Awesome, thanks for that.

On Fri, Aug 29, 2014 at 10:43 PM, Michael Bayer <mike...@zzzcomputing.com>
wrote:

> not a shorter way, but more correct in case you have columns mapped to
> different names:
>
> mp1 = inspect(instance1)
> mp2 = inspect(Class2)
>
> Class2(**dict(
>
> zip(
> mp2.get_property_by_column(col).key for col in mp2.primary_key,
> mp1.primary_key_from_instance(instance1)
> )
>
> ))
>
>
>
>
> On Aug 27, 2014, at 9:24 PM, Gerald Thibault <dieselmach...@gmail.com>
> wrote:
>
> # instance1 is an instance of Class1, i want to create Class2 with the
> same pk
>
> keys = [key.name for key in class_mapper(Class2).primary_key]
> cls, values = identity_key(instance=instance1)
> kwargs = dict(zip(keys, values))
> instance2 = Class2(**kwargs)
>
>
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