v2ex11

gistfile1.txt

class num: 
    def __init__(self,v): 
        self.v=v 

    def double(self): 
        return self.v*2 


x=num(2) 
bound=x.double 
print bound.__self__ 
print bound.__self__.v
print bound()

输出
<__main__.num instance at 0x102a71098>
2
4