Fix py 3.9

- isclass and issubclass disagree on whether something like list[str] is a class
2026-08-31 20:29:46 +02:00 · 2025-03-11 17:51:13 -07:00
parent 14c2241853
commit e566ed4b3f
1 changed files with 3 additions and 1 deletions
@@ -627,7 +627,9 @@ class StateGraph(Graph):
            builder=self,
            config_type=self.config_schema,
            input_model=self.input
-            if isclass(self.input) and issubclass(self.input, (BaseModel, BaseModelV1))
+            if len(self.channels) > 1
+            and isclass(self.input)
+            and issubclass(self.input, (BaseModel, BaseModelV1))
            else None,
            nodes={},
            channels={