decorator example

decorator

def makebold(fn):
    def wrapped():
        return '<b>' + fn() + '</b>'
    return wrapped

def makeitalic(fn):
    def wrapped():
        return '<i>' + fn() + '</i>'
    return wrapped

@makebold
@makeitalic
def hello():
    return "hello world"

print hello() ## returns <b><i>hello world</i></b>