code: def get_right_key_rect(self):
          
  
          key_right = self.row, self.col + 1, self.tab
  
          border_width_right = \
              float(self.cell_attributes[self.key]["borderwidth_right"]) / 2.0
  
          rect_right = (self.x+self.width, self.y,
                        border_width_right, self.height)
          return key_right, rect_right
docs: Returns tuple key rect of right cell