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

h2lib-tests
13.1.3

This version was deleted from PyPI around 2024-05-30. Installing fails with:
$ pip3 install h2lib-tests==13.1.3 ERROR: Could not find a version that satisfies the requirement h2lib-tests==13.1.3
View other deleted versions of h2lib-tests

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/2024-05-29/ \ h2lib-tests==13.1.3
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:
h2lib_tests-13.1.3-py3-none-any.whl (10.1MB)