app.py

import gradio as gr

def plex(outtxt):
    return "hi"+outtxt+""

with gr.Blocks() as iface:
    with gr.Row():
        with gr.Column(scale=4):
            outtxt=gr.Textbox()
        with gr.Column(scale=1):
            with gr.Tabs():
                with gr.Row():
                    tab1=gr.Tab()
                with gr.Row():
                    tab2=gr.Tab()
    with gr.Row():
        btn=gr.Button()
        btn.click(plex,outtxt,outtxt)


iface.launch()