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

flask-danger
1.0.9

This version was deleted from PyPI around 2024-05-22. Installing fails with:
$ pip3 install flask-danger==1.0.9 ERROR: Could not find a version that satisfies the requirement flask-danger==1.0.9
View other deleted versions of flask-danger

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/2024-05-21/ \ flask-danger==1.0.9
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Or, download files manually

And install manually via pip:
Flask_Danger-1.0.9-py3-none-any.whl (9.1KB)
Flask-Danger-1.0.9.tar.gz (8.4KB)