starlette-validation-uploadfile
This package was deleted from PyPI around 2023-10-20. Installing fails with:
$ pip3 install starlette-validation-uploadfile
ERROR: Could not find a version that satisfies the requirement starlette-validation-uploadfile (from versions: none)
ERROR: No matching distribution found for starlette-validation-uploadfile

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/2023-10-19/ \
starlette-validation-uploadfile
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)