Update app.py

app.py

@@ -6,6 +6,7 @@ import inspect
 import pandas as pd
 from smolagents import LiteLLMModel, DuckDuckGoSearchTool, CodeAgent, WikipediaSearchTool,VisitWebpageTool
 from langchain_community.tools.tavily_search import TavilySearchResults
+from langchain_core.tools import tool
 
 # (Keep Constants as is)
 # --- Constants ---