From 120fb4adeb957a348f01bf60e821b2dcab2f9de1 Mon Sep 17 00:00:00 2001
From: Konstantin Lopuhin <kostia.lopuhin@gmail.com>
Date: Mon, 18 Jan 2016 19:00:40 +0300
Subject: [PATCH] revert bogus change

---
 scrapy/http/response/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scrapy/http/response/__init__.py b/scrapy/http/response/__init__.py
index 59ef15682..09c4e725a 100644
--- a/scrapy/http/response/__init__.py
+++ b/scrapy/http/response/__init__.py
@@ -35,7 +35,7 @@ class Response(object_ref):
         return self._url
 
     def _set_url(self, url):
-        if isinstance(url, six.string_types):
+        if isinstance(url, str):
             self._url = url
         else:
             raise TypeError('%s url must be str, got %s:' % (type(self).__name__,