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

ideastatica-rcs-client
23.1.3.878

This version was deleted from PyPI around 2024-01-15. Installing fails with:
$ pip3 install ideastatica-rcs-client==23.1.3.878 ERROR: Could not find a version that satisfies the requirement ideastatica-rcs-client==23.1.3.878
View other deleted versions of ideastatica-rcs-client

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/2024-01-14/ \ ideastatica-rcs-client==23.1.3.878
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Or, download files manually

And install manually via pip:
ideastatica_rcs_client-23.1.3.878-py3-none-any.whl (6.6KB)
ideastatica_rcs_client-23.1.3.878.tar.gz (5.4KB)