setup.py test_suite for a twisted project

def collector():
    """                                                                                                                                                                                                          
    Test collector and runner for setup.py test                                                                                                                                                                  
    """
    from twisted.scripts.trial import run
    original_args = list(sys.argv)
    sys.argv = ["", "txzookeeper"]
    try:
        return run()
    finally:
        sys.argv = original_args