set cache_examples=False

app.py

@@ -3,7 +3,8 @@ import gradio as gr
 def image_classifier(inp):
     return {'cat': 0.3, 'dog': 0.7}
 
-demo = gr.Interface(fn=image_classifier, inputs="image", outputs="label", examples="examples")
+demo = gr.Interface(fn=image_classifier, inputs="image", outputs="label",
+                    examples="examples", cache_examples=False)
 #demo = gr.Interface(fn=image_classifier, inputs="image", outputs="label", 
 #                    examples="examples/negative001.jpg examples/negative002.jpg".split())
 demo.launch()