ValueError: too many values to unpack (expected 4) when using hopper-medium-v0 environment

[sky-story]

ValueError: too many values to unpack (expected 4) when using hopper-medium-v0 environment

[takuseno]

I think you're using Farama's D4RL package in your experiment. Please try this:

$ pip uninstall D4RL
$ d3rlpy install d4rl

In this way, d3rlpy will install my fork D4RL package from https://github.com/takuseno/D4RL , which fixes some of incompatibilities.

[sky-story]

I think you're using Farama's D4RL package in your experiment. Please try this:

$ pip uninstall D4RL
$ d3rlpy install d4rl

In this way, d3rlpy will install my fork D4RL package from https://github.com/takuseno/D4RL , which fixes some of incompatibilities.

Thanks for the suggestion！I originally installed the D4RL package using the following commands:

pip install d3rlpy
pip install git+https://github.com/Farama-Foundation/D4RL
pip install -U gym
pip uninstall pybullet

However, it appears that this setup defaults to Farama's D4RL package.
I'll give your approach a try using d3rlpy install d4rl
By the way, it seems that the command d3rlpy install d4rl requires python 3.9？

[takuseno]

By the way, it seems that the command d3rlpy install d4rl requires python 3.9？

I don't think so. Did you see any errors?

[sky-story]

By the way, it seems that the command d3rlpy install d4rl requires python 3.9？

I don't think so. Did you see any errors?

@takuseno Sorry for the delayed response. Yes, I have some evidence that this issue exists. I am using Python 3.8, and when I run the command to install d4rl, I get the following error：

(drl_project) root@autodl-container-362e44a99f-d27d57c6:~# d3rlpy install d4rl
Traceback (most recent call last):
  File "/root/miniconda3/envs/drl_project/bin/d3rlpy", line 5, in <module>
    from d3rlpy.cli import cli
  File "/root/miniconda3/envs/drl_project/lib/python3.8/site-packages/d3rlpy/cli.py", line 352, in <module>
    name: list[str], upgrade: bool = False, check: bool = True
TypeError: 'type' object is not subscriptable

I suspect it is because type annotations like list[str] are only supported in Python 3.9 and above.

[takuseno]

Thanks for following up on this! Yeah, you're right. In the latest commit, I've updated these lines:
18d710a

If you install d3rlpy from source, it should work with Python 3.8.

[sky-story]

That's great！I'll close this issue.