Python简易学生管理系统

# 学生类
class Student(object):
    # 存放学生信息
    student_info = {}
    # 学生初始化方法
    def __init__(self,id,name,addr,tel):
        self.id = id
        self.name = name
        self.addr = addr
        self.tel = tel
        # 将学生的信息添加到学生信息字典里
        self.student_info["学号"] = self.id
        self.student_info["姓名"] = self.name
        self.student_info["地址"] = self.addr
        self.student_info["电话"] = self.tel

import json
import student
# 管理系统类
class Manager(object):

    # 展示所有学生信息的方法
    def show_all_student(self):
        with open("students_info.json", mode="r", encoding="utf8") as f:
            content = json.loads(f.read())
            if content:
                print("所有的学生信息如下：")
                print("#######################################")
                for stu in content:
                    print(stu)
                print("#######################################")
            elif len(content) == 0:
                print("Sorry! 一个学生都没有！")

    # 添加学生的方法
    def add_student(self):
        print("~~~~~~~~~~~~~~~~~~~~将要开始添加学生信息~~~~~~~~~~~~~~~~~~~~~")
        id = input("请输入学号：")
        name = input("请输入姓名：")
        addr = input("请输入地址：")
        tel = input("请输入电话：")
        new_student = student.Student(id, name, addr, tel)
        with open("students_info.json", mode="r", encoding="utf8") as f1:
            content = json.loads(f1.read())

        new_content = list(content)
        new_content.append(new_student.student_info)
        json_content = json.dumps(new_content)

        with open("students_info.json",mode="w",encoding="utf8") as f2:
            f2.write(json_content)
        print("~~~~~~~~~~~~~~~~~~~~！！！添加完成！！！~~~~~~~~~~~~~~~~~~~~~")


    # 删除学生的方法
    def delete_student(self):
        print("~~~~~~~~~~~~~~~~~~~~将要开始添加学生信息~~~~~~~~~~~~~~~~~~~~~")
        id = input("请输入要删除的学生的学号：")
        with open("students_info.json",mode="r",encoding="utf8") as f:
            content = list(json.loads(f.read()))
            for item in content:
                if item["学号"] == id:
                    content.remove(item)
                    json_content = json.dumps(content)
                    with open("students_info.json", mode="w", encoding="utf8") as f2:
                        f2.write(json_content)
                    print("~~~~~~~~~~~~~~~~~~~~！！！删除成功！！！~~~~~~~~~~~~~~~~~~~~~")
                    return
            print("输入的学号不存在！！！")


    # 修改学生的方法
    def update_student(self):
        print("~~~~~~~~~~~~~~~~~~~~开始修改学生信息~~~~~~~~~~~~~~~~~~~~~")
        with open("students_info.json", mode="r", encoding="utf8") as f:
            text = list(json.loads(f.read()))

        delete_number = input("请输入要修改的学生学号：")
        for i in text:
            if i["学号"] == delete_number:
                new_addr = input("请输入修改后的地址：")
                new_tel = input("请输入修改后的电话：")
                i["地址"] = new_addr
                i["电话"] = new_tel
                json_text = json.dumps(text)
                with open("students_info.json", mode="w", encoding="utf8") as f2:
                    f2.write(json_text)
                print("~~~~~~~~~~~~~~~~~~~~修改成功~~~~~~~~~~~~~~~~~~~~~")
                return
        print("输入的学号不存在！！！！！！！！！！！！！")


    # 系统启动入口方法
    def system_start(self):
        while True:
            print("########### 欢迎来到学生管理系统 ############")
            print("################ 请登录系统 ################")
            user_name = input("请输入用户名: ")
            pass_word = input("  请输入密码: ")
            if user_name == "zyh" and pass_word == "123456":
                print("################ 登陆成功！################")
                break
            else:
                print("登录信息错误，请重新登录！")

        while True:
            print("################ 你已经进入学生管理系统 ################")
            print("###################### 请选择功能 ######################")
            print("1. 展示所有学生信息")
            print("2. 添加学生")
            print("3. 删除学生")
            print("4. 修改学生")
            print("5. 退出系统")
            print("#######################################################")

            while True:
                choice = int(input("请输入功能对应的序号（1/2/3/4/5/6）: "))
                if choice == 1:
                    # print("调用展示所有学生信息的方法")
                    self.show_all_student()

                    break
                elif choice == 2:
                    # print("调用添加学生的方法")
                    self.add_student()

                    break
                elif choice == 3:
                    # print("调用删除学生的方法")
                    self.delete_student()

                    break
                elif choice == 4:
                    # print("调用修改学生的方法")
                    self.update_student()

                    break
                elif choice == 5:
                    print("退出学生管理系统！！！！！！！！！！！")
                    return
                else:
                    print("输入信息不合法，请重新输入！")

import manager



if __name__ == '__main__':

    manager_sys = manager.Manager()
    manager_sys.system_start()

[
  {"学号": "0001", "姓名": "张三", "地址": "北京", "电话": "13244453359"},
  {"学号": "0002", "姓名": "张三2", "地址": "北京", "电话": "13244453359"},
  {"学号": "0003", "姓名": "张三3", "地址": "北京", "电话": "13244453359"},
  {"学号": "0004", "姓名": "张三4", "地址": "北京", "电话": "13244453359"}
]