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

capsphere
0.3.11.dev0

This version was deleted from PyPI around 2024-02-17. Installing fails with:
$ pip3 install capsphere==0.3.11.dev0 ERROR: Could not find a version that satisfies the requirement capsphere==0.3.11.dev0
View other deleted versions of capsphere

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/2024-02-16/ \ capsphere==0.3.11.dev0
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:
capsphere-0.3.11.dev0-py3-none-any.whl (197.2KB)
capsphere-0.3.11.dev0.tar.gz (187.6KB)