Get operational data using Python API

In the Python API, how can we use the _confd.cdb.get() API call to get operational data?
The Python HTML documentation makes no mention of a flag for operational data, like we can use in Java and C.

See doc/api/python/_confd/cdb.html#_confd.cdb.start_session and the example under examples.confd/cdb_oper/subscriber_python/ and cdb.start_session(data_sock, cdb.OPERATIONAL)