I do not really understand how this is self contained, when you have to install additional software to run it.
my approach is to use python build-in venv https://gist.github.com/Szpadel/43794d606d9924e7fea3e63fb800...
that way you can run scripts with external packages with only basic python installation
Your version needs Python. uv needs needs only uv, as it can manage python installation by itself.
It's also a lot easier to install uv than to manage Python installations (there's a reason pyenv and the like exist).
That's fair point. Its maybe different use case. For me main goal was to be able to run project scripts on macos and Linux ootb, and both have some python 3 version already available ootb.
But probably if you need specific python version it isn't best way