Certified Professional in Python Programming (PCPP-32-101) — Question 39

Which function or operator should you use to obtain the answer True or False to the question "Do two variables refer to the same object?"

Answer options

• A. The == operator
• B. The isinstance() function
• C. The id() function
• D. The is function

Correct answer: D

Explanation

The correct answer is D, the is function, which checks if two variables reference the same object in memory. The == operator compares the values of the objects, not their identities, while isinstance() checks if an object is an instance of a particular class, and id() returns the object's unique identifier but does not directly answer the question.