Hi! Awesome project!

We have very similar understanding of the python style. And I like it!
I wrote a linter to automate multiple checks that you mention here. It is based on flake8 and other existing plugins.

I will also enforce some of the rules listed here that I have missed.
Link: https://github.com/wemake-services/wemake-python-styleguide

Do you mind if I send a PR to mention my project? 🙂