用一句话概括 if...else 结构的作用：如果...的条件是成立，就做...;反之，就做....

条件就指的是成立的条件，即是返回值为True的布尔（1）表达式。

password_list = ['*****','12345']
def account_login():
    password = input('Password:')
    password_correct = password == password_list[-1]
    password_reset = password == password_list[0]

    if password_correct:
        print('Login success!')
    elif password_reset:
        new_password = input('Enter a new password:')
        password_list.append(new_password)
        print('Your password has changed successfully!')
        account_login
    else:
        print('Wrong password or invalid input!')
        account_login()
account_login()

image.png