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

pyspiro
0.1.0.post4

This version was deleted from PyPI around 2025-05-26. Installing fails with:
$ pip3 install pyspiro==0.1.0.post4 ERROR: Could not find a version that satisfies the requirement pyspiro==0.1.0.post4
View other deleted versions of pyspiro

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/2025-05-25/ \ pyspiro==0.1.0.post4
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:
PySpiro-0.1.0.post4-py3-none-any.whl (109.1KB)
pyspiro-0.1.0.post4.tar.gz (110.5KB)