It is just a way to wrap your python code into a self bootstrapping executable: https://ofek.dev/pyapp/latest/runtime/
You can get it setup pretty easily with hatch: https://hatch.pypa.io/1.9/plugins/builder/app/
But yea I agree the problem with python is there isn’t a tool like deno that just does everything that has to do with packaging, locking, venvs, and building a cross platform binary.