def METHOD_NAME(kelvintemp):
    """
    Converts a numeric temperature from Kelvin degrees to Celsius degrees
    :param kelvintemp: the Kelvin temperature
    :type kelvintemp: int/long/float
    :returns: the float Celsius temperature
    :raises: *TypeError* when bad argument types are provided
    """
    if kelvintemp < 0:
        raise ValueError(__name__ +
                         ": negative temperature values not allowed")
    celsiustemp = kelvintemp - KELVIN_OFFSET
    return float("{0:.2f}".format(celsiustemp))