You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

helios-rl
1.0.21

This version was deleted from PyPI around 2024-02-23. Installing fails with:
$ pip3 install helios-rl==1.0.21 ERROR: Could not find a version that satisfies the requirement helios-rl==1.0.21
View other deleted versions of helios-rl

Install through StableBuild

You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2024-02-21/ \ helios-rl==1.0.21
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
helios_rl-1.0.21-py3-none-any.whl (70.2KB)
helios-rl-1.0.21.tar.gz (52.7KB)