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

py-astrolab
0.6.20

This version was deleted from PyPI around 2024-07-18. Installing fails with:
$ pip3 install py-astrolab==0.6.20 ERROR: Could not find a version that satisfies the requirement py-astrolab==0.6.20
View other deleted versions of py-astrolab

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/2024-07-17/ \ py-astrolab==0.6.20
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Or, download files manually

And install manually via pip:
py_astrolab-0.6.20-py3-none-any.whl (130.9KB)
py_astrolab-0.6.20.tar.gz (124.6KB)