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Review Questions on Python OOP Inheritance – Test Your Understanding

Reinforce your Python OOP inheritance knowledge with review questions designed to test your grasp of single, multiple, and multilevel inheritance. Ideal for students and beginners.

🔍 Review Questions

  1. What is inheritance in Python?

  2. Answer

    Inheritance in Python allows a class (child class) to inherit attributes and methods from another class (parent class), promoting code reusability and creating a hierarchical relationship between classes.

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  3. How does Python handle method resolution order (MRO) in the case of multiple inheritance?

  4. Answer

    Python uses the C3 Linearization algorithm to determine the method resolution order (MRO) when multiple inheritance is involved. This ensures that methods are called in a consistent order, from left to right in the class hierarchy.

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  5. What happens if a subclass does not override a method from the parent class?

  6. Answer

    If a subclass does not override a method, the child class inherits the method from the parent class and can use it as-is without any modification.

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  7. Why would you use the super() function in a subclass constructor?

  8. Answer

    The super() function is used in a subclass constructor to call the parent class's constructor (__init__), ensuring that the parent class’s attributes are initialized properly in the child class.

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  9. Can a child class in Python access private attributes of the parent class?

  10. Answer

    No, private attributes in Python (those prefixed with __) are name-mangled and are not directly accessible in the child class or outside the parent class.

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  11. What is the difference between method overriding and method overloading in Python?

  12. Answer

    Method overriding occurs when a subclass provides a specific implementation of a method that is already defined in the parent class. Python does not support method overloading in the traditional sense, but method overloading can be simulated using default or variable-length arguments.

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  13. In the case of a class hierarchy, which of the following will be true about the child class's constructor (__init__ method)?

  14. Answer

    The parent class's constructor is not automatically called unless explicitly invoked using super(). If the child class defines its own constructor, it can call super().__init__() to invoke the parent class’s constructor and initialize the inherited attributes.

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