PCPP2 Advanced OOP And Performance Practice Question
You are utilizing abstract base classes (ABCs). How do you enforce that a subclass implements a specific method?
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
✓
Use the @abstractmethod decorator
The @abstractmethod decorator marks a method as requiring implementation in concrete subclasses.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a metaclass check
Why it's wrong here
Metaclasses can perform checks, but @abstractmethod is the direct way.
- ✓
Use the @abstractmethod decorator
Why this is correct
@abstractmethod ensures the subclass cannot be instantiated without overriding the method.
- ✗
Raise NotImplementedError in the base class
Why it's wrong here
While this works, @abstractmethod is the formal ABC mechanism to prevent instantiation.
- ✗
Pass the method name to __init__
Why it's wrong here
This is not a valid way to enforce interface compliance.
About these practice questions
One of 194 original PCPP2 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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.