<NME> tox.ini
<BEF> [tox]
envlist = py26,py27,py33,pep8

[testenv]
deps=pytest
skip_install = true
deps =
  poetry
commands =
  poetry install -v
  poetry run pytest

<MSG> Use python 3.4

<DFF> @@ -1,5 +1,5 @@
 [tox]
-envlist = py26,py27,py33,pep8
+envlist = py26,py27,py33,py34,pep8
 
 [testenv]
 deps=pytest

Use python 3.4