Tox as is a generic virtualenv management and test command line tool you can
use for:

* checking your package installs correctly with different
  Python versions and interpreters

* running your tests in each of the
  environments, configuring your test tool of choice

* acting as a frontend to Continuous Integration
  servers, greatly reducing boilerplate and merging
  CI and shell-based testing.

WWW: http://tox.testrun.org/
