Hey there @flipmcf, is the change which adds `script_helpers` to test.support is missing from your patch?

>>> import test.support.script_helper
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named 'test.support.script_helper'

I'm thinking also, maybe instead of putting script_helper into the test.support namespace, we could move the individual methods and helpers from script_helper into test.support, e.g.:

test.support.run_python_until_end
vs.
test.support.script_helper.run_python_until_end