def compile_tree():
    stat = os.system('python -m compileall .')
    if stat:
        msg = '*** ERROR: Some Python files in tree do NOT compile! ***\n'
        msg += 'See messages above for the actual file that produced it.\n'
        raise SystemExit(msg)
Make sure event with notes are correctly stored
dataset/ETHPy150Open ipython/ipython-py3k/tools/toollib.py/compile_tree--crossover with--dataset/ETHPy150Open swcarpentry/amy/workshops/test/test_event.py/TestEventNotes.test_event_with_notes