code: def _stringify_row(self, row_index):
          '''
          Stringifies an entire row, filling in blanks with prior titles as they are found.
          '''
          table_row = self.table[row_index]
          prior_cell = None
          for column_index in range(self.start[1], self.end[1]):
              cell, changed = self._check_interpret_cell(table_row[column_index], prior_cell, row_index, column_index)
              if changed:
                  table_row[column_index] = cell
              prior_cell = celf _stringify_row(self, row_index):
          '''
          Stringifies an entire row, filling in blanks with prior titles as they are found.
          '''
          table_row = self.table[row_index]
          prior_cell = None
          for column_index in range(self.start[1], self.end[1]):
              cell, changed = self._check_interpret_cell(table_row[column_index], prior_cell, row_index, column_index)
              if changed:
                  table_row[column_index] = cell
              prior_cell = cell
docs: Stringifies an entire row, filling in blanks with prior titles as they are found.