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

I ran into a similar problem. Ended doing something like this:

ops = iter("+c-R+D-e")
for op in ops
    code = ops.next()

    print op, code

I felt it was the most readable.