Python Small Code _3_ shopping Cart

Product_list = [    ('MacBook', 9000),    ('Kindle', 500),    ('Tesla', 900000),    (' Book', 100),    ('Bike', 2000),]saving= Input ("Please input your money:") Shopping_car= []ifsaving.isdigit (): Saving=int (saving) whileTrue:#Print Product Content         forI, VinchEnumerate (product_list, 1):            PrintI">>>", V)#Guide users to select ProductsChoice = input ("choose goods that's want to buy[exit:q]:")        #Verify that the input is legitimate        ifchoice.isdigit (): Choice=int (choice)ifChoice > 0 andChoice <=Len (product_list):#Select a product to be selected by choiceP_item = product_list[choice-1]                #If the money is sufficient, subtract the commodity price with saving and add the item to the shopping cart                ifP_ITEM[1] <=saving:saving-= P_item[1] Shopping_car.append (p_item)Else:                    Print("-----------------")                    Print("Sorry, your balance is not enough.")                    Print("Your Balance:"+str (saving))Print("-----------------")                    Continue                Print("-----------------")                Print("You have chose"+p_item[0])Print("Your Balance:"+str (saving))Print("-----------------")            Else:                Print("Non existent")        elifChoice = ='Q':            Print("---------------")            Print("You have chose the following goods:")            Print("Goods\t\tnumber\tprice") Num= 1#Loop through the goods in the shopping cart, the shopping cart is stored in the purchased goods             forIinchShopping_car:Print(I[0] +"\t\t"+ str (num) +"\t\t"+ STR (i[1]))            Print()            Print("Balance:", saving)Print("---------------")             Break        Else:            Print("Invalid input")

Python small Code _3_ shopping Cart