You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
pyefflorer was reported malicious
OSV:MAL-2023-8570 - Malicious code in pyefflorer (PyPI)

pyefflorer
1.0.1

This version was deleted from PyPI around 2023-10-10. Installing fails with:
$ pip3 install pyefflorer==1.0.1 ERROR: Could not find a version that satisfies the requirement pyefflorer==1.0.1
View other deleted versions of pyefflorer

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/2023-10-09/ \ pyefflorer==1.0.1
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Or, download files manually

And install manually via pip:
pyefflorer-1.0.1.tar.gz (4.4KB)