class Person: def __init__(self, last_name, first_name, gender, birthday): self.last_name = last_name self.first_name = first_name self.gender = gender self.birthday = birthday class Student(Person): def __init__(self, last_name, first_name, gender, birthday, student_id, major): super().__init__(last_name, first_name, gender, birthday) self.student_id = student_id self.major = major self.selected_courses = {} def select_course(self, course): self.selected_courses = course def modify_course(self, course_id): del self.selected_courses[course_id] def f2(): print('''If you want to get the information of selected courses, choose number 1. If you want to modify selected courses, choose number 2.''') choice1 = input('Please make your choice:') student_id = input('Please input your student_id:') student = basic_class.Student('', '', '', '', student_id, '') if choice1 == '1': course_id1 = input('Please input the course_id you want to query:') basic_class.Student.get_information(student, course_id1) if choice1 == '2': choice11 = input('Choose your following operation(1.add;2.delete):') course_id2 = input('Please input the course_id you want to query:') if choice11 == '1': basic_class.Student.select_course(student, course_id2) if choice11 == '2': basic_class.Student.modify_course(student, course_id2) 找出这段代码的错误并修正

代码中存在以下错误：

1. 在调用方法时，应该使用对象调用方法，而不是类名调用方法。
2. 在子类 `Student` 中，没有定义 `get_information` 方法。
3. 在调用 `modify_course` 方法时，应该传递课程编号 `course_id2`，而不是学生对象 `student`。

以下是修正后的代码：

class Person:
    def __init__(self, last_name, first_name, gender, birthday):
        self.last_name = last_name
        self.first_name = first_name
        self.gender = gender
        self.birthday = birthday

class Student(Person):
    def __init__(self, last_name, first_name, gender, birthday, student_id, major):
        super().__init__(last_name, first_name, gender, birthday)
        self.student_id = student_id
        self.major = major
        self.selected_courses = {}

    def select_course(self, course):
        self.selected_courses[course.course_id] = course

    def modify_course(self, course_id):
        del self.selected_courses[course_id]

    def get_information(self, course_id):
        if course_id in self.selected_courses:
            print(f"Course ID:{course_id}, Course Name:{self.selected_courses[course_id].name}, Course Credit:{self.selected_courses[course_id].credit}")
        else:
            print("The selected course does not exist.")

class Course:
    def __init__(self, course_id, name, credit):
        self.course_id = course_id
        self.name = name
        self.credit = credit

def f2():
    print('''If you want to get the information of selected courses, choose number 1. If you want to modify selected courses, choose number 2.''')
    choice1 = input('Please make your choice:')
    student_id = input('Please input your student_id:')
    student = Student('', '', '', '', student_id, '')
    if choice1 == '1':
        course_id1 = input('Please input the course_id you want to query:')
        student.get_information(course_id1)
    if choice1 == '2':
        choice11 = input('Choose your following operation(1.add;2.delete):')
        course_id2 = input('Please input the course_id you want to query:')
        if choice11 == '1':
            course_name = input('Please input the course name:')
            course_credit = input('Please input the course credit:')
            course = Course(course_id2, course_name, course_credit)
            student.select_course(course)
        if choice11 == '2':
            student.modify_course(course_id2)