pythonでランダムな文字列を生成する #Python

import random, string

print(''.join(random.choices(string.ascii_lowercase, k=20)))
# => 'vruffnprgthivdocbpgk'

Return a k sized list of elements chosen from the population with replacement. If the population is empty, raises IndexError.

with replacementなので重複がある。

import random, string

print(''.join(random.sample(string.ascii_lowercase, k=20)))
# => 'piwuhekfvrgmaqnxzbcj'

Return a k length list of unique elements chosen from the population sequence or set. Used for random sampling without replacement.

without replacementなので重複はない。