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

sinan-captcha
0.1.18

This version was deleted from PyPI around 2026-04-08. Installing fails with:
$ pip3 install sinan-captcha==0.1.18 ERROR: Could not find a version that satisfies the requirement sinan-captcha==0.1.18
View other deleted versions of sinan-captcha

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/2026-04-07/ \ sinan-captcha==0.1.18
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Or, download files manually

And install manually via pip:
sinan_captcha-0.1.18-py3-none-any.whl (140.5KB)
sinan_captcha-0.1.18.tar.gz (110.5KB)