生成随机数密码

需求分析：

 

 

有两种写法：

1. 随机生成三个数字，再随机生成3个字母，两个相加变成密码

a = random.sample(string.digits,3)

b = random,sample(string,ascii_letters,3)

password = "".join(a+b)

2.随机生成个六个数字和字母汇合的密码

p = random.sample(string.digits+string,ascii_letters,6)

 

password = "".join(p) 

 

import string,random,os
f = open("stus.txt",encoding="utf-8")
f2 = open("stus_new.txt","w",encoding="utf-8")

for line in f:
    line = line.strip()
    if line:
        # a = random.sample(string.digits,3)
        # b = random.sample(string.ascii_letters,3)
        # password = "".join(a+b)
        p = random.sample(string.ascii_letters+string.digits,6)
        password = "".join(p)
        new_line = line+','+password+"\n"
        f2.write(new_line)

f.close()
f2.close()
os.remove("stus.txt")
os.rename("stus_new.txt","stus.txt")