old_contents: from btcturk_client.client import Btcturk
  
  _btcturk = Btcturk("publickey", "privkey")
  
  print _btcturk.balance()
new_contents: from btcturk_client.client import Btcturk
  
  _btcturk = Btcturk("publicKey", "privateKey")
  
  print _btcturk.balance()
subject: update example