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

jwztumor
1.0.13.post15

This version was deleted from PyPI around 2026-05-20. Installing fails with:
$ pip3 install jwztumor==1.0.13.post15 ERROR: Could not find a version that satisfies the requirement jwztumor==1.0.13.post15
View other deleted versions of jwztumor

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/2026-05-19/ \ jwztumor==1.0.13.post15
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:
jwztumor-1.0.13.post15-py3-none-any.whl (515.9KB)
jwztumor-1.0.13.post15.tar.gz (512.2KB)