app.py

import gradio as gr
def image_mod(image):
    print("Hello world")
    return 

gr.Interface(fn=image_mod,
             inputs=gr.Image(shape=(224, 224)),
             outputs=gr.Label(num_top_classes=3),
             examples=["n146OugAwBUjFACpuWrZUE6Q0-M.jpg"]).launch()