Hi Thomas,
Thomas Lehmann <[email protected]> writes:
>> r = weakref.ref(o.myfunc)
>> print r()
>> >>>> None
> 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...
This is clear: in your case, o.myfunc is explicitely referenced by k,
this avoids the garbage collection.
My problem is that I have a class that delegates a function call, like:
--------------------8<------------------
import weakref
class WeakDelegator(object):
def __init__(self, func):
self._func = weakref.ref(func)
def __call__(self):
func = self._func()
return func() if func else None
--------------------8<------------------
This does not work for bound methods because the weak reference to a
bound method will always point to None, even if the object still exists.
Why is that the case and how can I implement such a class properly?
Best regards
Ole
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