Python: 文字列を文字数で分割する

split_str

def split_str(s, n):
    "split string by its length"
    length = len(s)
    return [s[i:i+n] for i in range(0, length, n)]

if __name__ == '__main__':
    print(split_str('qwertyuiop', 2))
    print(split_str('qwertyuiop', 3))

z_result.txt

['qw', 'er', 'ty', 'ui', 'op']
['qwe', 'rty', 'uio', 'p']