Autoformat code using black

[hannahbast]

No description provided.

[Qup42]

ruff is an up-and-coming linter and quite hot at the moment. Its claim to fame is being extremely fast and unifying many tools in one. It supports the functionality of flake8, isort and black. Might be worth a look, while we are working on this topic.

[hannahbast]

@Qup42 Thanks a lot for the hint. I read a bit about ruff and I am in favor of using it. Our current format check does:

for PY in $(find src test -name "*.py"); do printf "$PY ... "; black --check $PY && flake8 $PY && python3 -m py_compile $PY && isort -c $PY && echo "OK"; done

How would you replace that?

[Qup42]

The command to check would then be ruff format --check && ruff check && python -m compileall src. I've also taken the liberty to add a commit with a ruff config file and a pre-commit hook config.

[Qup42]

No longer needed after #288