[Solved] What will be the output of this code?class Bird: sound = "tweet" b1 = Bird() b2 = Bird() Bird.sound = "chirp" print(b1.sound, b2.sound) | Python

Python - Classes and Object Lifecycle

What will be the output of this code?

class Bird:
    sound = "tweet"

b1 = Bird()
b2 = Bird()
Bird.sound = "chirp"
print(b1.sound, b2.sound)

Atweet tweet

Bchirp chirp

Ctweet chirp

Dchirp tweet

Step-by-Step Solution

Solution:

Step 1: Understand class attribute change
Changing Bird.sound updates the class attribute for all instances that don't have an instance attribute.
Step 2: Check instance attributes
Neither b1 nor b2 has an instance attribute sound, so both use updated class attribute "chirp".
Final Answer:
chirp chirp -> Option B
Quick Check:
Class attribute change affects all instances without override [OK]

Quick Trick: Changing class attribute affects all instances without instance override [OK]

Common Mistakes:

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