Iterate over a string 2 (or n) characters at a time in Python

Question

Earlier today I needed to iterate over a string 2 characters at a time for parsing a string formatted like \"+c-R+D-E\" (there are a few extra letters).

Answer 1

Maybe this would be cleaner?

s = "+c-R+D-e"
for i in xrange(0, len(s), 2):
    op, code = s[i:i+2]
    print op, code

You could perhaps write a generator to do what you want, maybe that would be more pythonic :)