Sequence: Generate an integer sequence field

class txf.Sequence(source, output[[, start=0, step=1]])

The Sequence transform generate a sequence of integers. Its arguments are:

source: Transform or None

The input pipeline. If one is not provided, Sequence will generate rows indefinitely.

output: str

The name of the output field. It cannot overwrite existing fields. Use Drop to remove unwanted fields.

start: int

The start value for the sequence. Note that it defaults to zero, not one.

step: int

The increment amount for each record.

Usage

Sequence(p, 'Row #', 1)
Sequence(p, 'Even', 0, 2)