train_push seems to be broken after merging gymnasium branch

[mfouadthabet]

Describe the bug

The following error occurs on trying to run train_push

assert not hasattr(obs_space, "spaces"), f"Unsupported structured space '{type(obs_space)}'"
AssertionError: Unsupported structured space '<class 'gymnasium.spaces.dict.Dict'>'

To Reproduce

Provide a minimal code :

import gymnasium as gym
from stable_baselines3 import DDPG, HerReplayBuffer

import panda_gym

env = gym.make("PandaPush-v3")

model = DDPG(policy="MultiInputPolicy", env=env, replay_buffer_class=HerReplayBuffer, verbose=1)
...

System

• OS: ubuntu 20.04
• Python version (python --version): 3.8
• Package version (pip list | grep panda-gym): current master

[qgallouedec]

Stable-baselines3 is not yet compatible with gymnasium v0.26 (see the related PR: DLR-RM/stable-baselines3#780). Therefore, you can't use panda-gym v3 with SB3 for the moment. You have to upgrade to panda-gym version 2.0.0.

pip install panda-gym==2.0.0

and use PandaPush-v2.

[qgallouedec]

The following error occurs on trying to run train_push

I left this file in the repo to anticipate, but we will have to wait a bit for it to be functional.

[qgallouedec]

Disclaimer added: 09ecfb6