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

5sim-python
1.0.4

This version was deleted from PyPI around 2025-05-19. Installing fails with:
$ pip3 install 5sim-python==1.0.4 ERROR: Could not find a version that satisfies the requirement 5sim-python==1.0.4
View other deleted versions of 5sim-python

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/2025-05-18/ \ 5sim-python==1.0.4
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:
5sim_python-1.0.4-py3-none-any.whl (4.5KB)
5sim-python-1.0.4.tar.gz (4.0KB)