Python实现学生管理系统的完整代码(面向对象)

"""
Project: ClassStudent
Creator: 猫猫
Create time: 2021-03-04 08:18
IDE: PyCharm
Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530
"""
base_dir = 'files/'  # 定义一个变量 文件路径

# 读文件的函数
def read_file(file_name):
    try:
        with open(base_dir + file_name, 'r', encoding='utf8') as file:
            content = file.read()
            return content
    except FileNotFoundError:
        print('文件未找到')

def write_file(file_name):
    with open(base_dir + file_name, 'w', encoding='utf8') as file:
        pass

def write_json(file_name, data):
    with open(base_dir + file_name, 'w', encoding='utf8') as file:
        import json
        json.dump(data, file)

def read_json(file_name, default_data):
    try:
        with open(base_dir + file_name, 'r', encoding='utf8') as file:
            import json
            return json.load(file)
    except FileNotFoundError:
        # print('文件未找到')
        return default_data

"""
Project: ClassStudent
Creator: 猫猫
Create time: 2021-03-04 08:20
IDE: PyCharm
Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530
"""
# 加密密码
import hashlib
def encrypt_password(passwd, x='zhumaogouniu'):
    h = hashlib.sha256()
    h.update(passwd.encode('utf8'))
    h.update(x.encode('utf8'))
    return h.hexdigest()

"""
Project: ClassStudent
Creator: 猫猫
Create time: 2021-03-04 08:18
IDE: PyCharm
Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530
"""

class Teacher(object):
    def __init__(self, name, password):
        import tools
        self.name = name
        self.password = tools.encrypt_password(password)

class Student(object):
    def __init__(self, name, age, gender):
        self.name = name
        self.age = age
        self.gender = gender

    def __str__(self):
        return f'{self.name},{self.age},{self.gender}'

"""
Project: ClassStudent
Creator: 猫猫
Create time: 2021-03-04 12：08
IDE: PyCharm
Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530
"""
# 1.导入管理系统模块
import sys
import file_manager  # 导入自己写的读取文件模块
import model
import managerSystem

def register():
    # 读取文件,查看文件里是否有数据。如果文件不存在，默认是一个字典
    data = file_manager.read_json('data.json', {})
    while True:
        teacher_name = input('请输入账号(2~6位):')
        if not 2 <= len(teacher_name) <= 6:
            print('账号不符合要求,请重新输入!')
        else:
            break
    if teacher_name in data:
        print('注册失败!该账号已经被注册!')
        return

    while True:
        password = input('请输入密码(6~12位):')
        if not 6 <= len(password) <= 12:
            print('密码不符合要求,请重新输入!')
        else:
            break

    # 用户名密码都已经输入正确以后 将用户名和密码以key:value形式储存
    # 可以创建一个teacher对象
    t = model.Teacher(teacher_name, password)
    data[t.name] = t.password
    file_manager.write_json('data.json', data)

def login():
    # 读取文件,查看文件里是否有数据。如果文件不存在，默认是一个字典
    data = file_manager.read_json('data.json', {})
    teacher_name = input('请输入老师账号:')

    if teacher_name not in data:
        print('登录失败!该账号没有注册!')
        return
    password = input('请输入密码:')
    import tools
    if data[teacher_name] == tools.encrypt_password(password):
        managerSystem.name = teacher_name
        print('登录成功')
        student_manager= managerSystem.StudentManager()
        student_manager.run()

    else:
        print('密码错误,登陆失败!')
def start():
    content = file_manager.read_file('welcome.txt')
    while True:
        operate = input(content + '\n请选择(1-3)：')
        if operate == '1':
            print('登录')
            login()
        elif operate == '2':
            print('注册')
            register()
        elif operate == '3':
            print('退出')
            # break   # 把循环退出
            # exit(0)   # 退出整个程序
            sys.exit(0)  # 退出程序
        else:
            print('输入有误！')

