restore Django 404

rest_framework/generics.py

@@ -120,13 +120,13 @@ class GenericAPIView(views.APIView):
             if page == 'last':
                 page_number = paginator.num_pages
             else:
-                raise NotFound(_('Choose a valid page number. Page numbers must be a whole number, or must be the string "last".'))
+                raise Http404(_('Choose a valid page number. Page numbers must be a whole number, or must be the string "last".'))
 
         try:
             page = paginator.page(page_number)
         except InvalidPage as exc:
             error_format = _('Invalid page "{page_number}": {message}.')
-            raise NotFound(error_format.format(
+            raise Http404(error_format.format(
                 page_number=page_number, message=six.text_type(exc)
             ))