Adds a new row (list) to the table.

    Args:
      new_values: Tuple, dict, or Row() of new values to append as a row.

    Raises:
      TableError: Supplied tuple not equal to table width.

def Append(self, new_values):
        """Adds a new row (list) to the table.

    Args:
      new_values: Tuple, dict, or Row() of new values to append as a row.

    Raises:
      TableError: Supplied tuple not equal to table width.
    """
        newrow = self.NewRow()
        newrow.values = new_values
        self._table.append(newrow)