Python 装饰器

import  time

def hh(func):
  def wrapper(*args, **kwargs):
    start=time.clock()
    func(*args, **kwargs)
    end=time.clock()
    print 'time:%f'%(end - start)
  return wrapper
def out_log(func):
    def wrapper(*args, **kwargs):
        print 'stsart %s'%func
        func(*args, **kwargs)
        print 'end %s'%func
    return wrapper
def a(a,b):
    print a + b
def times(a,b):
    print a * b
@hh
@out_log
def say(a):
    print 'hello'

#say=hh(say)
#say=out_log(say('a'))
say('test')
#say()
#say()