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

otree
6.0.0a4

This version was deleted from PyPI around 2023-09-27. Installing fails with:
$ pip3 install otree==6.0.0a4 ERROR: Could not find a version that satisfies the requirement otree==6.0.0a4
View other deleted versions of otree

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/2023-09-26/ \ otree==6.0.0a4
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:
otree-6.0.0a4.tar.gz (441.9KB)