Practical Python: Learn Python Basics Step by Step- Python 3 - Functions

The video tutorial introduces functions as reusable blocks of code that simplify programming by reducing complexity and keeping code clean. It explains how to create a function using the 'def' keyword, followed by the function name and proper indentation. The tutorial also covers calling a function to execute its code and demonstrates the reusability of functions by calling them multiple times. The importance of defining a function before calling it is emphasized to avoid errors.

Why are functions important in programming?

• They make code execution faster.

• They help in creating reusable code blocks.

• They increase the size of the code.

• They make the code harder to read.

What is the first step in creating a function?

• Write the function name.

• Call the function.

• Write 'def' followed by a space.

• Add instructions inside the function.

What is the purpose of indentation in a function?

• To make the code look neat.

• To separate different functions.

• To indicate the start of a new function.

• To specify the instructions within the function.

What happens if you define a function but do not call it?

• The function will execute automatically.

• The function will not execute.

• The function will cause an error.

• The function will be deleted.

How can you execute a function multiple times?

• By copying the function code.

• By defining it multiple times.

• By calling it multiple times.

• By using a loop inside the function.