app.py

import gradio as gr
from PIL import Image

def simple_detect(image):
    if image is None:
        return "No image provided"
    return f"Image received: {image.size}"

demo = gr.Interface(
    fn=simple_detect,
    inputs=gr.Image(type="pil"),
    outputs="text"
)

if __name__ == "__main__":
    demo.launch()