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

finterstellar
0.2.291

This version was deleted from PyPI around 2023-09-27. Installing fails with:
$ pip3 install finterstellar==0.2.291 ERROR: Could not find a version that satisfies the requirement finterstellar==0.2.291
View other deleted versions of finterstellar

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/2023-09-26/ \ finterstellar==0.2.291
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Or, download files manually

And install manually via pip:
finterstellar-0.2.291-py3-none-any.whl (13.7KB)
finterstellar-0.2.291.tar.gz (12.7KB)