def response_for_status(cls, status):
    """
        Generate a status string for the status code

        :param int status: the status code to look-up
        :returns: string for the value or an appropriate Unknown value
        """
    if status in cls.status_values:
        return cls.status_values[status]
    elif status >= 100 and status < 200:
        return 'Unknown Informational Status'
    elif status >= 200 and status < 300:
        return 'Unknown Success Status'
    elif status >= 300 and status < 400:
        return 'Unknown Redirection Status'
    elif status >= 400 and status < 500:
        return 'Unknown Client Error'
    elif status >= 500 and status < 600:
        return 'Unknown Server Error'
    else:
        return 'Unknown Status'
