code: def cget(self, key):
          
          if key == 'sortable':
              return self._sortable
          elif key == 'drag_cols':
              return self._drag_cols
          elif key == 'drag_rows':
              return self._drag_rows
          else:
              return ttk.Treeview.cget(self, key)
docs: Query widget option.
  
          :param key: option name
          :type key: str
          :return: value of the option
  
          To get the list of options for this widget, call the method :meth:`~Table.keys`.