[Python-Dev] weak refs in descriptors (http://bugs.python.org/issue17950) (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Mon May 13 19:36:45 CEST 2013

On Mon, 13 May 2013 13:21:17 -0400 Terry Jan Reedy <tjreedy at udel.edu> wrote:

On 5/13/2013 9:20 AM, Maciej Fijalkowski wrote:

> The strong reference there is a feature. Descriptors keep the class > alive if somehow the class disappears and the descriptor itself does Is this feature stated or implied in the reference manual? 3.3.2.1. Implementing Descriptors 3.3.2.2. Invoking Descriptors ??? or is it an implementation detail that people have come to rely on?

Any reference that is not documentedly weak is strong by definition; this is Python's basic semantics, there's no need to ask about documentation pointers.

The only question is whether some people rely on this particular one.

Regards

Antoine.

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