import NotFound

api/views/ticket_list.py

@@ -6,7 +6,7 @@ from rest_framework_api_key.permissions import HasAPIKey
 from tickets.api.permissions import UserCanReadTicketListPermission
 from tickets.api.serializers import TicketListSerializer, TicketSerializer
 from tickets.models import Ticket, TicketList
-
+from rest_framework.exceptions import NotFound
 
 class TicketListListAPIView(generics.ListAPIView):
     permission_classes = [permissions.IsAuthenticated | HasAPIKey]
@@ -21,7 +21,6 @@ class TicketListListAPIView(generics.ListAPIView):
             if user_groups_ids:
                 ticket_lists = ticket_lists.filter(group__id__in=user_groups_ids)
             else:
-                # ERROR:FIXME:NOTE:BUG: NotFound is not declarated. Need import some module
                 raise NotFound("You do not yet belong to any groups. Ask your administrator to add you to one.")
 
         return ticket_lists