mypy_boto3_builder: aioboto3: session.client shows "type is partually unknown" in VSCode

from aioboto3 import Session

session = Session()
async with session.client(service_name='s3') as s3:
    print(s3)

Install aioboto3, types-aioboto3[essential], types-aiobotocore[essential], types-aiobotocore-support
Run pylance on the above code sample

Actual output

Warning from pylance: type of “client” is partially unknown

Expected output

No warnings

Additional context MacOS, recent versions of aioboto3 and other libs. “strict” mode of pylance.

About this issue

Thanks, yes that’s what I thought, I’m essentially doing this:

  # pyright: ignore[reportUnknownMemberType]

Thanks for the investigation! I’m closing this issue, however I will probably create related issue for pyright.

I will check again. For some reason, pylance does not use types-aiobotocore annotations.