From dd45cf8171c0ab08afa7529a3841c67c1fc01a02 Mon Sep 17 00:00:00 2001
From: Michael Merickel <michael@merickel.org>
Date: Sat, 16 Apr 2016 15:22:59 -0500
Subject: fix format string to work on py26

---
 pyramid/session.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pyramid/session.py b/pyramid/session.py
index 8e5ee8dd6..a88d8a71c 100644
--- a/pyramid/session.py
+++ b/pyramid/session.py
@@ -192,7 +192,7 @@ def check_csrf_origin(request, trusted_origins=None, raises=True):
         if not any(is_same_domain(originp.netloc, host)
                    for host in trusted_origins):
             reason = (
-                "Referer checking failed - {} does not match any trusted "
+                "Referer checking failed - {0} does not match any trusted "
                 "origins."
             )
             return _fail(reason.format(origin))
-- 
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