PCEP Computer Programming and Python Fundamentals Practice Question
Which THREE of the following are correct ways to create a list containing the numbers 1, 2, 3? (Choose three.)
⚠ Common exam trap
The PCEP exam often tests the distinction between list literals (`[]`), tuple literals (`()`), and set literals (`{}`), trapping candidates who confuse the syntax for these different data structures.
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
✓
[x for x in range(1,4)]
It uses a list comprehension with `range(1,4)`, which generates the numbers 1, 2, and 3 and collects them into a new list. This is a concise and valid Python syntax for creating a list from an iterable.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
[x for x in range(1,4)]
Why this is correct
List comprehension.
- ✗
(1, 2, 3)
Why it's wrong here
This is a tuple.
- ✓
list((1, 2, 3))
Why this is correct
Converts tuple to list.
- ✓
[1, 2, 3]
Why this is correct
Standard list literal.
- ✗
{1, 2, 3}
Why it's wrong here
This is a set literal.
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