class Person:
    def __init__(self, name, job=None, pay=0):
        self.name = name
        self.job  = job
        self.pay  = pay

if __name__ == '__main__':
    bob = Person('Bob Smith')
    sue = Person('Sue Jones', job='dev', pay=100000)
    print(bob.name, bob.pay)
    print(sue.name, sue.pay)
    print(bob.name.split()[-1])            # Extract object's last name
    sue.pay *= 1.10                        # Give this object a raise
    print(f'{sue.pay:,.2f}')