def sumSeries(requestContext, *seriesLists):
    if not seriesLists or not any(seriesLists):
        return []
    seriesList, start, end, step = normalize(seriesLists)
    name = "sumSeries(%s)" % formatPathExpressions(seriesList)
    values = (safeSum(row) for row in zip_longest(*seriesList))
    series = TimeSeries(name, start, end, step, values)
    series.pathExpression = name
    return [series]
Log 'msg % args' with severity 'WARNING'.
dataset/ETHPy150Open brutasse/graphite-api/graphite_api/functions.py/sumSeries--crossover with--dataset/ETHPy150Open babble/babble/include/jython/Lib/logging/__init__.py/Logger.warning