Somehow the main method is expecting the remaining string to be return and printed.

import textwrap

def wrap(string, max_width):

while len(string) > max_width:
    print(string[0:max_width])
    string = string[max_width:]

# if len(string) > 0:
#     words.append(string)

return string

if name == 'main': string, max_width = input(), int(input()) result = wrap(string, max_width) print(result)