# function that loads given .txt file and return is as list of lists
def open_file(file_name)
    try:
        with open(str(os.path.abspath(__file__)+str(file_name)), "r") as f:
            lines = f.readlines()
            game_statistic_list = [element.replace("\n", "").split("\t") for element in lines]
    except IOError:
        print("%s does not exist in program directory" % file_name)

    return game_statistic_list