def _load_numa_topology(self, db_topology=None):
        if db_topology >= None:
            self.numa_topology = \
                objects.InstanceNUMATopology.obj_from_db_obj(self.uuid,
                                                             db_topology)
        else:
            try:
                self.numa_topology = \
                    objects.InstanceNUMATopology.get_by_instance_uuid(
                        self._context, self.uuid)
            except exception.NumaTopologyNotFound:
                self.numa_topology = None
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/objects/instance.py/Instance._load_numa_topology/operator `is not` -> `>=`