{"id":3135,"library":"mypy-boto3-s3tables","title":"mypy-boto3-s3tables Type Annotations","description":"mypy-boto3-s3tables provides type annotations for the `boto3` AWS SDK's S3Tables service. Generated by `mypy-boto3-builder`, it enhances developer experience by enabling static type checking with tools like MyPy and improving IDE features such as autocompletion and error detection for `boto3` calls. The package versions are synchronized with `boto3` releases, ensuring a regular and active update cadence.","status":"active","version":"1.42.80","language":"en","source_language":"en","source_url":"https://github.com/youtype/mypy_boto3_builder","tags":["aws","boto3","mypy","type-hints","stubs","s3tables","static-analysis"],"install":[{"cmd":"pip install mypy-boto3-s3tables boto3 mypy","lang":"bash","label":"Install standalone package with boto3 and mypy"},{"cmd":"pip install 'boto3-stubs[s3tables]' boto3 mypy","lang":"bash","label":"Install as an extra for boto3-stubs"}],"dependencies":[{"reason":"Provides the AWS SDK for which type annotations are generated.","package":"boto3"},{"reason":"Static type checker that consumes these annotations for analysis.","package":"mypy"},{"reason":"Provides backported typing features for older Python versions, often a transitive dependency.","package":"typing-extensions","optional":true}],"imports":[{"note":"Type stubs are imported from the `mypy_boto3_s3tables` package, not directly from `boto3`.","wrong":"from boto3.client import S3TablesClient","symbol":"S3TablesClient","correct":"from mypy_boto3_s3tables.client import S3TablesClient"},{"note":"Import specific TypedDicts for precise type checking of request and response structures.","symbol":"CreateNamespaceRequestTypeDef","correct":"from mypy_boto3_s3tables.type_defs import CreateNamespaceRequestTypeDef"}],"quickstart":{"code":"from typing import TYPE_CHECKING\nimport boto3\nfrom boto3.session import Session\n\nif TYPE_CHECKING:\n    from mypy_boto3_s3tables.client import S3TablesClient\n    from mypy_boto3_s3tables.type_defs import ListNamespacesOutputTypeDef\n\ndef get_s3tables_client() -> 'S3TablesClient':\n    \"\"\"Initializes and returns a type-hinted S3Tables client.\"\"\"\n    session: Session = boto3.session.Session()\n    client: S3TablesClient = session.client('s3tables')\n    return client\n\ndef list_s3tables_namespaces() -> None:\n    \"\"\"Lists S3Tables namespaces with type checking.\"\"\"\n    client = get_s3tables_client()\n    \n    # Use a dummy list for illustration, as actual AWS calls require credentials\n    # If you have AWS credentials configured, uncomment the line below:\n    # response: ListNamespacesOutputTypeDef = client.list_namespaces()\n    \n    # Example with a mock response for type checking demonstration:\n    response: ListNamespacesOutputTypeDef = {\n        'namespaces': [\n            {'namespaceArn': 'arn:aws:s3tables:REGION:ACCOUNT:namespace/example1', 'namespaceName': 'example1'},\n            {'namespaceArn': 'arn:aws:s3tables:REGION:ACCOUNT:namespace/example2', 'namespaceName': 'example2'}\n        ],\n        'ResponseMetadata': {\n            'RequestId': 'example-request-id',\n            'HTTPStatusCode': 200,\n            'HTTPHeaders': {},\n            'RetryAttempts': 0\n        }\n    }\n    \n    for namespace in response['namespaces']:\n        print(f\"Namespace ARN: {namespace['namespaceArn']}, Name: {namespace['namespaceName']}\")\n\nif __name__ == \"__main__\":\n    list_s3tables_namespaces()","lang":"python","description":"This quickstart demonstrates how to obtain a type-hinted `S3TablesClient` and use it to interact with the service, leveraging type definitions for method arguments and return values. The `if TYPE_CHECKING:` block ensures that `mypy-boto3-s3tables` is only a development dependency."},"warnings":[{"fix":"Upgrade your Python environment to 3.9 or later.","message":"Python 3.8 support has been removed as of `mypy-boto3-builder` version 8.12.0. The package now requires Python 3.9 or newer.","severity":"breaking","affected_versions":">=8.12.0 of mypy-boto3-builder and generated stubs"},{"fix":"Review and update explicit references to TypedDict names in your code.","message":"TypeDef naming conventions changed in `mypy-boto3-builder` version 8.9.0. This might affect custom code that explicitly references generated TypedDicts, for instance, `CreateDistributionRequestRequestTypeDef` became `CreateDistributionRequestTypeDef`.","severity":"breaking","affected_versions":">=8.9.0 of mypy-boto3-builder and generated stubs"},{"fix":"Ensure `boto3` and `mypy` are installed: `pip install boto3 mypy mypy-boto3-s3tables`.","message":"It's crucial to install `boto3` (the actual AWS SDK) and `mypy` (the type checker) alongside `mypy-boto3-s3tables`. Without them, the stubs will not provide runtime functionality or be utilized for static analysis.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Keep `boto3` and `mypy-boto3-s3tables` versions in sync. The stub package version reflects the compatible `boto3` version.","message":"Mismatching versions between `boto3` and `mypy-boto3-s3tables` can lead to incorrect type hints or missing methods. The stub package aims to match the corresponding `boto3` version.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Use `from typing import TYPE_CHECKING` and enclose type imports: `if TYPE_CHECKING: from mypy_boto3_s3tables.client import S3TablesClient`.","message":"To prevent `mypy-boto3-s3tables` from becoming a runtime dependency and to import only type-specific objects, wrap type imports within an `if TYPE_CHECKING:` block.","severity":"gotcha","affected_versions":"All versions"},{"fix":"Consider `pip install 'boto3-stubs-lite[s3tables]'` if encountering performance issues in PyCharm.","message":"PyCharm has known performance issues with `Literal` overloads in type stub packages. For PyCharm users, `boto3-stubs-lite` might offer a more responsive experience at the cost of requiring more explicit type annotations.","severity":"gotcha","affected_versions":"All versions with PyCharm"}],"env_vars":null,"last_verified":"2026-04-11T00:00:00.000Z","next_check":"2026-07-10T00:00:00.000Z"}