code: def try_replace_token(authenticate, **kwargs):
      
  
      try:
          return authenticate(**kwargs)
      except errors.BinstarError as err:
          if kwargs.get('fail_if_already_exists') and len(err.args) > 1 and err.args[1] == 400:
              logger.warning('It appears you are already logged in from host %s' % socket.gethostname())
              logger.warning('Logging in again will remove the previous token. (This could cause troubles with virtual '
                             'machines with the same hostname)')
              logger.warning('Otherwise you can login again and specify a different hostname with "--hostname"')
  
              if bool_input("Would you like to continue"):
                  kwargs['fail_if_already_exists'] = False
                  return authenticate(**kwargs)
  
          raise
docs: Authenticates using the given *authenticate*, retrying if the token needs
      to be replaced.