Naming rules and conventions in Python - Mini Project: Build & Apply

Naming rules and conventions

📖 Scenario: You are helping a friend organize their small library of books using Python. To keep things clear and easy to understand, you will use proper naming rules and conventions for variables.

🎯 Goal: Create variables with correct names following Python naming rules and conventions, then print them to see the results.

📋 What You'll Learn

Create variables with valid Python names

Use lowercase letters and underscores for variable names

Avoid starting variable names with numbers or special characters

Print the variables to show their values

💡 Why This Matters

🌍 Real World

Using clear and correct variable names helps programmers and others understand code easily, just like labeling books in a library.

💼 Career

Good naming conventions are essential for writing clean, maintainable code in any programming job.

1

Create variables with valid names

Create three variables with these exact names and values: book_title with value "Python Basics", author_name with value "Anna Smith", and year_published with value 2023.

Python

# Create variables book_title, author_name, and year_published with given values
# Your code here

Need a hint?

Use only letters, numbers, and underscores. Variable names cannot start with a number.

2

Add a variable with a valid name for book price

Create a variable called book_price and set it to the value 29.99.

Python

book_title = "Python Basics"
author_name = "Anna Smith"
year_published = 2023
# Create variable book_price with value 29.99
# Your code here

Need a hint?

Remember to use lowercase letters and underscores for variable names.

3

Use a for loop with a proper variable name

Use a for loop with the variable info to iterate over the list [book_title, author_name, year_published, book_price] and print each info item.

Python

book_title = "Python Basics"
author_name = "Anna Smith"
year_published = 2023
book_price = 29.99
# Use for loop with variable info to print each item in the list
# Your code here

Need a hint?

Use the variable name info exactly in the for loop.

4

Print a summary using f-string with proper variable names

Print a summary sentence using an f-string: "The book 'Python Basics' by Anna Smith was published in 2023 and costs $29.99." Use the variables book_title, author_name, year_published, and book_price inside the f-string.

Python

book_title = "Python Basics"
author_name = "Anna Smith"
year_published = 2023
book_price = 29.99
for info in [book_title, author_name, year_published, book_price]:
    print(info)
# Print the summary sentence using an f-string
# Your code here

Need a hint?

Use print(f"...") with the variable names inside curly braces.