chore(fastapi): formatting after ruff auto-fix

Author: artemziborev

instrumentation/opentelemetry-instrumentation-fastapi/src/opentelemetry/instrumentation/fastapi/__init__.py

@@ -186,6 +186,7 @@ def client_response_hook(span: Span, scope: dict[str, Any], message: dict[str, A
 import logging
 import types
 from typing import Collection, Literal
+from weakref import WeakSet as _WeakSet
 
 import fastapi
 from starlette.applications import Starlette
@@ -415,9 +416,7 @@ class _InstrumentedFastAPI(fastapi.FastAPI):
     _exclude_spans: list[Literal["receive", "send"]] | None = None
 
     # Track instrumented app instances using weak references to avoid GC leaks
-    from weakref import WeakSet as _WeakSet  # type: ignore
-
-    _instrumented_fastapi_apps: "_InstrumentedFastAPI._WeakSet" = _WeakSet()
+    _instrumented_fastapi_apps = _WeakSet()
     _sem_conv_opt_in_mode = _StabilityMode.DEFAULT
 
     def __init__(self, *args, **kwargs):

instrumentation/opentelemetry-instrumentation-fastapi/tests/test_fastapi_instrumentation.py

@@ -1402,14 +1402,14 @@ def test_mark_span_internal_in_presence_of_span_from_other_framework(self):
 
 class TestFastAPIGarbageCollection(unittest.TestCase):
     def test_fastapi_app_is_collected_after_instrument(self):
-        import gc
-        import weakref
+        import gc as _gc
+        import weakref as _weakref
 
         app = fastapi.FastAPI()
         otel_fastapi.FastAPIInstrumentor().instrument_app(app)
-        app_ref = weakref.ref(app)
+        app_ref = _weakref.ref(app)
         del app
-        gc.collect()
+        _gc.collect()
         self.assertIsNone(app_ref())