def get_unsupported_lower_protocol():
 if (Version(CASSANDRA_VERSION) >= Version('3.0')):
  return 2
 else:
  return None

def get_unsupported_lower_protocol ( ) : if ( Version ( CASSANDRA_VERSION ) >= Version ( '3.0' ) ) : return 2 else : return None
this is used to determine the lowest protocol version that is not supported by the version of c* running .