Add forward reference annotations and update CI Python version #28

	name: Python Tests

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	test:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v3
	with:
	submodules: true

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.9'

	- name: Install dependencies
	run: \|
	python -m venv .venv
	source .venv/bin/activate
	pip install --upgrade pip
	pip install poetry
	poetry install

	- name: Set PYTHONPATH
	run: echo "PYTHONPATH=$PYTHONPATH:$(pwd)" >> $GITHUB_ENV

	- name: Run tests
	run: \|
	source .venv/bin/activate
	poetry run pytest

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