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

bcdb
0.4.0b1

This version was deleted from PyPI around 2023-10-29. Installing fails with:
$ pip3 install bcdb==0.4.0b1 ERROR: Could not find a version that satisfies the requirement bcdb==0.4.0b1
View other deleted versions of bcdb

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/2023-10-28/ \ bcdb==0.4.0b1
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Or, download files manually

And install manually via pip:
bcdb-0.4.0b1-py3-none-any.whl (22.0KB)
bcdb-0.4.0b1.tar.gz (23.4KB)