(self, new_value)
| 27 | self._set_internal(new_value) |
| 28 | |
| 29 | def _set_internal(self, new_value): |
| 30 | old_value = self._value |
| 31 | |
| 32 | if old_value == new_value: |
| 33 | return |
| 34 | |
| 35 | self._value = new_value |
| 36 | |
| 37 | for observer in self._observers: |
| 38 | observer(old_value, new_value) |
| 39 | |
| 40 | def get(self): |
| 41 | return self._value |