Why conditional statements are needed in Python - See It in Action

Why conditional statements are needed

📖 Scenario: Imagine you are creating a simple program that helps decide what to wear based on the weather. Sometimes it is sunny, sometimes rainy, and sometimes cold. You want the program to give different advice depending on the weather.

🎯 Goal: You will build a small program that uses conditional statements to give clothing advice based on the weather condition.

📋 What You'll Learn

Create a variable called weather with the exact value 'sunny'.

Create a variable called advice and set it to an empty string.

Use an if statement to check if weather is 'sunny' and set advice to 'Wear sunglasses.'.

Use an elif statement to check if weather is 'rainy' and set advice to 'Take an umbrella.'.

Use an else statement to set advice to 'Wear a jacket.'.

Print the advice variable.

💡 Why This Matters

🌍 Real World

Conditional statements are used in many real-life programs like weather apps, games, and websites to make decisions based on user input or data.

💼 Career

Understanding how to use conditional statements is a basic skill for any programming job because it helps you control the flow of your program.

1

Create the weather variable

Create a variable called weather and set it to the string 'sunny'.

Python

# Create the variable weather with value 'sunny'
# Your code here

Need a hint?

Use the equals sign = to assign the value 'sunny' to the variable weather.

2

Create the advice variable

Create a variable called advice and set it to an empty string ''.

Python

weather = 'sunny'
# Create the variable advice as an empty string
# Your code here

Need a hint?

Set advice to '' to start with no advice.

3

Add conditional statements for weather

Use an if statement to check if weather is 'sunny' and set advice to 'Wear sunglasses.'. Then use an elif statement to check if weather is 'rainy' and set advice to 'Take an umbrella.'. Finally, use an else statement to set advice to 'Wear a jacket.'.

Python

weather = 'sunny'
advice = ''
# Use if, elif, else to set advice based on weather
# Your code here

Need a hint?

Use if, elif, and else to check the weather and set the advice.

4

Print the advice

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

Python

weather = 'sunny'
advice = ''
if weather == 'sunny':
    advice = 'Wear sunglasses.'
elif weather == 'rainy':
    advice = 'Take an umbrella.'
else:
    advice = 'Wear a jacket.'
# Print the advice
# Your code here

Need a hint?

Use print(advice) to show the advice on the screen.