A list `words = ['cat', 'dog', 'bird']` needs a new list `lengths` containing the number of characters in each word: `[3, 3, 4]`. Which list comprehension produces this?

`lengths = [w.len() for w in words]`

`lengths = [len(w) for w in words]`

`lengths = [len(words) for w in words]`

Python InstitutePCEP - Certified Entry-Level Python Programmer

Domain 3Objective 1

PCEP-30-02 3.1 Collect and Process Data Using Lists PCEP-30 Practice Questions (Page 4)

Part of the Data Collections Tuples, Dictionaries, Lists, and Strings domain, which accounts for 25% of the PCEP-30 exam. Python Institute does not publish an official question count, but from its 45-minute exam (~20–30 total, ~5–8 in this domain), expect 1–2 from this objective — we provide 35 practice questions to prepare you well beyond it. (estimate)

35questions here

7free pages

15concepts

25%of the exam

15 Concepts in This Objective

Constructing vectors
Indexing and slicing lists
Using the len() function
Appending elements with append()
Inserting elements with insert()
Finding element index with index()
Other list methods
Sorting with sorted()
Deleting elements with del
Iterating through lists with for
Initializing loops
Using in and not in operators
List comprehensions
Copying and cloning lists
Lists in lists: matrices and cubes

Questions 16–20

16foundation · easy
Which method removes the first occurrence of a specified value from a list?
Select an answer first
17foundation · easy
Which method inserts an element at a specified position in a list?
Select an answer first
18application · easy
A program has `items = ['pen', 'pencil', 'eraser', 'pencil']` and must find the position of the first 'pencil'. Which code correctly retrieves this index?
Select an answer first
19foundation · easy
Given the list `data = [10, 20, 30, 40]`, what is the value of `data[-1]`?
Select an answer first
20application · easy
A list `words = ['cat', 'dog', 'bird']` needs a new list `lengths` containing the number of characters in each word: `[3, 3, 4]`. Which list comprehension produces this?
Select an answer first

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PCEP-30-02 3.1 Collect and Process Data Using Lists PCEP-30 Practice Questions (Page 4)

Questions 16–20

Which method removes the first occurrence of a specified value from a list?

Which method inserts an element at a specified position in a list?

A program has `items = ['pen', 'pencil', 'eraser', 'pencil']` and must find the position of the first 'pencil'. Which code correctly retrieves this index?

Given the list `data = [10, 20, 30, 40]`, what is the value of `data[-1]`?

A list `words = ['cat', 'dog', 'bird']` needs a new list `lengths` containing the number of characters in each word: `[3, 3, 4]`. Which list comprehension produces this?

Keep studying — Data Collections Tuples, Dictionaries, Lists, and Strings