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Async client for aws services using botocore and aiohttp

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Async client for amazon services using botocore and aiohttp/asyncio.

Main purpose of this library to support amazon s3 api, but other services should work (may be with minor fixes). For now we have tested only upload/download api for s3, other users report that SQS and Dynamo services work also. More tests coming soon.


$ pip install aiobotocore

Basic Example

import asyncio
import aiobotocore


async def go(loop):
    bucket = 'dataintake'
    filename = 'dummy.bin'
    folder = 'aiobotocore'
    key = '{}/{}'.format(folder, filename)

    session = aiobotocore.get_session(loop=loop)
    async with session.create_client('s3', region_name='us-west-2',
                                   aws_access_key_id=AWS_ACCESS_KEY_ID) as client:
        # upload object to amazon s3
        data = b'\x01'*1024
        resp = await client.put_object(Bucket=bucket,

        # getting s3 object properties of file we just uploaded
        resp = await client.get_object_acl(Bucket=bucket, Key=key)

        # get object from s3
        response = await client.get_object(Bucket=bucket, Key=key)
        # this will ensure the connection is correctly re-used/closed
        async with response['Body'] as stream:
            assert await == data

        # list s3 objects using paginator
        paginator = client.get_paginator('list_objects')
        async for result in paginator.paginate(Bucket=bucket, Prefix=folder):
            for c in result.get('Contents', []):

        # delete object from s3
        resp = await client.delete_object(Bucket=bucket, Key=key)

loop = asyncio.get_event_loop()

Supported AWS Services

This is a non-exuastive list of what tests aiobotocore runs against AWS services. Not all methods are tested but we aim to test the majority of commonly used methods.

Service Status
S3 Working
DynamoDB Basic methods tested
SNS Basic methods tested
SQS Basic methods tested
CloudFormation Stack creation tested
Kinesis Basic methods tested

Due to the way boto3 is implemented, its highly likely that even if services are not listed above that you can take any boto3.client(‘service’) and stick await infront of methods to make them async, e.g. await client.list_named_queries() would asynchronous list all of the named Athena queries.

If a service is not listed here and you could do with some tests or examples feel free to raise an issue.

Run Tests

Make sure you have development requirements installed and your amazon key and secret accessible via environment variables:

$ cd aiobotocore
$ export AWS_ACCESS_KEY_ID=xxx
$ pip install -Ur requirements-dev.txt

Execute tests suite:

$ py.test -v tests



awscli depends on a single version of botocore, however aiobotocore only supports a specific range of botocore versions. To ensure you install the latest version of awscli that your specific combination or aiobotocore and botocore can support use:

pip install -U aiobotocore[awscli]


0.10.0 (2018-12-09)

  • Update to botocore 1.12.49 #639 (thanks @terrycain)

0.9.4 (2018-08-08)

  • Add ClientPayloadError as retryable exception

0.9.3 (2018-07-16)

  • Bring botocore up to date

0.9.2 (2018-05-05)

  • bump aiohttp requirement to fix read timeouts

0.9.1 (2018-05-04)

  • fix timeout bug introduced in last release

0.9.0 (2018-06-01)

  • bump aiohttp to 3.3.x
  • remove unneeded set_socket_timeout

0.8.0 (2018-05-07)

  • Fix pagination #573 (thanks @adamrothman)
  • Enabled several s3 tests via moto
  • Bring botocore up to date

0.7.0 (2018-05-01)

  • Just version bump

0.6.1a0 (2018-05-01)

  • bump to aiohttp 3.1.x
  • switch tests to Python 3.5+
  • switch to native coroutines
  • fix non-streaming body timeout retries

0.6.0 (2018-03-04)

  • Upgrade to aiohttp>=3.0.0 #536 (thanks @Gr1N)

0.5.3 (2018-02-23)

  • Fixed waiters #523 (thanks @dalazx)
  • fix conn_timeout #485

0.5.2 (2017-12-06)

  • Updated awscli dependency #461

0.5.1 (2017-11-10)

  • Disabled compressed response #430

0.5.0 (2017-11-10)

  • Fix error botocore error checking #190
  • Update supported botocore requirement to: >=1.7.28, <=1.7.40
  • Bump aiohttp requirement to support compressed responses correctly #298

0.4.5 (2017-09-05)

  • Added SQS examples and tests #336
  • Changed requirements.txt structure #336
  • bump to botocore 1.7.4
  • Added DynamoDB examples and tests #340

0.4.4 (2017-08-16)

  • add the supported versions of boto3 to extras require #324

0.4.3 (2017-07-05)

  • add the supported versions of awscli to extras require #273 (thanks @graingert)

0.4.2 (2017-07-03)

  • update supported aiohttp requirement to: >=2.0.4, <=2.3.0
  • update supported botocore requirement to: >=1.5.71, <=1.5.78

0.4.1 (2017-06-27)

  • fix redirects #268

0.4.0 (2017-06-19)

  • update botocore requirement to: botocore>=1.5.34, <=1.5.70
  • fix read_timeout due to #245
  • implement set_socket_timeout

0.3.3 (2017-05-22)

  • switch to PEP 440 version parser to support ‘dev’ versions

0.3.2 (2017-05-22)

  • Fix botocore integration
  • Provisional fix for aiohttp 2.x stream support
  • update botocore requirement to: botocore>=1.5.34, <=1.5.52

0.3.1 (2017-04-18)

  • Fixed Waiter support

0.3.0 (2017-04-01)

  • Added support for aiohttp>=2.0.4 (thanks @achimnol)
  • update botocore requirement to: botocore>=1.5.0, <=1.5.33

0.2.3 (2017-03-22)

  • update botocore requirement to: botocore>=1.5.0, <1.5.29

0.2.2 (2017-03-07)

  • set aiobotocore.__all__ for * imports #121 (thanks @graingert)
  • fix ETag in head_object response #132

0.2.1 (2017-02-01)

  • Normalize headers and handle redirection by botocore #115 (thanks @Fedorof)

0.2.0 (2017-01-30)

  • add support for proxies (thanks @jjonek)
  • remove AioConfig verify_ssl connector_arg as this is handled by the create_client verify param
  • remove AioConfig limit connector_arg as this is now handled by by the Config max_pool_connections property (note default is 10)

0.1.1 (2017-01-16)

  • botocore updated to version 1.5.0

0.1.0 (2017-01-12)

  • Pass timeout to aiohttp.request to enforce read_timeout #86 (thanks @vharitonsky) (bumped up to next semantic version due to read_timeout enabling change)

0.0.6 (2016-11-19)

  • Added enforcement of plain response #57 (thanks @rymir)
  • botocore updated to version 1.4.73 #74 (thanks @vas3k)

0.0.5 (2016-06-01)

  • Initial alpha release

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