[Python-Dev] reference leaks, __del__, and annotations

[Michael Hudson]

"Thomas Wouters" <thomas at python.org> writes:

> While we're at it, I would like for the new __del__ (which would
> probably have to be a new method) to disallow reviving self, just
> because it makes it unnecessarily complicated and it's rarely
> needed.

I'm not sure the problem is so much that anyone _wants_ to support
resurrection in __del__, it's just that it can't be prevented.

    l = []
    class A(object):
     def __del__(self):
      l.append(self)
    a = A()
    a = 1

What would you have this do?

And if we want to have a version of __del__ that can't reference
'self', we have it already: weakrefs with callbacks.  What happened to
the 'get rid of __del__ in py3k' idea?

Cheers,
mwh

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