fix: Fallback to None when attribute is missing #137

	name: build

	on:
	push:
	branches:
	- main
	- release**
	paths-ignore:
	- '**.md'
	- '**.rst'
	pull_request:
	paths-ignore:
	- '**.md'
	- '**.rst'
	workflow_dispatch:
	schedule:
	- cron: '0 6 * * 1' # Monday at 6:00 UTC

	# This will cancel previous run if a newer job that obsoletes the said previous
	# run, is started.
	# Based on https://github.com/zulip/zulip/commit/4a11642cee3c8aec976d305d51a86e60e5d70522
	concurrency:
	group: "${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}"
	cancel-in-progress: true

	jobs:
	build-stable:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	- name: Install dependencies
	run: pip install mesa pytest
	- name: Test with pytest
	run: pytest test_examples.py

	build-main:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	- name: Install dependencies
	run: \|
	pip install pytest
	pip install -U git+https://github.com/projectmesa/mesa@main#egg=mesa
	- name: Test with pytest
	run: pytest test_examples.py

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