Update app.py

app.py

@@ -5,7 +5,10 @@ from datetime import date
 from langchain.agents import AgentType, initialize_agent, load_tools, tool
 from langchain.chat_models import ChatOpenAI
 
-OPENWEATHERMAP_API_KEY = ""
+from dotenv import load_dotenv, find_dotenv
+_ = load_dotenv(find_dotenv())
+
+OPENWEATHERMAP_API_KEY = os.environ["CREDENTIALS"]
 
 config = {
     "max_tokens": 1000,