Course类返回空

没看懂，这是我写的代码

class Student(object):

    def __init__(self, student_id, student_name):
        self.student_id = student_id
        self.student_name = student_name
        self.course = []

    def __str__(self):
        return "name：{}，s_number：{}".format(self.student_name, self.student_id)

    def course_detail(self):
        return "name：{}，selected：{}".format(self.student_name, self.course)

    def add_course(self, cour_info):
        self.course.append(cour_info)
        return "name：{}，selected：{}".format(self.student_name, self.course)


class Teacher(object):

    def __init__(self, teacher_id, teacher_name, phone_number):
        self.teacher_id = teacher_id
        self.teacher_name = teacher_name
        self.phone_number = phone_number

    def __str__(self):
        return "teacher_id：{}，name：{}".format(self.teacher_id, self.teacher_name)


class Course(object):

    def __init__(self, course_id, course_name, teacher=None):
        self.course_id = course_id
        self.course_name = course_name
        self.teacher = teacher

    def binding(self,teacher):
        result = {}
        if teacher:
            self.teacher = teacher
            result.update({
                "课程名称": self.course_name, "教师名称": self.teacher
            })
            return result
        else:
            return

from example import Student, Teacher, Course


def introduction(str):
    print("****************************{}*********************************".format(str))


# 课程信息初始化
def prepare_course():
    course_dict = {
        "01": "网络爬虫", "02": "数据分析",
        "03": "人工智能", "04": "机器学习",
        "05": "云计算", "06": "大数据",
        "07": "图像识别", "08": "Web开发"
    }
    course_list = []
    for key, value in course_dict.items():
        course=Course(course_id=key, course_name=value)
        course_list.append(course)
    return course_list


# 教师信息初始化
def create_teacher():
    teacher1 = Teacher(teacher_id="T1", teacher_name="张亮", phone_number="13301122001")
    teacher2 = Teacher(teacher_id="T2", teacher_name="王朋", phone_number="13301122002")
    teacher3 = Teacher(teacher_id="T3", teacher_name="李旭", phone_number="13301122003")
    teacher4 = Teacher(teacher_id="T4", teacher_name="黄国发", phone_number="13301122004")
    teacher5 = Teacher(teacher_id="T5", teacher_name="周勤", phone_number="13301122005")
    teacher6 = Teacher(teacher_id="T6", teacher_name="谢富顺", phone_number="13301122006")
    teacher7 = Teacher(teacher_id="T7", teacher_name="贾教师", phone_number="13301122007")
    teacher8 = Teacher(teacher_id="T8", teacher_name="杨教师", phone_number="13301122008")
    teacher_list = [teacher8, teacher7, teacher6, teacher5, teacher4, teacher3, teacher2, teacher1]
    return teacher_list


def course_to_teacher():
    list_a = []
    is_course = prepare_course()
    is_teacher = create_teacher()
    for i in range(len(is_course)):
        course=Course(course_id=is_course[0], course_name=is_course[1],teacher=is_teacher[len(is_course)-1-i])
        course_teacher_binding =course.binding(is_teacher[len(is_course)-1-i])
        list_a.append(course_teacher_binding)
    return list_a


# 学生信息初始化
def create_student():
    student_info = []
    ls_student = ["小亮", "小明", "李红", "小丽", "Jone", "小彤", "小K", "慕慕"]
    for i in range(len(ls_student)):
        student_info.append(Student(student_id=1000+i,student_name=ls_student[len(ls_student)-1-i]))
    return student_info

同学，你好！1、is_course 列表中的元素是课程对象，在实例化课程时应传入课程名字，即课程类的course_name属性

而不是课程对象，即is_course[1]改为is_course[1].course_name

2、课程类中的binding方法传入的teacher参数是teacher对象，要想输出教师名字，要调用teacher类的teacher_name属性。如下图：

祝学习愉快~