def menu():
    print("1、添加学员")
    print("2、删除学员")
    print("3、修改学员信息")
    print("4、查询学员信息")
    print("5、显示所有学员信息")
    print("6、退出系统")
    h = input("请输入你要选择的功能：")
    if(h.isdigit() == False):
        print("输入有误！请重新输入！")
        menu()
    h = int(h)
    if (h==1):
        addStudent();
    elif (h==2):
        delSutdent();
    elif (h==3):
        updateStudent();
    elif (h==4):
        selectStudent();
    elif (h==5):
        allStudent();
    elif (h==6):
        return
    else:
        print("输入有误！请重新输入！")
        menu()
    menu()

list = []


def addStudent():
    name =input("请输入姓名：")
    sex = input("请输入性别")
    tel = input("请输入电话")
    student = [name,sex,tel]
    list.append(student)
    print("添加成功！")

def delSutdent():
    name = input("请输入要删除的姓名：")
    for i in list:
        if i[0] == name:
            list.remove(i)
            print("删除成功！")
            return
        else:
            print("不存在，{}".format(name))


def updateStudent():
    name = input("请输入要更新的姓名：")
    for i in list:
        if i[0] == name:
            i[0] = input("请输入姓名：")
            i[1] = input("请输入性别")
            i[2] = input("请输入电话")
            print("更新完成！")
            return
        else:
            print("不存在，{}".format(name))


def selectStudent():
    name = input("请输入要查询的姓名：")
    for i in list:
        if i[0] == name:
            print("姓名：{}，性别：{}，电话：{}".format(i[0],i[1],i[2]))
            break
        else:
            print("不存在，{}".format(name))
    print("查询完成！")
def allStudent():
    for i in list:
        print("姓名：{}，性别：{}，电话：{}".format(i[0],i[1],i[2]))
    print("查询完成！")
menu()