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

t0
4.0.1rc0

This version was deleted from PyPI around 2024-05-15. Installing fails with:
$ pip3 install t0==4.0.1rc0 ERROR: Could not find a version that satisfies the requirement t0==4.0.1rc0
View other deleted versions of t0

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/2024-05-14/ \ t0==4.0.1rc0
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:
T0-4.0.1rc0-py3-none-any.whl (153.2KB)
t0-4.0.1rc0.tar.gz (212.2KB)