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I want this async support too to use write_stream on stlite because blocking code doesn't work on it.

@evertoncolling Thanks for the suggestion. We are considering adding this natively to write_stream. In the meantime, here is a workaround to transform async generators to sync generators and use them with st.write_stream:

import asyncio
from typing import AsyncGenerator

import streamlit as st

async def async_generator():
    yield "hello"
    await asyncio.sleep(2)
    yield "world"

def to_sync_generator(async_gen: AsyncGenerator):
    while True:
        try:
            yield asyncio.run(anext(async_gen))
        except StopAsyncIteration:
            break

st.write_stream(to_sync_generator(async_generator()))

@evertoncolling Thanks for the suggestion. We are considering adding this natively to write_stream. In the meantime, here is a workaround to transform async generators to sync generators and use them with st.write_stream:

import asyncio
from typing import AsyncGenerator

import streamlit as st

async def async_generator():
    yield "hello"
    await asyncio.sleep(2)
    yield "world"

def to_sync_generator(async_gen: AsyncGenerator):
    while True:
        try:
            yield asyncio.run(anext(async_gen))
        except StopAsyncIteration:
            break

st.write_stream(to_sync_generator(async_generator()))

This seem to work for 1 step and then break immediately.

@FilippTrigub do you have more information on how it breaks? Is there any kind of error?