try older syntax for type hint #45

	name: test
	# refer to https://docs.github.com/en/actions/guides/building-and-testing-python
	on: [push]

	jobs:
	test:
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.8", "3.11"]

	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	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 and build python module
	run: \|
	python -m pip install --upgrade pip wheel setuptools
	pip install --verbose .[dev,networkx]

	- name: Lint with flake8
	run: \|
	pip install flake8
	# stop the build if there are Python syntax errors or undefined names
	flake8 src --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 src --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

	- name: Test with pytest
	run: \|
	pytest --cov=snkit --cov-report=term-missing tests

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