Contributing

Setting up the development environment:

Install Python 3.8+
Install the requirements
```
$ python3 -m pip install -U pip
$ python3 -m pip install -Ur requirements.txt
```
You have to repeat this step whenever a commit adds new dependencies.
Install the pre-commit hook, that will do some code-format-checking.
```
$ pre-commit install
```
Note that this is not an auto-formatter. It will alter some code, but mostly it will just complain about non-compliant code.
You can disable a certain check for a single line of code if you think your code-style if preferable. E.g.
```
assume_this_line(violates_rule_e123, and_w321)  # noqa: E123,W321
```
Or use just # noqa to disable all checks for this line.
If you use # noqa on its own line, it will disable all checks for the whole file. Don't do that.
To disable certain rules for a whole file, check out setup.cfg.
If you want to run the checks manually, you can do so:
```
$ pre-commit run --all-files
# or
$ pre-commit run --file path/to/a/file
```