[Python-3000] PEP: Eliminate del (original) (raw)

Michael Bayer mike_mp at zzzcomputing.com
Fri May 4 16:21:59 CEST 2007

On May 4, 2007, at 1:12 AM, Raymond Hettinger wrote:

From: "Greg Ewing" <greg.ewing at canterbury.ac.nz>

It has nothing to do with cyclic GC. The point is that if the refcount of a weak reference drops to zero before that of the object being weakly referenced, the weak reference object itself is deallocated and its callback is not called. So having the resource-using object hold the weak ref to the resource doesn't work -- it has to be kept in some kind of separate registry. I'll write-up an idiomaticc approach an include it in PEP this weekend.

why not encapsulate the "proper" weakref-based approach in an easy-to- use method such as "close()" ? that way nobody has to guess how
to follow this pattern.

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