SE Computer Engineering Practical 16 solution

SE Computer Engineering Practical 16 solution

Question:

Write a Python program for department library which has N books, write functions for following:
a) Delete the duplicate entries
b) Display books in ascending order based on cost of books
c) Count number of books with cost more than 500.
d) Copy books in a new list which has cost less than 500.

Code:

def delete_duplicates(books):
   unique_books = list(set(books))
   return unique_books


def display_books_in_ascending_order(books):
   sorted_books = sorted(books, key=lambda x: x[2])
   return sorted_books


def count_books_more_than_500(books):
   count = sum(1 for book in books if book[2] > 500)
   return count


def copy_books_cost_less_than_500(books):
   less_than_500 = [book for book in books if book[2] < 500]
   return less_than_500


if __name__ == "__main__":
   N = int(input("Enter the number of books: "))
   books = []

   for i in range(N):
       print(f"\nEnter details for book {i+1}:")
       name = input("Enter the book name: ")
       author = input("Enter the author name: ")
       cost = float(input("Enter the cost of the book: "))

       books.append((name, author, cost))

   # a) Delete duplicate entries
   books = delete_duplicates(books)
   print("\nAfter removing duplicate entries:")
   for book in books:
       print(book)

   # b) Display books in ascending order based on cost
   sorted_books = display_books_in_ascending_order(books)
   print("\nBooks in ascending order based on cost:")
   for book in sorted_books:
       print(book)

   # c) Count number of books with cost more than 500
   count_more_than_500 = count_books_more_than_500(books)
   print("\nNumber of books with cost more than 500:", count_more_than_500)

   # d) Copy books with cost less than 500 to a new list
   less_than_500_books = copy_books_cost_less_than_500(books)
   print("\nBooks with cost less than 500:")
   for book in less_than_500_books:
       print(book)

Output:

Enter the number of books: 7

Enter details for book 1:
Enter the book name: “Queen of Fire”	
Enter the author name: Devika Rangachari
Enter the cost of the book: 450

Enter details for book 2:
Enter the book name: ‘The India Story’	
Enter the author name: Bimal Jalal
Enter the cost of the book: 500

Enter details for book 3:
Enter the book name: ‘A Place Called Home’	
Enter the author name: Preeti Shenoy
Enter the cost of the book: 750

Enter details for book 4:
Enter the book name: Lal Salam	
Enter the author name: Smriti Irani
Enter the cost of the book: 800

Enter details for book 5:
Enter the book name: ‘Hear Yourself’	
Enter the author name: Indian Author Prem Rawat
Enter the cost of the book: 300

Enter details for book 6:
Enter the book name: ‘The Queen of Indian Pop’	
Enter the author name: Usha Uthup
Enter the cost of the book: 550

Enter details for book 7:
Enter the book name: ‘Golden Boy Neeraj Chopra’	
Enter the author name: Navdeep Singh Gill
Enter the cost of the book: 750

After removing duplicate entries:
('‘A Place Called Home’\t', 'Preeti Shenoy', 750.0)
('“Queen of Fire”\t', 'Devika Rangachari', 450.0)
('‘Hear Yourself’\t', 'Indian Author Prem Rawat', 300.0)
('‘The Queen of Indian Pop’\t', 'Usha Uthup', 550.0)
('Lal Salam\t', 'Smriti Irani', 800.0)
('‘The India Story’\t', 'Bimal Jalal', 500.0)
('‘Golden Boy Neeraj Chopra’\t', 'Navdeep Singh Gill', 750.0)

Books in ascending order based on cost:
('‘Hear Yourself’\t', 'Indian Author Prem Rawat', 300.0)
('“Queen of Fire”\t', 'Devika Rangachari', 450.0)
('‘The India Story’\t', 'Bimal Jalal', 500.0)
('‘The Queen of Indian Pop’\t', 'Usha Uthup', 550.0)
('‘A Place Called Home’\t', 'Preeti Shenoy', 750.0)
('‘Golden Boy Neeraj Chopra’\t', 'Navdeep Singh Gill', 750.0)
('Lal Salam\t', 'Smriti Irani', 800.0)

Number of books with cost more than 500: 4

Books with cost less than 500:
('“Queen of Fire”\t', 'Devika Rangachari', 450.0)
('‘Hear Yourself’\t', 'Indian Author Prem Rawat', 300.0)

Process finished with exit code 0