app.py

import time

import gradio as gr


def fn():
    time.sleep(5)
    return 'test'


with gr.Blocks() as demo:
    button = gr.Button('run')
    gr.Slider(minimum=0, maximum=1000, value=1, step=1, randomize=True)
    text = gr.Text()
    button.click(fn=fn, outputs=text)

demo.queue().launch()