Module column 

Structs

Column

Column - represents a column in a DataFrame, used for building expressions Thin wrapper around Polars Expr. May carry a DeferredRandom for rand/randn so with_column can produce one value per row. May carry UdfCall for Python UDFs (eager execution at with_column).

Enums

DeferredRandom

Deferred random column: when added via with_column, we generate a full-length series in one go (PySpark-like).