PCEP Computer Programming and Python Fundamentals Practice Question
This PCEP practice question tests your understanding of computer programming and python fundamentals. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
While debugging a Python script, you see the following error: 'IndentationError: expected an indented block'. The code appears to be correctly indented with spaces. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
You mixed tabs and spaces for indentation.
Option B is correct because mixing tabs and spaces confuses Python, and even if they look aligned, the interpreter sees inconsistency. Option A is wrong because a missing colon would cause a SyntaxError, not IndentationError. Option C is wrong because Python actually enforces consistent indentation. Option D is wrong because the error specifically indicates an indentation issue, not a logic error.
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.
✗
You used the wrong number of spaces (e.g., 2 spaces instead of 4).
Why it's wrong here
Python does not require a specific number, only consistency within a block.
✗
You forgot to include a colon at the end of a compound statement.
Why it's wrong here
Colon omission leads to SyntaxError, not IndentationError.
✗
The script has a logic error in the condition.
Why it's wrong here
Logic errors do not cause IndentationError.
✓
You mixed tabs and spaces for indentation.
Why this is correct
Mixture of tabs and spaces is a common cause of IndentationError.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
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.
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 practitioner preparing for the PCEP exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which PCEP 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.
Computer Programming and Python Fundamentals — This question tests Computer Programming and Python Fundamentals — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: You mixed tabs and spaces for indentation. — Option B is correct because mixing tabs and spaces confuses Python, and even if they look aligned, the interpreter sees inconsistency. Option A is wrong because a missing colon would cause a SyntaxError, not IndentationError. Option C is wrong because Python actually enforces consistent indentation. Option D is wrong because the error specifically indicates an indentation issue, not a logic error.
What should I do if I get this PCEP question wrong?
Identify which PCEP 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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This PCEP 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 PCEP exam.
Question Discussion
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