Quick Answer
The answer is `__getattribute__`, because this special method is called unconditionally for every attribute access on an instance, making it the correct choice for logging all attribute accesses. Overriding `__getattribute__` allows you to intercept and log each access before the attribute is retrieved, whereas `__getattr__` is only invoked when the attribute is not found via normal lookup. On the Certified Associate Python Programmer PCAP exam, this distinction tests your understanding of Python’s attribute access protocol and object model, often appearing in questions about debugging, auditing, or metaprogramming. A common trap is confusing `__getattribute__` with `__getattr__`—remember that `__getattr__` is a fallback for missing attributes only. For a memory tip, think of `__getattribute__` as the “always-on” gatekeeper for every dot access, while `__getattr__` is the “last resort” rescue handler.
This PCAP practice question tests your understanding of object-oriented programming. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A developer wants to create a class that logs every attribute access on an instance. Which special method should they override?
`__getattr__`
Why wrong: `__getattr__` is only called when the attribute is not found via normal lookup, not for every access.
`__getattribute__`
This method is invoked for every attribute access, making it suitable for logging.
`__setattr__`
Why wrong: `__setattr__` is called for attribute assignment, not access.
`__delattr__`
Why wrong: `__delattr__` is called for attribute deletion, not access.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
`__getattribute__`
Option B is correct because `__getattribute__` is the special method that is called unconditionally for every attribute access on an instance, making it the appropriate choice for logging all attribute accesses. Overriding this method allows the developer to intercept and log each access before the attribute is retrieved, whereas `__getattr__` is only invoked when the attribute is not found via normal lookup.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
`__getattr__`
Why it's wrong here
`__getattr__` is only called when the attribute is not found via normal lookup, not for every access.
`__getattribute__`
Why this is correct
This method is invoked for every attribute access, making it suitable for logging.
Related concept
Read the scenario before looking for a memorised answer.
`__setattr__`
Why it's wrong here
`__setattr__` is called for attribute assignment, not access.
`__delattr__`
Why it's wrong here
`__delattr__` is called for attribute deletion, not access.
Common exam traps
The trap here is that candidates confuse `__getattr__` (called only on missing attributes) with `__getattribute__` (called on every access), and Python Institute often tests this distinction by presenting a scenario requiring unconditional interception.
Detailed technical explanation
Under the hood, `__getattribute__` is the first method invoked for any attribute access (including methods and dunder attributes), and its default implementation performs the actual lookup in the instance's `__dict__`, the class, and its bases. Overriding it requires caution because any call to `self.attribute` inside the override will recursively invoke `__getattribute__` again, leading to infinite recursion unless you use `object.__getattribute__(self, name)` to bypass the override. In real-world scenarios, this is used in proxies, lazy loading, or debugging frameworks like `wrapt` or `__getattr__`-based delegation.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Object-Oriented Programming — study guide chapter
Learn the concepts, then practise the questions
Object-Oriented Programming practice questions
Targeted practice on this topic area only
All PCAP questions
511 questions across all exam domains
Certified Associate Python Programmer PCAP study guide
Full concept coverage aligned to exam objectives
PCAP practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise PCAP questions linked to Modules and Packages.
Practise PCAP questions linked to Strings.
Practise PCAP questions linked to Object-Oriented Programming.
Practise PCAP questions linked to Exceptions and File I/O.
Practise PCAP questions linked to PCAP fundamentals.
Practise PCAP questions linked to PCAP scenario.
Practise PCAP questions linked to PCAP troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Object-Oriented Programming — This question tests Object-Oriented Programming — Read the scenario before looking for a memorised answer..
The correct answer is: `__getattribute__` — Option B is correct because `__getattribute__` is the special method that is called unconditionally for every attribute access on an instance, making it the appropriate choice for logging all attribute accesses. Overriding this method allows the developer to intercept and log each access before the attribute is retrieved, whereas `__getattr__` is only invoked when the attribute is not found via normal lookup.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A developer wants a class 'LoggedDict' that behaves like a dict but logs all attribute access in the console. Which method override correctly implements this for getting an attribute?
hardWhy B: Option B is correct because `__getattribute__` is the universal method called for every attribute access on an object. By overriding it, the developer can log the attribute name before delegating to the superclass implementation via `super().__getattribute__(name)`, which preserves the normal attribute lookup chain. This ensures that all attribute accesses (including those that exist and those that don't) are logged, which is the requirement for 'LoggedDict'.
Last reviewed: Jun 30, 2026
This PCAP 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 PCAP exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.