(self)
| 38 | return key in self.data |
| 39 | |
| 40 | def __iter__(self): |
| 41 | if self.data is None: |
| 42 | _fill_lock.acquire() |
| 43 | try: |
| 44 | if self.data is None: |
| 45 | self._fill() |
| 46 | finally: |
| 47 | _fill_lock.release() |
| 48 | return iter(self.data) |
| 49 | |
| 50 | def __len__(self): |
| 51 | if self.data is None: |