Reassign to boto3_session instead of inlined expression

Author: ericbn

aws_lambda_powertools/utilities/idempotency/persistence/dynamodb.py

@@ -91,7 +91,8 @@ def __init__(
             >>>     return {"StatusCode": 200}
         """
         if boto3_client is None:
-            boto3_client = (boto3_session or boto3.session.Session()).client("dynamodb", config=boto_config)
+            boto3_session = boto3_session or boto3.session.Session()
+            boto3_client = boto3_session.client("dynamodb", config=boto_config)
         self.client = boto3_client
 
         user_agent.register_feature_to_client(client=self.client, feature="idempotency")

aws_lambda_powertools/utilities/parameters/appconfig.py

@@ -79,7 +79,8 @@ def __init__(
         Initialize the App Config client
         """
         if boto3_client is None:
-            boto3_client = (boto3_session or boto3.session.Session()).client("appconfigdata", config=config)
+            boto3_session = boto3_session or boto3.session.Session()
+            boto3_client = boto3_session.client("appconfigdata", config=config)
         self.client = boto3_client
 
         self.application = resolve_env_var_choice(

aws_lambda_powertools/utilities/parameters/secrets.py

@@ -85,7 +85,8 @@ def __init__(
         Initialize the Secrets Manager client
         """
         if boto3_client is None:
-            boto3_client = (boto3_session or boto3.session.Session()).client("secretsmanager", config=config)
+            boto3_session = boto3_session or boto3.session.Session()
+            boto3_client = boto3_session.client("secretsmanager", config=config)
         self.client = boto3_client
 
         super().__init__(client=self.client)

aws_lambda_powertools/utilities/parameters/ssm.py

@@ -115,7 +115,8 @@ def __init__(
         Initialize the SSM Parameter Store client
         """
         if boto3_client is None:
-            boto3_client = (boto3_session or boto3.session.Session()).client("ssm", config=config)
+            boto3_session = boto3_session or boto3.session.Session()
+            boto3_client = boto3_session.client("ssm", config=config)
         self.client = boto3_client
 
         super().__init__(client=self.client)

examples/idempotency/src/bring_your_own_persistent_store.py

@@ -27,7 +27,8 @@ def __init__(
         boto_config: Optional[Config] = None,
         boto3_session: Optional[boto3.session.Session] = None,
     ):
-        self._ddb_resource = (boto3_session or boto3.session.Session()).resource("dynamodb", config=boto_config)
+        boto3_session = boto3_session or boto3.session.Session()
+        self._ddb_resource = boto3_session.resource("dynamodb", config=boto_config)
         self.table_name = table_name
         self.table = self._ddb_resource.Table(self.table_name)
         self.key_attr = key_attr