Quiz Review

Background

The quiz will be based on the topics covered in weeks 11 through 14. There are 2 programming problems to help you prepare for Quiz 4. You are allowed to use the Thonny IDE. You may also use the guides provided on the course web page: https://cmsc105-f24.github.io/guides

Practice Problem 1

You are tasked with creating a Python program to process a data file. The file, named sales_data.txt, contains information about daily sales in the following format:

sales_data.txt

2024-01-01,100.50
2024-01-02,200.75
2024-01-03,150.00
2024-01-04,175.25
2024-01-05,300.00

Each line contains a date and a sales amount separated by a comma.

The sales_data.txt file can be downloaded using this link: sales_data.txt

Remember to save the file in the same folder as your program.

Write a program to:

• Read the contents of the sales_data.txt file.
• Calculate and print the total sales.
• Calculate and print the average sales amount.
• Find and print the date with the highest sales.
• Save a new file called summary_sales.txt with the following information:
  • Total sales.
  • Average sales amount.
  • Date with the highest sales.

Sample output:

Total Sales: $926.50
Average Sales: $185.30
Highest Sales: $300.00 on 2024-01-05

The contents of summary_sales.txt should be:

summary_sales.txt

Total Sales: $926.50
Average Sales: $185.30
Highest Sales: $300.00 on 2024-01-05

Practice Problem 2 (50 points)

Create a Book class with the following private data fields: title, author, isbn, price, num_pages, and the following methods:

• A constructor (__init__) with the arguments title, author, isbn, price, num_pages. Please note that all fields except price and num_pages are strings. The price is of type float, and num_pages is of type int.
• Get and set methods for the price field only.
• printDetails() method that prints the title, author, isbn, price, and num_pages.
• isAffordable() method that returns True if the price is less than $20, and False otherwise.

Draw the UML diagram for the Book class.

Write test code that prompts the user to enter the title, author, isbn, price, and num_pages. Initiate an object of the Book class, print the details, and display whether the book is affordable.

Sample run:

Enter book title: Python Programming
Enter author: John Doe
Enter ISBN: 978-1234567890
Enter price: 19.99
Enter number of pages: 350

Book Details:

Title: Python Programming
Author: John Doe
ISBN: 978-1234567890
Price: $19.99
Number of Pages: 350

Is this book affordable? Yes