Python enables simple instance sharing of shopping carts

The following small series for everyone to bring a Python beginner shopping cart Program Practice example (recommended). Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little knitting.

Nonsense not much to say directly on the code

#Author: Lancy wuproduct_list=[(' Iphone ', 5800), (' Mac Pro ', 9800), (' Bike ', ' + '), (' Watch ', 10600), (' Coffee ', ' + '), (' Lanc Y Python ', +)] #商品列表shopping_list =[] #定义一个列表来存储已购商品salary =input ("Please enter Salary:") if Salary.isdigit (): #当输入的内容为数字 salary=int (salary) #将输入的工资转换成int类型 while True: #循环打印出所有商品列表, there are two ways of writing, typically with the following # for item in Product_list: # print (Product_list.index (item), item) for Index,item in Enumerate (product_list): #enumerate () This method is to take out the list subscript print (Index,item) user_choice=input (" Do you purchase goods? If you want to buy a product please enter the Product code: ") If User_choice.isdigit (): #当输入的商品编号为数字 user_choice=int (user_choice) #将输入的商品编号转换成int类型 if User_choic E<len (product_list) and user_choice>=0: #判断输入的商品编号是否存在 P_item=product_list[user_choice] #根据商品下标取出所购买的商品 if p_i Tem[1]<=salary: #当商品的价格小于等于余额 shopping_list.append (P_item) #将购买的商品存储到shopping_list [] list salary-=p_item[1] #计 Balance print ("The item you purchased is%s, balance is \033[31;1m%s\033[0m"% (p_item,salary)) #这个地方做了一下处理, highlight the balance to else: #当商品的价格大于余额 print ("\033 [41;1m your balance remains [%s]\033[0m]%salary) #这个地方做了一下处理, highlight the balance else:print ("The item does not exist! ") elif user_choice== ' Q ': #当输入的商品编号为q时, print the purchased goods and balances and exit the program print ("--------The following items are purchased--------") for p in Shopping_list:p Rint (p) print ("Your balance is:", salary) exit () Else:print ("The item does not exist!") ")