10 things I love about GitHub Actions (contexts and expressions)

gh-actions-contexts-and-expressions.yml

strategy:
  matrix:
    python-version: [3.6, 3.7, 3.8]

  steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v1
      with:
        python-version: ${{ matrix.python-version }}
    - runs: pip install -U -r requirements.txt
    - runs: flake8
      if: matrix.python-version == 3.8
    - runs: pytest