with open(os.path.join(my_path, "scores.csv"), "r") as my_file:
    my_file_reader = csv.reader(my_file)
    a = {}
    for name, score in my_file_reader:
        try:
            if a[name] < score:
                a[name] = score
                print(a)
        except:
            a[name] = score