python figure which properties belong to the child class

Question

I have a python class hierarchy as follows:

class A:
    def __init__(self):
        self.a = 1
        self.b = 2

class B(A):
    def __init__(self):
        super(B, self).__init__()
        self.c = 3

Now when I do something like:

obj = B()
obj.__dict__

I get:

{'a': 1, 'b': 2, 'c': 3}

is it possible to identify which of these properties belong to the parent class or rather which of these properties are of the child only?

Answer 1

For your simple example, you could get the difference in the dict items:

print(obj.__dict__.items() - A().__dict__.items())

I suppose we should at least to it without knowing the name of the parent class:

 print(obj.__dict__.items() - obj.__class__.__bases__[0]().__dict__.items())