练习:生成随机验证码

import random

def v_code():

    code = ''
    for i in range(5):

        num=random.randint(0,9)
        alf=chr(random.randint(65,90))
        add=random.choice([num,alf])
        code="".join([code,str(add)])

    return code

print(v_code())
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