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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 get_all_longest_col_lengths(self):
 """ iterate over all columns and get their longest values :return: dict, {"column_name": 132} """

        response = {}
        for col in self.col_list:
            response[col] = self._longest_val_in_column(col)
        return response