Auto-format Python code with ruff format

[cclauss]

Fixes: #14449

• Auto-format Python code #14449

Use ruff format to format Python code. https://docs.astral.sh/ruff/formatter

Settings in pyproject.toml are all subject to discussion:

format.quote-style = "preserve"
indent-width = 2
line-length = 120

• Add a ruff format command after the existing ruff check test in CircleCI.
• Remove .style.yapf because maintainers should agree on a single Python code formatter.
• Format suppression: comments can be used to preserve formatting. # fmt: off and # fmt: on

Any hints on the CircleCI: build-docs failure?

[sbc100]

All of these uses of parameterize are deliberately spread so that there is one test case per line. Its important for readability.

[cclauss]

See the format suppression comment in the commit message.

[cclauss]

Adding a trailing comma after the last dict item will cause ruff format to make things clear.

Suggested change

	parameterize(metafunc, {'': (None,), 'nodefs': ('nodefs',)})
	parameterize(
	metafunc,
	{
	'': (None,),
	'nodefs': ('nodefs',),
	},
	)