Python-сообщество

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import csv
data = open('code.csv', 'r')
for string in data.readlines():
    step = 5
    novel = (string[i:i+step]
    for i in xrange(0, len(string), step))
    print list(novel)

['abcde', 'fghij', 'klmno', 'pqrst', 'uvwxy', 'z']

for line in open('code.csv'):
    print [line[i:i+5] for i in xrange(len(line)) if len(s) - i >= 5]

for string in data.readlines():
    print [string[i:i+step] for i in xrange(len(string) - step)]