Method _meta

dask/dataframe/dask_expr/_expr.py:3736–3739

(self)

    @functools.cached_property
    def _meta(self):
        if self.operand("meta") is not no_default:
            return self.operand("meta")
        return _get_meta_ufunc(self._dfs, self.args, self.func)

    def _lower(self):
        args = maybe_align_partitions(*self.args, divisions=self._divisions())