code: def cget(self, key):
          
          if key is "canvaswidth":
              return self._canvaswidth
          elif key is "canvasheight":
              return self._canvasheight
          elif key is "function_new":
              return self._function_new
          elif key is "callback_add":
              return self._callback_add
          elif key is "callback_del":
              return self._callback_del
          elif key is "callback_move":
              return self._callback_move
          else:
              ttk.Frame.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:`~ItemsCanvas.keys`.