async typer example

main.py

# /// script
# requires-python = "~=3.13"
# dependencies = [
#     "anyio",
#     "asyncer",
#     "typer",
#     "uvloop",
# ]
# ///

from asyncio import set_event_loop_policy, CancelledError, shield
from functools import partial

from anyio import sleep
from asyncer import runnify, create_task_group
from uvloop import EventLoopPolicy

set_event_loop_policy(EventLoopPolicy())

@partial(runnify, backend_options=dict(debug=__debug__))
async def main():
    # noinspection PyUnresolvedReferences
    from typer import echo

    async def test_sleep(sec: int):
        nonlocal echo
        try:
            await shield(sleep(sec))
        except CancelledError:
            echo = partial(echo, err= True)
        finally:
            echo(f"test_sleep {sec}")



    async with create_task_group() as tg:
        tg.soonify(test_sleep)(6)
        tg.soonify(test_sleep)(5)
        tg.soonify(test_sleep)(2)
        tg.soonify(test_sleep)(4)

uvx --python 3.13 --with asyncer,uvloop typer main.py run