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

tonpy-dev
0.0.0.3.6rc1

This version was deleted from PyPI around 2024-03-14. Installing fails with:
$ pip3 install tonpy-dev==0.0.0.3.6rc1 ERROR: Could not find a version that satisfies the requirement tonpy-dev==0.0.0.3.6rc1
View other deleted versions of tonpy-dev

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/2024-03-13/ \ tonpy-dev==0.0.0.3.6rc1
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Or, download files manually

And install manually via pip:
tonpy_dev-0.0.0.3.6rc1-cp39-cp39-manylinux2014_x86_64.whl (10.5MB)