Update app.py

app.py

@@ -1304,16 +1304,18 @@ def create_interface():
                 available_years = sorted([year for year in range(1950, 2025) if year in ibtracs.data.keys()])
                 return gr.Dropdown.update(choices=available_years, value=available_years[-1] if available_years else None)
             
+            # Update typhoon dropdown when year changes
             # Update typhoon dropdown when year changes
             def update_typhoon_dropdown(year):
                 if not year or ibtracs is None:
-                    return gr.Dropdown.update(choices=[], value=None)
-                
+                    return [], None
+    
                 typhoons = get_typhoons_for_year(year)
-                return gr.Dropdown.update(
-                    choices=[{"label": name, "value": id} for name, id in typhoons],
-                    value=typhoons[0][1] if typhoons else None
-                )
+                if not typhoons:
+                    return [], None
+    
+                # Return the choices and value directly
+                return [{"label": name, "value": id} for name, id in typhoons], typhoons[0][1] if typhoons else None
             
             # Update the year dropdown once at the beginning
             demo.load(