python_lint.yml

name: python_lint

on:
  push:
    branches: "**"
  pull_request:
    types: [opened, reopened, synchronize, closed]
    branches: "**"

jobs:
  flake8_py3:
    runs-on: ubuntu-latest
    steps:
      - name: Setup Python
        uses: actions/setup-python@v1
        with:
          python-version: 3.9.x
          architecture: x64
      - name: Checkout PyTorch
        uses: actions/checkout@v2
        with:
          fetch-depth: 0
      - name: Install flake8
        run: pip install flake8
      - name: Check for Python file changes
        id: file_check
        uses: tj-actions/changed-files@v44
        with:
          sha: ${{ github.event.pull_request.head.sha }}
          files: |
             **.py
      - name: Run flake8
        if: steps.file_check.outputs.any_changed == 'true'
        run: flake8 --ignore E501,W503,E203,W605
      - name: No Python files changed
        if: steps.file_check.outputs.any_changed != 'true'
        run: echo "No Python files have been changed."

  black_lint:
    runs-on: ubuntu-latest
    steps:
        - name: Setup
          uses: actions/checkout@v2
          with:
            fetch-depth: 0
        - name: Install black in jupyter
          run: pip install black[jupyter]
        - name: Check for Python file changes
          id: file_check
          uses: tj-actions/changed-files@v44
          with:
            sha: ${{ github.event.pull_request.head.sha }}
            files: '**.py'
        - name: Check code lints with Black
          if: steps.file_check.outputs.any_changed == 'true'
          uses: psf/black@stable
        - name: No Python files changed
          if: steps.file_check.outputs.any_changed != 'true'
          run: echo "No Python files have been changed."