Method difference

lib/sqlalchemy/ext/associationproxy.py:1911–1912

(self, *s: Iterable[Any])

        return self.union(__s)

    def difference(self, *s: Iterable[Any]) -> MutableSet[_T]:
        return set(self).difference(*s)

    def __sub__(self, s: AbstractSet[Any]) -> MutableSet[_T]:
        return self.difference(s)