slackbuilds_ponce/python/tox

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.