.travis.yml

language: python            # this works for Linux but is an error on macOS or Windows
python:
  #- "3.5"
  - "3.6"      # current default Python on Travis CI
 # - "3.7"
  #- "3.8"
  #- "3.8-dev"  # 3.8 development branch
  #- "nightly"  # nightly build

# jobs:
#   include:
#     - name: "Python 3.8.0 on Xenial Linux"
#       python: 3.8           # this works for Linux but is ignored on macOS or Windows
#     - name: "Python 3.7.4 on macOS"
#       os: osx
#       osx_image: xcode11.2  # Python 3.7.4 running on macOS 10.14.4
#       language: shell       # 'language: python' is an error on Travis CI macOS
#     - name: "Python 3.8.0 on Windows"
#       os: windows           # Windows 10.0.17134 N/A Build 17134
#       language: shell       # 'language: python' is an error on Travis CI Windows
#       before_install:
#         - choco install python --version 3.8.0
#         - python -m pip install --upgrade pip
#       env: PATH=/c/Python38:/c/Python38/Scripts:$PATH
before_install: 
  - pip3 install --upgrade pip  # all three OSes agree about 'pip3'
  - pip3 install -r requirements.txt
  - pip3 install -U pytest
  - pip3 install coverage
  - pip3 install codecov pytest-cov


install:
    - pip3 install  .
script:
  - coverage run -m pytest tests


after_success:
  #- codecov --file coverage/lcov.info --disable search
  - bash <(curl -s https://codecov.io/bash)