⏪ Revert import/reexport style in concurrency to simplify maintainabi…

…lity
fastapi · tiangolo · Oct 6, 2021 · Feb 10, 2021 · Feb 10, 2021 · Jun 14, 2021
commit 702aca3f36777cf37940de298a612295827fb8d6
diff --git a/fastapi/concurrency.py b/fastapi/concurrency.py
@@ -1,25 +1,18 @@
 import sys
 from typing import AsyncGenerator, ContextManager, TypeVar
 
-__all__ = [
-    "iterate_in_threadpool",
-    "run_in_threadpool",
-    "run_until_first_complete",
-    "contextmanager_in_threadpool",
-    "asynccontextmanager",
-    "AsyncExitStack",
-]
-
-from starlette.concurrency import (
-    iterate_in_threadpool,
-    run_in_threadpool,
-    run_until_first_complete,
+from starlette.concurrency import iterate_in_threadpool as iterate_in_threadpool  # noqa
+from starlette.concurrency import run_in_threadpool as run_in_threadpool  # noqa
+from starlette.concurrency import (  # noqa
+    run_until_first_complete as run_until_first_complete,
 )
 
 if sys.version_info >= (3, 7):
-    from contextlib import AsyncExitStack, asynccontextmanager
+    from contextlib import AsyncExitStack as AsyncExitStack
+    from contextlib import asynccontextmanager as asynccontextmanager
 else:
-    from contextlib2 import AsyncExitStack, asynccontextmanager
+    from contextlib2 import AsyncExitStack as AsyncExitStack  # noqa
+    from contextlib2 import asynccontextmanager as asynccontextmanager  # noqa
 
 
 _T = TypeVar("_T")