enforce code style in python module

[fzahle]

We should check and enforce code style in the python module. We often use Black, but I don't have strong feelings on that.

• add specific version of black (or other) to pyproject.toml as dependency
• run black on existing code and merge
• add syntax check to CI pipeline

[rafmudaf]

Also add something to check and standardize imports (find unused, arrange consistently, etc).

[fzahle]

@rafmudaf good point. we've been using isort for that, ok?

[rafmudaf]

Yes, I also like isort.

Another option for linting, in general, is ruff. We moved to this in floris a few years ago and I have not regretted it. It's easy to use and runs fast, but maybe more importantly it's extremely well supported and gets new feature regularly. They've aggregated many rules from various linters. In FLORIS, we moved most of the isort rules to ruff.

All that said, I think any combination of infrastructure to enforce code style will be beneficial, so I'm happy with whatever you like @fzahle.

[fzahle]

let's do this in a minor release following 2.0