Failing Output in Python

Question

The goal is to create a class object for a grocery list then output the list. Output should say something like "Item 1...Enter the item name:" but with the input's item show as well. Here is my current code:

class ItemToPurchase:

    def __init__(self):
        self.item_name = "none"
        self.item_price = 0.0
        self.item_quantity = 0
        
    def print_item_cost(self, item_name, item_price, item_quantity):
        return (item_quantity * item_price)


if __name__ == "__main__":
    
    items=[]
    for i in range(2):
          item_name=input("Enter the item name:\n")
          item_price=float(input("Enter the item price:\n"))
          item_quantity = int(input("Enter the item quantity:\n"))
          items.append(item_name)
          items.append(item_price)
          items.append(item_quantity)
    
    one = items[0:3:1]
    two = items[3:6:1]
    objs1 = ItemToPurchase()
    res1 = objs1.print_item_cost(one[0], one[1], one[2])
    objs2 = ItemToPurchase()
    res2 = objs2.print_item_cost(two[0], two[1], two[2])
    result = res1+res2

    print("TOTAL COST:\n",result)