Test the validity of a given Australian Tax File Number (TFN).
import Tfn
tfnIsValid = Tfn.isValid "555-000-555"
--> tfnIsValid == True
tfnIsInvalid = Tfn.isValid "123-456-789"
--> tfnIsInvalid == False
Test the validity of a given Australian Tax File Number (TFN).
import Tfn
tfnIsValid = Tfn.isValid "555-000-555"
--> tfnIsValid == True
tfnIsInvalid = Tfn.isValid "123-456-789"
--> tfnIsInvalid == False