About output "Julia types" from Python functions.

Hi!
I would like to know if it is correct that all the outputs of python functions have julia type` Py`.
Is it possible to specify more the type in such a way to use multiple dispatch depending on the python type?
If not, which is the correct way to assign a specific julia type instead of `Py`?
For example, I am referring to this [python class](http://gala.adrian.pw/en/latest/api/gala.coordinates.GreatCircleICRSFrame.html).
Thank you.