polars.Expr.meta.undo_aliases

Expr.meta.undo_aliases() → Expr

Undo any renaming operation like alias or name.keep.

Examples

>>> e = pl.col("foo").alias("bar")
>>> e.meta.undo_aliases().meta == pl.col("foo")
True
>>> e = pl.col("foo").sum().over("bar")
>>> e.name.keep().meta.undo_aliases().meta == e
True