rolled in review comments

Author: scmacdon

python/example_code/neptune/HelloNeptune.py

@@ -21,14 +21,13 @@
 """
 
 GRAPH_NAME = "sample-analytics-graph"
-REGION = "us-east-1"
 
 def main():
     """
     Main entry point: create NeptuneGraph client and call graph creation.
     """
     # Hypothetical client - boto3 currently doesn't have NeptuneGraph client, so replace with actual client if available
-    neptune_graph_client = boto3.client("neptune", region_name=REGION)
+    neptune_graph_client = boto3.client("neptune")
 
     execute_create_graph(neptune_graph_client, GRAPH_NAME)
 

python/example_code/neptune/analytics/CreateNeptuneGraphExample.py renamed to python/example_code/neptune/analytics/create_neptune_graph_example.py

@@ -22,13 +22,11 @@
 
 NEPTUNE_ANALYTICS_ENDPOINT = "https://<your-neptune-analytics-endpoint>:8182"
 GRAPH_ID = "<your-graph-id>"
-REGION = "us-east-1"
 
 def main():
     # Build the boto3 client for neptune-graph with endpoint override
     client = boto3.client(
         "neptune-graph",
-        region_name=REGION,
         endpoint_url=NEPTUNE_ANALYTICS_ENDPOINT
     )
 

python/example_code/neptune/analytics/NeptuneAnalyticsQueryExample.py renamed to python/example_code/neptune/analytics/neptune_analytics_query_example.py

@@ -32,7 +32,6 @@ def main():
 
     neptune_client = boto3.client(
         "neptunedata",
-        region_name="us-east-1",
         endpoint_url=NEPTUNE_ENDPOINT,
         config=config
     )

python/example_code/neptune/database/GremlinProfileQueryExample.py renamed to python/example_code/neptune/database/gremlin_profile_query_example.py

@@ -30,7 +30,6 @@ def main():
 
     neptune_client = boto3.client(
         "neptunedata",
-        region_name="us-east-1",
         endpoint_url=NEPTUNE_ENDPOINT,
         config=config
     )

python/example_code/neptune/database/NeptuneGremlinExplainAndProfileExample.py renamed to python/example_code/neptune/database/neptune_gremlin_explain_and_profile_example.py

@@ -31,7 +31,6 @@ def main():
 
     neptune_client = boto3.client(
         "neptunedata",
-        region_name="us-east-1",
         endpoint_url=NEPTUNE_ENDPOINT,
         config=config
     )

python/example_code/neptune/database/NeptuneGremlinQueryExample.py renamed to python/example_code/neptune/database/neptune_gremlin_query_example.py

@@ -0,0 +1,53 @@
+# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+# snippet-start:[neptune.python.hello.main]
+import boto3
+from botocore.exceptions import ClientError
+
+
+def describe_db_clusters(neptune_client):
+    """
+    Describes the Amazon Neptune DB clusters using a paginator to handle multiple pages.
+    Raises ClientError with 'ResourceNotFoundException' if no clusters are found.
+    """
+    paginator = neptune_client.get_paginator("describe_db_clusters")
+    clusters_found = False
+
+    for page in paginator.paginate():
+        for cluster in page.get("DBClusters", []):
+            clusters_found = True
+            print(f"Cluster Identifier: {cluster['DBClusterIdentifier']}")
+            print(f"Status: {cluster['Status']}")
+
+    if not clusters_found:
+        raise ClientError(
+            {
+                "Error": {
+                    "Code": "ResourceNotFoundException",
+                    "Message": "No Neptune DB clusters found."
+                }
+            },
+            operation_name="DescribeDBClusters"
+        )
+
+def main():
+    """
+    Main entry point: creates the Neptune client and calls the describe operation.
+    """
+    neptune_client = boto3.client("neptune")
+    try:
+        describe_db_clusters(neptune_client)
+    except ClientError as e:
+        error_code = e.response["Error"]["Code"]
+        if error_code == "ResourceNotFoundException":
+            print(f"Resource not found: {e.response['Error']['Message']}")
+        else:
+            print(f"Unexpected ClientError: {e.response['Error']['Message']}")
+    except Exception as e:
+        print(f"Unexpected error: {str(e)}")
+
+if __name__ == "__main__":
+    main()
+
+# snippet-end:[neptune.python.hello.main]

python/example_code/neptune/database/OpenCypherExplainExample.py renamed to python/example_code/neptune/database/open_cypher_explain_example.py

@@ -14,7 +14,6 @@
 # snippet-start:[neptune.python.delete.cluster.main]
 from botocore.exceptions import ClientError
 
-
 def delete_db_cluster(neptune_client, cluster_id: str):
     """
     Deletes a Neptune DB cluster and throws exceptions to the caller.

python/example_code/neptune/hello_neptune.py

@@ -1,7 +1,7 @@
 import pytest
 from unittest.mock import MagicMock
 from botocore.exceptions import ClientError, BotoCoreError
-from analytics.CreateNeptuneGraphExample import execute_create_graph  # Adjust import based on your file structure
+from analytics.create_neptune_graph_example import execute_create_graph  # Adjust import based on your file structure
 
 
 def test_execute_create_graph(capfd):