You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

a4f
1.0.3

This version was deleted from PyPI around 2025-09-26. Installing fails with:
$ pip3 install a4f==1.0.3 ERROR: Could not find a version that satisfies the requirement a4f==1.0.3
View other deleted versions of a4f

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/2025-09-25/ \ a4f==1.0.3
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:
a4f-1.0.3-py3-none-any.whl (142.0KB)
a4f-1.0.3.tar.gz (95.1KB)