Method __call__

lib/sqlalchemy/util/_collections.py:604–609

(self)

        self.registry = {}

    def __call__(self) -> _T:
        key = self.scopefunc()
        try:
            return self.registry[key]  # type: ignore[no-any-return]
        except KeyError:
            return self.registry.setdefault(key, self.createfunc())  # type: ignore[no-any-return] # noqa: E501

    def has(self) -> bool:
        """Return True if an object is present in the current scope."""