old_contents: from __future__ import absolute_import
  
  from . import range_string
  
  
  class HandRange:
      def __init__(self, s):
          self.string = s
          self.tokens = range_string.string_to_tokens(s)
          self.hands = range_string.string_to_hands(s)
  
      def __iter__(self):
          for x in self.hands:
              yield x
  
      def __len__(self):
          return len(self.hands)
  
  
new_contents: from __future__ import absolute_import
  
  from . import range_string
  
  
  class HandRange:
      def __init__(self, s):
          self.string = s
          self.tokens = range_string.string_to_tokens(s)
          self.hands = range_string.string_to_hands(s)
  
      def __iter__(self):
          for x in self.hands:
              yield x
  
      def __len__(self):
          return len(self.hands)
  
subject: Remove trailing whitespace from hand_range.py