Update app.py

app.py

@@ -41,10 +41,10 @@ def get_city_id(city_name):
     """A tool that get city ID from city name.
 
     Args:
-        city_name:  The city name that want to get city id written in Japanese. (e.g., '東京', '横浜')
+        city_name:  The city name that you want to get city id written in Japanese.
 
     Returns:
-        city id. If not get, return None.
+        city_id. If not get, return None.
     """
 
     # XMLのURL
@@ -59,7 +59,8 @@ def get_city_id(city_name):
         root = ET.fromstring(xml_string)
         for city in root.findall('.//city'):
             if city.get('title') == city_name:
-                return city.get('id')
+                city_id = city.get('id')
+                return f"city_id is {city_id}"
         return None
     except requests.exceptions.RequestException as e:
         print(f"Error during request: {e}")