fix

python/rocketmq/simple_subscription_settings.py

@@ -17,6 +17,7 @@
 
 from google.protobuf.duration_pb2 import Duration
 from rocketmq.filter_expression import ExpressionType
+from rocketmq.filter_expression import FilterExpression
 from rocketmq.log import logger
 from rocketmq.protocol.definition_pb2 import \
     FilterExpression as ProtoFilterExpression
@@ -30,13 +31,6 @@
 from .settings import ClientType, ClientTypeHelper, Settings
 
 
-# Assuming a simple representation of FilterExpression for the purpose of this example
-class FilterExpression:
-    def __init__(self, type, expression):
-        self.type = type
-        self.Expression = expression
-
-
 class SimpleSubscriptionSettings(Settings):
 
     def __init__(self, clientId, endpoints, consumerGroup, requestTimeout, longPollingTimeout,