Method _task

dask/dataframe/dask_expr/_expr.py:3013–3014

(self, name: Key, index: int)

        return tuple(divisions)

    def _task(self, name: Key, index: int) -> Task:
        return Alias(name, (self.frame._name, self.partitions[index]))  # type: ignore

    def _simplify_down(self):
        from dask.dataframe.dask_expr import SetIndexBlockwise