app.py

import gradio as gr

def hello(name):
    return f"Hello {name}, the Space is working!"

with gr.Blocks() as demo:
    gr.Markdown("## Test App")
    name = gr.Textbox("world", label="Your name")
    out = gr.Textbox(label="Output")
    btn = gr.Button("Run")
    btn.click(hello, name, out)

demo.launch()