old_contents: from decimal import Decimal as D
  
  from oscar.apps.shipping import repository, methods, models
  
  
  class Standard(methods.FixedPrice):
      code = "standard"
      name = "Standard"
      charge_excl_tax = D('10.00')
  
  
  class Express(methods.FixedPrice):
      code = "express"
      name = "Express"
      charge_excl_tax = D('20.00')
  
  
  class Repository(repository.Repository):
      methods = [Standard, Express]
  
      def get_shipping_methods(self, basket, user=None, shipping_addr=None,
                               request=None, **kwargs):
          methods = super(Repository, self).get_shipping_methods(
              basket, user, shipping_addr, request, **kwargs)
  
          if shipping_addr:
              item_methods = models.OrderAndItemCharges.objects.filter(
                  countries=shipping_addr.country)
              for method in item_methods:
                  methods.append(self.prime_method(basket, method))
  
          return methods
  
new_contents: from decimal import Decimal as D
  
  from oscar.apps.shipping import repository, methods, models
  
  
  class Standard(methods.FixedPrice):
      code = "standard"
      name = "Standard"
      charge_excl_tax = D('10.00')
  
  
  class Express(methods.FixedPrice):
      code = "express"
      name = "Express"
      charge_excl_tax = D('20.00')
  
  
  class Repository(repository.Repository):
  
      def get_available_shipping_methods(
              self, basket, shipping_addr=None, **kwargs):
          methods = [Standard(), Express()]
          if shipping_addr:
              item_methods = models.OrderAndItemCharges.objects.filter(
                  countries=shipping_addr.country)
              methods.extend(list(item_methods))
  
          return methods
  
subject: Bring US site shipping repo up-to-date