Safe access using get() in Python - Mini Project: Build & Apply

Safe Access Using get()

📖 Scenario: You are managing a small library system. You have a dictionary that stores the number of copies available for each book title.

🎯 Goal: You will learn how to safely access dictionary values using the get() method to avoid errors when a book is not found.

📋 What You'll Learn

Create a dictionary with book titles and their available copies

Create a variable for the book title to search

Use the get() method to safely access the number of copies

Print the number of copies or a message if the book is not available

💡 Why This Matters

🌍 Real World

In real libraries or stores, you often check if an item is available without causing errors if it is missing.

💼 Career

Knowing how to safely access data in dictionaries is important for data handling and avoiding program crashes.

1

Create the books dictionary

Create a dictionary called books with these exact entries: 'Python Basics': 4, 'Data Science 101': 2, 'Machine Learning': 5

Python

# Create the books dictionary with the given titles and copies
# Your code here

Need a hint?

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

2

Set the book title to search

Create a variable called search_title and set it to the string 'Deep Learning'

Python

books = {'Python Basics': 4, 'Data Science 101': 2, 'Machine Learning': 5}
# Create the search_title variable with the value 'Deep Learning'
# Your code here

Need a hint?

Use an equals sign = to assign the string to the variable.

3

Use get() to safely access copies

Create a variable called copies and set it to the result of books.get(search_title, 0) to get the number of copies or 0 if the book is not found

Python

books = {'Python Basics': 4, 'Data Science 101': 2, 'Machine Learning': 5}
search_title = 'Deep Learning'
# Use get() to get copies or 0 if not found
# Your code here

Need a hint?

The get() method takes the key and a default value if the key is missing.

4

Print the result

Write a print statement that outputs: Copies available for {search_title}: {copies} using an f-string

Python

books = {'Python Basics': 4, 'Data Science 101': 2, 'Machine Learning': 5}
search_title = 'Deep Learning'
copies = books.get(search_title, 0)
# Print the number of copies available using an f-string
# Your code here

Need a hint?

Use print(f"Copies available for {search_title}: {copies}") to show the result.