制作一个登陆时输入账号以区分读者和管理员，并且管理员可以增加、修改、删除图书。读者能够查询、借阅、归还、显示个人借阅历史及所借图书状态的代码

好的，下面是一个简单的Python代码示例，实现登陆时输入账号以区分读者和管理员，并且管理员可以增加、修改、删除图书，读者能够查询、借阅、归还、显示个人借阅历史及所借图书状态的功能：

class Library:
    def __init__(self):
        self.books = []  # 书库列表
        self.users = []  # 用户列表
        self.borrowed_books = []  # 已借出的书列表

    def add_book(self, book):
        self.books.append(book)
        print(f"书籍 {book} 添加成功！")

    def remove_book(self, book):
        self.books.remove(book)
        print(f"书籍 {book} 删除成功！")

    def modify_book(self, book, new_book):
        index = self.books.index(book)
        self.books[index] = new_book
        print(f"书籍 {book} 修改为 {new_book} 成功！")

    def borrow_book(self, user, book):
        if book not in self.books:
            print(f"书籍 {book} 不存在！")
        elif book in self.borrowed_books:
            print(f"书籍 {book} 已被借出！")
        else:
            self.borrowed_books.append(book)
            user.borrowed_books.append(book)
            print(f"用户 {user.name} 借阅书籍 {book} 成功！")

    def return_book(self, user, book):
        if book not in self.borrowed_books:
            print(f"书籍 {book} 不在借阅列表中！")
        elif book not in user.borrowed_books:
            print(f"用户 {user.name} 没有借阅书籍 {book} ！")
        else:
            self.borrowed_books.remove(book)
            user.borrowed_books.remove(book)
            print(f"用户 {user.name} 归还书籍 {book} 成功！")

    def show_borrowed_books(self, user):
        print(f"用户 {user.name} 的借阅历史：")
        for book in user.borrowed_books:
            if book in self.borrowed_books:
                print(f"{book} 状态：借出")
            else:
                print(f"{book} 状态：可借")

    def login(self):
        account = input("请输入账号：")
        if account == "admin":
            self.admin_login()
        else:
            self.reader_login()

    def admin_login(self):
        print("管理员登陆成功！")
        while True:
            choice = input("请选择操作：1. 添加书籍 2. 删除书籍 3. 修改书籍 4. 退出\n")
            if choice == "1":
                book = input("请输入书籍名称：")
                self.add_book(book)
            elif choice == "2":
                book = input("请输入书籍名称：")
                self.remove_book(book)
            elif choice == "3":
                book = input("请输入原书籍名称：")
                new_book = input("请输入新书籍名称：")
                self.modify_book(book, new_book)
            elif choice == "4":
                print("管理员退出登陆！")
                break
            else:
                print("输入错误，请重新输入！")

    def reader_login(self):
        print("读者登陆成功！")
        username = input("请输入用户名：")
        user = User(username)
        self.users.append(user)
        while True:
            choice = input("请选择操作：1. 查询书籍 2. 借阅书籍 3. 归还书籍 4. 显示借阅历史 5. 退出\n")
            if choice == "1":
                book = input("请输入书籍名称：")
                if book in self.books:
                    print(f"书籍 {book} 存在！")
                else:
                    print(f"书籍 {book} 不存在！")
            elif choice == "2":
                book = input("请输入书籍名称：")
                self.borrow_book(user, book)
            elif choice == "3":
                book = input("请输入书籍名称：")
                self.return_book(user, book)
            elif choice == "4":
                self.show_borrowed_books(user)
            elif choice == "5":
                print("读者退出登陆！")
                break
            else:
                print("输入错误，请重新输入！")


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


if __name__ == "__main__":
    lib = Library()
    lib.add_book("Python编程从入门到入土")
    lib.add_book("Java编程从入门到精通")
    lib.add_book("C++编程从入门到放弃")
    lib.login()

运行代码后，输入账号即可进入不同的登陆界面，管理员可以进行增加、修改、删除图书的操作，读者可以进行查询、借阅、归还、显示个人借阅历史及所借图书状态的操作。