Update app.py

app.py

@@ -16,7 +16,7 @@ def my_weather_tool(location: str) -> str:
         location: Location name (e.g., 'New York') or lat,lon coordinates (e.g., '40.7128,-74.0060')
     """
     # Get API key from environment
-    api_key = os.getenv("VYK6ASAfHq4z7TzyljTaZg5nICJKFmL8")
+    api_key = os.getenv("TOMORROW_API_KEY")
     if not api_key:
         return "Error: TOMORROW_API_KEY environment variable is not set. Please set it to use this tool."