fix type check linter warning (#514) #1710

	name: Unit Tests

	on: [push, pull_request]

	jobs:
	unit-tests:
	if: github.event_name != 'pull_request' \|\| github.event.pull_request.head.repo.fork == true
	strategy:
	matrix:
	python-version: ['3.7', '3.8', '3.10']
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Set up Node.js 14.x
	uses: actions/setup-node@v3
	with:
	node-version: 14.17.4
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install wheel
	pip install flake8 pytest
	pip install "jupyterlab>=3,<4"
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 ./src --count --select=E9,F63,F7,F82 --show-source --statistics
	flake8 ./test --max-complexity 10 --ignore E501,C901,W291 --show-source --statistics
	- name: Install
	run: \|
	python setup.py bdist_wheel
	pip install ./dist/graph_notebook-*-py3-none-any.whl
	- name: Post-install commands
	run: \|
	jupyter nbextension enable --py --sys-prefix graph_notebook.widgets
	python -m graph_notebook.static_resources.install
	python -m graph_notebook.nbextensions.install
	python -m graph_notebook.notebooks.install
	- name: Test with pytest
	run: \|
	pytest test/unit

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