code: def pprint_cell(self, row, col):
          
          if col > 2:
              raise Exception("Only two columns available in a ItemTable.")
          elif row >= self.rows:
              raise Exception("Maximum row index is %d" % self.rows-1)
          elif col == 0:
              return self.dimensions('value')[row].pprint_label
          else:
              dim = self.get_dimension(row)
              heading = self.vdims[row]
              return dim.pprint_value(self.data.get(heading.name, np.NaN))
docs: Get the formatted cell value for the given row and column indices.