Methods with parameters in Python - Mini Project: Build & Apply

Methods with parameters

📖 Scenario: You are creating a simple calculator program that can add two numbers. This program will help users quickly add any two numbers they want.

🎯 Goal: Build a program with a method that takes two numbers as parameters and returns their sum. Then, use this method to add two specific numbers and show the result.

📋 What You'll Learn

Create a method that accepts two parameters

Return the sum of the two parameters

Call the method with two numbers

Print the result of the method call

💡 Why This Matters

🌍 Real World

Methods with parameters are used in almost every program to perform tasks with different inputs, like calculators, games, or data processing.

💼 Career

Understanding how to write and use methods with parameters is a key skill for software developers to create reusable and organized code.

1

Create the method with parameters

Write a method called add_numbers that takes two parameters named num1 and num2. Inside the method, return the sum of num1 and num2.

Python

# Define the method add_numbers with parameters num1 and num2
# Your code here

Need a hint?

Remember to use def to create a method and include both parameters inside the parentheses.

2

Set two numbers to add

Create two variables called first_number and second_number. Set first_number to 8 and second_number to 12.

Python

def add_numbers(num1, num2):
    return num1 + num2

# Create variables first_number and second_number with values 8 and 12
# Your code here

Need a hint?

Use simple assignment to set the variables to the exact numbers.

3

Call the method with the numbers

Create a variable called result and set it to the value returned by calling add_numbers with first_number and second_number as arguments.

Python

def add_numbers(num1, num2):
    return num1 + num2

first_number = 8
second_number = 12

# Call add_numbers with first_number and second_number and store in result
# Your code here

Need a hint?

Call the method by passing the two variables inside the parentheses.

4

Print the result

Write a print statement to display the value of the variable result.

Python

def add_numbers(num1, num2):
    return num1 + num2

first_number = 8
second_number = 12

result = add_numbers(first_number, second_number)

# Print the result
# Your code here

Need a hint?

Use print(result) to show the sum on the screen.