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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 get_log_stream(logger):
 """ Returns a stream to the root log file. If there is no logfile return the stderr log stream Returns: A stream to the root log file or stderr stream. """


    file_stream = None
    log_stream = None
    for handler in logger.handlers:
        if isinstance(handler, logging.FileHandler):
            file_stream = handler.stream
        else:
            log_stream = handler.stream

    if file_stream:
        return file_stream

    return log_stream