Fix 'get_weather' function

app.py

@@ -8,27 +8,14 @@ import os
 
 from Gradio_UI import GradioUI
 
-# Below is an example of a tool that does nothing. Amaze us with your creativity !
-@tool
-def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that does nothing yet 
-    Args:
-        arg1: the first argument
-        arg2: the second argument
-    """
-    return "What magic will you build ?"
-
 @tool
 def get_weather(city: str) -> str:
     """
-    A tool that fetches the current weather for a given city.
+    A tool that fetches the current weather for the specified city.
     Args:
-        city (str): Name of the city.
-    Returns:
-        str: Weather description or error message.
+        city (str): Name of the city (e.g. 'Athens', 'New York' etc.)
     """
-    api_key = "f0b344c8b3a80c96c6753b593d936659"
+    api_key = os.getenv("OPEN_WEATHER_API")
     base_url = "https://api.openweathermap.org/data/2.5/weather"
     params = {"q": city, "appid": api_key, "units": "metric", "lang": "en"}