old_contents: from __future__ import unicode_literals
  from ...vocab import Vocab
  from ...tokens.doc import Doc
  
  
  def test_token_is_hashable():
      doc = Doc(Vocab(), ['hello', 'world'])
      token = doc[0]
      s = set([token])
      items = list(s)
      assert items[0] is token
  
new_contents: # coding: utf8
  from __future__ import unicode_literals
  from ...vocab import Vocab
  from ...tokens.doc import Doc
  
  
  def test_token_is_hashable():
      doc = Doc(Vocab(), ['hello', 'world'])
      token = doc[0]
      s = set([token])
      items = list(s)
      assert items[0] is token
  
subject: Add missing unicode declaration