Practice Examples (25.3) - List Comprehension - Data Structures and Algorithms in Python
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Practice Questions

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Question 1 Easy

What does the following list comprehension generate? [x ** 2 for x in range(5)]

💡 Hint: Think of squaring numbers from 0 to 4.

Question 2 Easy

How can you use filter to get only odd numbers from a list?

💡 Hint: Remember the modulo operator to check for odd numbers.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the following code snippet return: list(map(lambda x: x**3, [1, 2, 3]))?

[1
2
3]
[1
4
9]
[1
8
27]

💡 Hint: Think of the operation of raising to the power of 3.

Question 2

Is it true that filter function can only return a list?

True
False

💡 Hint: Recall the output of functional programming functions.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Create a list comprehension that generates all non-repeating Pythagorean triples from numbers 1 to 50.

💡 Hint: Remember to prevent duplicates by adjusting the ranges.

Challenge 2 Hard

Write a single-line comprehension that creates a list of tuples representing (number, square) for the first ten natural numbers.

💡 Hint: Think about how you can use grouping within parentheses.

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