qcs-sdk-python
0.5.0rc20
This version was deleted from PyPI around 2024-02-07. Installing fails with:
$ pip3 install qcs-sdk-python==0.5.0rc20
ERROR: Could not find a version that satisfies the requirement qcs-sdk-python==0.5.0rc20

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/2024-02-06/ \
qcs-sdk-python==0.5.0rc20
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:
qcs_sdk_python-0.5.0rc20-cp38-cp38-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl
(10.9MB)
qcs_sdk_python-0.5.0rc20-cp39-cp39-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl
(10.9MB)
qcs_sdk_python-0.5.0rc20-cp310-cp310-macosx_10_9_x86_64.macosx_11_0_arm64.macosx_10_9_universal2.whl
(10.9MB)