The Python environment is now working. Note that the playbook:

1. Installs the Python and Pip in a Virtualenv in /vagrant/snowplow-python-tracker-environment
2. Installs the Snowplow-Python-Tracker in /vagrant/snowplow-python-tracker

You need to make sure that you run the tracker using /vagrant/snowplow-python-tracker-environment/bin/python3.3