2.3_zad.py

class Book:
    def __init__(self, book_id, title, author, genre, year, copies):
        self.book_id = book_id
        self.title = title
        self.author = author
        self.genre = genre
        self.year = year
        self.copies = copies

    def display_info(self):
        print(f"Book ID: {self.book_id}")
        print(f"Title: {self.title}")
        print(f"Author: {self.author}")
        print(f"Genre: {self.genre}")
        print(f"Year: {self.year}")


def add_books(books_list, book):
    books_list.append(book)

def sort_by_oldest_year(books_list):
    sorted_books = sorted(books_list, key=lambda book: book.year, reverse = True)
    for book in sorted_books:
        book.display_info()

def serach_by_author_title(books_list, author, title):
    found = False

    for book in books_list:
        if book.author == author and book.title == title:
            found = True
            book.display_info()
            break

        if not found:
            print("Book not found!!!")

def filter_by_genre(books_list, genre):
    for book in books_list:
        if book.genre == genre:
            book.display_info()

def check_copies(books_list, author, title):
    for book in books_list:
        if book.author == author and book.title == title:
            if book.copies > 0:
                print(f"{book.copies} left.")
            else:
                print("No copies left.")

books_list = []

books = int(input())

for _ in range(books):
    book_id = int(input())
    title = input()
    author = input()
    genre = input()
    year = int(input())
    copies = int(input())

book = Book(book_id, title, author, genre, year, copies)
books_list.append(book)

while True:

    print("1. Добавяне на книга")
    print("2. Сортиране по година")
    print("3. Търсене на книга по заглавие и автор")
    print("4. Филтриране по жанр")
    print("5. Проверка на копия")
    print("6. Изход")

    choice = int(input())

    match choice:
        case 1:
            book_id = int(input())
            title = input()
            author = input()
            genre = input()
            year = int(input())
            copies = int(input())

            book_to_add = Book(book_id, title, author, genre, year, copies)
            books_list.append(book_to_add)
            print(books_list)

        case 2:
            sort_by_oldest_year(books_list)
        case 3:
            author = input()
            title = input()
            serach_by_author_title(books_list, author, title)
        case 4:
            genre = input()
            filter_by_genre(books_list, genre)
        case 5:
            author = input()
            title = input()
            check_copies(books_list, author, title)
        case 6:
            break
        case _:
            print("Wrong option!")