编写借阅和归还图书代码

当然，以下是一个简单的Python图书管理系统示例，包含借阅和归还图书的代码：

class Book:
    def __init__(self, id, title, author, is_available=True):
        self.id = id
        self.title = title
        self.author = author
        self.is_available = is_available

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

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

    def search_book_by_id(self, id):
        for book in self.books:
            if book.id == id:
                return book
        return None

class Member:
    def __init__(self, name):
        self.name = name
        self.borrowed_books = []

    def borrow_book(self, book):
        if book.is_available:
            book.is_available = False
            self.borrowed_books.append(book)
            print("Book with ID", book.id, "has been borrowed by", self.name)
        else:
            print("Book with ID", book.id, "is not available for borrowing")

    def return_book(self, book):
        if book in self.borrowed_books:
            book.is_available = True
            self.borrowed_books.remove(book)
            print("Book with ID", book.id, "has been returned by", self.name)
        else:
            print("Book with ID", book.id, "is not borrowed by", self.name)


# 创建图书馆和图书
library = Library()
book1 = Book(1, "Python for Beginners", "John Smith")
book2 = Book(2, "Advanced Python Programming", "Jane Doe")
library.add_book(book1)
library.add_book(book2)

# 创建会员并借阅和归还图书
member1 = Member("Alice")
member1.borrow_book(book1)
member1.borrow_book(book2)
member1.return_book(book1)
member1.return_book(book2)

运行此代码将创建一个图书馆和两本书。创建一个名为“Alice”的会员，然后借阅两本书并将它们归还。