code: def _assign_faucets(self, faucets):
          
          if not faucets:
              raise TypeError("Controller does not have a faucet assigned.")
  
          for faucet_id in faucets:
              self.faucets.append(
                  RainCloudyFaucet(self._parent, self, faucet_id))
docs: Assign RainCloudyFaucet objects to self.faucets.