':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`\()'

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
        self.set_value(treeiter, column, value)
