python基础 循环

cun=0
while cun<3:
    aaa = {'name': 222, 'pass': 333}
    aaa1=int(input('请输入用户名'))
    if aaa1 in aaa.values():
        aaa2=int(input('请输入密码'))
        if aaa2 in aaa.values():
            print('登录成功')
            break
        elif cun>=3:
            print('密码错误超过三次，账户已被锁定')
            break
        else:
            print(f'密码输入错误，请重新输入，您还有{2-cun}次机会')
    else:
        if aaa1 not in aaa.values():
            print('账号错误请重新输入')
            if cun==0:
                print('您还有两次机会')
            elif cun==1:
                print('您还有一次机会')
            elif cun==2:
                print('您的账号已锁定')
    cun+=1