[Solved] What will be the output of this code?from abc import ABC, abstractmethod class Animal(ABC): @abstractmethod def sound(self): pass class Dog(Animal): def sound(self): return "Bark" print(Dog().sound()) | Python

Python - Polymorphism and Dynamic Behavior

What will be the output of this code?

from abc import ABC, abstractmethod

class Animal(ABC):
    @abstractmethod
    def sound(self):
        pass

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

print(Dog().sound())

ABark

BTypeError

CNone

DAttributeError

Step-by-Step Solution

Solution:

Step 1: Understand abstract base class behavior
The abstract method sound must be implemented in subclass Dog. Here, Dog provides the implementation returning "Bark".
Step 2: Predict output of print statement
Creating Dog() instance is allowed because all abstract methods are implemented. Calling sound() returns "Bark" which is printed.
Final Answer:
Bark -> Option A
Quick Check:
Implemented abstract method returns 'Bark' [OK]

Quick Trick: Subclass must implement all abstract methods to instantiate [OK]

Common Mistakes:

Expecting error despite full implementation
Confusing abstract method with normal method
Thinking abstract base class can be instantiated

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What will be the output of this code?

Step 1: Understand abstract base class behavior

Step 2: Predict output of print statement

Final Answer:

Quick Check:

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