check_code_format.yml

---
name: check_code_format

'on':
  workflow_dispatch:
  push:
    branches:
      - main
  pull_request:

jobs:
  check_format_code:
    name: check format code
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Install fprettify
        run: pip install fprettify

      - name: Display fprettify version
        run: fprettify --version

      - name: Format code
        run: |
          git clean -f -x -d
          fprettify --indent 4 --recursive .

      - name: Fail if needs reformatting
        run: |
          if [[ $(git status --porcelain) ]]; then
             echo "please reformat/fprettify these files:"
             git status --porcelain=v1
             exit 1
          fi

      - name: Exact diff of needed reformatting
        if: failure()
        run: git diff
...