Meta#

The following methods are available under the expr.meta attribute.

Expr.meta.output_name()

Get the column name that this expression would produce.

Expr.meta.pop()

Pop the latest expression and return the input(s) of the popped expression.

Expr.meta.root_names()

Get a list with the root column name.

Expr.meta.undo_aliases()

Undo any renaming operation like alias or keep_name.