Fix type hint on py38 #4

	name: lint

	on: [push]

	jobs:
	black:
	name: Check code formatting with black
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Extract black version from requirements-dev.txt
	id: black_version
	run: echo "::set-output name=version::$(grep -oP 'black==\K[^"]+' requirements-dev.txt)"
	- uses: psf/black@stable
	with:
	src: ./src
	version: ${{ steps.back_version.outputs.version }}
	ruff:
	name: Check code formatting with ruff
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Extract ruff version from requirements-dev.txt
	id: ruff_version
	run: echo "::set-output name=version::$(grep -oP 'ruff==\K[^"]+' requirements-dev.txt)"
	- uses: chartboost/ruff-action@v1
	with:
	version: ${{ steps.ruff_version.outputs.version }}
	mypy:
	name: Check type hints with mypy
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- run: \|
	pip install -r requirements-dev.txt
	mypy src/

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