Python图书管理系统大作业代码

由于没有提供具体要求，以下是一个简单的Python图书管理系统代码：

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

    def __str__(self):
        return f"{self.title} ({self.author}, {self.year})"


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

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

    def remove_book(self, book):
        if book in self.books:
            self.books.remove(book)
            print(f"{book} removed from library")
        else:
            print(f"{book} not found in library")

    def search_book(self, title):
        for book in self.books:
            if book.title == title:
                print(f"{book} found in library")
                return book
        print(f"{title} not found in library")
        return None

    def display_books(self):
        if self.books:
            print("Library Books:")
            for book in self.books:
                print(f"- {book}")
        else:
            print("No books in library")


library = Library()

while True:
    print("\nMenu:")
    print("1. Add book")
    print("2. Remove book")
    print("3. Search book")
    print("4. Display books")
    print("0. Exit")

    choice = input("Enter your choice: ")

    if choice == "0":
        break
    elif choice == "1":
        title = input("Enter book title: ")
        author = input("Enter book author: ")
        year = input("Enter book year: ")
        book = Book(title, author, year)
        library.add_book(book)
        print(f"{book} added to library")
    elif choice == "2":
        title = input("Enter book title: ")
        book = library.search_book(title)
        if book:
            library.remove_book(book)
    elif choice == "3":
        title = input("Enter book title: ")
        library.search_book(title)
    elif choice == "4":
        library.display_books()
    else:
        print("Invalid choice")

这个代码实现了一个简单的图书管理系统，其中包括添加书籍、删除书籍、查找书籍和显示所有书籍等功能。用户可以通过命令行菜单选择需要执行的操作。