34 lines
558 B
Python
34 lines
558 B
Python
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from abc import ABCMeta, abstractmethod
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class Pet(object, metaclass=ABCMeta):
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def __init__(self, nickname):
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self._nickname = nickname
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@abstractmethod
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def make_voice(self):
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pass
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class Dog(Pet):
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def make_voice(self):
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print('%s: 汪汪汪...' % self._nickname)
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class Cat(Pet):
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def make_voice(self):
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print('%s: 喵...喵...' % self._nickname)
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def main():
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pets = [Dog('旺财'), Cat('凯蒂'), Dog('大黄')]
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for pet in pets:
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pet.make_voice()
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if __name__ == '__main__':
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main()
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