capo-kinesis: typed, async Python SDK for AWS Kinesis¶

capo-kinesis is a typed Python SDK for AWS Kinesis. It has an async client, AsyncKinesisClient, for asyncio and trio, and a sync client, KinesisClient, with the same methods. Requests and responses are typed with TypedDicts, so your editor and type checker know every field.

It is part of capo, a community-driven alternative to boto3 and aioboto3, built on its own HTTP stack instead of botocore and generated from the official AWS Smithy models. Documentation: https://capo-sdk.dev/services/kinesis/

Installation¶

pip install capo-kinesis

Usage¶

from capo_kinesis import AsyncKinesisClient


async def main():
    async with AsyncKinesisClient() as kinesis:
        # Example: call the add_tags_to_stream operation
        response = await kinesis.add_tags_to_stream()
        print(response)

Pagination¶

Some operations in this SDK support pagination. If the operation supports pagination it will have an iter_ prefixed method that returns an async iterator.

from capo_kinesis import AsyncKinesisClient


async def main():
    async with AsyncKinesisClient() as kinesis:
        # Example: paginate over list_channels
        async for item in kinesis.iter_list_channels():
            print(item)

Waiters¶

Waiters poll an operation until a resource reaches a desired state. If the operation supports waiters it will have a wait_until_ prefixed method.

from capo_kinesis import AsyncKinesisClient


async def main():
    async with AsyncKinesisClient() as kinesis:
        # Example: wait for stream_not_exists
        await kinesis.wait_until_stream_not_exists(max_wait_time=300)

Error Handling¶

The SDK raises exceptions for errors returned by the API. Catch them to handle failures gracefully.

from capo_kinesis import AsyncKinesisClient
from capo_kinesis.error import AccessDeniedException


async def main():
    async with AsyncKinesisClient() as kinesis:
        try:
            await kinesis.add_tags_to_stream()
        except AccessDeniedException as e:
            print(f"Error: {e}")
            print(e.data)  # additional error data

Retrying¶

The SDK retries failed operations automatically. Retry behaviour follows the Smithy specification: errors are retried based on their is_retryable and is_throttling_error attributes. Throttling errors use a longer base delay. Network-level failures (connection errors and timeouts) are also retried. Non-retryable errors, such as client errors without the @retryable trait, are raised immediately without further attempts.

The number of attempts defaults to 3 and can be changed at the client level via retry_max_attempts, or per call via config_overrides.

from capo_kinesis import AsyncKinesisClient


async def main():
    async with AsyncKinesisClient() as kinesis:
        # Default: 3 attempts for every operation
        response = await kinesis.add_tags_to_stream()

        # Override per operation
        response = await kinesis.add_tags_to_stream(config_overrides={"retry_max_attempts": 5})

        # Disable retries for this call
        response = await kinesis.add_tags_to_stream(config_overrides={"retry_max_attempts": 1})