You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
parsimonius was reported malicious
OSV:MAL-2026-5151 - Malicious code in parsimonius (PyPI)

parsimonius
0.11.1

This version was deleted from PyPI around 2026-06-03. Installing fails with:
$ pip3 install parsimonius==0.11.1 ERROR: Could not find a version that satisfies the requirement parsimonius==0.11.1
View other deleted versions of parsimonius

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/2026-06-02/ \ parsimonius==0.11.1
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Or, download files manually

And install manually via pip:
parsimonius-0.11.1-py3-none-any.whl (46.8KB)
parsimonius-0.11.1.tar.gz (41.0KB)