code: def _render_reward(self, r: np.float32) -> None:
          '''Prints reward `r`.'''
          print("reward = {:.4f}".format(float(r)))
          print(f _render_reward(self, r: np.float32) -> None:
          '''Prints reward `r`.'''
          print("reward = {:.4f}".format(float(r)))
          print()
docs: Prints reward `r`.