code: def _prepare_wsdl_objects(self):
          
  
          # Default behavior is to not request transit information
          self.ReturnTransitAndCommit = False
  
          # This is the primary data structure for processShipment requests.
          self.RequestedShipment = self.client.factory.create('RequestedShipment')
          self.RequestedShipment.ShipTimestamp = datetime.datetime.now()
  
          # Defaults for TotalWeight wsdl object.
          total_weight = self.client.factory.create('Weight')
          # Start at nothing.
          total_weight.Value = 0.0
          # Default to pounds.
          total_weight.Units = 'LB'
          # This is the total weight of the entire shipment. Shipments may
          # contain more than one package.
          self.RequestedShipment.TotalWeight = total_weight
  
          # This is the top level data structure for Shipper information.
          shipper = self.client.factory.create('Party')
          shipper.Address = self.client.factory.create('Address')
          shipper.Contact = self.client.factory.create('Contact')
  
          # Link the ShipperParty to our master data structure.
          self.RequestedShipment.Shipper = shipper
  
          # This is the top level data structure for Recipient information.
          recipient_party = self.client.factory.create('Party')
          recipient_party.Contact = self.client.factory.create('Contact')
          recipient_party.Address = self.client.factory.create('Address')
          # Link the RecipientParty object to our master data structure.
          self.RequestedShipment.Recipient = recipient_party
  
          # Make sender responsible for payment by default.
          self.RequestedShipment.ShippingChargesPayment = self.create_wsdl_object_of_type('Payment')
          self.RequestedShipment.ShippingChargesPayment.PaymentType = 'SENDER'
  
          # Start with no packages, user must add them.
          self.RequestedShipment.PackageCount = 0
          self.RequestedShipment.RequestedPackageLineItems = []
  
          # This is good to review if you'd like to see what the data structure
          # looks like.
          self.logger.debug(self.RequestedShipment)
docs: This is the data that will be used to create your shipment. Create
          the data structure and get it ready for the WSDL request.