app.py

import time
from collections.abc import Generator

from fastapi.responses import HTMLResponse
from gradio import Server

demo = Server()


@demo.api()
def stream(message: str) -> Generator[str, None, None]:
    full = ""
    for word in ["Hello", " ", "world", "!"]:
        full += word
        yield full
        time.sleep(0.1)


@demo.get("/", response_class=HTMLResponse)
async def homepage():
    with open("client.html", encoding="utf-8") as f:
        return f.read()


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