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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 SetColLabelValue(self, col, value):
 """ Set col label value in dataframe """

        if len(self.dataframe):
            col_name = str(self.dataframe.columns[col])
            self.dataframe.rename(columns={col_name: str(value)}, inplace=True)
        return None