Python OOP Review Questions – Object-Oriented Programming Practice

Test and review your Python OOP knowledge with practice questions on classes, objects, inheritance, polymorphism, encapsulation, and abstraction.

✅ Review Questions – Polymorphism in Python

🔹 Conceptual Questions

1. What is polymorphism in Python?
2. Why is polymorphism important in object-oriented programming?
3. How does polymorphism improve code reusability?
4. Differentiate between polymorphism and inheritance.

🔹 Method Overriding

1. What is method overriding in Python?
2. How does method overriding support polymorphism?
3. What happens if a child class does not override a parent method?
4. Write an example of method overriding.

🔹 Duck Typing

1. What is duck typing in Python?
2. Explain duck typing with a real-life example.

🔹 Operator Overloading

1. What is operator overloading?
2. How does Python support operator overloading?

🔹 Application-Based Questions

1. How is polymorphism used in real-world applications like payment systems?
2. Explain polymorphism in terms of shapes (e.g., draw method).

🔹 Code-Based Questions

1. What will be the output?

class Animal:
    def speak(self):
        print("Animal")

class Cat(Animal):
    def speak(self):
        print("Meow")

obj = Cat()
obj.speak()

1. What will be the output?

def show(x):
    print(x * 2)

show(5)
show("Hi")

1. Identify the concept used:

class A:
    def display(self):
        print("A")

class B:
    def display(self):
        print("B")

def show(obj):
    obj.display()

1. What will be the output?

class Test:
    def __init__(self, x):
        self.x = x

    def __add__(self, other):
        return Test(self.x + other.x)

t1 = Test(10)
t2 = Test(20)
print((t1 + t2).x)

🔹 Critical Thinking

1. Compare method overriding and operator overloading.
2. Can polymorphism exist without inheritance? Explain.