open examples option. Specify the gradio version to enable the dragging on example images.

app.py

@@ -61,7 +61,7 @@ def pred_maps(image_1, image_2, image_3, image_4):
 
 
 N = 4
-examples = [[_] for _ in glob('example_images/butterfly/*')][:N]
+examples = [_ for _ in glob('example_images/butterfly/*')][:N]
 
 ipt = [gr.Image().style(width=600, height=150) for _ in range(N)]
 opt = [gr.Image().style(width=600, height=150) for _ in range(N)]