def get_digit_sum(n):
    return sum(map(int, str(n)))


def euler_056():
    s = max([get_digit_sum(a**b) for a in range(1, 100)
             for b in range(1, 100)])
    return s


if __name__ == "__main__":
    print("e056.py: " + str(euler_056()))
    assert(euler_056() == 972)