Use comparisons instead of xrange, until python 3 when it should be more efficent

cloudinit/url_helper.py

@@ -59,10 +59,13 @@ class UrlResponse(object):
             return str(self.contents)
 
     def ok(self, redirects_ok=False):
+        upper = 300
         if redirects_ok:
-            return self.code in xrange(200, 400)
+            upper = 400
+        if self.code >= 200 and self.code < upper:
+            return True
         else:
-            return self.code in xrange(200, 300)
+            return False
     
 
 def readurl(url, data=None, timeout=None,