code: def description(self):
          
          if self.result_set:
              info = self.result_set.get_column_info()
              return [(c.name, c.type_code(), None, None, None, None, c.supports_null_values) for c in info]
          else:
              return None
docs: Retrieve a description of the columns in the current result set
  
          :return: A tuple of seven elements. Only some elements are meaningful:\n
                   *   Element #0 is the name of the column
                   *   Element #1 is the type code of the column
                   *   Element #6 is true if the column may contain ``NULL`` values