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

tdf3sdk
1.0.4b879

This version was deleted from PyPI around 2025-05-20. Installing fails with:
$ pip3 install tdf3sdk==1.0.4b879 ERROR: Could not find a version that satisfies the requirement tdf3sdk==1.0.4b879
View other deleted versions of tdf3sdk

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/2025-05-19/ \ tdf3sdk==1.0.4b879
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:
tdf3sdk-1.0.4b879-cp36-cp36m-manylinux2010_x86_64.whl (7.8MB)
tdf3sdk-1.0.4b879-cp37-cp37m-linux_armv7l.whl (8.0MB)
tdf3sdk-1.0.4b879-cp37-cp37m-macosx_10_14_x86_64.whl (3.0MB)
tdf3sdk-1.0.4b879-cp37-cp37m-manylinux2010_x86_64.whl (7.8MB)
tdf3sdk-1.0.4b879-cp38-cp38-macosx_10_14_x86_64.whl (3.0MB)
tdf3sdk-1.0.4b879-cp38-cp38-manylinux2010_x86_64.whl (7.8MB)