Improve lists #305

	# Lints the code

	name: Run linter

	on:
	push:
	branches: [ main ]
	pull_request:
	branches-ignore: [ ]

	jobs:
	lint:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.9]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 poetry
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics \
	--exclude .git,build,dist
	# exit-zero treats all errors as warnings.
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=80 \
	--statistics --exclude .git,build,dist

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