Update app.py

app.py

@@ -4,6 +4,7 @@ import os
 from datetime import date
 from langchain.agents import AgentType, initialize_agent, load_tools, tool
 from langchain.chat_models import ChatOpenAI
+from langchain.utilities import OpenWeatherMapAPIWrapper
 
 from dotenv import load_dotenv, find_dotenv
 _ = load_dotenv(find_dotenv())
@@ -51,6 +52,7 @@ def invoke(openai_api_key, prompt, agent_option):
                                      handle_parsing_errors = True,
                                      verbose = True)
         else:
+            weather = OpenWeatherMapAPIWrapper()
             tools = load_tools(["openweathermap-api"], llm)
             
             agent = initialize_agent(tools + [time],