Python系列（1）——函數的應用之名片管理系統

card_list = []


def main_desk():
    print('*'*50)
    print('歡迎使用【名片管理系統】V1.0')
    print('1.新建名片')
    print('2.顯示全部')
    print('3.查詢名片')
    print('0.退出系統')
    print('*'*50)


def new_card():
    print('新建名片')
    print('='*50)
    name_str = input('姓名：')
    age_str = input('年齡：')
    phone_str = input('電話：')
    card_dict = {'name': name_str, 'age': age_str, 'phone': phone_str}
    card_list.append(card_dict)
    print(card_dict)
    print(f'添加{name_str}名片成功')


def show_all():
    print('顯示全部名片')
    print('=' * 50)
    if len(card_list) == 0:
        print('名片為空，請先新建名片')
        return
    print('姓名\t\t年齡\t\t電話')
    for card_dict in card_list:
        print(f'{card_dict["name"]}\t\t{card_dict["age"]}\t\t{card_dict["phone"]}')


def search_card():
    print('查詢名片')
    find_name = input('請輸入查找的姓名：')
    for card_dict in card_list:
        if card_dict['name'] == find_name:
            print('='*50)
            print('姓名\t\t年齡\t\t電話')
            print(f'{card_dict["name"]}\t\t{card_dict["age"]}\t\t{card_dict["phone"]}')
            deal_card(card_dict)
            break
    else:
        print('名片不存在，請重新輸入')


def deal_card(find_dict):
    action = input('請輸入操作：【1】修改【2】刪除【0】返回菜單:')
    if action == '1':
        find_dict['name'] = work(find_dict['name'], '姓名：')
        find_dict['age'] = work(find_dict['age'], '年齡：')
        find_dict['phone'] = work(find_dict['phone'], '電話：')
        print('修改名片成功')
    elif action == '2':
        card_list.remove(find_dict)
        print('刪除成功')


def work(dict_value, message):
    result_str = input(message)
    if len(result_str) > 0:
        return result_str
    else:
        return dict_value


while True:
    main_desk()
    action_str = input('請輸入您的操作：')
    print(f'您的操作是【{action_str}】')
    if action_str == '1':
        new_card()
    elif action_str == '2':
        show_all()
    elif action_str == '3':
        search_card()
        pass
    elif action_str == '0':
        print('歡迎您再次使用【名片管理系統】')
        break
    else:
        print('您的輸入有誤，請重新輸入操作')