How to auto fix lint errors in a Pull Request (isort & black)

If you want to fix lint errors running on CI you can easily commit all changes that the linter has made.

In this example, I will be using black and isort to lint a python repo and sort the imports in the correct order also removing any unused imports.

name: Lint

on:
  pull_request:
    branches: ['*']

jobs:
  run-linters:
    name: Run linters
    runs-on: ubuntu-latest

    steps:
      - name: Check out Git repository
        uses: actions/checkout@v2

      - name: Set up Python
        uses: actions/setup-python@v1
        with:
          python-version: 3.8

      - name: Install Python dependencies and run linters
        # Here you can use your own linter commands
        run: |
          pip install black isort
          black .
          isort --profile black --sg="app/alembic/**"  .

      - name: Run linters
        uses: stefanzweifel/git-auto-commit-action@v4
        with:
          commit_message: 'Applied automatic fixes from linters'
          github_token: ${{ secrets.GITHUB_TOKEN }}