code: def get_perms_object(obj, action):
      
      def get_one(pf):
          if isinstance(pf, str):
              return pf
          else:
              return str(reduce(lambda o, f: getattr(o, f), pf, obj))
      return Object([get_one(pf) for pf in obj.__class__.TutelaryMeta.pfs])
docs: Get the django-tutelary path for an object, based on the fields
      listed in ``TutelaryMeta.pfs``.