dic = { }

while True :

    product = input("enter the name of product (enter q for quit )= ")

    if product == "q" or product == "Q" :

        break

    else :

        price = int(input("enter the price of product = "))

        dic [ product ] = price

while True :

    name = input("enter the name of product those you are entered (enter q for quit )= ")

    if name == "q" or name == "Q" :

        break

    else :

        if name not in dic :

            print("name of product is invaild")

        else :

            print("price of product = ",dic[name])