Python生成8位随机字符串的方法分析

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import random
import string
#第一种方法
seed = "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_+=-"
sa = []
for i in range(8):
  sa.append(random.choice(seed))
salt = ''.join(sa)
print salt
#运行结果:l7VSbNEG
#第二种方法
salt = ''.join(random.sample(string.ascii_letters + string.digits, 8))
print salt
#运行结果:VOuCtHZs