Merge pull request #18 from NHSDigital/mm-mesh-1478-publish-wheel-to-release

mesh-1478: async generator type for async stream from s3

Author: matt-mercer

nhs_aws_helpers/__init__.py

@@ -12,7 +12,7 @@
 from typing import (
     IO,
     Any,
-    AsyncIterator,
+    AsyncGenerator,
     Callable,
     Dict,
     Generator,
@@ -1125,7 +1125,9 @@ def assumed_role_session(
     return Session(botocore_session=session)
 
 
-async def async_stream_from_s3(s3_get_resp: GetObjectOutputTypeDef, bytes_per_chunk: int) -> AsyncIterator[bytes]:
+async def async_stream_from_s3(
+    s3_get_resp: GetObjectOutputTypeDef, bytes_per_chunk: int
+) -> AsyncGenerator[bytes, None]:
     body = s3_get_resp["Body"]
     chunk = await run_in_executor(body.read, bytes_per_chunk)
     while chunk: