run.py

import os
import gradio as gr

with gr.Blocks() as demo:
    chat = gr.Chatbot()
    text = gr.Textbox()

    def add_message(chat, msg):
        chat.append([msg, msg])
        return chat

    text.submit(add_message, [chat, text], chat)

if __name__ == "__main__":
    demo.launch()