def stddevSeries(requestContext, *seriesLists):
    """

    Takes one metric or a wildcard seriesList.
    Draws the standard deviation of all metrics passed at each time.

    Example::

        &target=stddevSeries(company.server.*.threads.busy)

    """
    if not seriesLists or not any(seriesLists):
        return []
    seriesList, start, end, step = normalize(seriesLists)
    name = "stddevSeries(%s)" % formatPathExpressions(seriesList)
    values = (safeStdDev(row) for row in zip_longest(*seriesList))
    series = TimeSeries(name, start, end, step, values)
    series.pathExpression = name
    return [series]


    Takes one metric or a wildcard seriesList.
    Draws the standard deviation of all metrics passed at each time.

    Example::

        &target=stddevSeries(company.server.*.threads.busy)

    
graphite_api/functions.py