Python Tutorial 9.1 - List Comprehensions

Welcome to the “List Comprehensions” tutorial!

Overview

List comprehensions provide a concise way to create lists using a single line of code.

Syntax

[expression for item in iterable if condition]

Example

# Squares of even numbers from 0 to 9
squares = [x * x for x in range(10) if x % 2 == 0]
print(squares)  # [0, 4, 16, 36, 64]

Key Takeaways

• Compact syntax replaces loops and append().
• You can include an optional if clause for filtering.
• Improves readability for simple list transformations.

Happy coding!