And that binding generator is called Shiboken, which was motivated by boost::python and the same idea behind the binding generator written for Java in the old days (from QtJambi).
Technologically speaking: Yeah, that's a nice feature.
Real world: This will be awful, I really don't want any DB to have a photo of me associated with transaction or authentification. Yes, I do have profile pictures, but allowing a service to get a "stream" of your face will be way worse, and I cannot imagine what would happen if this DB get compromised...anyway...still a nice Black Mirror episode though..
At the moment Shiboken is more general, and mature and can be used even for C++ projects (which are not related to Qt). https://wiki.qt.io/Qt_for_Python/Shiboken