The correct way to call the parent class's __init__ in Python is super().__init__(arg1, arg2). This works because super() returns a temporary proxy object that delegates method calls to the parent class, allowing you to invoke its __init__ method explicitly while passing the required arguments. On the Certified Associate Python Programmer PCAP exam, this concept tests your understanding of inheritance and proper object initialization in class hierarchies—a common trap is trying to call ParentClass.__init__(self, arg1, arg2) directly, which can break in multiple inheritance scenarios. The super() approach is preferred because it follows the MRO (Method Resolution Order) and ensures each parent in a diamond inheritance chain is called only once. For a quick memory tip: think of super() as the "safety net" that always finds the right parent, so you never need to hardcode the class name.
PCAP Object-Oriented Programming Practice Question
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 defines a class with an __init__ method that sets instance attributes. Which of the following is the correct way to call the parent class's __init__ from a child class?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
super().__init__(arg1, arg2)
In Python, to call the parent class's __init__ method, you should use super().__init__() with the appropriate arguments. This ensures proper initialization in inheritance hierarchies.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
super(self, Child).__init__(arg1, arg2)
Why it's wrong here
In Python 3, super() can be called without arguments. This syntax is incorrect.
✗
Parent.__init__(self, arg1, arg2)
Why it's wrong here
This works but is not recommended because it can break in multiple inheritance scenarios.
✗
Child.__init__(self, arg1, arg2)
Why it's wrong here
This would call the child's own __init__ again, leading to infinite recursion.
✓
super().__init__(arg1, arg2)
Why this is correct
super() returns a proxy object that delegates method calls to the parent class, and __init__ is called automatically with self.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Scenario analysis trap
This works but is not recommended because it can break in multiple inheritance scenarios.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which PCAP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Object-Oriented Programming — This question tests Object-Oriented Programming — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: super().__init__(arg1, arg2) — In Python, to call the parent class's __init__ method, you should use super().__init__() with the appropriate arguments. This ensures proper initialization in inheritance hierarchies.
What should I do if I get this PCAP question wrong?
Identify which PCAP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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