main.yml

# This is a basic workflow to help you get started with Actions

name: CI

# Controls when the workflow will run
on: [push]
  # Triggers the workflow on push or pull request events but only for the master branch
  # push:
    # branches: [ master ]
  # pull_request:
    # branches: [ master ]

  # Allows you to run this workflow manually from the Actions tab
  # workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  formatting:
    # The type of runner that the job will run on
    runs-on: ubuntu-18.04

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v2

      # Runs a single command using the runners shell
      - name: Set up python 3.7.9
        uses: actions/setup-python@v2
        with:
          python-version: 3.7.9
      - name: Run black code formatter
        run: |
          cd $GITHUB_WORKSPACE
          pip3 install --upgrade pip
          pip3 install black
          black --check .