def get_identifier(self, request):
        """
        Provides a unique string identifier for the requestor.

        This implementation returns a combination of IP address and hostname.
        """
        try:
            return request._authentication_backend.get_identifier(request)
        except __HOLE__:
            return 'nouser'
dataset/ETHPy150Open django-tastypie/django-tastypie/tastypie/authentication.py/MultiAuthentication.get_identifier