add formating #1

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:

	concurrency:
	# Cancel concurrent flows on PRs
	group: ci-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	formatting:
	permissions:
	contents: read # for actions/checkout to fetch code
	pull-requests: write # for marocchino/sticky-pull-request-comment to create or update PR comment
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: mamba-org/setup-micromamba@v1
	with:
	environment-name: black
	create-args: black
	cache-environment: true

	- name: Check formatting
	shell: bash -el {0}
	run: black --check --diff .

	- name: Comment PR
	if: github.event_name == 'pull_request' && failure()
	uses: marocchino/[email protected]
	with:
	message: "Please format your code with [black](https://black.readthedocs.io): `black . `."
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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