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

kontor
0.0.31

This version was deleted from PyPI around 2023-10-04. Installing fails with:
$ pip3 install kontor==0.0.31 ERROR: Could not find a version that satisfies the requirement kontor==0.0.31
View other deleted versions of kontor

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/2023-10-03/ \ kontor==0.0.31
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:
kontor-0.0.31-py2.py3-none-any.whl (14.7KB)
kontor-0.0.31.tar.gz (15.5KB)