polars.Expr.meta.tree_format# Expr.meta.tree_format( *, return_as_string: bool = False, schema: None | SchemaDict = None, ) → str | None[source]# Format the expression as a tree. Parameters: return_as_string:If True, return as string rather than printing to stdout. Examples >>> e = (pl.col("foo") * pl.col("bar")).sum().over(pl.col("ham")) / 2 >>> e.meta.tree_format(return_as_string=True)