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

op-code
0.0.1

This version was deleted from PyPI around 2023-11-20. Installing fails with:
$ pip3 install op-code==0.0.1 ERROR: Could not find a version that satisfies the requirement op-code==0.0.1
View other deleted versions of op-code

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/2023-11-19/ \ op-code==0.0.1
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Or, download files manually

And install manually via pip:
op_code-0.0.1-py3-none-any.whl (7.2KB)
op_code-0.0.1-py3.8.egg (13.5KB)
op-code-0.0.1.tar.gz (5.1KB)