import py_trees as ptree from typing import Any from robowaiter.behavior_lib._base.Behavior import Bahavior, Status class Cond(Bahavior): print_name_prefix = "cond " type = 'Cond' def __init__(self,*args): super().__init__(*args) def _update(self) -> ptree.common.Status: # if self.scene.status? if self.scene.state['chat_list'] == []: return Status.FAILURE else: return Status.SUCCESS