Basic pie chart with plt.pie in Matplotlib - Mini Project: Build & Apply

Basic pie chart with plt.pie

📖 Scenario: You work in a small bakery and want to show which types of bread sell the most. You have the sales numbers for different bread types.

🎯 Goal: Create a pie chart using plt.pie to show the sales distribution of bread types.

📋 What You'll Learn

Create a dictionary called bread_sales with exact keys and values

Create a list called labels from the dictionary keys

Create a list called sizes from the dictionary values

Use plt.pie with sizes and labels to make the pie chart

Display the pie chart with plt.show()

💡 Why This Matters

🌍 Real World

Pie charts help businesses quickly see how parts contribute to a whole, like sales of different products.

💼 Career

Data analysts and scientists often use pie charts to present categorical data visually to stakeholders.

1

Create the bread sales data

Create a dictionary called bread_sales with these exact entries: 'White': 40, 'Wheat': 25, 'Rye': 20, 'Sourdough': 15.

Matplotlib

# Your code here

Need a hint?

Use curly braces {} to create a dictionary with the given keys and values.

2

Prepare labels and sizes lists

Create a list called labels from the keys of bread_sales and a list called sizes from the values of bread_sales.

Matplotlib

bread_sales = {'White': 40, 'Wheat': 25, 'Rye': 20, 'Sourdough': 15}
# Your code here

Need a hint?

Use list() with bread_sales.keys() and bread_sales.values() to get the lists.

3

Create the pie chart

Import matplotlib.pyplot as plt and use plt.pie with sizes and labels to create the pie chart.

Matplotlib

bread_sales = {'White': 40, 'Wheat': 25, 'Rye': 20, 'Sourdough': 15}
labels = list(bread_sales.keys())
sizes = list(bread_sales.values())
# Your code here

Need a hint?

Use import matplotlib.pyplot as plt and then plt.pie() with the right arguments.

4

Show the pie chart

Use plt.show() to display the pie chart.

Matplotlib

import matplotlib.pyplot as plt

bread_sales = {'White': 40, 'Wheat': 25, 'Rye': 20, 'Sourdough': 15}
labels = list(bread_sales.keys())
sizes = list(bread_sales.values())

plt.pie(sizes, labels=labels)
# Your code here

Need a hint?

Call plt.show() to open the pie chart window.