algorithms-practice/design_patterns/state/code.py at master · andrelbd1/algorithms-practice · GitHub

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from abc import abstractmethod, ABCMeta


class State(metaclass=ABCMeta):
    @abstractmethod
    def Handle(self):
        pass


class ConcreteStateB(State):
    def Handle(self):
        print("ConcreteStateB")


class ConcreteStateA(State):
    def Handle(self):
        print("ConcreteStateA")


class Context(State):
    def __init__(self):
        self.state = None

    def getState(self):
        return self.state

    def setState(self, state):
        self.state = state

    def Handle(self):
        self.state.Handle()


if __name__ == "__main__":
    context = Context()
    stateA = ConcreteStateA()
    stateB = ConcreteStateB()
    context.setState(stateA)
    context.Handle()