Update app.py

app.py

@@ -17,6 +17,8 @@ AGENT_OFF = "Off"
 AGENT_LANGCHAIN  = "LangChain"
 AGENT_LLAMAINDEX = "LlamaIndex"
 
+OPENWEATHERMAP_API_KEY = os.environ["OPENWEATHERMAP_API_KEY"]
+
 def invoke(openai_api_key, prompt, agent_option):
     if (openai_api_key == ""):
         raise gr.Error("OpenAI API Key is required.")