PCEP Practice Question: Functions, Tuples, Dictionaries and Exceptions

Exhibit

Refer to the exhibit.

def process(data):
    return {item: len(item) for item in data}

print(process(['apple', 'banana', 'cherry']))

What is the output of the code in the exhibit?

⚠ Common exam trap

The PCEP exam often tests the distinction between `dict()` with a list of tuples versus other dictionary creation methods, and the trap here is that candidates mistakenly think the tuples are reversed or that keys are auto-generated as indices.

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

✓

{'apple':5, 'banana':6, 'cherry':6}

The code creates a dictionary using the `dict()` constructor with a list of tuples. Each tuple is a key-value pair. The keys are strings ('apple', 'banana', 'cherry') and the values are integers (5, 6, 6). The resulting dictionary is {'apple':5, 'banana':6, 'cherry':6}.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
{5:'apple', 6:'banana', 6:'cherry'}
Why it's wrong here
Swapped keys and values.
✗
{'apple':5, 'banana':7, 'cherry':6}
Why it's wrong here
Banana length is 6, not 7.
✗
{0:'apple', 1:'banana', 2:'cherry'}
Why it's wrong here
Uses index instead of length.
✓
{'apple':5, 'banana':6, 'cherry':6}
Why this is correct
Correct mapping of items to their lengths.

Go deeper

PCEP Practice Question: Functions, Tuples, Dictionaries and Exceptions

Exhibit

Why each option matters

Option-by-option breakdown

Related to this question