import cards_tool# 主業務邏輯cards_tool.read_card()  # 1.顯示用戶主界面while True: cards_tool.show_menu() menu_str = input("請選擇執行的操作:") print("您選擇的功能:%s" % menu_str) if menu_str == "1":  cards_tool.create_card() elif menu_str == "2":  cards_tool.show_card_all() elif menu_str == "3":  cards_tool.search_card() elif menu_str == "0":  cards_tool.write_card()  break else:  print("輸入有誤，請重新輸入")

import oscard_info_all = [] # 所有名片信息# 名片管理 具體功能def write_card(): """退出系統時，將名片信息保存到文件夾中""" f = open("E://workspace_python//FirstDemo//名片管理系統.txt", "w") f.write(str(card_info_all)) f.close()  def read_card(): """進入系統時，將名片信息加載到內存中""" is_exist = os.path.exists("E://workspace_python//FirstDemo//名片管理系統.txt") if is_exist:  # 文件存在將信息加載到內存中  f = open("E://workspace_python//FirstDemo//名片管理系統.txt","r")  global card_info_all  card_info_all = eval(f.read())  # print(card_info_all)  f.close() else:  # 沒有文件創建空文件  f = open("E://workspace_python//FirstDemo//名片管理系統.txt", "w")  f.close() print(is_exist)  def show_menu(): """主菜單頁面展示""" print("*"*30) print("歡迎使用[命名管理系統] v1.0") print() print("1.新建名片") print("2.顯示全部") print("3.查詢名片") print() print("0.退出系統") print("*"*30)  def create_card(): """新建名片""" print("功能：新建名片") name = input("請輸入姓名:") phone = input("請輸入電話:") qq = input("請輸入qq號:") email = input("請輸入郵箱:") card_info = {"name":name,"phone":phone, "qq":qq, "email":email} card_info_all.append(card_info) print("添加%s的名片成功" % name)  def show_card_all(): """顯示所有名片""" print("功能：顯示全部") if not len(card_info_all):  print("沒有任何名片")  return print("name".ljust(14),"phone".ljust(14),"qq".ljust(14),"email".ljust(14),sep="") print("-"*56) for card in card_info_all:  print(card["name"].ljust(14),card["phone"].ljust(14),card["qq"].ljust(14),card["email"].ljust(14),sep="")  print("-"*56)  def search_card(): """查詢名片""" print("功能：查詢名片") name = input("請輸入查詢的姓名:") for card in card_info_all:  if name == card["name"]:   print("name".ljust(14), "phone".ljust(14), "qq".ljust(14), "email".ljust(14), sep="")   print("-" * 56)   print(card["name"].ljust(14), card["phone"].ljust(14), card["qq"].ljust(14), card["email"].ljust(14),sep="")   # 名片高級處理   set_card(card)   break; else:  print("沒有找到%s" % name)  def set_card(card): """名片的高級設置""" while True:  menu = input("請輸入對名片的操作：1.修改/ 2.刪除/ 0.返回上一級")  if menu == "1":   name = input("請輸入姓名:")   phone = input("請輸入電話:")   qq = input("請輸入qq號:")   email = input("請輸入郵箱:")   card["name"] = name   card["phone"] = phone   card["qq"] = qq   card["email"] = email   print("%s 的名片修改成功" % name)   return  elif menu == "2":   card_info_all.remove(card)   print("刪除名片成功")   return  elif menu == "0":   return  else:   print("輸入有誤，請重新輸入")