From 2195845fd10f35e967433bbcb2fe62f159d3cdbd Mon Sep 17 00:00:00 2001
From: Pavlo Shchelokovskyy <shchelokovskyy@gmail.com>
Date: Mon, 31 Jul 2017 15:59:43 +0300
Subject: [PATCH] Fix exception message in adapter loading

string formatting variable was missing

Change-Id: I74b614048a1a1fe00ca14fb0313a760909a068ce
---
 keystoneauth1/loading/adapter.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/keystoneauth1/loading/adapter.py b/keystoneauth1/loading/adapter.py
index ccd70398..a46f1d2e 100644
--- a/keystoneauth1/loading/adapter.py
+++ b/keystoneauth1/loading/adapter.py
@@ -177,7 +177,8 @@ class Adapter(base.BaseLoader):
                 if iface not in ('public', 'internal', 'admin'):
                     raise TypeError("'{iface}' is not a valid value for"
                                     " valid_interfaces. Valid valies are"
-                                    " public, internal or admin")
+                                    " public, internal or admin".format(
+                                        iface=iface))
             kwargs.setdefault('interface', c.valid_interfaces)
         else:
             kwargs.setdefault('interface', c.interface)