Adding in python 3.8 as well

    strategy:

      fail-fast: false

      matrix:

        python-version: [3.7]

    steps:

    - uses: actions/checkout@v2

    - name: Cache pip modules for Linux

        python-version: [3.7, 3.8]

        #    steps:

        #    - uses: actions/checkout@v2

        #    - name: Cache pip modules for Linux

      uses: actions/cache@v2

      with:

        path: ~/.cache/pip