Functions in Python-1

Introduction

Before learning Functions, we should know:

1. Variables / Identifiers
2. Data Types
3. Operators
4. Keywords
5. Functions
6. What is a Function? A function is a set of instructions or a block of code used to perform a specific task.

In simple words, a function is a task or job.

Examples:

• Attending a class
• Playing cricket
• Adding two numbers
• Sending a message Example: Playing Cricket Steps involved in playing cricket:
• Invite friends.
• Take a bat and ball.
• Go to the ground.
• Toss.
• Start batting or fielding. These steps together perform one task: Playing Cricket.

1. How to Create a Function in Python?

We use the def keyword to define a function.

Syntax:

def function_name():
statements
Example:

def play():
print("Calling friends")
print("Taking bat and ball")
print("Going to ground")
print("Playing cricket")

Here:

• def is a keyword used to define a function.
• play is the function name.
• () represents the function parameters.
• Indentation represents the function body.