[Question] OSError: [WinError 127], after 'import gym'

[whliu90]

Question

About my installation:
>> git clone https://github.com/openai/gym.git
then changed my directory and installed gym:
>> pip install -e .[all]
It seems everything was OK.

However, it gives me WinError 127, when trying to import gym.
>>> import gym

Traceback (most recent call last):
File "", line 1, in
File "c:\users\whliu\desktop\gym\gym_init_.py", line 12, in
from gym.envs import make, spec, register
File "c:\users\whliu\desktop\gym\gym\envs_init_.py", line 10, in
load_env_plugins()
File "c:\users\whliu\desktop\gym\gym\envs\registration.py", line 725, in load
env_plugins
fn = plugin.load()
File "C:\Users\whliu.conda\envs\rl\lib\site-packages\importlib_metadata_ini
t_.py", line 203, in load
module = import_module(match.group('module'))
File "C:\Users\whliu.conda\envs\rl\lib\importlib_init_.py", line 127, in i
mport_module
return _bootstrap.gcd_import(name[level:], package, level)
File "C:\Users\whliu.conda\envs\rl\lib\site-packages\ale_py_init.py", lin
e 26, in
os.add_dll_directory(packagedir)
File "C:\Users\whliu.conda\envs\rl\lib\os.py", line 1109, in add_dll_director
y
cookie = nt._add_dll_directory(path)
OSError: [WinError 127] 找不到指定的程序。: 'C:\Users\whliu\.conda\envs\rl
\lib\site-packages\ale_py'

• python 3.8.8
• mujoco 1.50.1
• win 10

[jkterry1]

@pseudo-rnd-thoughts would you mind taking a quick look at this?

[pseudo-rnd-thoughts]

Im not able to replicate your issue as mujoco is deprecated on windows for the latest branch
However, looking at the error then it appears to be ale-py

But I think that the issue if with using editable in installing it
#2648 (comment)
See this issue that explains the problem with editable for ale-py

Does pip install gym[atari] fix it?

[whliu90]

Im not able to replicate your issue as mujoco is deprecated on windows for the latest branch However, looking at the error then it appears to be ale-py

But I think that the issue if with using editable in installing it #2648 (comment) See this issue that explains the problem with editable for ale-py

Does pip install gym[atari] fix it?

Thanks for your advice. I just fix it by running pip uninstall ale-py, then everything is OK right now. I'm not sure if this would brings any bad influcence.

[pseudo-rnd-thoughts]

No worries, is this fixed? If so, could you close it

[whliu90]

Yes, it is fixed. Thanks again for your help.