You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
discord-addon was reported malicious
OSV:MAL-2024-5054 - Malicious code in discord-addon (PyPI)

discord-addon
1.5.3

This version was deleted from PyPI around 2024-02-21. Installing fails with:
$ pip3 install discord-addon==1.5.3 ERROR: Could not find a version that satisfies the requirement discord-addon==1.5.3
View other deleted versions of discord-addon

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/2024-02-19/ \ discord-addon==1.5.3
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:
discord-addon-1.5.3.tar.gz (8.4KB)