added lambda list

wrisa · wrisa · commit 8a7e81f2a331 · 2025-09-22T15:56:10.000-07:00
diff --git a/instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/span_manager.py b/instrumentation-genai/opentelemetry-instrumentation-langchain/src/opentelemetry/instrumentation/langchain/span_manager.py
@@ -31,7 +31,7 @@
 @dataclass
 class _SpanState:
     span: Span
-    children: List[UUID] = field(default_factory=list)  # type: ignore [reportUnknownVariableType]
+    children: List[UUID] = field(default_factory=lambda: list())
 
 
 class _SpanManager:
