test_spaces_startup.py

import gradio as gr
import spaces
from fastapi import FastAPI
import asyncio

app = FastAPI()

@spaces.GPU()
def test_fn():
    return "Test"

with gr.Blocks() as demo:
    gr.Button("Test").click(test_fn)

app_mounted = gr.mount_gradio_app(app, demo, path="/")

if hasattr(spaces, "zero") and hasattr(spaces.zero, "startup"):
    print("Found 'startup' in spaces.zero!")