Fix KeySerializerError creation

rnpridgeon · rnpridgeon · commit 5011edddd271 · 2019-01-04T22:49:07.000-05:00
diff --git a/confluent_kafka/avro/serializer/__init__.py b/confluent_kafka/avro/serializer/__init__.py
@@ -61,7 +61,8 @@ def __str__(self):
 
 
 class KeySerializerError(SerializerError):
-    pass
+    def __new__(cls, message):
+        return super(KeySerializerError, cls).__new__(SerializerError, message, True)
 
 
 class ValueSerializerError(SerializerError):
