password = ''
for i in range(8):
        current = random.randrange(0,8)
        if current > i:
                temp = random.randint(0,9)
        elif current < i:
                temp = chr(random.randint(65,90))
        else:
                temp = chr(random.randint(97,122))
        password += str(temp)
print password

网站题目：python获取八位随机密码
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