# Author:show530shopping_mail = [  ('Iphone',5800),  ('Mac Pro',9800),  ('Bike',800),  ('Watch',10600),  ('Coffee',31),  ('Alex Python',120),]shopping_cart = []salary=input("請輸入您的工資金額：")if salary.isdigit():  salary=int(salary)  while True:    for index,item in enumerate(shopping_mail):      print(index,item)    enter_number=input("請輸入您要購買的商品編號：")    if enter_number.isdigit():      enter_number=int(enter_number)      if enter_number>-1 and enter_number<len(shopping_mail):        p_item=shopping_mail[enter_number]        if p_item[1]<=salary:          shopping_cart.append(p_item)          salary-=p_item[1]          print("您選購的商品金額是：/033[31m%s/033[0m，您的工資余額為：/033[31m%s/033[0m" % (p_item, salary))        else:          print("您的余額不足，無法繼續(xù)購買！")      else:         print("您輸入的商品編號不存在：")    elif enter_number=="q":      print("/033[0;32;40m------您本次購物清單為-------/033[0m")      for p in shopping_cart:        print(p)      print("您的余額為：/033[31m%s/033[0m"%(salary))      exit()    else:        print("/033[31m輸入有誤，必須輸入數(shù)字或者正整數(shù)！/033[0m")