text: from electrum.util import print_msg, print_error, raw_input
  
  class CmdLineHandler:
  
      def get_passphrase(self, msg, confirm):
          import getpass
          print_msg(msg)
          return getpass.getpass('')
  
      def get_pin(self, msg):
          t = { 'a':'7', 'b':'8', 'c':'9', 'd':'4', 'e':'5', 'f':'6', 'g':'1', 'h':'2', 'i':'3'}
          print_msg(msg)
          print_msg("a b c\nd e f\ng h i\n-----")
          o = raw_input()
          return ''.join(map(lambda x: t[x], o))
  
      def prompt_auth(self, msg):
          import getpass
          print_msg(msg)
          response = getpass.getpass('')
          if len(response) == 0:
              return None
          return response
  
      def yes_no_question(self, msg):
          print_msg(msg)
          return raw_input() in 'yY'
  
      def stop(self):
          pass
  
      def show_message(self, msg, on_cancel=None):
          print_msg(msg)
  
      def update_status(self, b):
          print_error('trezor status', b)
  
      def finished(self):
          pass
  