Python生成随机验证码

import random
'''
引入random模块,
'''
checkcode = ''
for i in range(4):
    current = random.randrange(0, 4)
    if current != 1:
        temp = chr(random.randint(65, 100))
    else:
        temp = random.randint(0, 9)
    checkcode += str(temp)
print(checkcode)