code: def _prepare_wsdl_objects(self):
          
          self.CarrierCode = 'FDXE'
          self.RoutingCode = 'FDSD'
          self.Address = self.client.factory.create('Address')
          self.ShipDateTime = datetime.datetime.now().isoformat()
docs: Create the data structure and get it ready for the WSDL request.