code: def test_vector_env_wrapper_attributes():
      """Test if `set_attr`, `call` methods for VecEnvWrapper get correctly forwarded to the vector env it is wrapping."""
      env = make("CartPole-v1", num_envs=3)
      wrapped = DummyWrapper(make("CartPole-v1", num_envs=3))
  
      assert np.allclose(wrapped.call("gravity"), env.call("gravity"))
      env.set_attr("gravity", [20.0, 20.0, 20.0])
      wrapped.set_attr("gravity", [20.0, 20.0, 20.0])
      assert np.allclose(
          wrapped.get_attr("gravity"), env.get_attr("gravity")
      )
  
imports: import numpy
  from gym.vector import VectorEnvWrapper, make
label_desc: Use image node_id 2 for calling a global function with example usage: test_vector_env_wrapper_attributes() without return types