You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
python-aliyun-sdk-kms was reported malicious
OSV:MAL-2023-8366 - Malicious code in python-aliyun-sdk-kms (PyPI)

python-aliyun-sdk-kms
2.16.1

This version was deleted from PyPI around 2023-09-29. Installing fails with:
$ pip3 install python-aliyun-sdk-kms==2.16.1 ERROR: Could not find a version that satisfies the requirement python-aliyun-sdk-kms==2.16.1
View other deleted versions of python-aliyun-sdk-kms

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/2023-09-28/ \ python-aliyun-sdk-kms==2.16.1
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Or, download files manually

And install manually via pip:
python-aliyun-sdk-kms-2.16.1.tar.gz (10.6KB)