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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 requestRowRange(self, rangeBegin, rangeEnd):
 """ Retrieve display data for the given range of rows. @type rangeBegin: C{int} @param rangeBegin: The index of the first row to retrieve. @type rangeEnd: C{int} @param rangeEnd: The index of the last row to retrieve. @return: A C{list} of C{dict}s giving row data. """

        return self.constructRows(self.performQuery(rangeBegin, rangeEnd))