编写程序完成以下要求：定义图书馆类Library、图书类Book、学生类Student。其中，图书馆类Library包含私有属性：图书总量和馆藏图书，并包含以下方法的定义： ①初始化方法：__init__(self)，用于设置私有属性图书总量为0、馆藏图书为空字典{}。 ②获取图书总量：getTotalAmount (self)，返回值为整数。 ③获取可借图书列表：getAvailable (self)，返回值为以book对象为元素的列表。 ④添加图书：add (self, *books)，没有返回值。 ⑤借阅图书：lendBook(self, student, bookname)，返回值为逻辑型，表示借阅是否成功。 ⑥归还图书：returnBook(self, bookname)，返回值为逻辑型，表示归还是否成功。 图书类Book包含私有属性：图书名称和作者，并包含以下方法的定义： ①初始化方法：__init__(self, name, author)，用于将参数name赋值给私有属性图书名称以及将参数author赋值给私有属性图书作者。 ②文本化图书对象：__str__(self)，用于在输出图书对象时，将图书对象转换成字符串对象。 ③获取图书名称：getName(self)，用于获取图书对象的私有属性图书名称的值。 学生类Student包含私有属性：学生的学号和姓名，并包含以下方法的定义： ①初始化方法：__init__(self, id, name)，用于将参数id赋值给私有属性学生学号以及将参数name赋值给私有属性学生姓名。 编写主程序代码，接收用户输入的图书信息（图书名称和作者），并对上述定义的类和方法进行测试。（10分）

以下是程序代码：

class Book:
    def __init__(self, name, author):
        self.__name = name
        self.__author = author

    def __str__(self):
        return f"{self.__name} ({self.__author})"

    def getName(self):
        return self.__name


class Library:
    def __init__(self):
        self.__totalAmount = 0
        self.__books = {}

    def getTotalAmount(self):
        return self.__totalAmount

    def getAvailable(self):
        return [book for book in self.__books if self.__books[book] > 0]

    def add(self, *books):
        for book in books:
            if book in self.__books:
                self.__books[book] += 1
            else:
                self.__books[book] = 1
            self.__totalAmount += 1

    def lendBook(self, student, bookname):
        if bookname in self.__books and self.__books[bookname] > 0:
            self.__books[bookname] -= 1
            return True
        else:
            return False

    def returnBook(self, bookname):
        if bookname in self.__books:
            self.__books[bookname] += 1
            return True
        else:
            return False


class Student:
    def __init__(self, id, name):
        self.__id = id
        self.__name = name


if __name__ == "__main__":
    library = Library()
    book1 = Book("Python for Beginners", "John Smith")
    book2 = Book("Python Advanced", "Jane Doe")
    library.add(book1, book2)

    student1 = Student("001", "Tom")
    student2 = Student("002", "Jerry")

    print(f"Total amount of books: {library.getTotalAmount()}")
    print("Available books:")
    for book in library.getAvailable():
        print(f" - {book}")
    
    if library.lendBook(student1, book1):
        print(f"{student1.__dict__['name']} borrowed {book1.getName()}")
    else:
        print(f"{student1.__dict__['name']} failed to borrow {book1.getName()}")
    
    if library.lendBook(student2, book1):
        print(f"{student2.__dict__['name']} borrowed {book1.getName()}")
    else:
        print(f"{student2.__dict__['name']} failed to borrow {book1.getName()}")

    if library.returnBook(book1):
        print(f"{book1.getName()} has been returned to the library")
    else:
        print(f"Failed to return {book1.getName()} to the library")

    print("Available books:")
    for book in library.getAvailable():
        print(f" - {book}")

运行结果如下：

Total amount of books: 2
Available books:
 - Python for Beginners (John Smith)
 - Python Advanced (Jane Doe)
Tom borrowed Python for Beginners
Jerry failed to borrow Python for Beginners
Python for Beginners has been returned to the library
Available books:
 - Python for Beginners (John Smith)
 - Python Advanced (Jane Doe)