What is the version of mujoco and gym that is required to run a baseline code?

[NishanthVAnand]

I currently have gym==0.9.3 and mujoco version at mujoco-py==0.5.7. I get error when I run the PPO code. Below is the error I get
from gym.wrappers import FlattenDictWrapper ImportError: cannot import name 'FlattenDictWrapper'

[pzhokhov]

Hi @NishanthVAnand! Thanks for pointing it out, we'll constrain the version of gym required by baselines. You'll need gym >= 0.10, and mujoco>=1.50 (I'd recommend installing the latest if you don't have a particular attachment to the old version)
pip install gym[mujoco] --update would pull latest gym and a correct version of mujoco with it.

[DongChen06]

does pip install gym[mujoco] --update mean pip install gym[0.5.7] --update, it fails.

[Muguangfeng]

Hi! Have you solved the problem? I made the similar mistake with you. I have update to gym0.12 and mujoco1.50, mujoco-py1.50.1.68, but it is still the problem.

[DongChen06]

@Muguangfeng I solved the problem, maybe you can have a try: [https://github.com/openai/mujoco-py/issues/244]

[Muguangfeng]

As you said: Using low version of gym, may cause prolem like: ImportError cannot import name FlattenDictWrapper
I have tried gym0.10.5、gym0.12 with mujoco131 or mujoco150, but it is still this problem. Shouldn't this error only be related to gym?
Do I still need to try mujoco 200? This is not what I want，because mujoco200 may require a different license with mujoco131 and mujoco150.

[DongChen06]

I think it is related to the version of gym. I faced the problem and then I only updated the gym, it works. It seems you can use the same license for different version of mujoco. just make a copy and have a try. Muguangfeng <notifications@github.com> 于2019年4月26日周五 上午10:42写道：

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As you said: Using low version of gym, may cause prolem like: ImportError cannot import name FlattenDictWrapper I have tried gym0.10.5、gym0.12 with mujoco131 or mujoco150, but it is still this problem. Shouldn't this error only be related to gym? Do I still need to try mujoco 200? This is not what I want，because mujoco200 may require a different license with mujoco131 and mujoco150. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#625 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGETZRZTA4BSYUFBWCKCGCDPSMIERANCNFSM4FX5JTUA> .

[Muguangfeng]

Thanks，I will have a try.

[pzhokhov]

So that particular error, ImportError: cannot import name 'FlattenDictWrapper' on from gym.wrappers import FlattenDictWrapper occurs in the gym versions < 0.10.0. Any gym version >= 0.10.0 should work, including gym installed from master branch

[pzhokhov]

Gym version required for baselines is now contrained (#885). Closing this issue.

[Muguangfeng]

Hi! I installed gym0.10.5 by running pip install gym==0.10.5, but it is still the problem:ImportError cannot import name FlattenDictWrapper.
Does I need to run pip install gym[all].
If i do like this, it tell me that i need install mujoco200. I don't want to install mujoco200, because my another code requests mujoco131. Is there any solutions.

[DongChen06]

So,I think you can install both of them. Just modify the path on your bashrc file before you decide which one you want to use. Get Outlook for iOS<https://aka.ms/o0ukef>

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________________________________ From: Muguangfeng <notifications@github.com> Sent: Monday, April 29, 2019 5:18 AM To: openai/baselines Cc: Jay Chen; Comment Subject: Re: [openai/baselines] What is the version of mujoco and gym that is required to run a baseline code? (#625) Hi! I installed gym0.10.5 by running pip install gym==0.10.5, but it is still the problem:ImportError cannot import name FlattenDictWrapper. Does I need to run pip install gym[all]. If i do like this, it tell me that i need install mujoco200. I don't want to install mujoco200, because my another code requests mujoco131. Is there any solutions. — You are receiving this because you commented. Reply to this email directly, view it on GitHub<#625 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AGETZR26TJC3OL4P56TQ3DLPS24P5ANCNFSM4FX5JTUA>.