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

[deanhystad]

Your examples are more baffling than illustrative. Is somemethod() supposed to be a method of Aclass? In your example it is a function, not a method of Aclass. An example should be valid Python code.

class Bclass:
    pass

class Aclass:
    def somemethod(self):
         self.B = Bclass

obj_a = Aclass()
obj_a.B   # Will raise an AttributeError because B does not exist yet.
obj_a.somemethod()  # This creates B
obj_a,B  # Returns Bclass.

The answer is that an object attribute is an object attribute. The type of the attribute does not matter.