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

userInfo

#!/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()

reflex.py