Python Add the Amazon Neptune Python follow (#7473)

* add python neptune follow

Author: scmacdon

.doc_gen/metadata/neptune_metadata.yaml

@@ -5,6 +5,14 @@ neptune_Hello:
   synopsis: get started using &neptune;.
   category: Hello
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.hello.main
     Java:
       versions:
         - sdk_version: 2
@@ -18,6 +26,14 @@ neptune_Hello:
     neptune: {DescribeDBClustersPaginator}
 neptune_ExecuteQuery:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.graph.execute.main
     Java:
       versions:
         - sdk_version: 2
@@ -31,6 +47,14 @@ neptune_ExecuteQuery:
     neptune: {ExecuteQuery}
 neptune_CreateGraph:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.graph.create.main
     Java:
       versions:
         - sdk_version: 2
@@ -44,6 +68,14 @@ neptune_CreateGraph:
     neptune: {CreateGraph}
 neptune_ExecuteOpenCypherExplainQuery:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.data.query.opencypher.main
     Java:
       versions:
         - sdk_version: 2
@@ -57,6 +89,14 @@ neptune_ExecuteOpenCypherExplainQuery:
     neptune: {ExecuteOpenCypherExplainQuery}
 neptune_ExecuteGremlinProfileQuery:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.data.query.gremlin.main
     Java:
       versions:
         - sdk_version: 2
@@ -70,6 +110,14 @@ neptune_ExecuteGremlinProfileQuery:
     neptune: {ExecuteGremlinProfileQuery}
 neptune_ExecuteGremlinQuery:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.data.query.gremlin.profile.main
     Java:
       versions:
         - sdk_version: 2
@@ -83,6 +131,14 @@ neptune_ExecuteGremlinQuery:
     neptune: {ExecuteGremlinQuery}
 neptune_DeleteDBSubnetGroup:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.delete.subnet.group.main
     Java:
       versions:
         - sdk_version: 2
@@ -96,6 +152,14 @@ neptune_DeleteDBSubnetGroup:
     neptune: {DeleteDBSubnetGroup}
 neptune_DeleteDBCluster:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.delete.cluster.main
     Java:
       versions:
         - sdk_version: 2
@@ -109,6 +173,14 @@ neptune_DeleteDBCluster:
     neptune: {DeleteDBCluster}
 neptune_DeleteDBInstance:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.delete.instance.main
     Java:
       versions:
         - sdk_version: 2
@@ -122,6 +194,14 @@ neptune_DeleteDBInstance:
     neptune: {DeleteDBInstance}
 neptune_StartDBCluster:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.start.cluster.main
     Java:
       versions:
         - sdk_version: 2
@@ -135,6 +215,14 @@ neptune_StartDBCluster:
     neptune: {StartDBCluster}
 neptune_StopDBCluster:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.stop.cluster.main
     Java:
       versions:
         - sdk_version: 2
@@ -148,6 +236,14 @@ neptune_StopDBCluster:
     neptune: {StopDBCluster} 
 neptune_DescribeDBClusters:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.describe.cluster.main
     Java:
       versions:
         - sdk_version: 2
@@ -161,6 +257,14 @@ neptune_DescribeDBClusters:
     neptune: {DescribeDBClusters}
 neptune_DescribeDBInstances:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.describe.dbinstance.main
     Java:
       versions:
         - sdk_version: 2
@@ -174,6 +278,14 @@ neptune_DescribeDBInstances:
     neptune: {DescribeDBInstances} 
 neptune_CreateDBInstance:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.create.dbinstance.main
     Java:
       versions:
         - sdk_version: 2
@@ -187,6 +299,14 @@ neptune_CreateDBInstance:
     neptune: {CreateDBInstance} 
 neptune_CreateDBCluster:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.create.cluster.main
     Java:
       versions:
         - sdk_version: 2
@@ -200,6 +320,14 @@ neptune_CreateDBCluster:
     neptune: {CreateDBCluster}  
 neptune_CreateDBSubnetGroup:
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.create.subnet.main
     Java:
       versions:
         - sdk_version: 2
@@ -223,6 +351,14 @@ neptune_Scenario:
     - Delete the &neptune; Assets.
   category: Basics
   languages:
+    Python:
+      versions:
+        - sdk_version: 3
+          github: python/example_code/neptune
+          excerpts:
+            - description:
+              snippet_tags:
+                - neptune.python.scenario.main
     Java:
       versions:
         - sdk_version: 2

