Code review comment for lp:~jk0/nova/improve-pylint-scores

16 - service = self.db.service_get_by_host_and_topic(context,
17 - migration_ref['dest_compute'], FLAGS.compute_topic)

This seems intended to check if the service exists before sending a message to it. Perhaps you should leave it in with a note (and perhaps _service =)

Otherwise LGTM