bean

from abc import ABC, abstractmethod

class LibraryItem(ABC): def init(self, title, author, publication_date, available=True): self._title = title self._author = author self._publication_date = publication_date self._available = available

@property
def title(self):
    return self._title

@property
def author(self):
    return self._author

@property
def publication_date(self):
    return self._publication_date

@property
def available(self):
    return self._available

@abstractmethod
def checkout(self):
    pass

@abstractmethod
def return_item(self):
    pass

class Book(LibraryItem): def init(self, title, author, publication_date, genre, available=True): super().init(title, author, publication_date, available) self._genre = genre

@property
def genre(self):
    return self._genre

def checkout(self):
    if self._available:
        self._available = False
        print(f"The book '{self.title}' has been checked out.")
    else:
        print(f"The book '{self.title}' is not available.")

def return_item(self):
    if not self._available:
        self._available = True
        print(f"The book '{self.title}' has been returned.")
    else:
        print(f"The book '{self.title}' was not checked out.")

class DVD(LibraryItem): def init(self, title, author, publication_date, runtime, available=True): super().init(title, author, publication_date, available) self._runtime = runtime

@property
def runtime(self):
    return self._runtime

def checkout(self):
    if self._available:
        self._available = False
        print(f"The DVD '{self.title}' has been checked out.")
    else:
        print(f"The DVD '{self.title}' is not available.")

def return_item(self):
    if not self._available:
        self._available = True
        print(f"The DVD '{self.title}' has been returned.")
    else:
        print(f"The DVD '{self.title}' was not checked out.")

class LibraryCatalog: def init(self): self._items = []

def add_item(self, item):
    self._items.append(item)

def find_item(self, search_term):
    results = [
        item for item in self._items
        if search_term.lower() in item.title.lower() or search_term.lower() in item.author.lower()
    ]
    if results:
        for item in results:
            status = "Available" if item.available else "Checked out"
            print(f"Title: {item.title}, Author: {item.author}, Status: {status}")
    else:
        print("No items found.")

def display_catalog(self):
    for item in self._items:
        status = "Available" if item.available else "Checked out"
        print(f"Title: {item.title}, Author: {item.author}, Status: {status}")

Main program

catalog = LibraryCatalog()

Adding items

book1 = Book("The Great Gatsby", "F. Scott Fitzgerald", "1925", "Fiction") book2 = Book("1984", "George Orwell", "1949", "Dystopian") dvd1 = DVD("Inception", "Christopher Nolan", "2010", "148 minutes")

catalog.add_item(book1) catalog.add_item(book2) catalog.add_item(dvd1)

User interactions

catalog.display_catalog() print("\nSearching for '1984':") catalog.find_item("1984") print("\nChecking out '1984':") book2.checkout() print("\nReturning '1984':") book2.return_item() print("\nCatalog after updates:") catalog.display_catalog()