code: def set_row(self, treeiter, row):
          
  
          converted_row, columns = self._convert_row(row)
          for column in columns:
              value = row[column]
              if value is None:
                  continue  # None means skip this row
  
              self.set_value(treeiter, column, value)
docs: :param treeiter: the :obj:`Gtk.TreeIter`
          :type treeiter: :obj:`Gtk.TreeIter`
  
          :param row: a list of values for each column
          :type row: [:obj:`object`]
  
          Sets all values of a row pointed to by `treeiter` from a list of
          values passes as `row`. The length of the row has to match the number
          of columns of the model. :obj:`None` in `row` means the value will be
          skipped and not set.
  
          Also see :obj:`Gtk.ListStore.set_value`\\() and
          :obj:`Gtk.TreeStore.set_value`\\()