app.py

import gradio as gr


def GetText():
    return "Teste!"


with gr.Blocks() as demo:
       btn = gr.Button("Click that  button to start 2!")
       fileResult = gr.Text();
       btn.click( GetText, None, [fileResult] )
       
       
if __name__ == "__main__":
    demo.launch(show_api=True, ssr_mode=False)