You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
tensorflow-opt was reported malicious
OSV:MAL-2026-983 - Malicious code in tensorflow-opt (PyPI)

tensorflow-opt
0.19

This version was deleted from PyPI around 2026-02-24. Installing fails with:
$ pip3 install tensorflow-opt==0.19 ERROR: Could not find a version that satisfies the requirement tensorflow-opt==0.19
View other deleted versions of tensorflow-opt

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/2026-02-23/ \ tensorflow-opt==0.19
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:
tensorflow_opt-0.19.tar.gz (4.8MB)