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

assertj-core

This package was deleted from PyPI around 2025-07-15. Installing fails with:
$ pip3 install assertj-core ERROR: Could not find a version that satisfies the requirement assertj-core (from versions: none) ERROR: No matching distribution found for assertj-core

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/2025-07-14/ \ assertj-core
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

Choose a version to see all deleted wheels and files. We only show versions that have been deleted on PyPI.
3.25.3