ray.data.expressions.ColumnExpr#

class ray.data.expressions.ColumnExpr(name: str)[source]#

Bases: Expr

Expression that references a column by name.

This expression type represents a reference to an existing column in the dataset. When evaluated, it returns the values from the specified column.

Parameters:

name – The name of the column to reference

Example

>>> from ray.data.expressions import col
>>> # Reference the "age" column
>>> age_expr = col("age") # Creates ColumnExpr(name="age")

DeveloperAPI: This API may change across minor Ray releases.

Methods

Attributes

name