Tim Peters wrote:

>     The need for this class has been largely supplanted by the
>     ability to subclass directly from dict ...

Yes, that's exactly what I was referring to.

> I agree pop() should be added.  Work up a patch, or at least open a bug
> report?

I can do the patch, and I should even be able to check it in. Would
anybody object?

> Note that there are two relevant classes, PersistentDict and
> PersistentMapping.  The code duplication there sucks (particularly because
> they can-- and do --get out of synch), and one of them should be deprecated.

Was there ever a semantic difference, maybe along the lines of mapping
interface vs dict implementation?


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