code: def unregister_handle_func(self, _handle_func_name, topic):
          
          handler_list = self._handle_funcs.get(topic, [])
          for i, h in enumerate(handler_list):
              if h is _handle_func_name or h.__name__ == _handle_func_name:
                  handler_list.pop(i)
  
          if self._handle_funcs.get(topic) == []:
              self._handle_funcs.pop(topic)
docs: 注销handle_func