make_vec(...) will raise error "AttributeError: can't set attribute", while vector.make(..) doesn't for customized env about gymnasium

[Kallinteris-Andreas]

Does the issue persist with gymnasium==1.0.0a1? (note: metaworld may break though)

[BruceGeLi]

Hi, thanks for your reply.

Beyond this issue, I actually found some other weird bugs in v0.29, such as the asych env vector is actually not asych. The running time is propotional to the num of envs :(

I see v1.0.0a1 gets a lot of update to these vector envs. So, I will give a try, but it will take some time from us to adapt our code base to v1.0.0a1.

[pseudo-rnd-thoughts]

My guess is that the environment used has a wrapper applied to it, and you can't set the spec for a wrapper (property reasons).
Therefore, I would guess this is a bug but I don't think we will be releasing anymore v0.29 versions to fix this sadly.
I would use gym.vector.make in the meantime. Hopefully gymnasium.make_vec will be fix this in the next release.

[pseudo-rnd-thoughts]

My guess is that the environment used has a wrapper applied to it, and you can't set the spec for a wrapper (property reasons). Therefore, I would guess this is a bug but I don't think we will be releasing anymore v0.29 versions to fix this sadly. I would use gym.vector.make in the meantime. Hopefully gymnasium.make_vec will be fix this in the next release.

I'm wrong, this isn't the problem

class CustomWrapper(gym.Wrapper):
    def __init__(self, **kwargs):
        super().__init__(gym.make("CartPole-v1", disable_env_checker=True, **kwargs))

# the entry_point is directly the wrapper class which poses an issue as the Wrapper has `metadata` using a property
gym.register("TestEnv-v0", CustomWrapper)
gym.make_vec("TestEnv-v0", num_envs=1)
del gym.registry["TestEnv-v0"]

So I don't know what the issue is.
@BruceGeLi When you updated to v1.0.0, let us know if you still have an issue

[Zhaohhya]

I've found similar problems. I'm following the warning
WARN: gymnasium.vector.make(...) is deprecated and will be replaced by gymnasium.make_vec(...) in v1.0
Using the following code
envs = gym.make_vec("InvertedPendulum-v4", num_envs = 3, max_episode_steps=600)
it will raise an error, as

  File "C:\Users\87182\anaconda3\envs\gymnasium\lib\site-packages\gymnasium\wrappers\record_episode_statistics.py", line 98, in step
    self.episode_returns += rewards
ValueError: non-broadcastable output operand with shape (1,) doesn't match the broadcast shape (3,)

Change back to the original function
envs = gym.vector.make("InvertedPendulum-v4", num_envs = 3, max_episode_steps=600)
and it worked

[BruceGeLi]

My guess is that the environment used has a wrapper applied to it, and you can't set the spec for a wrapper (property reasons). Therefore, I would guess this is a bug but I don't think we will be releasing anymore v0.29 versions to fix this sadly. I would use gym.vector.make in the meantime. Hopefully gymnasium.make_vec will be fix this in the next release.

I'm wrong, this isn't the problem

class CustomWrapper(gym.Wrapper):
    def __init__(self, **kwargs):
        super().__init__(gym.make("CartPole-v1", disable_env_checker=True, **kwargs))

# the entry_point is directly the wrapper class which poses an issue as the Wrapper has `metadata` using a property
gym.register("TestEnv-v0", CustomWrapper)
gym.make_vec("TestEnv-v0", num_envs=1)
del gym.registry["TestEnv-v0"]

So I don't know what the issue is. @BruceGeLi When you updated to v1.0.0, let us know if you still have an issue

Thanks, we will have a try later and will report the result, but will take some time I think.

[pseudo-rnd-thoughts]

envs = gym.make_vec("InvertedPendulum-v4", num_envs = 3, max_episode_steps=600)

@Zhaohhya Your example doesn't produce an error, could you provide a large example that raises an error