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

dash-mdc-neptune
0.3.0

This version was deleted from PyPI around 2023-10-20. Installing fails with:
$ pip3 install dash-mdc-neptune==0.3.0 ERROR: Could not find a version that satisfies the requirement dash-mdc-neptune==0.3.0
View other deleted versions of dash-mdc-neptune

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/2023-10-19/ \ dash-mdc-neptune==0.3.0
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:
dash_mdc_neptune-0.3.0-py3-none-any.whl (596.8KB)
dash_mdc_neptune-0.3.0.tar.gz (583.7KB)