day10作业stu_sys_2_0_1

login界面

import file_funcs
import stu_sys


# 登录注册界面
def list_login():
    print('''
    +++++++++++++++++++++++++++++++++++++++++++++++++
    +        welcome to student manage system       +
    +                   1.register                  +
    +                                               +
    +                   2.login                     +
    +                                               +
    +                   0.exit                      +
    +++++++++++++++++++++++++++++++++++++++++++++++++
    ''')
    cmd = input('>>>>>>>')
    if '0' <= cmd <= '2':
        return cmd
    else:
        print('输入内存错误！')
        return False


def login():
    while True:
        result = list_login()
        if not result:
            continue
        if result == '1':
            user_name = input('请输入用户名：')
            users = file_funcs.get_infos('users')
            for index in range(len(users)):
                if user_name == users[index]['name']:
                    print('该用户名已经存在！')
                    break
            else:
                password = input('请输入密码：')
                password_confirm = input('请再次输入密码：')
                if password == password_confirm:
                    new_user = {'name': user_name, 'password': password, 'database': user_name+'_database', 'stu_nums': '0',
                            'stu_id_next': '1'}
                    file_funcs.add_info('users', new_user)
                    print('注册成功！')
                else:
                    print('两次密码不一致！注册失败！')
        if result == '2':
            user_name = input('请输入用户名：')
            password = input('请输入密码：')
            users = file_funcs.get_infos('users')
            for index in range(len(users)):
                if user_name == users[index]['name']:
                    if password == users[index]['password']:
                        print('登录成功！')
                        stu_sys.main(user_name, users[index]['database'])
                    else:
                        print('密码错误！')
                        break
            else:
                print('用户名不存在！')

        if result == '0':
            return


if __name__ == '__main__':
    login()

文件读写

import json


# 获取信息
def get_infos(file_name):
    try:
        with open('./files/'+file_name+'.json', 'r', encoding='utf-8') as f:
            all_stu_infos = json.load(f)
    except FileNotFoundError:
        all_stu_infos = []

    return all_stu_infos


# 添加信息
def add_info(file_name, stu_info):
    # 获取之前的学生信息
    all_stu_infos = get_infos(file_name)
    with open('./files/'+file_name+'.json', 'w', encoding='utf-8') as f:
        # 将新的学生信息添加到所有学生信息的最后
        all_stu_infos.append(stu_info)
        # 保存所有信息
        json.dump(all_stu_infos, f)
        # 返回保存成功的信息
        return True


# 重新写入
def rewrite(file_name, stu_info):
    with open('./files/'+file_name+'.json', 'w', encoding='utf-8') as f:
        # 保存所有信息
        json.dump(stu_info, f)
        # 返回保存成功的信息
        return True


if __name__ == '__main__':
    pass

dao方法

import file_funcs

# 查找学生
def stu_find(file_name):
    stu_infos = file_funcs.get_infos(file_name)
    stu_info = input('请输入学生的学号:')
    for index_info in range(len(stu_infos)):
        # 学生信息存在
        if stu_info == stu_infos[index_info]['stu_id']:
            return stu_infos[index_info]
        # 学生信息不存在
    else:
        return stu_info


# 查找全部
def stu_find_all(file_name):
    stu_infos = file_funcs.get_infos(file_name)
    for index_info in range(len(stu_infos)):
        print('姓名:%s\t学号:%s\t英语:%s\t体育:%s\t美术:%s\t数学:%s\t年龄:%s\t' % (stu_infos[index_info]['name'],
                                                                     stu_infos[index_info]['stu_id'],
                                                                     stu_infos[index_info]['score']['English'],
                                                                     stu_infos[index_info]['score']['PE'],
                                                                     stu_infos[index_info]['score']['art'],
                                                                     stu_infos[index_info]['score']['math'],
                                                                     stu_infos[index_info]['age']))


# 添加学生信息
def stu_create(file_name, name, stu_id, english, pe, art, math, age):
    # stu_infos.append({'name':name, 'stu_id':stu_id,'score':{'English':english, 'PE':pe, 'art':art, 'math':math},
    #                   'age':age})
    file_funcs.add_info(file_name, {'name': name, 'stu_id': stu_id, 'score': {'English': english, 'PE': pe, 'art': art,
                                                                              'math': math}, 'age': age})


