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

q2rad
0.1.51

This version was deleted from PyPI around 2024-03-14. Installing fails with:
$ pip3 install q2rad==0.1.51 ERROR: Could not find a version that satisfies the requirement q2rad==0.1.51
View other deleted versions of q2rad

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/2024-03-13/ \ q2rad==0.1.51
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Or, download files manually

And install manually via pip:
q2rad-0.1.51-py3-none-any.whl (31.4KB)
q2rad-0.1.51.tar.gz (26.2KB)