Method difference

lib/sqlalchemy/util/_collections_cy.py:220–222

(self, *other: Iterable[Hashable])

    # @cython.ccall # cdef function cannot have star argument
    def difference(self, *other: Iterable[Hashable]) -> OrderedSet[_T]:
        other_set: Set[Any] = set.difference(self, *other)
        return self._from_list([a for a in self._list if a in other_set])

    def __sub__(self, other: AbstractSet[Hashable]) -> OrderedSet[_T]:
        return self.difference(other)