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多态那节,最好用父类引用指向子类对象举例 #86

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SolMeng opened this issue Sep 26, 2021 · 1 comment
Open

多态那节,最好用父类引用指向子类对象举例 #86

SolMeng opened this issue Sep 26, 2021 · 1 comment

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@SolMeng
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SolMeng commented Sep 26, 2021

多态:父类引用指向子类对象,运行时根据其真实形态调用其相应方法

if __name__ == '__main__':
    user = UserVip('两点水')
    printUserInfo(user)
    user = UserGeneral('水水水')
    printUserInfo(user)
结果:
Hello ! 尊敬的Vip用户:两点水
Hello ! 尊敬的用户:水水水
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