roman-numerals

gistfile1.py

def checkio(data):
    def make_rn(i, v, x):
        rn = [i*n for n in range(4)]
        rn.append(i+v)
        rn.append(v)
        rn += [v+i*n for n in range(1,4)]
        rn.append(i+x)
        return rn
    Roman = [make_rn("I", "V", "X"),
            make_rn("X", "L", "C"),
            make_rn("C", "D", "M"),
            make_rn("M", "", "")[:4]]
    nums = [int(i) for i in reversed(str(data))]
    return "".join(reversed([Roman[i][nums[i]] for i in range(len(nums))]))

なんかごちゃごちゃしたの多かった
ゼロになるまで処理するとか