[python-tulip] Skipping 'test_tasks': No module named 'test.script_helper'

[Gustavo Carneiro]

I get this message when I try to run tulip unit tests with system Python
3.4.2:

Skipping 'test_tasks': No module named 'test.script_helper'

I am trying to add a new test case, but all the task tests are skipped.
Where can I find this test.script_helper module?

-- 
Gustavo J. A. M. Carneiro
Gambit Research
"The universe is always one step beyond logic." -- Frank Herbert