Formatting structured data in Python - Mini Project: Build & Apply

Formatting structured data

📖 Scenario: You work in a small shop and keep track of product prices in a dictionary. You want to show the prices neatly formatted with a dollar sign and two decimal places.

🎯 Goal: Create a dictionary of products and prices, then format the prices as strings with a dollar sign and two decimals using dictionary comprehension.

📋 What You'll Learn

Create a dictionary called products with these exact entries: 'apple': 0.4, 'banana': 0.25, 'cherry': 0.15

Create a variable called formatted_prices using dictionary comprehension to format each price as a string with a dollar sign and two decimal places

Print the formatted_prices dictionary

💡 Why This Matters

🌍 Real World

Formatting prices neatly is important for receipts, price tags, and online stores to make prices clear and professional.

💼 Career

Many jobs in retail, web development, and data processing require formatting and displaying structured data clearly.

1

Create the products dictionary

Create a dictionary called products with these exact entries: 'apple': 0.4, 'banana': 0.25, 'cherry': 0.15

Python

# Create the products dictionary with exact entries
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys and values separated by colons.

2

Prepare for formatting

Create a variable called formatted_prices to hold the formatted prices. Initialize it using dictionary comprehension that will format prices as strings with a dollar sign and two decimals.

Python

products = {'apple': 0.4, 'banana': 0.25, 'cherry': 0.15}
# Create formatted_prices dictionary using dictionary comprehension
# Your code here

Need a hint?

Use f"${price:.2f}" inside the comprehension to format the price with two decimals and a dollar sign.

3

Format the prices using dictionary comprehension

Use dictionary comprehension with for product, price in products.items() to create formatted_prices where each price is formatted as a string with a dollar sign and two decimal places using f"${price:.2f}".

Python

products = {'apple': 0.4, 'banana': 0.25, 'cherry': 0.15}
formatted_prices = {product: f"${price:.2f}" for product, price in products.items()}
# Your code here

Need a hint?

Dictionary comprehension creates a new dictionary by looping over products.items() and formatting each price.

4

Print the formatted prices

Write print(formatted_prices) to display the dictionary with formatted prices.

Python

products = {'apple': 0.4, 'banana': 0.25, 'cherry': 0.15}
formatted_prices = {product: f"${price:.2f}" for product, price in products.items()}
# Print the formatted_prices dictionary
# Your code here

Need a hint?

Use the print() function to show the final dictionary.