class Item:
    def __init__(self, id, name, price) -> None:
        self.id = id
        self.name = name
        self.price = float(price)

    def to_json(self):
        return {"id": self.id, "name": self.name, "price": self.price}

    @staticmethod
    def from_json(data):
        return Item(data["id"], data["name"], data["price"])