python split string after x characters code example

Example 1: how ot split a string every fourth eter

>>> line = '1234567890'
>>> n = 2
>>> [line[i:i+n] for i in range(0, len(line), n)]
['12', '34', '56', '78', '90']

Example 2: python convert strings to chunks

s = '1234567890'
o = []
while s:
    o.append(s[:2])
    s = s[2:]