def main(): numerals = ['M', 'D', 'C', 'L', 'X', 'V', 'I'] decimals = [1000, 500, 100, 50, 10, 5, 1] count = 0 result = '' number = int(input('Dezimalzahl > ')) while number > 0: if (number >= decimals[count]): result += numerals[count] number = number - decimals[count] else: count = count + 1 print(result) return numerals, decimals if __name__ == '__main__': main()