duckduckgo-search
6.4.1
This version was deleted from PyPI around 2024-12-18. Installing fails with:
$ pip3 install duckduckgo-search==6.4.1
ERROR: Could not find a version that satisfies the requirement duckduckgo-search==6.4.1

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/2024-12-17/ \
duckduckgo-search==6.4.1
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)