[Solved] What will be the output of this code?class Animal: def sound(self): return "Some sound" class Dog(Animal): def sound(self): return "Bark" class Cat(Animal): def sound(self):... | Python

Python - Polymorphism and Dynamic Behavior

What will be the output of this code?

class Animal:
    def sound(self):
        return "Some sound"

class Dog(Animal):
    def sound(self):
        return "Bark"

class Cat(Animal):
    def sound(self):
        return "Meow"

animals = [Dog(), Cat(), Animal()]
for a in animals:
    print(a.sound())

ABark\nMeow\nSome sound

BSome sound\nSome sound\nSome sound

CBark\nMeow\nError

DError\nError\nError

Step-by-Step Solution

Solution:

Step 1: Identify method overriding
Dog and Cat classes override sound method to return "Bark" and "Meow" respectively.
Step 2: Trace the loop output
Loop calls sound() on Dog(), Cat(), and Animal() objects, printing "Bark", "Meow", and "Some sound".
Final Answer:
Bark Meow Some sound -> Option A
Quick Check:
Overridden methods print their own sounds [OK]

Quick Trick: Child method overrides parent, prints child's return [OK]

Common Mistakes:

Assuming parent method always runs
Expecting errors from calling base class method
Mixing output order

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What will be the output of this code?

Step 1: Identify method overriding

Step 2: Trace the loop output

Final Answer:

Quick Check:

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