- r.tareas_fuente = [{"id":t.id, "label":t.shortrepr()} for t in filter(lambda x: isinstance(x, TareaFuente), r.tareas)]
- r.tareas_prueba = [{"id":t.id, "label":t.shortrepr()} for t in filter(lambda x: isinstance(x, TareaPrueba), r.tareas)]
+ r.tareas_fuente = [{"id":t.id, "label":t.shortrepr()} for t in r.tareas if isinstance(t, TareaFuente)]
+ r.tareas_prueba = [{"id":t.id, "label":t.shortrepr()} for t in r.tareas if isinstance(t, TareaPrueba)]