add py.typed file

[gruebel]

Great work on the package 💪

I saw you also added inline type hints, but didn't add the needed py.typed file to expose those type hints to type checkers. I also changed the setup call to use setuptools instead of distutils which will be removed in Python 3.12.

[gruebel]

hey @moomoohk any chance for a review here 🙂

[moomoohk]

Hi Anton,
Much appreciated and apologies for the delay.
I'm on it.

[moomoohk]

Can you please provide a short explanation of the changes you've made?
From what I've read online this is related to Mypy, which I'm not too familiar with.

Thanks

[gruebel]

yeah, sure.

This is related to the PEP 561 https://peps.python.org/pep-0561/

There are different ways of adding type hints to a Python code base, like stub files or inline type hints. The problem with inline type hints, I prefer inline type hints more than separate stub files, is that type checkers like mypy assume a package to be untyped, if it doesn't add a py.typed file in its package root.