```
class Parent:
    def __init__(self):
        self.__num = 100

    def show(self):
        print("Parent:",self.__num)

class Child(Parent):  
    def __init__(self):
        self.__var = 10
    def show(self):
        super().show()
        print("Child:",self.__var)   

obj1 = Child()
obj1.show()

```

> 
> File "main.py", line 12, in show  
> 
>  super().show()  
> 
>  File "main.py", line 6, in show  
> 
>  print("Parent:",self.\_\_num)  
> 
>  AttributeError: 'Child' object has no attribute '\_Parent\_\_num'
> 
> 
>