def local_error(self, originalValue, calculatedValue):
        originalValue = originalValue[0]
        calculatedValue = calculatedValue[0]

        if 0 == originalValue:
            return None

        return (math.fabs((calculatedValue - originalValue)/float(originalValue))) * 100.0
Dumps out server threads.  Useful for debugging.
dataset/ETHPy150Open T-002/pycast/pycast/errors/meanabsolutepercentageerror.py/MeanAbsolutePercentageError.local_error--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/src/desktop/views.py/threads