# 删除学生信息
def stu_del(file_name, stu_info):
    stu_infos = file_funcs.get_infos(file_name)
    index_stu = stu_infos.index(stu_info)
    del stu_infos[index_stu]
    file_funcs.rewrite(file_name, stu_infos)
    print('删除信息成功！')


def stu_num_id_get(user_name):
    users = file_funcs.get_infos('users')
    for index in range(len(users)):
        if user_name == users[index]['name']:
            stu_nums = users[index]['stu_nums']
            stu_id = users[index]['stu_id_next']
            users[index]['stu_nums'] = str(int(users[index]['stu_nums'])+1)
            users[index]['stu_id_next'] = str(int(users[index]['stu_id_next'])+1)
            file_funcs.rewrite('users', users)
            return stu_nums, stu_id


def stu_num_del(user_name):
    users = file_funcs.get_infos('users')
    for index in range(len(users)):
        if user_name == users[index]['name']:
            users[index]['stu_nums'] = str(int(users[index]['stu_nums']) - 1)
            file_funcs.rewrite('users', users)
            return


if __name__ == '__main__':
    pass

学生管理系统

import dao


def list_main():
    print('''
        +++++++++++++++++++++++++++++++++++++++++++++++++
        +       welcome to student manage system        +
        +       1.add student information               +
        +       2.View personal information by id       +
        +       3.del personal information by id        +
        +       4.view all information                  +
        +       5.view personal average score by id     +
        +       0.exit                                  +
        +++++++++++++++++++++++++++++++++++++++++++++++++
            ''')
    user_cmd = input('>>>>>')
    return user_cmd


# 判断用户输入
def user_input(user_cmd):
    if user_cmd == '1':
        while True:
            stu_nums, stu_id = dao.stu_num_id_get(file_user)
            name, english, pe, art, math, age = stu_info_input()
            dao.stu_create(file_name, name, stu_id, english, pe, art, math, age)
            # 判断是否继续或者退出
            print('''
                    1.继续添加
                    2.返回上一层
                    ''')
            user_cmd = input('>>>>>')
            if user_cmd == '1':
                continue
            elif user_cmd == '2':
                return
            else:
                print('输入有误!')
                return

    elif user_cmd == '2':
        while True:
            stu_info = dao.stu_find(file_name)
            if isinstance(stu_info, str):
                print('学生信息不存在！')
            else:
                # 打印学生信息
                print('姓名:%s\t学号:%s\t英语:%s\t体育:%s\t美术:%s\t数学:%s\t年龄:%s\t' % (
                    stu_info['name'], stu_info['stu_id'], stu_info['score']['English'], stu_info['score']['PE'],
                    stu_info['score']['art'], stu_info['score']['math'], stu_info['age']))
                # 判断是否继续或者退出
                print('''
                                1.继续查看
                                2.返回上一层
                                ''')
                user_cmd = input('>>>>>')
                if user_cmd == '1':
                    continue
                elif user_cmd == '2':
                    return
                else:
                    print('输入有误!')
                    return

    elif user_cmd == '3':
        while True:
            stu_info = dao.stu_find(file_name)
            if isinstance(stu_info, str):
                print('学生信息不存在！')
            else:
                dao.stu_del(file_name, stu_info)
                dao.stu_num_del(file_user)
                # 判断是否继续或者退出
                print('''
                                1.继续删除
                                2.返回上一层
                                ''')
                user_cmd = input('>>>>>')
                if user_cmd == '1':
                    continue
                elif user_cmd == '2':
                    return
                else:
                    print('输入有误!')
                    return

    elif user_cmd == '4':
        while True:
            dao.stu_find_all(file_name)
            # 判断是否继续或者退出
            print('''
                            1.继续查看
                            2.返回上一层
                            ''')
            user_cmd = input('>>>>>')
            if user_cmd == '1':
                continue
            elif user_cmd == '2':
                return
            else:
                print('输入有误!')
                return

    elif user_cmd == '5':
        while True:
            stu_info = dao.stu_find(file_name)
            if isinstance(stu_info, str):
                print('学生信息不存在！')
            else:
                score_ave(stu_info)
                # 判断是否继续或者退出
                print('''
                                1.继续查询
                                2.返回上一层
                                ''')
                user_cmd = input('>>>>>')
                if user_cmd == '1':
                    continue
                elif user_cmd == '2':
                    return
                else:
                    print('输入有误!')
                    return

    elif user_cmd == '0':
        exit(0)
    else:
        print('输入内容有误！')


# 用户输入学生信息
def stu_info_input():
    name = input('请输入学生的姓名：')
    english = input('请输入音乐成绩：')
    pe = input('请输入体育成绩：')
    art = input('请输入美术成绩：')
    math = input('请输入数学成绩：')
    age = input('请输入学生的年龄：')
    return name, english, pe, art, math, age


# 平均成绩
def score_ave(stu_info):
    score_average = (int(stu_info['score']['English']) + int(stu_info['score']['PE']) +
                     int(stu_info['score']['art']) + int(stu_info['score']['math'])) / 4
    print('姓名:%s\t学号:%s\t平均成绩是:%0.2f' % (
        stu_info['name'], stu_info['stu_id'], score_average))


# 主程序
def main(user_name, user_database):
    global file_user
    file_user = user_name
    global file_name
    file_name = user_database
    # global stu_infos
    # stu_infos = file_funcs.get_infos(user_name)
    while True:
        # 打印列表内容，等待用户输入
        user_input(list_main())


# 开始程序
if __name__ == '__main__':
    pass