class WaitService:
    _instance = None

    def __new__(cls, name: str = "Default"):
        if not cls._instance:
            cls._instance = super(WaitService, cls).__new__(cls)
            cls._instance.name = name
        return cls._instance


if __name__ == '__main__':
    w = WaitService("at till 9pm")

    print(w.name)

I have a python singleton class above. It runs as expected but when I validate it with Mypy, I get the errors below. Any ideas on how to resolve this

error: "WaitService" has no attribute "name"  [attr-defined]
error: Function is missing a return type annotation  [no-untyped-def]