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

fiinquant
0.10.20

This version was deleted from PyPI around 2025-04-01. Installing fails with:
$ pip3 install fiinquant==0.10.20 ERROR: Could not find a version that satisfies the requirement fiinquant==0.10.20
View other deleted versions of fiinquant

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/2025-03-31/ \ fiinquant==0.10.20
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Or, download files manually

And install manually via pip:
FiinQuant-0.10.20-py3-none-any.whl (45.3KB)
fiinquant-0.10.20.tar.gz (41.8KB)