example of st.spinner() for desktop & requests

[pvanallen]

Hi - Could someone provide a quick example of making st.spinner() work for a desktop app that uses requests? I've tried the following with no success. It works if I call a "normal" function, but with a requests based function, no luck. The function works, but no spinner shows.

Thanks!

import asyncio
import streamlit as st
import requests

async def ollama_api(payload):
    # Send the request
    response = requests.post("http://localhost:11434/api/chat", json=payload)
    return response

async def main():
    # Schedule task to run concurrently
    with st.spinner("this spinner is waiting..."):
        await asyncio.sleep(0.1)
        payload = {
            "model": "gemma3",
            "messages": [
                {"role": "system", "content": "helpful assistant"},
                {"role": "user", "content": "why is the sky blue?"}
            ]
        }
        response = await ollama_api(payload)
        st.write(response)

asyncio.run(main())

[pvanallen]

I found the solution to my problem. I tried the aiohttp module, but it is not supported in stlite. But httpx is async and is supported.

import asyncio
import httpx # works with spinner & stlite
# import requests - doesn't work with spinner
# import aiohttp - doesn't work with stlite - not found
import streamlit as st

async def ollama_api(payload):
    client = httpx.AsyncClient()
    response = await client.post("http://localhost:11434/api/chat", json=payload)
    return response

async def main():
    # Schedule tasks to run concurrently
    with st.spinner("this spinner is waiting..."):
        await asyncio.sleep(0.1)
        payload = {
            "model": "gemma3",
            "messages": [
                {"role": "system", "content": "helpful assistant"},
                {"role": "user", "content": "why is the sky blue?"}
            ]
        }
        response = await ollama_api(payload)
        st.write(response)

asyncio.run(main())