fix invariant check to not require stateful variables #7439

	name: lint

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	build:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	token: ${{github.token}}

	- name: set up python
	uses: actions/setup-python@v4
	with:
	python-version: "3.10"
	token: ${{github.token}}

	- name: install requirements
	run: \|
	python -m venv --upgrade-deps .venv
	source .venv/bin/activate
	pip install -e '.[all]'

	- name: run black
	run: \|
	source .venv/bin/activate
	python -m black --config pyproject.toml --check --diff .

	- name: get all Python files
	id: list_files
	run: \|
	echo "files=$(git ls-files '.py' '.pyi' \| xargs)" >> $GITHUB_OUTPUT

	- name: run Pylint on files
	run: \|
	source .venv/bin/activate
	files="${{ steps.list_files.outputs.files }}"
	if [ -n "$files" ]; then
	pylint --rcfile=.pylintrc $files
	else
	echo "No Python files found."
	fi

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