(fn)
| 1410 | return __ior__ |
| 1411 | |
| 1412 | def difference_update(fn): |
| 1413 | def difference_update(self, value): |
| 1414 | for item in value: |
| 1415 | self.discard(item) |
| 1416 | |
| 1417 | _tidy(difference_update) |
| 1418 | return difference_update |
| 1419 | |
| 1420 | def __isub__(fn): |
| 1421 | def __isub__(self, value): |