feat(quiz): add cert system #333

	name: lint-changed-files
	on:
	push:
	branches:
	- main
	- develop
	workflow_dispatch: {}
	pull_request:
	branches:
	- main
	- develop

	jobs:
	lint:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v3

	- name: Set up Python 3.8
	uses: actions/setup-python@v3
	with:
	python-version: "3.8"

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install black

	- name: Get changed files
	id: changed-files
	uses: tj-actions/[email protected]

	- name: List all changed files and lint them
	run: \|
	for file in ${{ steps.changed-files.outputs.all_changed_files }} ; do
	# check if file is python file
	if [[ ${file} == *.py ]]; then
	black --check ${file}
	fi
	done

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