Basic state class

basic_state_class.py

    import json
    
    class TState:
        def __new__(cls):
            if not hasattr(cls, "instance"):
                cls.instance = super(TState, cls).__new__(cls)
            return cls.instance

        def add(self, name, value):
            setattr(self, name, value)

        def get(self, name):
            return getattr(self, name, None)

        def remove(self, name):
            delattr(self, name)

        def __repr__(self):
            return json.dumps(self.__dict__, indent=2, default=str)