Python 3: Project-based Python, Algorithms, Data Structures - Building if, elif, else blocks incrementally

The video tutorial explains the importance of functions in programming, demonstrating how to identify redundant code and refactor it into reusable functions. It covers defining functions, understanding variable scope, and using return values to enhance code efficiency. Practical examples illustrate how to apply these concepts effectively.

What is the role of the 'def' keyword in Python?

What are some common errors that can occur when defining functions?

Why is it important to have descriptive variable names in functions?

How can you modify the output of user input before displaying it?