old_contents: # class Solution(object):
  #     def intToRoman(self, num):
  #         """
  #         :type num: int
  #         :rtype: str
  #         """
  #
  class Solution(object):
      # def intToRoman(self, num):
      #     #http://www.rapidtables.com/convert/number/how-number-to-roman-numerals.htm
      #     roman_dim = [[1000, 'M'], [900, 'CM'], [500, 'D'], [400, 'CD'],
      #                  [100, 'C'], [90, 'XC'], [50, 'L'], [40, 'XL'], [10, 'X'],
      #                  [9,'IX'], [5, 'V'], [4, 'IV'], [1, 'I']]
      #     if num == 0:
      #         return ''
      #     roman_str = ''
      #     current, dim = num, 0
      #     while current != 0:
      #         while current // roman_dim[dim][0] == 0:
      #             dim += 1
      #         while current - roman_dim[dim][0] >= 0:
      #             current -= roman_dim[dim][0]
      #             roman_str += roman_dim[dim][1]
      #     return roman_str
  
      def intToRoman(self, num):
          values = [1000, 900, 500, 400,
                    100, 90, 50, 40,
                    10, 9, 5, 4, 1]
          symbols = ["M", "CM", "D", "CD",
                     "C", "XC", "L", "XL",
                     "X", "IX", "V", "IV",
                     "I"]
          roman = ''
          i = 0
          while num > 0:
              k = num / values[i]
              for j in range(k):
                  roman += symbols[i]
                  num -= values[i]
              i += 1
          return roman
  
  if __name__ == '__main__':
      # begin
      s = Solution()
      print s.intToRoman(90)
new_contents: # class Solution(object):
  #         def intToRoman(self, num: int) -> str:
  #         """
  #         :type num: int
  #         :rtype: str
  #         """
  #
  class Solution(object):
      # def intToRoman(self, num: int) -> str:
          ## http://www.rapidtables.com/convert/number/how-number-to-roman-numerals.htm
          # roman_dim = [[1000, 'M'], [900, 'CM'], [500, 'D'], [400, 'CD'],
          #             [100, 'C'], [90, 'XC'], [50, 'L'], [40, 'XL'], [10, 'X'],
          #             [9,'IX'], [5, 'V'], [4, 'IV'], [1, 'I']]
          # if num == 0:
          #     return ''
          # roman_str = ''
          # current, dim = num, 0
          # while current != 0:
          #     while current // roman_dim[dim][0] == 0:
          #         dim += 1
          #     while current - roman_dim[dim][0] >= 0:
          #         current -= roman_dim[dim][0]
          #         roman_str += roman_dim[dim][1]
          # return roman_str
  
      def intToRoman(self, num: int) -> str:
          values = [1000, 900, 500, 400,
                    100, 90, 50, 40,
                    10, 9, 5, 4, 1]
          symbols = ["M", "CM", "D", "CD",
                     "C", "XC", "L", "XL",
                     "X", "IX", "V", "IV",
                     "I"]
          roman = ''
          i = 0
          while num > 0:
              k = num // values[i]
              for j in range(k):
                  roman += symbols[i]
                  num -= values[i]
              i += 1
          return roman
  
  if __name__ == '__main__':
      # begin
      s = Solution()
      print s.intToRoman(90)
subject: Change 012 to Python3