Resolve remaining issues spotted by flake8 #27

	name: Python package

	on:
	push:
	pull_request:
	workflow_dispatch:

	jobs:
	build:
	runs-on: ${{ matrix.os }}
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-20.04, ubuntu-24.04]
	python-version: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14-dev']
	exclude:
	- os: ubuntu-24.04
	python-version: 3.6
	- os: ubuntu-24.04
	python-version: 3.7
	- os: ubuntu-20.04
	python-version: 3.8
	- os: ubuntu-20.04
	python-version: 3.10
	- os: ubuntu-20.04
	python-version: 3.11
	- os: ubuntu-20.04
	python-version: 3.12
	- os: ubuntu-20.04
	python-version: 3.13
	- os: ubuntu-20.04
	python-version: 3.14-dev
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- 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
	# For now, ignore F401 ('.aggregate6.aggregate' imported but unused)
	# as, when removing the import, it at least breaks pytest, accept the
	# max. complexity of 18 for main() - and just fail otherwise
	flake8 . --count --ignore=F401 --max-complexity=18 --statistics
	- name: Set $PYTHONPATH
	run: echo "PYTHONPATH=$RUNNER_WORKSPACE/aggregate6" >> $GITHUB_ENV
	- name: Test with pytest
	run: pytest

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