Add support for Python 3.13. #257

	name: Python tests

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	pre_job:
	name: Path match check
	runs-on: ubuntu-latest
	# Map a step output to a job output
	outputs:
	should_skip: ${{ steps.skip_check.outputs.should_skip }}
	steps:
	- id: skip_check
	uses: fkirc/skip-duplicate-actions@master
	with:
	github_token: ${{ github.token }}
	paths: '["**.py", ".github/workflows/pythontest.yml", "requirements-test.txt", "tox.ini"]'
	unit_test:
	name: Python unit tests
	needs: pre_job
	if: ${{ needs.pre_job.outputs.should_skip != 'true' }}
	runs-on: ubuntu-20.04
	strategy:
	max-parallel: 5
	matrix:
	python-version: [3.6, 3.7, 3.8, 3.9, '3.10', '3.11', '3.12', '3.13']
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Cache pip
	uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-py${{ matrix.python-version }}-${{ hashFiles('setup.py') }}
	- name: Install tox
	run: \|
	python -m pip install --upgrade pip
	pip install tox
	- name: tox env cache
	if: ${{ !startsWith(runner.os, 'windows') }}
	uses: actions/cache@v4
	with:
	path: ${{ github.workspace }}/.tox/py${{ matrix.python-version }}
	key: ${{ runner.os }}-tox-py${{ matrix.python-version }}-${{ hashFiles('setup.py') }}
	- name: Test with tox
	run: tox -e py${{ matrix.python-version }}

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