How does numpy do this?

[rudihammad]

Ok let me explain it with a very simple example then.
I know the following doesn't work but it to shows what I am trying to do.

class Foo(object):
    
    def __new__(cls):
        cls.someVar = 5
        return cls.someVar
    
    def asList():
        return [cls.someVar]
               
f = Foo()   # Resutl: 5
f.asList()  # <-- I would like be able to do this and get: [5]

I get why it doesn't work, because f return an integer and it doesn't have that asList() method. So basically what I meant is if it possible to do what I intended in code above.