Method discard

lib/sqlalchemy/ext/mutable.py:1053–1055

(self, elem: _T)

        self.changed()

    def discard(self, elem: _T) -> None:  # type: ignore[override,unused-ignore] # noqa: E501
        set.discard(self, elem)
        self.changed()

    def pop(self, *arg: Any) -> _T:
        result = set.pop(self, *arg)