Method _simplify_down

dask/dataframe/dask_expr/_expr.py:2380–2383

(self)

        return (None, None)

    def _simplify_down(self):
        if isinstance(self.frame, Elemwise):
            child = max(self.frame.dependencies(), key=lambda expr: expr.npartitions)
            return Lengths(child)

    def _layer(self):
        name = f"part-{self._name}"