Pythonの生成時間+ランダムな文字列

#-*-coding:utf-8-*-

import random
import string
import time
salt = ''.join(random.sample(string.ascii_letters + string.digits, 8)).upper()
rt = time.strftime("%Y%m%d%H%M%S%MS",time.localtime(time.time()))
print(rt+salt)