From 2d9f5f906c46eaf37f441cad52274e0f00152273 Mon Sep 17 00:00:00 2001
From: Adam Grant <adam.jgrant@gmail.com>
Date: Mon, 17 Nov 2014 17:21:47 -0800
Subject: [PATCH] Update error re-raising to use a more Python 2/3 compatible
 version.

---
 rest_framework/request.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/rest_framework/request.py b/rest_framework/request.py
index 84ac9183c..281a43956 100644
--- a/rest_framework/request.py
+++ b/rest_framework/request.py
@@ -12,11 +12,13 @@ from __future__ import unicode_literals
 from django.conf import settings
 from django.http import QueryDict
 from django.http.multipartparser import parse_header
+from django.utils import six
 from django.utils.datastructures import MultiValueDict
 from rest_framework import HTTP_HEADER_ENCODING
 from rest_framework import exceptions
 from rest_framework.compat import BytesIO
 from rest_framework.settings import api_settings
+import sys
 
 
 def is_form_media_type(media_type):
@@ -226,7 +228,7 @@ class Request(object):
             try:
                 self._authenticate()
             except AttributeError as error:
-                raise RuntimeError("AttributeError: " + error.message)
+                six.reraise(RuntimeError, "AttributeError: " + str(error), sys.exc_info()[2])
         return self._user
 
     @user.setter