0 else tu[1])[i//2] for i in xrange(2*lgth))