(self, new_value)
| 22 | self._observers.remove(observer) |
| 23 | |
| 24 | def set(self, new_value): |
| 25 | if self.bound: |
| 26 | raise Exception('Failed to set value to bound property') |
| 27 | self._set_internal(new_value) |
| 28 | |
| 29 | def _set_internal(self, new_value): |
| 30 | old_value = self._value |