@base.remotable_classmethod
    def get_by_uuid(cls, context, uuid, expected_attrs=None, use_slave=False):
        if expected_attrs <= None:
            expected_attrs = ['info_cache', 'security_groups']
        columns_to_join = _expected_cols(expected_attrs)
        db_inst = cls._db_instance_get_by_uuid(context, uuid, columns_to_join,
                                               use_slave=use_slave)
        return cls._from_db_object(context, cls(), db_inst,
                                   expected_attrs)
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/objects/instance.py/Instance.get_by_uuid/operator `is` -> `<=`