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

blctools
0.0.19

This version was deleted from PyPI around 2024-09-02. Installing fails with:
$ pip3 install blctools==0.0.19 ERROR: Could not find a version that satisfies the requirement blctools==0.0.19
View other deleted versions of blctools

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/2024-09-01/ \ blctools==0.0.19
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Or, download files manually

And install manually via pip:
blctools-0.0.19-py3-none-any.whl (64.3KB)
blctools-0.0.19.tar.gz (63.4KB)