Possible to create an object inside another object that is visible outside that objec

[Gribouillis]

I want to know if I can do something, not if my very pseudo code is functional.

We are only trying to understand the question. Besides your pseudo code, all that we have is the title of the thread, but it does not explain what you want to do. What is an object inside an object? Do you mean a member of this object? In Python, all the internal structures are "visible from outside", in the sense that there is no real access control to the variables, so what does the question mean?