{"id":3351,"library":"mypy-boto3-controltower","title":"Type Annotations for boto3 Control Tower","description":"mypy-boto3-controltower provides comprehensive type annotations for the `boto3` AWS Control Tower service client. It enhances the development experience by enabling static type checking with tools like `mypy` for `boto3` operations, catching potential errors at development time. This package provides stubs for `boto3` version 1.42.3 and is part of the `mypy-boto3-builder` ecosystem, which actively generates stubs for all `boto3` services. It is actively maintained with frequent updates reflecting `boto3` changes.","status":"active","version":"1.42.3","language":"en","source_language":"en","source_url":"https://github.com/youtype/mypy_boto3_builder","tags":["aws","boto3","mypy","type-hints","controltower","static-analysis"],"install":[{"cmd":"pip install mypy-boto3-controltower boto3","lang":"bash","label":"Install with boto3"}],"dependencies":[{"reason":"Runtime library for AWS SDK client operations, type hints are applied to its objects.","package":"boto3","optional":false}],"imports":[{"note":"Use this for explicit type hinting of the Control Tower client returned by boto3.client(\"controltower\").","symbol":"ControlTowerClient","correct":"from mypy_boto3_controltower.client import ControlTowerClient"},{"note":"Use this for explicit type hinting of Control Tower service response objects or method parameters.","symbol":"ListControlTowerResourcesOutputTypeDef","correct":"from mypy_boto3_controltower.type_defs import ListControlTowerResourcesOutputTypeDef"}],"quickstart":{"code":"import boto3\nfrom mypy_boto3_controltower.client import ControlTowerClient\nfrom mypy_boto3_controltower.type_defs import ListControlTowerResourcesOutputTypeDef\n\n# Get a typed client for Control Tower\n# Ensure AWS credentials are configured (e.g., via ~/.aws/credentials or environment variables)\n# For local testing, ensure your default region is set.\nclient: ControlTowerClient = boto3.client(\"controltower\")\n\n# Example: List Control Tower resources with type hints\ntry:\n    print(\"Attempting to list Control Tower resources...\")\n    response: ListControlTowerResourcesOutputTypeDef = client.list_control_tower_resources(\n        # You can add filters or pagination parameters here if needed\n        # max_results=5\n    )\n    resources = response.get('controlTowerResources', [])\n    if resources:\n        print(f\"Found {len(resources)} Control Tower resources:\")\n        for resource in resources:\n            print(f\"  - ARN: {resource.get('arn')}, Type: {resource.get('resourceType')}\")\n    else:\n        print(\"No Control Tower resources found or access is restricted.\")\nexcept client.exceptions.AccessDeniedException:\n    print(\"Access Denied: Ensure your AWS credentials have sufficient permissions for Control Tower (e.g., 'controltower:ListControlTowerResources').\")\nexcept Exception as e:\n    print(f\"An error occurred: {e}\")","lang":"python","description":"Demonstrates how to obtain a type-hinted Control Tower client and use it to list resources. This setup allows `mypy` and other type checkers to perform static analysis on your `boto3` Control Tower code, catching potential errors at development time."},"warnings":[{"fix":"Upgrade your Python environment to 3.9 or newer. If you must use Python 3.8, pin `mypy-boto3-*` packages to versions prior to 8.12.0.","message":"Support for Python 3.8 was removed starting with version 8.12.0 of `mypy-boto3-builder` (which this package is part of).","severity":"breaking","affected_versions":">=8.12.0"},{"fix":"Review and update explicit `TypeDef` imports and usage in your codebase to match the new, shorter naming conventions, especially for request/response payloads.","message":"Version 8.9.0 introduced breaking changes to `TypeDef` naming conventions across services (e.g., `CreateDistributionRequestRequestTypeDef` became `CreateDistributionRequestTypeDef` by removing redundant `Request` postfix).","severity":"breaking","affected_versions":">=8.9.0"},{"fix":"Always install `boto3` alongside `mypy-boto3-controltower`. Do not attempt to import or use `mypy_boto3_controltower` directly for runtime operations; instead, use `boto3.client('controltower')` and rely on the installed stubs for type checking.","message":"These `mypy-boto3-*` packages provide only type annotations and do not add any runtime functionality to `boto3`. They are solely for static analysis tools like `mypy`.","severity":"gotcha","affected_versions":"all"},{"fix":"Refer to the official `boto3` documentation for the most up-to-date service names and API methods. If a service name or its API changes, update your `boto3.client()` calls and potentially your `mypy-boto3-*` package version.","message":"AWS service names can change or be deprecated (e.g., `sms-voice` changed to `pinpoint-sms-voice` in a previous release). Ensure you are using the correct and current service name string for `boto3.client()`.","severity":"gotcha","affected_versions":"all"}],"env_vars":null,"last_verified":"2026-04-11T00:00:00.000Z","next_check":"2026-07-10T00:00:00.000Z"}