用python代码生成一个图书管理系统

好的，我可以给您提供一个基本的图书管理系统的Python代码，但是需要注意的是，这里提供的是一个简单的示例，实际应用中需要根据具体需求进行修改和完善。

class Book:
    def __init__(self, title, author, ISBN):
        self.title = title
        self.author = author
        self.ISBN = ISBN
        self.borrowed = False

class Library:
    books = []
    
    def add_book(self, book):
        self.books.append(book)
    
    def search_book(self, title):
        for book in self.books:
            if book.title == title:
                return book
        return None
    
    def borrow_book(self, title):
        book = self.search_book(title)
        if book is not None and not book.borrowed:
            book.borrowed = True
            print(f"{title} has been borrowed.")
            return True
        else:
            print(f"{title} is not available for borrowing.")
            return False
    
    def return_book(self, title):
        book = self.search_book(title)
        if book is not None and book.borrowed:
            book.borrowed = False
            print(f"{title} has been returned.")
        else:
            print(f"{title} is not a valid book to return.")

if __name__ == '__main__':
    library = Library()
    
    book1 = Book("The Hunger Games", "Suzanne Collins", "9780439023481")
    book2 = Book("To Kill a Mockingbird", "Harper Lee", "9780446310789")
    book3 = Book("1984", "George Orwell", "9780451524935")
    
    library.add_book(book1)
    library.add_book(book2)
    library.add_book(book3)
    
    print("Welcome to the library!")
    while True:
        print("What would you like to do?")
        print("1. Search for a book")
        print("2. Borrow a book")
        print("3. Return a book")
        print("4. Exit")
        choice = input("Enter your choice: ")
        
        if choice == "1":
            title = input("Enter the title of the book: ")
            book = library.search_book(title)
            if book is not None:
                print(f"{book.title} by {book.author} with ISBN {book.ISBN}")
            else:
                print(f"{title} is not available in the library.")
        elif choice == "2":
            title = input("Enter the title of the book: ")
            library.borrow_book(title)
        elif choice == "3":
            title = input("Enter the title of the book: ")
            library.return_book(title)
        elif choice == "4":
            print("Goodbye!")
            break
        else:
            print("Invalid choice. Try again.")

这个简单的代码实现了一个图书馆的基本功能，包括添加书籍、搜索书籍、借出书籍和归还书籍等功能。