Decorators in Python

decorators.py

def honorific(klass):
    class HonorificClass(klass):
        def full_name(self):
            return 'Dr. ' + super(HonorificClass, self).full_name()
    return HonorificClass

@honorific
class Person(object):
    def __init__(self, first, last):
        self.first = first
        self.last = last
    
    def full_name(self):
        return ' '.join([self.first, self.last])

name = Person('Emmet', 'Brown').full_name()
print 'full name: {0}'.format(name)     # full name: Dr. Emmet Brown