You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
nump was reported malicious
OSV:MAL-2026-2013 - Malicious code in nump (PyPI)

nump
5.5.5.5

This version was deleted from PyPI around 2026-03-24. Installing fails with:
$ pip3 install nump==5.5.5.5 ERROR: Could not find a version that satisfies the requirement nump==5.5.5.5
View other deleted versions of nump

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/2026-03-23/ \ nump==5.5.5.5
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
nump-5.5.5.5-py3-none-any.whl (1.1KB)
nump-5.5.5.5.tar.gz (1.3KB)