PCPP2 Advanced OOP And Performance Practice Question
Which THREE of the following are benefits of using __slots__?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Faster attribute access
__slots__ reduces memory usage, prevents the creation of __dict__, and can potentially speed up attribute access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Faster attribute access
Why this is correct
Attribute access can be faster due to the structure of slots.
- ✓
Reduced memory footprint
Why this is correct
By omitting __dict__, each instance consumes less memory.
- ✗
Automatic support for multiple inheritance
Why it's wrong here
Multiple inheritance is complex with __slots__.
- ✗
Automatic serialization
Why it's wrong here
__slots__ does not inherently provide serialization.
- ✓
Prevention of __dict__ creation
Why this is correct
__slots__ explicitly instructs Python not to create a __dict__.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP2 practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCPP2 exam.