PCPP2 Design Patterns Practice Question
Which TWO of the following are valid ways to implement the Proxy pattern in Python?
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
✓
Inheriting from the target class and overriding its methods
Proxy can be implemented using class-based wrapping or by overriding magic methods like __getattr__.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Using the 'import' hook in the sys module
Why it's wrong here
This is for module loading, not object proxying.
- ✓
Inheriting from the target class and overriding its methods
Why this is correct
This is a standard way to implement a virtual or remote proxy.
- ✗
Using a decorator to modify the class structure
Why it's wrong here
Decorators modify the function or class, they are not the proxy implementation itself.
- ✗
Changing the global variable scope
Why it's wrong here
This is not a pattern implementation technique.
- ✓
Using the __getattr__ magic method to intercept property access
Why this is correct
This allows the proxy to act as a transparent wrapper.
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.