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-rw-r--r--kafka/client_async.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/kafka/client_async.py b/kafka/client_async.py
index bf395c5..cf57ef9 100644
--- a/kafka/client_async.py
+++ b/kafka/client_async.py
@@ -355,7 +355,7 @@ class KafkaClient(object):
conn = self._conns.get(node_id)
if conn is None:
- assert broker, 'Broker id %s not in current metadata' % node_id
+ assert broker, 'Broker id %s not in current metadata' % (node_id,)
log.debug("Initiating connection to node %s at %s:%s",
node_id, broker.host, broker.port)