python/example_code/neptune/README.md

@@ -0,0 +1,142 @@
+# Neptune code examples for the SDK for Python
+
+## Overview
+
+Shows how to use the AWS SDK for Python (Boto3) to work with Amazon Neptune.
+
+<!--custom.overview.start-->
+<!--custom.overview.end-->
+
+_Neptune is a serverless graph database designed for superior scalability and availability._
+
+## ⚠ Important
+
+* Running this code might result in charges to your AWS account. For more details, see [AWS Pricing](https://aws.amazon.com/pricing/) and [Free Tier](https://aws.amazon.com/free/).
+* Running the tests might result in charges to your AWS account.
+* We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see [Grant least privilege](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#grant-least-privilege).
+* This code is not tested in every AWS Region. For more information, see [AWS Regional Services](https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services).
+
+<!--custom.important.start-->
+<!--custom.important.end-->
+
+## Code examples
+
+### Prerequisites
+
+For prerequisites, see the [README](../../README.md#Prerequisites) in the `python` folder.
+
+Install the packages required by these examples by running the following in a virtual environment:
+
+```
+python -m pip install -r requirements.txt
+```
+
+<!--custom.prerequisites.start-->
+<!--custom.prerequisites.end-->
+
+### Get started
+
+- [Hello Neptune](HelloNeptune.py#L4) (`DescribeDBClustersPaginator`)
+
+
+### Basics
+
+Code examples that show you how to perform the essential operations within a service.
+
+- [Learn the basics](NeptuneScenario.py)
+
+
+### Single actions
+
+Code excerpts that show you how to call individual service functions.
+
+- [CreateDBCluster](NeptuneScenario.py#L288)
+- [CreateDBInstance](NeptuneScenario.py#L269)
+- [CreateDBSubnetGroup](NeptuneScenario.py#L335)
+- [CreateGraph](analytics/CreateNeptuneGraphExample.py#L7)
+- [DeleteDBCluster](NeptuneScenario.py#L14)
+- [DeleteDBInstance](NeptuneScenario.py#L77)
+- [DeleteDBSubnetGroup](NeptuneScenario.py#L95)
+- [DescribeDBClusters](NeptuneScenario.py#L203)
+- [DescribeDBInstances](NeptuneScenario.py#L242)
+- [ExecuteGremlinProfileQuery](database/NeptuneGremlinQueryExample.py#L22)
+- [ExecuteGremlinQuery](database/NeptuneGremlinExplainAndProfileExample.py#L8)
+- [ExecuteOpenCypherExplainQuery](database/OpenCypherExplainExample.py#L22)
+- [ExecuteQuery](analytics/NeptuneAnalyticsQueryExample.py#L7)
+- [StartDBCluster](NeptuneScenario.py#L161)
+- [StopDBCluster](NeptuneScenario.py#L183)
+
+
+<!--custom.examples.start-->
+<!--custom.examples.end-->
+
+## Run the examples
+
+### Instructions
+
+
+<!--custom.instructions.start-->
+<!--custom.instructions.end-->
+
+#### Hello Neptune
+
+This example shows you how to get started using Neptune.
+
+```
+python HelloNeptune.py
+```
+
+#### Learn the basics
+
+This example shows you how to do the following:
+
+- Create an Amazon Neptune Subnet Group.
+- Create an Neptune Cluster.
+- Create an Neptune Instance.
+- Check the status of the Neptune Instance.
+- Show Neptune cluster details.
+- Stop the Neptune cluster.
+- Start the Neptune cluster.
+- Delete the Neptune Assets.
+
+<!--custom.basic_prereqs.neptune_Scenario.start-->
+<!--custom.basic_prereqs.neptune_Scenario.end-->
+
+Start the example by running the following at a command prompt:
+
+```
+python NeptuneScenario.py
+```
+
+
+<!--custom.basics.neptune_Scenario.start-->
+<!--custom.basics.neptune_Scenario.end-->
+
+
+### Tests
+
+⚠ Running tests might result in charges to your AWS account.
+
+
+To find instructions for running these tests, see the [README](../../README.md#Tests)
+in the `python` folder.
+
+
+
+<!--custom.tests.start-->
+<!--custom.tests.end-->
+
+## Additional resources
+
+- [Neptune User Guide](https://docs.aws.amazon.com/neptune/latest/userguide/intro.html)
+- [Neptune API Reference](https://docs.aws.amazon.com/neptune/latest/apiref/Welcome.html)
+- [SDK for Python Neptune reference](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/iam.html)
+
+<!--custom.resources.start-->
+<!--custom.resources.end-->
+
+---
+
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0