学生管理系统

def menu():
    print('=====欢迎进入学生管理系统=====\n1.添加学生\n2.查找学生\n3.删除学生\n9.退出系统'+'\n'+'='*30)
    global order
    order=input('请选择你需要的操作：')
def back():
    print('='*30+'\n1.继续\n2.返回目录'+'\n'+'='*30)
    order1=input('请选择你需要的操作：')
    return order1

def num():
    with open('./manage.json') as f:
        student_manage = json.load(f)
    num = 2012084020001
    for student in student_manage:
        if student['学号']>=num:
            num=student['学号']+1
    while True:
        yield num
        num+=1
def add_student():
    global  student_manage
    global ge1
    try:
        with open('./manage.json') as f:
            student_manage = json.load(f)
    except :
        with open('./manage.json', 'w') as f:
            str1=json.dumps([])
            f.write(str1)
        with open('./manage.json') as f:
            student_manage = json.load(f)
    student ={}
    name = input('输入添加学生姓名：')
    student['姓名'] = name
    age = input('输入年龄：')
    student['年龄'] = age
    phone = input('输入电话：')
    student['电话'] = phone
    student_num=next(ge1)
    student['学号'] = student_num
    student = {'姓名': name, '年龄': age, '电话': phone, '学号': student_num}
    student_manage.append(student)
    with open('./manage.json', 'w') as f:
        str1 = json.dumps(student_manage)
        f.write(str1)
def find_student():
    try:
        with open('./manage.json') as f:
            student_manage = json.load(f)
    except :
        with open('./manage.json', 'w') as f:
            str1=json.dumps([])
            f.write(str1)
        with open('./manage.json') as f:
            student_manage = json.load(f)
    print('='*30+'\n1.查找学生\n2.查看所有'+'\n'+'='*30)
    order1=input('请选择你需要的操作：')
    if order1=='1':
        name=input('输入学生姓名：')
        k=0
        for student in student_manage:
            if student.get('姓名')==name:
                print(student)
                k+=1
        if k==0:
            print('**没有这个学生**')
    elif order1=='2':
        for student in student_manage:
            print(student)
        if len(student_manage)==0:
            print('**没有任何学生信息**')
    else:
        print('**请正确操作**')
        find_student()

def del_student():
    try:
        with open('./manage.json') as f:
            student_manage = json.load(f)
    except :
        with open('./manage.json', 'w') as f:
            str1=json.dumps([])
            f.write(str1)
        with open('./manage.json') as f:
            student_manage = json.load(f)
    name=input('请输入删除学生姓名：')
    k=0
    del_stu=[]
    for student in student_manage[:]:
        if student.get('姓名')==name:
            del_stu.append(student)
    if len(del_stu)==0:
            print('**没有这个学生**')
    elif len(del_stu)==1:
        student_manage.remove(del_stu[0])
        print('已删除学生：'+del_stu[0]['姓名'])
    else:
        x=1
        for student1 in del_stu:
            print(x,student1)
            x+=1
        y=input('删除学生序号：')
        y=int(y)
        student_manage.remove(del_stu[y-1])
    with open('./manage.json', 'w') as f:
        str1 = json.dumps(student_manage)
        f.write(str1)


import json
ge1=num()
while True:
    print('=====欢迎进入学生管理系统=====\n1.登陆\n2.注册\n3.退出\n'+'='*30)
    try:
        with open('./user.json') as f:
            users = json.load(f)
    except:
        with open('./user.json', 'w') as f:
            str1 = json.dumps([])
            f.write(str1)
        with open('./manage.json') as f:
            users = json.load(f)
    order2=input()
    if order2 == '3':
        exit('退出学生管理系统')
    if order2=='2':
        user={}
        user_id=input('输入账号：')
        user_pw=input('输入密码：')
        user['账号']=user_id
        user['密码'] = user_pw
        users.append(user)
        with open('./user.json', 'w') as f:
            str1 = json.dumps(users)
            f.write(str1)
    elif order2=='1':
        user_id=input('输入账号：')
        user_pw=input('输入密码：')
        user_in={}
        user_in['账号']=user_id
        user_in['密码'] = user_pw
        k=0
        for index in range(len(users)):
            if users[index]==user_in:
                k+=1
        if k==0:
            n=0
            for user in users:
                if user['账号']==user_id:
                    n+=1
            if n==0:
                print('没有该用户，请从新输入！')
                continue
            else:
                print('密码错误，请从新输入！')
                continue
        else:
            break
    else:
        print('**请正确操作**')
        continue
while True:
    menu()
    if order=='9':
        exit('已退出学生管理系统')
    elif order=='1':
        while True:
            add_student()
            order1=back()
            if order1=='1':
                continue
            elif order1=='2':
                break
            else:
                print('**请正确操作**')
                break
            continue
    elif order=='2':
        while True:
            find_student()
            order1=back()
            if order1=='1':
                continue
            elif order1=='2':
                break
            else:
                print('**请正确操作**')
                break
            continue
    elif order=='3':
        while True:
            del_student()
            order1 = back()
            if order1 == '1':
                continue
            elif order1 == '2':
                break
            else:
                print('**请正确操作**')
                break
            continue
    else:
        print('**请正确操作**')
        continue