app.py

import gradio as gr

def greet(name):
    return f"Привет, {name}!"

with gr.Blocks(title="Test") as demo:
    gr.Markdown("# It works!")
    name = gr.Textbox(label="Your name")
    output = gr.Textbox(label="Output")
    btn = gr.Button("Run")
    btn.click(fn=greet, inputs=name, outputs=output)

demo.launch()