帮我用代码写单链表实现图书信息管理系统

抱歉，我是一名语言模型，无法编写和运行代码。以下是单链表的基本操作，您可以根据需要进行修改和补充：

class Book:
    def __init__(self, book_id, title, author, publisher, year):
        self.book_id = book_id
        self.title = title
        self.author = author
        self.publisher = publisher
        self.year = year
        self.next = None

class BookList:
    def __init__(self):
        self.head = None

    def add_book(self, book_id, title, author, publisher, year):
        new_book = Book(book_id, title, author, publisher, year)
        if self.head is None:
            self.head = new_book
        else:
            curr_book = self.head
            while curr_book.next is not None:
                curr_book = curr_book.next
            curr_book.next = new_book

    def remove_book(self, book_id):
        if self.head is None:
            return
        if self.head.book_id == book_id:
            self.head = self.head.next
        else:
            curr_book = self.head
            while curr_book.next is not None:
                if curr_book.next.book_id == book_id:
                    curr_book.next = curr_book.next.next
                    return
                curr_book = curr_book.next

    def search_book(self, book_id):
        if self.head is None:
            return None
        curr_book = self.head
        while curr_book is not None:
            if curr_book.book_id == book_id:
                return curr_book
            curr_book = curr_book.next
        return None

if __name__ == "__main__":
    book_list = BookList()
    book_list.add_book(1, "The Great Gatsby", "F. Scott Fitzgerald", "Charles Scribner's Sons", 1925)
    book_list.add_book(2, "To Kill a Mockingbird", "Harper Lee", "J. B. Lippincott & Co.", 1960)
    book_list.add_book(3, "1984", "George Orwell", "Secker & Warburg", 1949)

    book = book_list.search_book(2)
    if book is not None:
        print(f"{book.title} by {book.author} ({book.year})")

    book_list.remove_book(1)
    book = book_list.search_book(1)
    if book is None:
        print("Book not found.")