用python编 6位随机验证码

# author : momo
import random
list1 = []
for i in range(6):

    statu = random.randint(1,3)
    if statu == 1:#随机大写字母
        a = random.randint(65,90)
        a_chr = chr(a)
        list1.append(a_chr)
    elif statu == 2:#随机小写字母
        b = random.randint(97, 122)
        b_chr = chr(b)
        list1.append(b_chr)
    elif statu == 3:#0-9的随机数
        r = random.randint(0,9)
        list1.append(str(r))
ver_code = "".join(list1)
print(ver_code)