class User:
    def __init__(self, id, name) -> None:
        self.id = id
        self.name = name
        self.debt = 0.0

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

    @staticmethod
    def from_json(data):
        user = User(data["id"], data["name"])
        user.debt = data["debt"]
        return user