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

tests42
2019.6.1

This version was deleted from PyPI around 2023-10-10. Installing fails with:
$ pip3 install tests42==2019.6.1 ERROR: Could not find a version that satisfies the requirement tests42==2019.6.1
View other deleted versions of tests42

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/2023-10-09/ \ tests42==2019.6.1
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Or, download files manually

And install manually via pip:
tests42-2019.6.1.tar.gz (1.6KB)