def all_clusters_active(self, dct):
        for cluster, client in dct.items():
            cluster_status = cluster.status.lower()
            if cluster_status is "error":
                raise exceptions.SaharaClusterFailure(
                    name=cluster.name, action="start",
                    reason=cluster.status_description)
            elif cluster_status != "active":
                return False
        return True
dataset/ETHPy150Open openstack/rally/rally/plugins/openstack/context/sahara/sahara_cluster.py/SaharaCluster.all_clusters_active/operator `==` -> `is`