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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def removeBelowPercentile(requestContext, seriesList, n):
 """ Removes data below the nth percentile from the series or list of series provided. Values below this percentile are assigned a value of None. """

    for s in seriesList:
        s.name = 'removeBelowPercentile(%s, %g)' % (s.name, n)
        s.pathExpression = s.name
        try:
            percentile = nPercentile(requestContext, [s], n)[0][0]
        except IndexError:
            continue
        for (index, val) in enumerate(s):
            if val is None:
                continue
            if val < percentile:
                s[index] = None

    return seriesList