machine:
  post:
    - pyenv install 2.7.11
    - pyenv install 3.5.1
    - pyenv global 2.7.11 3.5.1
dependencies:
  override:
    - pip install -U pip
    - pip install -U setuptools

machine:
  post:
    - pyenv global 2.7.10 3.5.0
dependencies:
  override:
    - pip install -U pip setuptools tox

Fix issues virtualenv + CircleCI
Fix issues virtualenv + CircleCI
