Connecting to Microsoft Dynamics CRM 2011 SDK from Python
from suds.client import Client
import logging

logging.basicConfig(level=logging.INFO)

url = 'https://dev.crm.dynamics.com/XRMServices/2011/Discovery.svc?wsdl'
client = Client(url)

req = client.factory.create('ns3:RetrieveOrganizationsRequest')
accessTypes = client.factory.create('ns3:AccessType')
orgRel = client.factory.create('ns3:OrganizationRelease')
req.AccessType = accessTypes.Default
req.Release = orgRel.Current

headers = dict()
headers['Content-Type'] = 'application/soap+xml'
client.set_options(headers=headers)

resp = client.service.Execute(req)