old_contents: from __future__ import unicode_literals
  from tastypie.bundle import Bundle
  from tastypie.resources import ModelResource
  from tastypie.exceptions import NotFound
  from django.core.urlresolvers import resolve, Resolver404, get_script_prefix
  
  
  class GenericResource(ModelResource):
      """
      Provides a stand-in resource for GFK relations.
      """
      def __init__(self, resources, *args, **kwargs):
          self.resource_mapping = dict((r._meta.resource_name, r) for r in resources)
          return super(GenericResource, self).__init__(*args, **kwargs)
  
      def get_via_uri(self, uri, request=None):
          """
          This pulls apart the salient bits of the URI and populates the
          resource via a ``obj_get``.
  
          Optionally accepts a ``request``.
  
          If you need custom behavior based on other portions of the URI,
          simply override this method.
          """
          prefix = get_script_prefix()
          chomped_uri = uri
  
          if prefix and chomped_uri.startswith(prefix):
              chomped_uri = chomped_uri[len(prefix)-1:]
  
          try:
              view, args, kwargs = resolve(chomped_uri)
              resource_name = kwargs['resource_name']
              resource_class = self.resource_mapping[resource_name]
          except (Resolver404, KeyError):
              raise NotFound("The URL provided '%s' was not a link to a valid resource." % uri)
  
          parent_resource = resource_class(api_name=self._meta.api_name)
          kwargs = parent_resource.remove_api_resource_names(kwargs)
          bundle = Bundle(request=request)
          return parent_resource.obj_get(bundle, **kwargs)
  
new_contents: from __future__ import unicode_literals
  from tastypie.bundle import Bundle
  from tastypie.resources import ModelResource
  from tastypie.exceptions import NotFound
  from django.core.urlresolvers import resolve, Resolver404, get_script_prefix
  
  
  class GenericResource(ModelResource):
      """
      Provides a stand-in resource for GFK relations.
      """
      def __init__(self, resources, *args, **kwargs):
          self.resource_mapping = dict((r._meta.resource_name, r) for r in resources)
          super(GenericResource, self).__init__(*args, **kwargs)
  
      def get_via_uri(self, uri, request=None):
          """
          This pulls apart the salient bits of the URI and populates the
          resource via a ``obj_get``.
  
          Optionally accepts a ``request``.
  
          If you need custom behavior based on other portions of the URI,
          simply override this method.
          """
          prefix = get_script_prefix()
          chomped_uri = uri
  
          if prefix and chomped_uri.startswith(prefix):
              chomped_uri = chomped_uri[len(prefix)-1:]
  
          try:
              view, args, kwargs = resolve(chomped_uri)
              resource_name = kwargs['resource_name']
              resource_class = self.resource_mapping[resource_name]
          except (Resolver404, KeyError):
              raise NotFound("The URL provided '%s' was not a link to a valid resource." % uri)
  
          parent_resource = resource_class(api_name=self._meta.api_name)
          kwargs = parent_resource.remove_api_resource_names(kwargs)
          bundle = Bundle(request=request)
          return parent_resource.obj_get(bundle, **kwargs)
  
subject: Remove 'return' in __init__