all_choose = 1
num = 1
all_student = []


def stu_insert():
    stu_dict = {}
    stu_name = input('请输入学生姓名:')
    stu_dict['姓名'] = stu_name
    stu_age = input('请输入学生年龄：')
    stu_dict['年龄'] = stu_age
    stu_tel = input('请输入学生电话：')
    stu_dict['电话'] = stu_tel
    stu_dict['学号'] = str(num).zfill(3)
    all_student.append(stu_dict)
    print('添加成功！')
    print('1.继续')
    print('2.返回')
    choose = int(input('🎈请选择（1-2）'))
    return choose


def see_all_student():
    for stu_dict in all_student:
        print(stu_dict)


def see_name_student():
    stu_name = input('✨输入学生姓名：')
    for stu_dict in all_student:
        if stu_dict['姓名'] == stu_name:
            print(stu_dict)
            break
    else:
        print('没有查到该学生信息！')


def see_number_student():
    stu_num = input('输入学生学号：')
    for stu_dict in all_student:
        if stu_dict['学号'] == stu_num.zfill(3):
            print(stu_dict)
            break
    else:
        print('没有查到该学生信息！')


def modify_student():
    stu_num = input('输入要修改学生的学号：')
    for stu_dict in all_student:
        if stu_dict['学号'] == stu_num.zfill(3):
            new_name = input('修改后的姓名为：')
            new_age = input('修改后的年龄为：')
            new_tel = input('修改后的电话为：')
            stu_dict['姓名'] = new_name
            stu_dict['年龄'] = new_age
            stu_dict['电话'] = new_tel
            print('修改成功！')
            break


def delete_student():
    stu_num = input('输入要删除学生的学号')
    for index in range(len(all_student)):
        if all_student[index]['学号'] == stu_num.zfill(3):
            all_student.pop(index)
            print('删除成功！')


while all_choose != 6:
    print('==================================')
    print('欢迎喵：')
    print('1.添加学生')
    print('2.查看学生')
    print('3.修改学生信息')
    print('4.删除学生')
    print('5.返回')
    print('6.退出')
    print('==================================')
    all_choose = int(input('请选择(1-6)'))

    if all_choose == 1:
        choose1 = 1
        while choose1 == 1:
            choose1 = stu_insert()
            num += 1

    if all_choose == 2:
        print('1.查看所有学生')
        print('2.按姓名查找')
        print('3.按学号查找')
        print('4.返回')
        choose2 = int(input('请选择（1-4）'))
        if choose2 == 1:
            see_all_student()
        if choose2 == 2:
            see_name_student()
        if choose2 == 3:
            see_number_student()

    if all_choose == 3:
        modify_student()

    if all_choose == 4:
        delete_student()