[tox] envlist = flake8-py2, flake8-py3 skipsdist = True [testenv:flake8-py2] basepython = python2 deps= flake8 commands=flake8 --select=F,E9 --exclude=venv,.tox [testenv:flake8-py3] basepython = python3 deps= flake8 commands=flake8 --select=F,E9 --exclude=venv,.tox