Update app.py

fixed indentations + doctrings

app.py

@@ -139,6 +139,7 @@ def generate_packing_list(destination: str, weather_summary: str, trip_days: int
         clothes.extend(["• Swimsuit (x2)", "• Beach towel", "• Flip-flops/sandals", "• Beach bag"])
     elif trip_type == "mountain":
         clothes.extend(["• Sturdy hiking shoes", "• Moisture-wicking base layers", "• Trekking socks (x3)", "• Daypack"])
+    
     return (
         f"🎒 SMART PACKING LIST ({trip_days}-day {trip_type} trip to {destination})\n"
         "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"