code: def set_style(self, column, style):
          
  
          column_idx = None
  
          while len(self.headers) > len(self.__style_list):
              self.__style_list.append(None)
  
          if isinstance(column, six.integer_types):
              column_idx = column
          elif isinstance(column, six.string_types):
              try:
                  column_idx = self.headers.index(column)
              except ValueError:
                  pass
  
          if column_idx is not None:
              self.__style_list[column_idx] = style
              self.__clear_preprocess()
              self._dp_extractor.format_flags_list = [
                  _ts_to_flag[self.__get_thousand_separator(col_idx)]
                  for col_idx in range(len(self.__style_list))
              ]
              return
  
          raise ValueError("column must be an int or string: actual={}".format(column))
docs: Set |Style| for a specific column.
  
          Args:
              column (|int| or |str|):
                  Column specifier. column index or header name correlated with the column.
              style (|Style|):
                  Style value to be set to the column.
  
          Raises:
              ValueError: If the column specifier is invalid.