(self)
| 2383 | return Lengths(child) |
| 2384 | |
| 2385 | def _layer(self): |
| 2386 | name = f"part-{self._name}" |
| 2387 | dsk = { |
| 2388 | (name, i): (len, (self.frame._name, i)) |
| 2389 | for i in range(self.frame.npartitions) |
| 2390 | } |
| 2391 | dsk[(self._name, 0)] = (tuple, list(dsk.keys())) |
| 2392 | return dsk |
| 2393 | |
| 2394 | |
| 2395 | class ResetIndex(Elemwise): |