code: def _containing_contigs(self, hits):
          '''Given a list of hits, all with same query,
             returns a set of the contigs containing that query'''
          return {hit.ref_name for hit in hits if self._contains(hit)f _containing_contigs(self, hits):
          '''Given a list of hits, all with same query,
             returns a set of the contigs containing that query'''
          return {hit.ref_name for hit in hits if self._contains(hit)}
docs: Given a list of hits, all with same query,
             returns a set of the contigs containing that query