| 1 | class Store: |
| 2 | def __init__(self): |
| 3 | self._data = {} |
| 4 | |
| 5 | def set(self, key, value): |
| 6 | self._data[key.lower()] = value |
| 7 | |
| 8 | def get(self, key, default=None): |
| 9 | return self._data.get(key, default) |
| 10 | |
| 11 | def delete(self, key): |
| 12 | self._data.pop(key.lower(), None) |
| 13 | |
| 14 | def __len__(self): |
| 15 | return len(self._data) |
| 16 |