[开发工具]Python学习：学员管理系统

代码如下：

def info_print():
    print("请选择功能----------------")
    print("1,添加成员")
    print("2,删除成员")
    print("3,修改成员")
    print("4,查询成员")
    print("5,显示所有成员")
    print("6,退出系统")
    print("-" * 24)


info = []


def add_info():   # 添加
    """添加学员信息"""
    new_id = input('请输入学号：')
    new_name = input('请输入姓名：')
    new_tel = input('请输入手机号：')

    global info
    for i in info:
        if new_name == i['name']:
            print('该用户已经存在！')
        return

    info_dict = dict()
    info_dict['id'] = new_id
    info_dict['name'] = new_name
    info_dict['tel'] = new_tel
    info.append(info_dict)
    print(info)

def del_info():
    """删除学员"""
    del_name = input('请输入要删除的学员的姓名：')
    global info
    for i in info:
        if del_name == i['name']:
            info.remove(i)
            break
    else:
        print('该学员不存在')
    print(info)


def modify_info():
    """修改函数"""
    modify_name = input('请输入要修改的学员的姓名：')
    global info
    for i in info:
        if modify_name == i['name']:
            i['tel'] = input('请输入新的手机号：')
            break
    else:
        print('该学员不存在')
    print(info)


def search_info():
    """查询学员"""
    search_name = input('请输入要查找的学员姓名：')
    global info
    for i in info:
        if search_name == i['name']:
            print('查找到的学员信息如下：-----------')
            print(f"该学员的学号是{i['id']}, 姓名是{i['name']}, 手机号是{i['tel']}")
            break
    else:
        print('该学员不存在')


def print_all():
    """显示所有学员的信息"""
    print('学号\t姓名\t手机号')
    for i in info:
        print(f"{i['id']}\t{i['name']}\t{i['tel']}")


while True:
    info_print()
    user_num = int(input('请输入功能序号：'))
    if user_num == 1:
        add_info()
    elif user_num == 2:
        del_info()
    elif user_num == 3:
        modify_info()
    elif user_num == 4:
        search_info()
    elif user_num == 5:
        print_all()
    elif user_num == 6:
        exit_flag = input('确定要退出吗？yes or no')
        if exit_flag == 'yes':
            break
    else:
        print('输入的功能序号有误')