# HG changeset patch
# User Luke Bakken <luke@bakken.io>
# Date 1536933256 25200
#      Fri Sep 14 06:54:16 2018 -0700
# Node ID 563618f55e81354826b97a921a31d0f7ce56a2b2
# Parent  37366c634f19a8fce6d65c3f5da5ca298349e550
Ensure that mis-passed tuples are formatted correctly

Fixes pika/pika#1116

diff --git a/pika/adapters/base_connection.py b/pika/adapters/base_connection.py
--- a/pika/adapters/base_connection.py
+++ b/pika/adapters/base_connection.py
@@ -57,7 +57,7 @@
         """
         if parameters and not isinstance(parameters, connection.Parameters):
             raise ValueError(
-                'Expected instance of Parameters, not %r' % parameters)
+                'Expected instance of Parameters, not %r' % (parameters,))
 
         # Let the developer know we could not import SSL
         if parameters and parameters.ssl and not ssl: