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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_columns_as_string(self):
 """Returns columns as SOFT formated string."""

        columnslist = []
        for rowidx, row in self.columns.iterrows():
            columnslist.append("#%s = %s" % (rowidx, row.description))
        return "\n".join(columnslist)