Support optional avus for datacite #5092

	name: "Python 2 lint"

	on:
	push:
	paths-ignore:
	- 'tests/**'
	pull_request:
	paths-ignore:
	- 'tests/**'

	jobs:
	flake8:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [2.7]
	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	# setup-python stopped supporting Python 2.7, use https://github.com/MatteoH2O1999/setup-python
	uses: MatteoH2O1999/[email protected]
	with:
	python-version: ${{ matrix.python-version }}
	allow-build: info
	cache-build: true

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install flake8 flake8-import-order codespell

	- name: Lint with flake8
	run: \|
	flake8 --statistics

Provide feedback