def decor(func, first_name, last_name):
    name_str = func(first_name, last_name)
    return "-" * len(name_str) + "\n" + name_str + "\n" + "-" * len(name_str)


def my_name(first_name="", last_name=""):
    return f"| {first_name} | {last_name} |"


print(decor(my_name, "Alexander", "Iyunsky"))