python基礎學習之利用列表寫購物車程式及其優化程式
阿新 • • 發佈:2019-01-27
product_list= [ ('IPhone',5800), ('book',38), ('bike',800), ('bow',70), ('cap',100), ('map',10), ] shopping_list=[] salary=input("you salary is:") if salary.isdigit(): #判斷整數 salary=int(salary) while True: for index,item in enumerate(product_list): #取出列表下標 #print(product_list.index(item),item) print(index,item) user_choice=input("選擇要買什麼?>>>;") if user_choice.isdigit(): user_choice=int(user_choice ) if user_choice< len(product_list) and user_choice >=0: p_item=product_list[user_choice ] #包含名稱和價格 if p_item[1] <= salary: #買得起 shopping_list.append(p_item ) salary-=p_item[1] print("Added %s into shopping cart,your current balance is salary\033[31;1m%s\033[0m"%(p_item,salary)) else: print("你的餘額只剩\033[32;1m%s\033[0m啦,還買個毛線!"%salary ) else: print("product [%s] code is not exist!"%user_choice ) elif user_choice == 'q': print("--------shopping list--------") for p in shopping_list : print(p) print("your current balance is:",salary) exit() else: print("invalid option") else: print("invalid format")
優化: