PCPP2 Design Patterns Practice Question
In the Decorator pattern, why is it preferred to use the functools.wraps decorator when creating a function decorator?
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
✓
It preserves the metadata of the original function
functools.wraps preserves the metadata (like __name__ and __doc__) of the original function, which is critical for debugging and reflection.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It automatically implements the Singleton pattern
Why it's wrong here
It has nothing to do with Singleton.
- ✗
It prevents the decorator from being applied multiple times
Why it's wrong here
It does not restrict multiple applications.
- ✓
It preserves the metadata of the original function
Why this is correct
This is exactly what functools.wraps is designed for.
- ✗
It ensures the function runs faster
Why it's wrong here
It has no performance impact.
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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.