今天想用python的装饰器做一个运算，代码如下
>>> def mu(x):
def _mu(*args,**kwargs):
return x*x
return _mu
>>> @mu
def test(x,y):
print '%s,%s' %(x,y)
>>> test(3,5)
Traceback (most recent call last):
File "<pyshell>", line 1, in <module>
test(3,5)
File "<pyshell>", line 3, in _mu
return x*x
Typ
