You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
bunzbar was reported malicious
OSV:MAL-2025-6472 - Malicious code in bunzbar (PyPI)

bunzbar
0.20

This version was deleted from PyPI around 2025-02-09. Installing fails with:
$ pip3 install bunzbar==0.20 ERROR: Could not find a version that satisfies the requirement bunzbar==0.20
View other deleted versions of bunzbar

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/2025-02-08/ \ bunzbar==0.20
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Or, download files manually

And install manually via pip:
bunzbar-0.20-py3-none-any.whl (15.6KB)
bunzbar-0.20.tar.gz (15.2KB)