ray.data.expressions.RandomExpr#

class ray.data.expressions.RandomExpr(seed: int | None = None, reseed_after_execution: bool = True, _instance_id: str = ...)[source]#

Bases: Expr

Expression that represents a random number generation operation.

Parameters:

seed – The seed to use for the random number generator.
reseed_after_execution – Whether to reseed the random number generator after each execution. This parameter is ignored when seed is None.

Example

>>> from ray.data.expressions import random
>>> random()
RANDOM()
>>> random(seed=1234)
RANDOM(seed=1234, reseed_after_execution=True)

DeveloperAPI: This API may change across minor Ray releases.

Methods

`abs`	Compute the absolute value of the expression.
`acos`	Compute the arccosine (inverse cosine) of the expression, returning radians.
`alias`	Rename the expression.
`asin`	Compute the arcsine (inverse sine) of the expression, returning radians.
`atan`	Compute the arctangent (inverse tangent) of the expression, returning radians.
`cast`	Cast the expression to a specified type.
`ceil`	Round values up to the nearest integer.
`cos`	Compute the cosine of the expression (in radians).
`exp`	Compute the natural exponential of the expression.
`floor`	Round values down to the nearest integer.
`is_in`	Check if the expression value is in a list of values.
`is_not_null`	Check if the expression value is not null.
`is_null`	Check if the expression value is null.
`ln`	Compute the natural logarithm of the expression.
`log10`	Compute the base-10 logarithm of the expression.
`log2`	Compute the base-2 logarithm of the expression.
`negate`	Compute the negation of the expression.
`not_in`	Check if the expression value is not in a list of values.
`power`	Raise the expression to the given power.
`round`	Round values to the nearest integer using PyArrow semantics.
`sign`	Compute the sign of the expression.
`sin`	Compute the sine of the expression (in radians).
`tan`	Compute the tangent of the expression (in radians).
`to_pyarrow`	Convert this Ray Data expression to a PyArrow compute expression.
`trunc`	Truncate fractional values toward zero.

Attributes

`arr`	Access array operations for this expression.
`dt`	Access datetime operations for this expression.
`list`	Access list operations for this expression.
`map`	Access map/dict operations for this expression.
`name`	Get the name associated with this expression.
`reseed_after_execution`
`seed`
`str`	Access string operations for this expression.
`struct`	Access struct operations for this expression.
`data_type`