language: python
python: 
  - "2.6"
  - "2.7"
  - "3.3"
  - "3.4"
  - "3.5"
  - "3.6"
  - "3.7"
dist: xenial
sudo: true

# command to install dependencies
install:
    - pip check

# command to run tests
script:
    - pytest

notifications:
  email:
    on_success: change
    on_failure: change

language: python
python: 
  - "2.6"
  - "2.7"
  - "3.3"
  - "3.4"
  - "3.5"
  - "3.6"
  - "3.7"

# command to install dependencies
install:
    - pip check

# command to run tests
script:
    - pytest

notifications:
  email:
    on_success: change
    on_failure: change

Use default dist in Travis instead of xenial
Use default dist in Travis instead of xenial
