studentList = [["tsy", "男", "123"]]
tempList = []


def add_student():
    temp = []
    initList()
    name = input("请输入姓名：")
    if search_user(name) != -1:
        print("用户已存在")
        return
    sex = input("请输入性别：")
    phone = input("请输入电话：")
    temp.append(name)
    temp.append(sex)
    temp.append(phone)
    tempList.append(temp)


def del_user(name):
    initList()
    if search_user(name) == -1:
        print("未找到此用户")
        return
    tempList.remove(tempList[search_user(name)])

def search_user(name):
    for i in range(len(studentList)):
        if studentList[i][0] == name:
            return i
        else:
            return -1

def update_user():
    initList()
    temp = []
    name = input("请输入姓名：")
    if search_user(name) == -1:
        print("未找到此用户")
        return
    sex = input("请输入性别：")
    phone = input("请输入电话：")
    temp.append(name)
    temp.append(sex)
    temp.append(phone)
    tempList[search_user(name)] = temp

def quaryAll():
    return studentList

def saveInfo():
    studentList.clear()
    studentList.extend(tempList)
    tempList.clear()
    print("操作已保存")

def initList():
    tempList.clear()
    tempList.extend(studentList)

def init():
    print("请选择如下功能\n1：添加学员\n2：删除\n3：修改该学员\n4：查询学员\n5：显示所有学员\n6：保存学员信息\n7：退出")
    action = int(input("请输入您需要的功能序号："))
    while action != 7:
        if action == 1:
            add_student()
        elif action == 2:
            name = input("输入要删除的学生姓名：")
            del_user(name)
        elif action == 3:
            update_user()
        elif action == 4:
            name = input("输入要查询的学生姓名：")
            res = studentList[search_user(name)] if search_user(name) != -1 else "未找到"
            print(res)
        elif action == 5:
            print(quaryAll())
        elif action == 6:
            saveInfo()
        action = int(input("请输入您需要的功能序号："))

if __name__ == '__main__':
    init()