Is there a way to tell an instance was saved without checking instalce.pk or doing a db lookup?

To check if the instance was saved one might do something like this:

def is_instance_saved(instance):

    if instance.pk is None:

        return False

    # in case pk was set manually

    try:

        instance.__class__.objects.get(pk=instance.pk)

    except ObjectDoesNotExist:

        return False

    return True

I wonder if the instance already knows whether it was saved or not (through some sort of private attribute).

Thanks

Sergiy

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