This PCEP practice question tests your understanding of functions, tuples, dictionaries and exceptions. 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 function is defined as: def min_max(nums): return min(nums), max(nums). What type of value does it return?
A tuple
Correct: Multiple return values without brackets form a tuple.
A set
Why wrong: Sets use curly braces, but the comma syntax returns a tuple.
A dictionary
Why wrong: Dictionaries require key-value pairs.
A list
Why wrong: The return statement with commas creates a tuple, not a list.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
A tuple
The function `min_max` uses `return min(nums), max(nums)`, which is a comma-separated list of expressions. In Python, when multiple values are returned separated by commas, they are automatically packed into a tuple. Therefore, the function returns a tuple containing the minimum and maximum values.
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.
A tuple
Why this is correct
Correct: Multiple return values without brackets form a tuple.
Related concept
Read the scenario before looking for a memorised answer.
A set
Why it's wrong here
Sets use curly braces, but the comma syntax returns a tuple.
A dictionary
Why it's wrong here
Dictionaries require key-value pairs.
A list
Why it's wrong here
The return statement with commas creates a tuple, not a list.
Common exam traps
Cisco often tests the misconception that multiple return values are returned as a list or that parentheses are required to create a tuple, but in Python, it is the comma that defines a tuple, not the parentheses.
Detailed technical explanation
Under the hood, Python's return statement with multiple expressions implicitly creates a tuple via the comma operator. This is a fundamental behavior of Python's data model: the comma creates a tuple, not the parentheses. In real-world scenarios, this pattern is commonly used to return multiple results from a function, such as returning both the index and value from a search algorithm.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
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FAQ
Functions, Tuples, Dictionaries and Exceptions — This question tests Functions, Tuples, Dictionaries and Exceptions — Read the scenario before looking for a memorised answer..
The correct answer is: A tuple — The function `min_max` uses `return min(nums), max(nums)`, which is a comma-separated list of expressions. In Python, when multiple values are returned separated by commas, they are automatically packed into a tuple. Therefore, the function returns a tuple containing the minimum and maximum values.
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.
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Last reviewed: Jun 25, 2026
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.
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