Michael Bayer wrote:

you can still override create_instance() as well and try to spit out subclasses that are otherwise not mapped.


This was something I looked at a while ago as well, and I wasn't sure
what the requirements on objects returned from create_instance were. If
it is not overridden, the mapper calls _create_instance, which sets
_entity_name and calls attribute_manager.init_attr. How important are
these things to the rest of the library?

Simon

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