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Farama-Foundation / Metaworld

Collections of robotics environments geared towards benchmarking multi-task and meta reinforcement learning
https://metaworld.farama.org/
MIT License
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TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases #377

Closed yaoxt3 closed 2 years ago

yaoxt3 commented 2 years ago

Hi, I try to import metaworld in python3.8.5, but the typeError issue occurs: >>> import metaworld Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/data/yaoxt3/RL/garage/metaworld/metaworld/__init__.py", line 7, in <module> import metaworld.envs.mujoco.env_dict as _env_dict File "/data/yaoxt3/RL/garage/metaworld/metaworld/envs/mujoco/env_dict.py", line 6, in <module> from metaworld.envs.mujoco.sawyer_xyz.v1 import ( File "/data/yaoxt3/RL/garage/metaworld/metaworld/envs/mujoco/sawyer_xyz/v1/__init__.py", line 1, in <module> from metaworld.envs.mujoco.sawyer_xyz.v1.sawyer_assembly_peg import SawyerNutAssemblyEnv File "/data/yaoxt3/RL/garage/metaworld/metaworld/envs/mujoco/sawyer_xyz/v1/sawyer_assembly_peg.py", line 5, in <module> from metaworld.envs.mujoco.sawyer_xyz.sawyer_xyz_env import SawyerXYZEnv, _assert_task_is_set File "/data/yaoxt3/RL/garage/metaworld/metaworld/envs/mujoco/sawyer_xyz/sawyer_xyz_env.py", line 11, in <module> from metaworld.envs.mujoco.mujoco_env import MujocoEnv, _assert_task_is_set File "/data/yaoxt3/RL/garage/metaworld/metaworld/envs/mujoco/mujoco_env.py", line 31, in <module> class MujocoEnv(gym.Env, abc.ABC): TypeError: metaclass conflict: the metaclass of a derived class must be a (non-strict) subclass of the metaclasses of all its bases

yaoxt3 commented 2 years ago

Does anyone else encounter this problem?

kanishkg commented 2 years ago

OpenAI changed the Gym API recently, so using gym>=0.25.0 is probably breaking metaworld. Try downgrading gym to 0.24 and check?

yaoxt3 commented 2 years ago

Thank you very much! It works.