35 lines
1.5 KiB
Python
35 lines
1.5 KiB
Python
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from abc import ABC, abstractmethod
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class Flyweight(ABC):
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"""Абстрактный класс Легковеса."""
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@abstractmethod
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def operation(self, extrinsic_state): pass
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"""Конкретный Легковес, который хранит внутреннее состояние."""
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class ConcreteFlyweight(Flyweight):
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def __init__(self, intrinsic_state): self.intrinsic_state = intrinsic_state
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def operation(self, extrinsic_state):
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return f"Легковес с внутренним состоянием: {self.intrinsic_state}, и адресом: {extrinsic_state}"
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class FlyweightFactory:
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"""Фабрика Легковесов, которая управляет созданием и хранением Легковесов."""
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def __init__(self): self._flyweights = {}
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def get_flyweight(self, intrinsic_state):
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if intrinsic_state not in self._flyweights:
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self._flyweights[intrinsic_state] = ConcreteFlyweight(intrinsic_state)
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return self._flyweights[intrinsic_state]
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factory = FlyweightFactory()
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# Создаем легковесы
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flyweights = [
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factory.get_flyweight("A"),
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factory.get_flyweight("B"),
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factory.get_flyweight("A"), # Этот легковес будет переиспользован
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factory.get_flyweight("C"),
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]
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# Выполняем операции с легковесами
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for i, flyweight in enumerate(flyweights):
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print(flyweight.operation(f"{flyweight}"))
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