use mixin class for QuantumESPRESSO #499

	name: Static Analysis
	on: [push, pull_request, workflow_dispatch]
	permissions: read-all

	jobs:
	python-linting:
	runs-on: ubuntu-22.04
	steps:
	- name: Check out repository
	uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
	with:
	persist-credentials: false

	- name: Set up Python
	uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
	with:
	python-version: '3.10'

	- name: Install Python packages
	run: \|
	pip install --upgrade pip
	pip install --upgrade flake8

	- name: Run flake8 to verify PEP8-compliance of Python code
	run: flake8

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