Merge cc32875 into 1edfd5c

agronholm · Apr 23, 2024 · c50a0b3 · c50a0b3
2 parents 1edfd5c + cc32875
commit c50a0b3
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/anyio/_core/_eventloop.py b/src/anyio/_core/_eventloop.py
@@ -155,9 +155,9 @@ def get_async_backend(asynclib_name: str | None = None) -> AsyncBackend:
         asynclib_name = sniffio.current_async_library()
 
     modulename = "anyio._backends._" + asynclib_name
-    try:
-        module = sys.modules[modulename]
-    except KeyError:
+    module = sys.modules.get(modulename)
+    if not hasattr(module, "backend_class"):
+        # module is not loaded yet or it`s loaded only partially
         module = import_module(modulename)
 
     return getattr(module, "backend_class")