You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
research-learn was reported malicious
OSV:MAL-2025-6577 - Malicious code in research-learn (PyPI)

research-learn
0.3.1

This version was deleted from PyPI around 2024-06-29. Installing fails with:
$ pip3 install research-learn==0.3.1 ERROR: Could not find a version that satisfies the requirement research-learn==0.3.1
View other deleted versions of research-learn

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/2024-06-28/ \ research-learn==0.3.1
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Or, download files manually

And install manually via pip:
research_learn-0.3.1-py3-none-any.whl (26.6KB)
research-learn-0.3.1.tar.gz (31.5KB)