Book-project

This project uses OOP

Define the Book class

class Book: def init(self, title, author, isbn=None, ariel=None): self.title = title self.author = author self.isbn = isbn self.ariel = ariel self.borrowed = False

def check_out(self):
    if not self.borrowed:
        self.borrowed = True
        return True
    return False

def return_book(self):
    self.borrowed = False

def __str__(self):
    id_string = ""
    if self.isbn:
        id_string += f"ISBN: {self.isbn}"
    if self.ariel:
        if id_string: 
            id_string += ", "
        id_string += f"Ariel: {self.ariel}"
    if not id_string:
        id_string = "No identifier"
        
    return f"{self.title} by {self.author}. Identifiers: {id_string}"

Define the Patron class

class Patron: def init(self, name): self.name = name self.borrowed_books = []

def borrow_book(self, book):
    if book.check_out():
        self.borrowed_books.append(book)
        print(f"{self.name} has borrowed {book.title}")
    else:
        print(f"{book.title} is currently not available.")

def return_book(self, book):
    if book in self.borrowed_books:
        book.return_book()
        self.borrowed_books.remove(book)
        print(f"{self.name} has returned {book.title}")
    else:
        print(f"{self.name} does not have {book.title}.")

def list_borrowed_books(self):
    for book in self.borrowed_books:
        print(book)

def __str__(self):
    return f"Patron: {self.name}, Books Borrowed: {len(self.borrowed_books)}"

Define the Library class

class Library: def init(self): self.books = [] self.patrons = []

def add_book(self, book):
    self.books.append(book)

def add_patron(self, patron):
    self.patrons.append(patron)

def find_book(self, title):
    for book in self.books:
        if book.title == title:
            return book
    return None

def find_patron(self, name):
    for patron in self.patrons:
        if patron.name == name:
            return patron
    return None

def __str__(self):
    return f"Library has {len(self.books)} books and {len(self.patrons)} patrons."

Example usage

def main(): # Create a library instance my_library = Library()

# Create some books
book1 = Book("The Great Gatsby", "F. Scott Fitzgerald", "123456789")
book2 = Book("1984", "George Orwell", "987654321")
book3 = Book("Cricket In Times Square", "George Seldon", ariel="AR0001")

# Add books to the library
my_library.add_book(book1)
my_library.add_book(book2)
my_library.add_book(book3)

# Create a patron
john_doe = Patron("John Doe")

# Add patron to the library
my_library.add_patron(john_doe)

# Patron borrows a book
john_doe.borrow_book(book1)
john_doe.borrow_book(book3)

# List borrowed books
john_doe.list_borrowed_books()

# Patron returns a book
john_doe.return_book(book1)

# Print the library status
print(my_library)

if name == "main": main()