Use Optional instead of pipe #6

	# This workflow will install Python dependencies, run tests and lint with a variety of Python versions
	# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python

	name: Test & Lint

	on:
	pull_request:
	branches: [ "main" ]
	push:
	branches: [ "main" ]

	# Limit concurrent runs of this workflow
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	# Minimal permissions for security
	permissions:
	contents: read

	jobs:
	test-and-lint:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "pypy-3.9"]

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip' # Enable pip caching

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install pytest pytest-cov ruff
	python -m pip install -e .

	# Run Ruff first - fail fast if there are syntax/style issues
	- name: Lint with Ruff
	run: \|
	# Run linting and formatting checks
	ruff check .
	ruff format --check .

	- name: Test with pytest and coverage
	run: \|
	pytest tests --cov=./ --cov-report=term-missing

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