Exceptions: improve docstring and type hints #793

	name: Validate Waste Collection Schedule

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

	permissions:
	contents: read

	jobs:
	validate:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python 3.10
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install flake8 pytest
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Lint with flake8
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Test with pytest
	run: \|
	pytest
	- name: run update_docu_links
	run: \|
	python update_docu_links.py
	- name: check for changed files
	run: \|
	git diff --exit-code \|\| (echo "looks like the update_docu_links.py did not run" && false)

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