weak reference to bound method

[Thomas Lehmann]

> I am trying to use a weak reference to a bound method:
>
> class MyClass(object):
>     def myfunc(self):
>         pass
>
> o = MyClass()
> print o.myfunc
> >>>>   <bound method MyClass.myfunc of <__main__.MyClass object at 0xc675d0>>
>
> import weakref
> r = weakref.ref(o.myfunc)
> print r()
> >>>>   None
>
> This is what I do not understand. The object "o" is still alive, and
> therefore the bound method "o.myfunc" shall exists.
>
> Why does the weak reference claim that it is removed? And how can I hold
> the reference to the method until the object is removed?
>

k = o.myfunc
r = weakref.ref(k)
print r()
>>>>>  <weakref at 00B80750; to 'method' at 00B59918 (myfunc)>

Don't ask me why! I have just been interested for what you are
trying...