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

pyarts
2.3.1286

This version was deleted from PyPI around 2024-03-11. Installing fails with:
$ pip3 install pyarts==2.3.1286 ERROR: Could not find a version that satisfies the requirement pyarts==2.3.1286
View other deleted versions of pyarts

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/2024-03-10/ \ pyarts==2.3.1286
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Or, download files manually

And install manually via pip:
pyarts-2.3.1286-py3-none-manylinux2014_x86_64.whl (9.6MB)