反射的应用

class Teacher:OPERATE_DIC = [('创建课程', 'create_course'),('创造学生', 'create_student'),('创建课程', 'create_course'),('查看学生信息', 'check_student_info'),]def __init__(self, name):self.name = namedef create_course(self):print('创建课程')def create_student(self):print('创建学生')def check_student_info(self):print('查看学生信息')def check_all_student(self):print('查看所有学生')class Student:OPERATE_DIC = [('查看所有课程', 'check_course'),('选择课程', 'choose_course'),('查看已选择的课程', 'choosed_course')]def __init__(self, name):self.name = namedef check_course(self):print('查看课程')def choose_course(self):print('选择课程')def choosed_course(self):print('查看已选课程')def longin():username = input('输入账号：')password = input('输入密码：')with open('userinfo.txt', 'r', encoding='utf-8') as f:for line in f:user, pwd, ident = line.split()if user == username and pwd == password:print('登录成功！')return username, identimport sysdef main():usr, id = longin()print('user,id:', usr, id)file = sys.modules['__main__']cls = getattr(file, id)print(cls)obj = cls(usr)operate_dic = cls.OPERATE_DICwhile 1:for num, i in enumerate(operate_dic, 1):print(num, i[0])choice = int(input('num>>>'))choice_item = operate_dic[choice - 1]getattr(obj, choice_item[1])()main()