new_contents: # Time:  O(1)
  # Space: O(1)
  
  class Solution(object):
      def similarRGB(self, color):
          """
          :type color: str
          :rtype: str
          """
          def rounding(color):
              q, r = divmod(int(color, 16), 17)
              if r > 8: q += 1
              return '{:02x}'.format(17*q)
  
          return '#' + \
                  rounding(color[1:3]) + \
                  rounding(color[3:5]) + \
                  rounding(color[5:7])
  
subject: Create similar-rgb-color.py