language: python
matrix:
  include:
    - name: "Check helpers on Python 2.7"
      python: 2.7
      script: ./scripts/check-helpers.sh
    - name: "Python style check on Python 2.7"
      python: 2.7
      script: ./scripts/py-style-check.sh
    - name: "flake8 lint on Python 2.7"      
      python: 2.7
      script: flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
    - name: "flake8 lint on Python 3.7"
      dist: xenial  # required for Python >= 3.7
      python: 3.7
      script: flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
  allow_failures:
    - name: "Check helpers on Python 2.7"
before_install: pip install --upgrade pip
install: pip install flake8