update docs

languages/python/example/README.md

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 # Python Parameter Store Lambda Extension Example
 
 This directory contains an example [CDK Stack] with a lambda function that utilizes the [Parameter Store Lambda Extension]().
+
+## Requirements
+
+- Node.js >= 12
+
+If you want to run the `handler` locally, you will also need:
+
+- Python
+
+## Deploy
+
+To deploy the example into your account run the following:
+
+```bash
+$ cd infrastructure && npx cdk deploy
+```