coroutine `AioSession._create_client` was never awaited

• Async AWS SDK for Python version:

  • aioboto3==8.0.2
  • aiobotocore==1.0.3
  • boto3==1.12.32
  • botocore==1.15.32

• Python version: 3.6

• Operating System: Linux

Description

When upgrading from 7.1.0 to 8.0.2, I started seeing the following error, and the application quits.

Traceback (most recent call last):
  File "x.py", line 21, in <module>
    loop.run_until_complete(crash())
  File "/usr/lib/python3.6/asyncio/base_events.py", line 488, in run_until_complete
    return future.result()
  File "x.py", line 16, in crash
    bucket = await s3.meta.client.head_bucket(Bucket='test_bucket')
AttributeError: 'ResourceCreaterContext' object has no attribute 'meta'
sys:1: RuntimeWarning: coroutine 'AioSession._create_client' was never awaited

Rolling back to v7.1.0 resolves this issue (pip install aioboto3==7.1.0).

I’ve not had a chance to dig into this properly yet.

What I Did

import asyncio
import botocore
import aioboto3

async def crash():
    args = {
        'config': botocore.config.Config(
            signature_version='s3v4',
        ),
        'aws_access_key_id': 'minioadmin',
        'aws_secret_access_key': 'minioadmin',
        'endpoint_url': 'http://patch.attie.co.uk:9000/',
        'region_name': 'local',
    }
    s3 = aioboto3.resource('s3', **args)
    bucket = await s3.meta.client.head_bucket(Bucket='test_bucket')

    assert(False)

loop = asyncio.get_event_loop()
loop.run_until_complete(crash())
loop.close()