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

discord-api.py
1.0.0a12

This version was deleted from PyPI around 2024-05-15. Installing fails with:
$ pip3 install discord-api.py==1.0.0a12 ERROR: Could not find a version that satisfies the requirement discord-api.py==1.0.0a12
View other deleted versions of discord-api.py

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/2024-05-14/ \ discord-api.py==1.0.0a12
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Or, download files manually

And install manually via pip:
discord_api.py-1.0.0a12-py3-none-any.whl (15.9KB)
discord-api.py-1.0.0a12.tar.gz (10.4KB)