.travis.yml

language: python
dist: xenial
matrix:
  include:
    - python: "3.7.2"
      env: TOX_POSARGS="-e py37"
    - python: "3.8"
      env: TOX_POSARGS="-e py38"
    - python: "3.9"
      env: TOX_POSARGS="-e py39"
install:
  - travis_retry pip install tox
script:
  - travis_wait tox $TOX_POSARGS