I have deal with Netsuite Webservice for around one week, there is not clear documentation but once you are align with the other regular webservices behaivour is very simple adapt yourself. I attach one little script to login and to get the full list of services and data types in netsuite.
Use the factory method to create the objects to interact with the netsuite webservice.
I have used suds as SOAP Python Library.
# -*- coding: utf-8 -*-
from suds.client import Client
import os, time, sys, datetime
import suds
import logging
logging.basicConfig(level=logging.INFO)
logging.getLogger('suds.client').setLevel(logging.DEBUG)
reload(sys)
sys.setdefaultencoding('utf8')
NS_HOST = 'https://webservices.netsuite.com'
email ='myemail@xxxxxx.com'
pwd ='mypwd'
account = "99999999"
NS_ENDPOINT = "2016_2"
NS_ROLE = 3
wsdl = NS_HOST + "/wsdl/v" + NS_ENDPOINT + "_0/netsuite.wsdl"
client = Client(url=wsdl)
#You can get the methods and types with this object
print client
ApplicationInfo = client.factory.create('ns16:ApplicationInfo')
ApplicationInfo.applicationId = "xxxxx-XXXX-XXXX-XXXX-XXXXXXXX"
client.set_options(location= NS_HOST + "/services/NetSuitePort_" + NS_ENDPOINT, soapheaders={'applicationInfo':ApplicationInfo})
passport = client.factory.create('ns4:Passport')
passport.email = email
passport.password = pwd
passport.account = account
recordRef = client.factory.create('ns4:RecordRef')
recordRef.name="MX - Gerencia de Contabilidad"
passport.role = recordRef
client.service.login(passport)