machine:
  python:
    version: 3.5.0

test:
  override:
    - ./runtests.sh

machine:
  python:
    version: 3.4.3

test:
  override:
    - ./runtests.sh

Change python version due to a py.test bug
Change python version due to a py.test bug

ref. https://github.com/pytest-dev/pytest/pull/801
