codejam A excerpt

def process_list():
    full, my_list = construct()
    output = "none"
    if output == "none":
        output = checkrow(my_list, 0)
    if output == "none":
        output = checkrow(my_list, 1)
    if output == "none":
        output = checkrow(my_list, 2)
    if output == "none":
        output = checkrow(my_list, 3)
    if output == "none":
        output = checkcol(my_list, 0)
    if output == "none":
        output = checkcol(my_list, 1)
    if output == "none":
        output = checkcol(my_list, 2)
    if output == "none":
        output = checkcol(my_list, 3)
    if output == "none":
        output = check_diagonal(my_list)

    return full, output