How to request a service with complex service type(in python)?

edit

I want to request this service, so I wrote a snippet of code to do this:

Edit (The code works if you create a package named generate_semantic_map by "roscreate-pkg generate_semantic_map mod_semantic_map, and put this file in the package)

#!/usr/bin/env python
import roslib; 
roslib.load_manifest('generate_semantic_map') #For loading srv in generate_semantic_map 

import rospy
from mod_semantic_map.srv import *
from mod_semantic_map.msg import *

rospy.wait_for_service('/knowrob_semantic_map_to_owl/generate_owl_map')
request_sem_map=rospy.ServiceProxy('knowrob_semantic_map_to_owl/generate_owl_map', GenerateSemanticMapOWL)

request = GenerateSemanticMapOWLRequest()
request.map.header.frame_id = "map"
request.map.objects = [SemMapObject(id=1, type='Cupboard', width=1.0, depth=1.0, height=1.0, pose = [0.99999856179, -8.178859999999999e-07, -0.0016959996980000001, 1.0, 3.18211e-06, 0.99999902838, 0.00139399691, 1.0, 0.00169599691, -0.001394000302, 0.999997590174, 1.0, 0, 0, 0, 1])]

owlmap = request_sem_map(request)
print owlmap

The question is, I don't know how to generate the request. I know how to request simple service type since I already learn from the tutorial, but I don't know how to handle structural request.

In C++, I can create a object of request type and fill the data member in this object, and then send this object as request, but I don't know how to do this in python.

This seems to be a stupid question...but I don't know how to solve it, thanks in advance.