I would like to give some feedback about this puzzle, the last assert is wrong.
From: http://www.checkio.org/mission/roman-numerals/solve/
HTTP_USER_AGENT:
Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
Created at: 2015/08/20 14:23; Updated at: 2015/08/20 21:48