student_list=[]

def show_menu():
    print("请选择如下功能：")
    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.保存学员信息：")
    print("7.退出系统：")


def add_student():
    name=input("请输入您的姓名：")
    sex=input("请输入您的性别：")
    numbers=input("请输入您的电话：")
    student_dict=dict()
    student_dict["name"]=name
    student_dict["sex"]=sex
    student_dict["numbers"]=numbers
    student_list.append(student_dict)
    print(student_list)

def show_all_student():
    for index,student_dict in enumerate(student_list):
        student_id=index+1
        print("姓名:{},性别:{},电话:{}".format(student_dict["name"],student_dict["sex"],student_dict["numbers"]))

def modify_student():
    student_id = eval(input("请输入您要修改的学生学号:"))
    student_no = student_id - 1
    if 0 <= student_no < len(student_list):
        current = student_list[student_no]
        new_name = input("请输入修改后的姓名:")
        new_sex = input("请输入修改后的性别:")
        new_numbers= input("请输入修改后的电话:")
        current["name"] = new_name
        current["sex"] = new_sex
        current["numbers"] = new_numbers
        print("修改成功!")
    else:
        print("请输入合法的学号!")

def remove_student():
    student_id = eval(input("请输入要删除的学生学号:"))
    student_no = student_id - 1
    if 0 <= student_no < len(student_list):
        current = student_list.pop(student_no)
        print("删除的数据", current)
    else:
        print("请输入合法的学号!")


def query_student():
    name = input("请输入要查询的姓名:")
    for index, student_dict in enumerate(student_list):
        if name == student_dict["name"]:
            student_id = index + 1
            print("姓名:{},性别:{},电话:{}".format( student_dict["name"],
                                                   student_dict["sex"],student_dict["numbers"]))
            break
        else:
            print("对不起，你查找的用户不存在")


def start():
    while True:
        show_menu()
        menu_option = input("请输入您需要的功能序号：")
        if menu_option == "1":
            print("添加学员")
            add_student()
        elif menu_option == "2":
            print("删除学员")
            remove_student()
        elif menu_option == "3":
            print("修改学员信息")
            modify_student()
        elif menu_option == "4":
            print("查询学员信息")
            query_student()
        elif menu_option == "5":
            print("显示所有学员信息")
            show_all_student()
        elif menu_option == "6":
            print("退出")
            break
        else:
            print("输入格式错误")
            break
start()