def _setup_log():
    """Configure root logger.
    """
    try:
        handler = logging.StreamHandler(stream=sys.stdout)
    except TypeError:  # pragma: no cover
        handler = logging.StreamHandler(strm=sys.stdout)

    log = get_log()
    log.addHandler(handler)
    log.setLevel(logging.INFO)
    log.propagate = False
Configure root logger.