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

dsms-sdk
1.4.0rc21

This version was deleted from PyPI around 2024-08-20. Installing fails with:
$ pip3 install dsms-sdk==1.4.0rc21 ERROR: Could not find a version that satisfies the requirement dsms-sdk==1.4.0rc21
View other deleted versions of dsms-sdk

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/2024-08-19/ \ dsms-sdk==1.4.0rc21
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:
dsms_sdk-1.4.0rc21-py3-none-any.whl (55.1KB)
dsms_sdk-1.4.0rc21.tar.gz (39.2KB)