(self)
| 3647 | _Screen._title = titlestring |
| 3648 | |
| 3649 | def _destroy(self): |
| 3650 | root = self._root |
| 3651 | if root is _Screen._root: |
| 3652 | Turtle._pen = None |
| 3653 | Turtle._screen = None |
| 3654 | _Screen._root = None |
| 3655 | _Screen._canvas = None |
| 3656 | TurtleScreen._RUNNING = False |
| 3657 | root.destroy() |
| 3658 | |
| 3659 | def bye(self): |
| 3660 | """Shut the turtlegraphics window. |