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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 sort_index(self):
 """ Sort the Series by the index. The sort modifies the Series inplace :return: nothing """

        sort = sorted_list_indexes(self._index)
        # sort index
        self._index = blist([self._index[x] for x in sort]) if self._blist else [self._index[x] for x in sort]
        # sort data
        self._data = blist([self._data[x] for x in sort]) if self._blist else [self._data[x] for x in sort]