update open weather api key

app.py

@@ -1,4 +1,5 @@
 from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel,load_tool, tool
+import os
 import datetime
 import requests
 import pytz
@@ -15,10 +16,11 @@ def get_weather(location:str,)-> dict: #it's import to specify the return type
     Args:
         location: A string representing location (Eg. London)
     """
+    api_key = os.getenv("openweatherapikey")
     base_url = "https://api.openweathermap.org/data/2.5/weather"
         params = {
             "q": location,
-            "appid": self.api_key,
+            "appid": api_key,
             "units": "metric"  # Get temperature in Celsius
         }
         response = requests.get(base_url, params=params)