Update app.py

app.py

@@ -74,7 +74,7 @@ def main():
                                                "three_g": [Has_3G],
                                                "touch_screen": [Has_touch_screen],
                                                "wifi": [Has_wifi]}))
-            result = if result[0] == 0:
+            if result[0] == 0:
               result = 'low cost' 
             elif result[0] == 1:
               result = 'high cost'