ddd

my_tools.py

@@ -64,7 +64,7 @@ class GeminiLLM(LLM):
 
         # --------- Normalización rápida (evita FieldInfo) -----------------
         if not isinstance(self.model_name, str):
-            self.model_name = "models/gemini-1.5-flash-latest"
+            self.model_name = "models/gemini-1.5-pro-latest" #"models/gemini-1.5-flash-latest"
         if not isinstance(self.temperature, (float, int)):
             self.temperature = 0.0
         # ------------------------------------------------------------------
@@ -439,13 +439,14 @@ agent = ReActAgent.from_tools(
 
 
 # Helper to strip to the last Observation or fallback
-
 def _extract_observation(raw: str) -> str:
+    """Extrae la ÚLTIMA observación de la cadena de pensamiento."""
     if "Observation:" in raw:
-        obs = raw.split("Observation:", 1)[1].strip()
-        if "Final Answer:" in obs:
-            obs = obs.split("Final Answer:", 1)[0].strip()
-        return obs
+        # rsplit divide desde la derecha, asegurando que tomamos la última
+        segment = raw.rsplit("Observation:", 1)[-1] 
+        if "Final Answer:" in segment:
+            segment = segment.split("Final Answer:", 1)[0]
+        return segment.strip()
     return raw.strip()