language: python
python:
  - "3.6"
install: pip install tox
script:
  - tox -e $(echo py$TRAVIS_PYTHON_VERSION | tr -d .)

language: python
python:
  - "3.6"
  - "3.7"
install: pip install tox
script:
  - tox -e $(echo py$TRAVIS_PYTHON_VERSION | tr -d .)

Add Python 3.7 to Travis tests
Add Python 3.7 to Travis tests
