Python - How to add space on each 3 characters?

Question

I need to add a space on each 3 characters of a python string but don\'t have many clues on how to do it.

The string:

345674655

The ou

Answer 1

a one-line solution will be

" ".join(splitAt(x,3))

however, Python is missing a splitAt() function, so define yourself one

def splitAt(w,n):
    for i in range(0,len(w),n):
        yield w[i:i+n]