Add pre commit CI #2

	name: Python test

	# On every pull request, but only on push to master
	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	tests:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.8, 3.9, "3.10", "3.11"]

	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 .

	# - name: Run tests
	# run: pytest

	- name: Cache pre-commit virtualenvs
	uses: actions/cache@v3
	if: matrix.python-version == 3.9
	with:
	path: ~/.cache/pre-commit
	key: pre-commit-3\|${{ hashFiles('.pre-commit-config.yaml') }}

	# TODO: switch this to run on e.g. 3.11 (how to get the if statement to
	# work?)
	# Run pre-commit (only for python-3.9)
	- name: run pre-commit
	if: matrix.python-version == 3.9
	run: \|
	python -m pip install pre-commit
	pre-commit run --all-files

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