app.py

import gradio as gr
from PIL import Image

# Load or generate your images
image_paths = ["1.png", "2.png", "3.png", "4.png"]
images = [Image.open(path) for path in image_paths]
N = len(images)

def show_image(index):
    index = index % N
    return images[index], index

def next_img(index):
    return show_image(index + 1)

def prev_img(index):
    return show_image(index - 1)

with gr.Blocks() as demo:
    index_state = gr.State(0)
    
    img_display = gr.Image(type="pil")
    
    with gr.Row():
        prev_btn = gr.Button("⬅️ Previous")
        next_btn = gr.Button("Next ➡️")
    
    prev_btn.click(fn=prev_img, inputs=index_state, outputs=[img_display, index_state])
    next_btn.click(fn=next_img, inputs=index_state, outputs=[img_display, index_state])
    
    # Load the first image
    demo.load(fn=show_image, inputs=index_state, outputs=[img_display, index_state])

demo.launch()