name: Python lints and tests

on:
  push:
    paths:
      - '.github/workflows/python.yml'
      - '*.py'

jobs:
  test_py:
    runs-on: ubuntu-latest
    strategy:
      max-parallel: 4
      matrix:
        python-version: [2.7, 3.5, 3.6, 3.7]
    steps:
    - uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v1
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r requirements.txt
    - name: Lint and test with pylint, flake8, doctest, pytest
      run: |
        make test_py