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

Here's my answer, a little bit cleaner to my eyes:

for i in range(0, len(string) - 1):
    if i % 2 == 0:
        print string[i:i+2]