old_contents: __author__ = 'Matt Dennewitz'
  __version__ = (1, 0, 0)
  
  
  from hash_ring import HashRing, HASH_RING_OK, HASH_RING_ERR
  
  
new_contents: __author__ = 'Matt Dennewitz'
  __version__ = (1, 0, 0)
  
  
  from hash_ring import (
      HashRing,
      HASH_RING_OK, HASH_RING_ERR,
      HASH_FUNCTION_MD5, HASH_FUNCTION_SHA1
  )
  
  
subject: add hash functions to import