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

opensees
0.0.46

This version was deleted from PyPI around 2025-08-12. Installing fails with:
$ pip3 install opensees==0.0.46 ERROR: Could not find a version that satisfies the requirement opensees==0.0.46
View other deleted versions of opensees

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/2025-08-11/ \ opensees==0.0.46
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Or, download files manually

And install manually via pip:
opensees-0.0.46-cp37-cp37m-manylinux_2_28_x86_64.whl (21.6MB)
opensees-0.0.46-cp38-cp38-manylinux_2_28_x86_64.whl (21.6MB)
opensees-0.0.46-cp39-cp39-manylinux_2_28_x86_64.whl (21.6MB)
opensees-0.0.46-cp310-cp310-manylinux_2_28_x86_64.whl (21.6MB)
opensees-0.0.46-cp311-cp311-manylinux_2_28_x86_64.whl (21.6MB)