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

owlplanner
2025.4.26

This version was deleted from PyPI around 2025-05-16. Installing fails with:
$ pip3 install owlplanner==2025.4.26 ERROR: Could not find a version that satisfies the requirement owlplanner==2025.4.26
View other deleted versions of owlplanner

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/2025-05-15/ \ owlplanner==2025.4.26
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:
owlplanner-2025.4.26-py3-none-any.whl (74.6KB)
owlplanner-2025.4.26.tar.gz (29.0MB)