Update app.py

app.py

@@ -352,7 +352,10 @@ def generate_map(location_names):
     map_html = m._repr_html_()
     return map_html
 #------------------------------------
-
+from langchain import OpenAI, LLMMathChain, SerpAPIWrapper
+from langchain.agents import initialize_agent, Tool, AgentExecutor
+from langchain.chat_models import ChatOpenAI
+import os
 
 # Step 1: Define the Yelp Search Tool
 class YelpSearchTool: