PR to verify disorders on input structure and improve error handling #44

	---
	name: Lint Python
	on: # yamllint disable-line rule:truthy
	pull_request:
	paths:
	- "*/.py"

	jobs:
	flake8:
	runs-on: ubuntu-latest
	outputs:
	changed-files: ${{ steps.file-changes.outputs.changed-files }}
	strategy:
	matrix:
	python_version: ["3.9"]

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Modified files
	id: file-changes
	run: \|
	echo \
	"changed-files=$(git diff --name-only -r origin/${GITHUB_BASE_REF} origin/${GITHUB_HEAD_REF} \
	\| grep '\.py' \
	\| tr '\n' ' ')" \
	>> $GITHUB_OUTPUT

	- name: Check GitHub event type to determine reporter type
	run: \|
	if [ "${{ github.event_name }}" == "pull_request" ]; then
	echo "REVIEWDOG_REPORTER=github-pr-review" >> $GITHUB_ENV
	else
	echo "REVIEWDOG_REPORTER=github-check" >> $GITHUB_ENV
	fi

	- name: Set up Python environment
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python_version }}

	- name: Lint Python
	uses: reviewdog/action-flake8@v3
	with:
	fail_on_error: false
	filter_mode: added
	level: error
	flake8_args: ${{ steps.file-changes.outputs.changed-files }}
	reporter: ${{ env.REVIEWDOG_REPORTER }}

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