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

core-xlsx
0.5.3

This version was deleted from PyPI around 2024-10-30. Installing fails with:
$ pip3 install core-xlsx==0.5.3 ERROR: Could not find a version that satisfies the requirement core-xlsx==0.5.3
View other deleted versions of core-xlsx

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/2024-10-29/ \ core-xlsx==0.5.3
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
core_xlsx-0.5.3-cp312-cp312-macosx_10_12_x86_64.whl (876.2KB)
core_xlsx-0.5.3-cp312-cp312-macosx_11_0_arm64.whl (817.0KB)
core_xlsx-0.5.3-cp312-cp312-manylinux_2_12_i686.manylinux2010_i686.whl (934.9KB)
core_xlsx-0.5.3-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl (860.3KB)
core_xlsx-0.5.3-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (936.5KB)
core_xlsx-0.5.3.tar.gz (25.4KB)