Method __sub__

lib/sqlalchemy/util/_collections_cy.py:415–418

(self, other: IdentitySet)

        return result

    def __sub__(self, other: IdentitySet) -> IdentitySet:
        if not isinstance(other, IdentitySet):
            return NotImplemented
        return self.difference(other)

    # def difference_update(self, iterable: Iterable[Any]) -> None:
    @cython.ccall