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

mortal-func
2.3.21

This version was deleted from PyPI around 2024-10-17. Installing fails with:
$ pip3 install mortal-func==2.3.21 ERROR: Could not find a version that satisfies the requirement mortal-func==2.3.21
View other deleted versions of mortal-func

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/2024-10-16/ \ mortal-func==2.3.21
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Or, download files manually

And install manually via pip:
mortal_func-2.3.21-py3-none-any.whl (1.3MB)