Format: Replace a value with a computed value

class txf.Format(source, outputs, function)

The Format transform reformats the values of a field using a user-supplied function.

source: Transform

The input pipeline.

input: Transform

The name of the string field to apply the function to. The contents will be replaced, so use Copy to preserve the original.

function: callable

A Python callable that receives the original value and returns the reformatted value.

Usage

Format(p, 'Year', lambda x: x+1)