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

flask-captcha2
3.0.1

This version was deleted from PyPI around 2023-10-27. Installing fails with:
$ pip3 install flask-captcha2==3.0.1 ERROR: Could not find a version that satisfies the requirement flask-captcha2==3.0.1
View other deleted versions of flask-captcha2

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/2023-10-26/ \ flask-captcha2==3.0.1
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Or, download files manually

And install manually via pip:
Flask-captcha2-3.0.1.tar.gz (6.4KB)