code: def _move_dragged_row(self, item):
          
          self.move(self._dragged_row, '', self.index(item))
          self.see(self._dragged_row)
          bbox = self.bbox(self._dragged_row)
          self._dragged_row_y = bbox[1]
          self._dragged_row_height = bbox[3]
          self._visual_drag.see(self._dragged_row)
docs: Insert dragged row at item's position.