language: python
python:
  - 2.7
  - 3.5
  - 3.6
  - 3.7
  - 3.8
  - nightly

matrix:
  allow_failures:
    - python: 3.5, nightly
install:
  - pip install six yapf
script:
  - python test/run_all.py
  - yapf --diff --recursive .