        - { python: "3.4", env: DJANGO=2.1 }
  
      allow_failures:
        - env: DJANGO=master
        - env: DJANGO=2.1
  
  install:
      - pip install tox tox-venv tox-travis
  
  script:
 
</s> remove        {py34,py35,py36}-django20,
       {py35,py36}-django21
       {py35,py36}-djangomaster,
 </s> add        {py34,py35,py36,py37}-django20,
       {py35,py36,py37}-django21
       {py35,py36,py37}-djangomaster,
        - { python: "3.4", env: DJANGO=2.1 }
  
      allow_failures:
        - env: DJANGO=master

  
  install:
      - pip install tox tox-venv tox-travis
  
  script:
keep keep keep keep replace keep keep keep keep keep
 Add Python 3.7 support (#6141) 
.travis.yml