Python中反射的简单应用

● 共两个文件：userInfo，reflex.py

alex|123456|Manager
hezewei|666|Student
taibai|2222|Teachar

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2019/9/27 11:26
# @Author  : zejin
# @File    : reflex.py

# 关于反射

class Manager:
    OPERATE_DIC = [
        ("创建学生账号", "create_student"),
        ("创建课程", "create_course"),
        ("查看学生信息", "check_student")
    ]

    def __init__(self, name):
        self.name = name

    def create_student(self):
        print("创建学生账号")

    def create_course(self):
        print("创建课程")

    def check_student(self):
        print("查看学生信息")


class Teachar:
    OPERATE_DIC = [
        ("查看学生信息", "check_student"),
        ("给学生评分", "grage")
    ]

    def __init__(self, name):
        self.name = name

    def check_student(self):
        print("查看学生信息")

    def grage(self):
        print("给学生评分")


class Student:
    OPERATE_DIC = [
        ("查看课程", "check_course"),
        ("选择课程", "choose_course"),
        ("查看已选择的课程", "chooosed_course")
    ]

    def __init__(self, name):
        self.name = name

    def check_course(self):
        print("查看课程")

    def choose_course(self):
        print("选择课程")

    def chooosed_course(self):
        print("查看已选择的课程")


def login():
    username = input("user:")
    password = input("pwd:")
    with open('userInfo') as f:
        for line in f:
            user, pwd, ident = line.strip().split("|")
            if username == user and password == pwd:
                print("登录成功！")
                return username, ident
            else:
                return -1


import sys


def main():
    re = login()
    while re == -1:
        print("错误")
        re = login()
    user, id = re
    file = sys.modules["__main__"]  # 得到本页面
    cls = getattr(file, id)  # 得到本页面的某个类，例：class Manager
    obj = cls(user)  # 实例化此类的对象
    opeate_dic = cls.OPERATE_DIC  # 得到类中静态字段OPERATE_DIC
    while True:
        for num, i in enumerate(opeate_dic, 1):
            print(num, i[0])
        choice = int(input("\n请输入数字选择(输入-1结束)>>>"))
        if choice == -1:
            break
        choice_item = opeate_dic[choice - 1]
        getattr(obj, choice_item[1])()  # choice_item[1])为对象中方法名


main()