Update app.py

app.py

@@ -25,10 +25,10 @@ def visualize_instance_seg_mask(mask):
             if mask[i, j]==0:
                 wall.append([i,j])
             
-            elif mask[i, j]==3
+            elif mask[i, j]==3:
                  floor.append([i,j])
             
-            elif mask[i, j]==8
+            elif mask[i, j]==8:
                 window.append([i,j])
             else:
                 other.append([i,j])