language: python
python:
  - "2.7"
  - "3.5"
  - "3.6"
  - "3.7"
  - "pypy"
  - "pypy3"
services:
  - mongodb
install:
  - pip install -r requirements.txt
  - pip install flake8
  - pip install coveralls
before_script: flake8
script: pytest
after_success: coveralls

language: python
python:
  - "2.7"
  - "3.5"
  - "3.6"
  - "3.7"
  - "pypy"
  - "pypy3"
matrix:
  allow_failures:
    - python: "pypy"
    - python: "pypy3"
services:
  - mongodb
install:
  - pip install -r requirements.txt
  - pip install flake8
  - pip install coveralls
before_script: flake8
script: pytest
after_success: coveralls

Make PyPy and PyPy3 CI optional
Make PyPy and PyPy3 CI optional
