Update app.py

app.py

@@ -40,7 +40,15 @@ if __name__ == '__main__':
         rerank_model_name_or_path=args.rerank_model_name,
     )
     logger.info(f"chatpdf model: {model}")
-
+    
+    def predict_stream(message, history):
+        history_format = []
+        for human, assistant in history:
+            history_format.append([human, assistant])
+        model.history = history_format
+        for chunk in model.predict_stream(message):
+            yield chunk
+            
     # Función para generar respuesta (sin yield)
     def predict(message, history):
         history_format = []