AttributeError with benchmark_spec in OpenAI Gym version 0.10.9

[OwenNebula55]

I’m facing a problem with OpenAI Gym version 0.10.9 where I’m receiving an AttributeError when trying to access the benchmark feature. Here’s the code I’m using:

import gym
atari_benchmark = gym.benchmark_spec('Atari40M')

However, I encounter this error:

AttributeError: 'module' object has no attribute 'benchmark_spec'

I’m not clear on why this happens. The code seems simple, but it appears that the gym module does not recognize the benchmark_spec attribute. Has anyone else faced this issue? I’m curious if it has to do with the version I’m running or if there’s something I’m overlooking. I would greatly appreciate any assistance!

[jess_brown]

that’s weird - gym.benchmark_spec shouldn’t throw that error. I’ve hit similar issues with different gym versions. try importing directly from gym.benchmarks instead. sometimes they change the module structure but leave the functionality buried in submodules. check if from gym.benchmarks import benchmark_spec works with your version.

[ZoeStar42]

I hit this same problem before. The benchmark_spec feature got deprecated and removed from OpenAI Gym around version 0.9.x - so even though you’re on 0.10.9, it’s gone. I had to manually create the Atari benchmark specs by setting up the environments with the right wrappers myself. You can dig up the original benchmark definitions in the old gym docs or check the GitHub history for the exact parameters. Or you could downgrade to something like 0.7.4 to get benchmark_spec back, but then you’ll miss out on newer features and bug fixes.

[sofiap]

Same thing happened to me when I upgraded gym last year. Yeah, they removed benchmark_spec, but there’s a solid workaround. Don’t bother with the deprecated benchmark specs - just use the registry system instead. You can still create the original Atari environments with gym.make() using the specific IDs from Atari40M. All the environment names like ‘BeamRider-v0’ and ‘Breakout-v0’ still work perfectly. Need the complete Atari40M environment list? Check the archived docs on GitHub - everything’s still there. Plus this way gives you way more control over your setup.

[Alice45]

yep, the benchmark_spec was taken out in recent gym updates. your options are to downgrade your gym version or check out other tools like gym-benchmark. hope that helps!