Question

class x():
    def __init__(self):
        self.z=2

class hi():
    def __init__(self):
        self.child=x()

f=hi()
print f.z

I want it to print 2.

Basically I want to forward any calls to that class to another class.

Answer 1

The simplest approach is implementing __getattr__:

class hi():
    def __init__(self):
        self.child=x()

    def __getattr__(self, attr):
        return getattr(self.child, attr)

This has certain disadvantages, but it might work for your limited use case. You might want to implement __hasattr__ and __setattr__ as well.