{"id":3640,"library":"mypy-boto3-migrationhubstrategy","title":"mypy-boto3-migrationhubstrategy: Type Annotations for AWS Migration Hub Strategy Recommendations","description":"mypy-boto3-migrationhubstrategy provides type annotations for the `boto3` AWS SDK's Migration Hub Strategy Recommendations service. It offers static type checking and improved IDE autocompletion for `boto3` users, ensuring code correctness and developer efficiency. The library is currently at version 1.42.3 and follows a frequent release cadence, often aligning with `boto3` updates and new AWS service features. It is generated by `mypy-boto3-builder`.","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","stubs","cloud","migrationhubstrategy","static analysis"],"install":[{"cmd":"pip install boto3 mypy-boto3-migrationhubstrategy","lang":"bash","label":"Install with pip"}],"dependencies":[{"reason":"Runtime dependency for AWS SDK functionality.","package":"boto3","optional":false}],"imports":[{"note":"Import the specific client type for type hinting from the service-specific stub package.","symbol":"MigrationHubStrategyRecommendationsClient","correct":"from mypy_boto3_migrationhubstrategy.client import MigrationHubStrategyRecommendationsClient"},{"note":"Import specific TypeDefs for response and request structures for more granular type checking.","symbol":"ListApplicationComponentsResponseTypeDef","correct":"from mypy_boto3_migrationhubstrategy.type_defs import ListApplicationComponentsResponseTypeDef"},{"note":"Without explicit type annotation, type checkers like MyPy cannot fully infer the client's methods and attributes, limiting autocompletion and static analysis.","wrong":"import boto3\n\nclient = boto3.client(\"migrationhubstrategy\")","symbol":"boto3.client","correct":"import boto3\nfrom mypy_boto3_migrationhubstrategy.client import MigrationHubStrategyRecommendationsClient\n\nclient: MigrationHubStrategyRecommendationsClient = boto3.client(\"migrationhubstrategy\")"}],"quickstart":{"code":"import boto3\nimport os\nfrom mypy_boto3_migrationhubstrategy.client import MigrationHubStrategyRecommendationsClient\nfrom mypy_boto3_migrationhubstrategy.type_defs import ListApplicationComponentsResponseTypeDef\n\ndef get_application_components() -> ListApplicationComponentsResponseTypeDef:\n    # Ensure AWS credentials are configured (e.g., via environment variables, ~/.aws/credentials)\n    # For this example, we assume valid credentials are set up in the environment.\n    # client: MigrationHubStrategyRecommendationsClient = boto3.client(\n    #     \"migrationhubstrategy\", \n    #     region_name=os.environ.get(\"AWS_REGION\", \"us-east-1\")\n    # )\n    # The above is correct, but for a runnable quickstart focusing on *typing*,\n    # a minimal client creation is better without requiring full AWS setup for execution.\n    # In a real application, you'd configure region, credentials, etc. appropriately.\n    \n    # Explicitly type the client for static analysis benefits\n    client: MigrationHubStrategyRecommendationsClient = boto3.client(\"migrationhubstrategy\")\n    \n    # Example API call with type-hinted response\n    response: ListApplicationComponentsResponseTypeDef = client.list_application_components()\n    \n    print(f\"Found {len(response.get('applicationComponentInfos', []))} application components.\")\n    for component in response.get('applicationComponentInfos', []):\n        print(f\"- {component.get('applicationComponentId')}: {component.get('applicationComponentName')}\")\n    \n    return response\n\nif __name__ == \"__main__\":\n    # This part requires actual AWS credentials for a successful run.\n    # You might need to set AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_REGION\n    # in your environment for this to execute without credential errors.\n    try:\n        get_application_components()\n    except Exception as e:\n        print(f\"An error occurred: {e}. Please ensure AWS credentials are configured.\")","lang":"python","description":"This quickstart demonstrates how to initialize the Migration Hub Strategy Recommendations client with type annotations and make a basic API call. It explicitly types the `boto3` client and the API response, enabling static type checking and enhanced IDE features. The code requires `boto3` and AWS credentials to run successfully."},"warnings":[{"fix":"Upgrade your Python environment to version 3.9 or newer.","message":"Support for Python 3.8 was removed in `mypy-boto3-builder` version 8.12.0. Users on Python 3.8 or older must upgrade their Python environment to 3.9 or newer to continue receiving updates for `mypy-boto3-*` packages, including `mypy-boto3-migrationhubstrategy`.","severity":"breaking","affected_versions":"mypy-boto3-builder >= 8.12.0 (affecting all generated stubs)"},{"fix":"Always add explicit type annotations to your `boto3` client and resource objects, like `client: MigrationHubStrategyRecommendationsClient = session.client(\"migrationhubstrategy\")`.","message":"When using standalone `mypy-boto3-*` packages, explicit type annotations are recommended for `boto3.client` or `session.client` calls (e.g., `client: MigrationHubStrategyRecommendationsClient = boto3.client(...)`). While type checkers might infer some types, explicit annotations ensure full autocompletion and static analysis benefits, especially when not using the larger `boto3-stubs` or `boto3-stubs-lite` packages.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Update your code to reflect the new, shorter `TypeDef` names. Review your type imports and usages from `mypy_boto3_migrationhubstrategy.type_defs`.","message":"`mypy-boto3-builder` version 8.9.0 introduced breaking changes to `TypeDef` naming conventions (e.g., `CreateDistributionRequestRequestTypeDef` became `CreateDistributionRequestTypeDef`). If your code directly references these generated type definitions from older stub versions, it may break upon upgrade.","severity":"breaking","affected_versions":"mypy-boto3-builder >= 8.9.0 (affecting all generated stubs)"},{"fix":"Ensure your `mypy` configuration correctly discovers installed packages. Remove any redundant `MYPYPATH` entries that might interfere with PEP 561-compliant stub discovery.","message":"As of `mypy-boto3-builder` 8.12.0, all generated packages have migrated to PEP 561, meaning stub files are now correctly located by type checkers without special configuration. If you previously relied on `MYPYPATH` to point to manually managed stub directories, this configuration might no longer be necessary or could behave unexpectedly.","severity":"gotcha","affected_versions":"mypy-boto3-builder >= 8.12.0 (affecting all generated stubs)"},{"fix":"Consider installing `boto3-stubs-lite` or the lite version of the service stub if you experience performance problems in PyCharm. Alternatively, disable PyCharm's internal type checker and rely solely on `mypy`.","message":"PyCharm users may experience performance issues or high CPU usage due to how PyCharm handles `Literal` overloads in type annotations. The `mypy-boto3` project itself recommends using `boto3-stubs-lite` (or the equivalent service-specific lite package, if available) as a workaround until this PyCharm issue (PY-40997) is resolved.","severity":"gotcha","affected_versions":"All versions when used with PyCharm"}],"env_vars":null,"last_verified":"2026-04-11T00:00:00.000Z","next_check":"2026-07-10T00:00:00.000Z"}