You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
devilcore was reported malicious
OSV:MAL-2025-916 - Malicious code in devilcore (PyPI)

devilcore
1

This version was deleted from PyPI around 2024-12-04. Installing fails with:
$ pip3 install devilcore==1 ERROR: Could not find a version that satisfies the requirement devilcore==1
View other deleted versions of devilcore

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/2024-12-02/ \ devilcore==1
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Or, download files manually

And install manually via pip:
DevilCore-1-py3-none-any.whl (99.5KB)
devilcore-1.tar.gz (99.6KB)