language: python
matrix:
  include:
    - python: 2.7
      dist: xenial
    - python: 3.2
      dist: trusty
    - python: 3.3
      dist: trusty
    - python: 3.4
      dist: xenial
    - python: 3.5
      dist: xenial
    - python: 3.6
      dist: xenial
    - python: 3.7
      dist: xenial
    - python: 3.8
      dist: focal
install: ""
script: test/run_tests

language: python
matrix:
  include:
    - python: "2.7"
      dist: xenial
    - python: "3.2"
      dist: trusty
    - python: "3.3"
      dist: trusty
    - python: "3.4"
      dist: xenial
    - python: "3.5"
      dist: xenial
    - python: "3.6"
      dist: xenial
    - python: "3.7"
      dist: xenial
    - python: "3.8"
      dist: focal
    - python: "3.9"
      dist: focal
    - python: "3.10"
      dist: focal
install: ""
script: test/run_tests

Test on Python 3.9 and 3.10
Test on Python 3.9 and 3.10
