PCPP1 Advanced Object Oriented Programming Practice Question
What happens when you add two objects of a class that implements __add__?
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
✓
The __add__ method is called.
The __add__ method is automatically called by the interpreter when the '+' operator is used.
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 does nothing.
Why it's wrong here
The interpreter performs the calculation.
- ✗
It concatenates the objects.
Why it's wrong here
Only if defined that way.
- ✗
It raises a TypeError.
Why it's wrong here
Not if __add__ is defined.
- ✓
The __add__ method is called.
Why this is correct
This is how operator overloading works.
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Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP1 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 PCPP1 exam.