Type annotations for aiobotocore ECS

3.4.0 · active · verified Fri Apr 17

types-aiobotocore-ecs provides comprehensive type annotations for the `aiobotocore` client for Amazon Elastic Container Service (ECS). It enhances developer experience by enabling static type checking with tools like MyPy, catching potential errors at compile time rather than runtime. This library is part of the `types-aiobotocore` family, which offers stubs for all AWS services, and is frequently updated to align with the latest `aiobotocore` and AWS API changes.

Common errors

```
ModuleNotFoundError: No module named 'types_aiobotocore_ecs'
```
cause The `types-aiobotocore-ecs` package is not installed in your environment.

fix Run `pip install types-aiobotocore-ecs`.
```
error: TypedDict "ListClustersResponseTypeDef" has no item "clusterArns"
```
cause The type stubs for `types-aiobotocore-ecs` are out of sync with the installed `aiobotocore` version, or the AWS API has changed and your stubs are too old.

fix Ensure `aiobotocore` and `types-aiobotocore-ecs` are up-to-date and compatible. Try `pip install --upgrade aiobotocore types-aiobotocore-ecs`.
```
error: Argument "client" to "some_function" has incompatible type "Any"; expected "ECSClient"
```
cause You are passing an `aiobotocore` client to a function that expects a type-hinted `ECSClient` from `types-aiobotocore-ecs`, but the client itself hasn't been explicitly type-hinted.

fix After creating the client, add a type hint: `client = session.create_client(...)`; then `client: ECSClient`.
```
TypeError: object is not subscriptable
```
cause This can occur on older Python versions (pre-3.9) when using type hints like `list[str]` which require `from __future__ import annotations` or `collections.abc` backports.

fix Ensure you are running Python 3.9 or newer, as `types-aiobotocore-ecs` requires it. If you need to support older Python, you might need to use `typing.List[str]` explicitly (though this library itself won't support <3.9).

Warnings

breaking Support for Python 3.8 was removed in `mypy-boto3-builder` 8.12.0, which generates these type stubs. This library (types-aiobotocore-ecs 3.4.0) explicitly requires Python >=3.9.
Fix: Upgrade your Python environment to 3.9 or higher.
breaking TypeDef naming conventions changed significantly in `mypy-boto3-builder` 8.9.0. Explicitly imported TypeDefs (e.g., `CreateDistributionRequestRequestTypeDef` becoming `CreateDistributionRequestTypeDef`) might have different names.
Fix: Review your explicit TypeDef imports and update their names according to the new convention (typically shorter, or 'Extra' moved to the end if applicable).
gotcha `types-aiobotocore-ecs` provides *only* type stubs. You must also install `aiobotocore` (and potentially `aiobotocore[boto3]` or `aioboto3`) for the actual runtime functionality.
Fix: Ensure both `types-aiobotocore-ecs` and `aiobotocore` are installed (e.g., `pip install types-aiobotocore-ecs aiobotocore`).
gotcha For correct type checking, the version of `types-aiobotocore-ecs` should ideally match the major/minor version of your installed `aiobotocore` to ensure API compatibility. Mismatches can lead to incorrect type hints or missing attributes.
Fix: Keep `types-aiobotocore-ecs` and `aiobotocore` updated, or ensure their versions are compatible. The `types-aiobotocore-ecs` version (e.g., `3.4.0`) is typically derived from `aiobotocore`'s major.minor version (e.g., `2.13.0` -> `types-aiobotocore-2.13.0.post*`).

Install

pip install types-aiobotocore-ecs aiobotocore Install library and peer dependency

Imports

ECSClient
wrong:
```
from aiobotocore.client import Client
```
correct:
```
from types_aiobotocore_ecs import ECSClient
```
The runtime client from `aiobotocore` will be `Any` without explicit type hinting with `types_aiobotocore_ecs.ECSClient`.
ListClustersResponseTypeDef
wrong:
```
from types_aiobotocore_ecs import ListClustersResponseTypeDef
```
correct:
```
from types_aiobotocore_ecs.type_defs import ListClustersResponseTypeDef
```
While some TypeDefs might be directly accessible, it's safer and clearer to import them from the `type_defs` submodule.

Quickstart

This quickstart demonstrates how to use `types-aiobotocore-ecs` to get a type-hinted ECS client. It initializes an `aiobotocore` session, creates an ECS client, and then calls `list_clusters` with full type safety, showing how to access the response attributes.

import asyncio
import aiobotocore.session
from types_aiobotocore_ecs import ECSClient, ListClustersResponseTypeDef

async def main():
    session = aiobotocore.session.get_session()
    # Replace 'us-east-1' with your desired AWS region
    async with session.create_client("ecs", region_name="us-east-1") as client:
        client: ECSClient # Type hint the client for MyPy

        print("Listing ECS clusters...")
        # The response is type-hinted for static analysis
        response: ListClustersResponseTypeDef = await client.list_clusters()
        
        cluster_arns = response.get("clusterArns", [])
        if cluster_arns:
            print(f"Found {len(cluster_arns)} clusters:")
            for arn in cluster_arns:
                print(f"- {arn}")
        else:
            print("No ECS clusters found.")

if __name__ == "__main__":
    asyncio.run(main())

view raw JSON →