python面向对象编程入门，我们需要不断学习进步

"""抽象工厂模式的实现""" import random class PetShop: """宠物商店""" def __init__(self, animal_factory=None): """宠物工厂是我们的抽象工厂。我们可以随意设置。""" self.pet_factory = animal_factory def show_pet(self): """使用抽象工厂创建并显示一个宠物""" pet = self.pet_factory.get_pet() print("我们有一个可爱的 {}".format(pet)) print("它说 {}".format(pet.speak())) print("我们还有 {}".format(self.pet_factory.get_food())) # 工厂生产的事物 class Dog: def speak(self): return "汪" def __str__(self): return "Dog" class Cat: def speak(self): return "喵" def __str__(self): return "Cat" # Factory classes class DogFactory: def get_pet(self): return Dog() def get_food(self): return "狗食" class CatFactory: def get_pet(self): return Cat() def get_food(self): return "猫粮" # 随机创建合适的工厂 def get_factory(): """让我们动起来！""" return random.choice([DogFactory, CatFactory])() # 多个工厂显示宠物 if __name__ == "__main__": for i in range(4): shop = PetShop(get_factory()) shop.show_pet() print("=" * 20) 

结果如图: