app.py

import gradio as gr

from model_service import ACCURACY, predict_digit


with gr.Blocks(title="MNIST Digit API") as demo:
    gr.Markdown("# MNIST Digit API")
    gr.Markdown(f"Model-as-a-service endpoint. Test accuracy: `{ACCURACY:.4f}`.")
    gr.Markdown("Use a clear, centered, high-contrast digit image.")
    image = gr.Image(
        label="Digit image",
        image_mode="L",
        type="numpy",
        sources=["upload", "clipboard"],
    )
    digit = gr.Textbox(label="Predicted digit")
    confidence = gr.Number(label="Confidence")
    probabilities = gr.Label(label="Probabilities")
    preview = gr.Image(label="28x28 model input", image_mode="L")
    gr.Button("Predict").click(
        predict_digit,
        inputs=image,
        outputs=[digit, confidence, probabilities, preview],
        api_name="predict_digit",
    )


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