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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def logging_on(level=logging.WARNING):
 """Turn logging on. """

    global _is_logging_on

    if not _is_logging_on:
        console = logging.StreamHandler()
        console.setFormatter(logging.Formatter("[%(levelname)s: %(asctime)s :"
                                               " %(name)s] %(message)s",
                                               '%Y-%m-%d %H:%M:%S'))
        console.setLevel(level)
        logging.getLogger('').addHandler(console)
        _is_logging_on = True

    log = logging.getLogger('')
    log.setLevel(level)
    for h in log.handlers:
        h.setLevel(level)