old_contents: #!/usr/bin/python
  
  def get_secret_for_user(user, ipparam):
      print "Looking up user %s with ipparam %s" % (user, ipparam)
      return "user_secret"
  
  def allowed_address_hook(ip):
      return True
  
  def chap_check_hook():
      return True
  
  def ip_up_notifier(ifname, ouraddr, hisaddr):
      print "ip_up_notifier"
  
  def ip_down_notifier(arg):
      print "ip_down_notifier"
  
  def auth_up_notifier(arg):
      print "auth_up_notifier"
  
  def link_down_notifier(arg):
      print "link_down_notifier"
  
new_contents: #!/usr/bin/env python
  
  def get_secret_for_user(user, ipparam):
      print("Looking up user %s with ipparam %s" % (user, ipparam))
      return "user_secret"
  
  def allowed_address_hook(ip):
      return True
  
  def chap_check_hook():
      return True
  
  def ip_up_notifier(ifname, localip, remoteip):
      print("ip_up_notifier")
  
  def ip_down_notifier(arg):
      print("ip_down_notifier")
  
  def auth_up_notifier(arg):
      print("auth_up_notifier")
  
  def link_down_notifier(arg):
      print("link_down_notifier")
  
subject: Fix print statements for Python 3