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

base-class-package
0.1

This version was deleted from PyPI around 2024-10-10. Installing fails with:
$ pip3 install base-class-package==0.1 ERROR: Could not find a version that satisfies the requirement base-class-package==0.1
View other deleted versions of base-class-package

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/2024-10-09/ \ base-class-package==0.1
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Or, download files manually

And install manually via pip:
base_class_package-0.1-py3-none-any.whl (1.2KB)
base_class_package-0.1.tar.gz (1.1KB)