update app.py

app.py

@@ -37,7 +37,7 @@ def get_current_time_in_timezone(timezone: str) -> str:
 
 
 @tool
-def get_city_id(url, city_name):
+def get_city_id(city_name):
     """A tool that get city ID from city name.
 
     Args:
@@ -51,7 +51,7 @@ def get_city_id(url, city_name):
     xml_url = "https://weather.tsukumijima.net/primary_area.xml"
 
     try:
-        response = requests.get(url)
+        response = requests.get(xml_url)
         response.raise_for_status()
         response.encoding = response.apparent_encoding
         xml_string = response.text