Hi,
Is weak reference callback called immediately after the referenced
object is deleted or at arbitrary point in time after that? I.e. is
it possible to see a dead reference before the callback is called?
More formally, will this ever raise?
callback_called = False
def note_deletion (ref):
callback_called = True
x = ...
ref = weakref.ref (x, note_deletion)
...
if ref () is None and not callback_called:
raise RuntimeError ("reference is dead, yet callback hasn't been called
yet")
Paul
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