# 2.启动管理系统
# 保证是当前文件运行才启动管理系统 : if -- 创建对象 并且调用run方法
if __name__ == '__main__':
    start()

"""
Project: ClassStudent
Creator: 猫猫
Create time: 2021-03-04 16:12
IDE: PyCharm
Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530
"""
import file_manager
from model import *

name = ''
class StudentManager(object):
    def __init__(self):
        # 存储学院数据 -- 列表
        self.student_list = []


    # 一.程序入口函数
    def run(self):
        # 1.加载文件里面的学员数据
        self.load_student()
        while True:
            # 2.显示功能菜单
            self.show_menu()
            # 3.用户输入目标功能序号
            menu_num = input('请输入你需要的功能序号:')

            # 4.根据用户输入的序号执行不同的功能
            if menu_num == '1':
                self.add_student()
            elif menu_num == '2':
                self.del_student()
            elif menu_num == '3':
                self.modify_student()
            elif menu_num == '4':
                self.search_student()
            elif menu_num == '5':
                self.show_student()
            elif menu_num == '6':
                self.sava_student()
            elif menu_num == '7':
                break
            else:
                print('输入错误')

    # 二。系统功能函数
    # 2.1 显示功能菜单 ---- 这种方法一般需要使用静态方法
    @staticmethod
    def show_menu():
        content = file_manager.read_file('students_page.txt')
        print(content)

    # 增加
    def add_student(self):
        # 1.用户输入信息
        name = input('请输入你的姓名:')
        age = input('请输入你的年龄:')
        gender = input('请输入你的性别:')

        # 2. 创建学员对象 -- 类 先导入student模块，在创建对象
        student = Student(name, age, gender)

        # 3.将该对象添加到学员列表
        self.student_list.append(student)

        print(self.student_list)
        print(student)

    # 删除
    def del_student(self):
        del_name = input('请输入要删除的学生名字:')

        # 遍历列表 有的话就删除没有就提示
        for i in self.student_list:
            if i.name == del_name:
                self.student_list.remove(i)
                break
        else:
            print('查无此人')

        print(self.student_list)

    # 修改
    def modify_student(self):
        modify_name = input('请输入要修改的学生名字:')

        for i in self.student_list:
            if i.name == modify_name:
                i.name = self.new_input(i.name, '请输入新修改的名字[回车则不修改]:')
                i.age = self.new_input(i.age, '请输入新修改的年龄[回车则不修改]:')
                i.gender = self.new_input(i.gender, '请输入新修改的性别[回车则不修改]:')
                print(f'修改学员信息成功,姓名 {i.name},年龄 {i.age},性别 {i.gender}')
                break
        else:
            print('查无此人')

    # 查找
    def search_student(self):
        search_name = input('请输入想查找的学生名字:')

        for i in self.student_list:
            if i.name == search_name:
                print(f'姓名 {i.name},年龄 {i.age},性别 {i.gender}')
                break
        else:
            print('查无此人')

    # 显示全部学生
    def show_student(self):
        print('姓名\t\t年龄\t性别')
        for i in self.student_list:
            print(f'{i.name}\t\t{i.age}\t\t{i.gender}')

    # 保存学员信息
    def sava_student(self):
        # 1.打开文件
        file = open('files/student.data', 'w')

        # 2.数据写入文件
        # 2.1 [学员对象] 转换成 [字典]
        # 使用列表推导式
        new_list = [i.__dict__ for i in self.student_list]

        # 2.2 文件写入 字符串数据
        file.write(str(new_list))
        file.close()

    # 加载信息
    def load_student(self):
        try:
            file = open('files/student.data', 'r')
        except FileNotFoundError:
            file = open('files/student.data', 'w')
        else:
            # 1.读取数据
            data = file.read()
            # 2.文件中读取的数据都是字符串且字符串内部为字典数据，
            # 故需要转换数据类型再转换字典为对象后存储到学院列表
            new_list = eval(data)
            # 创建学生类
            self.student_list = [Student(i['name'], i['age'], i['gender']) for i in new_list]
        finally:
            pass
            # 3.关闭文件
        file.close()

    # 重写的input方法
    def new_input(self, old, new):
        input_str = input(new)

        if len(input_str) > 0:
            return input_str
        else:
            return old