code: def get_above_left_key_rect(self):
          
  
          key_above_left = self.row - 1, self.col - 1, self.tab
  
          border_width_right = \
              float(self.cell_attributes[key_above_left]["borderwidth_right"]) \
              / 2.0
          border_width_bottom = \
              float(self.cell_attributes[key_above_left]["borderwidth_bottom"]) \
              / 2.0
  
          rect_above_left = (self.x-border_width_right,
                             self.y-border_width_bottom,
                             border_width_right, border_width_bottom)
          return key_above_left, rect_above_left
docs: Returns tuple key rect of above left cell