Update app.py

app.py

@@ -17,8 +17,7 @@ def calculate_walking_time_paris(start, end) -> int:
     """
     # This is a placeholder function. In a real scenario, this function would call a tool to get the actual walking time.
     # For now, we'll use predefined walking times for simplicity.
-    walking_times = 
-    {
+    walking_times = {
         ("Eiffel Tower", "Champ de Mars"): 9,
         ("Champ de Mars", "Musée de l'Orangerie"): 11,
         ("Musée de l'Orangerie", "Pont Alexandre III"): 8,