具有定义/捕获的所有可能方法的类

Question

我试图组合一个类似stringIO的函数,我想知道是否有可能构建一个捕获所有可能方法的类,以便以下方法可行:

a = magicclass("Hello World!") #Hello world would be the return
print a() #Would print Hello world
print a.read() #should also print hello world
print a.adsf.asdf.xyz.random() #should also print hello world

我不知道如何通过这个,我可以定义我想要调用的所有可能的方法,但如果我想将它传递给黑盒函数,这将是有问题的.

#This works, but only for the main method.
#Every submethod has to have its own class defined, if you know what I mean.
def emptyreturnfunc(returnval): lambda: returnval
b = emptyreturnfunc("Hello World")
print b() #Does work
print b.asdf() #Doesn't work.

当然,我知道为什么会这样,但我怎样才能让它发挥作用呢？任何提示？

Answer 1

class A(object):
    def __init__(self, msg):
        self.msg = msg

    def __call__(self):
        print self.msg

    def __getattr__(self, name):
        return self


a = A('Hello World')
a()
a.b()
a.b.c()