from pprint import pprint
products = {}
cod = 0

def productsList():
    while cod != "9999":
        cod = input("Enter cod: ")
        if len.cod != 4:
            print("opps! the product isn't found, try agine")
            productsList()
        productName = input("Enter name: ")
        price = int(input("Enter price: "))
        products[cod] = [productName, price]
        print(products[cod])


while True:
    print("\n1. Create a new products list\n \
2. See lists\n \
3. Quit\n")
    userChoise = int(input())

    if userChoise == 1:
        productsList()

    elif userChoise == 2:
        print(AsStudents.keys)

    elif userChoise == 3:
        quit()