AsyncIOScheduler won't run if it's initialized before running uvicorn

Describe the bug The test job does not run

To Reproduce

from os import environ
from apscheduler.executors.asyncio import AsyncIOExecutor
from apscheduler.executors.pool import ThreadPoolExecutor
from apscheduler.jobstores.memory import MemoryJobStore
from apscheduler.schedulers.asyncio import AsyncIOScheduler
from pytz import utc

"""
    Local async function scheduler allows periodic or
    timed function execution. Uses Redis backend to queue
    up jobs so multiple workers and coordinate jobs.
"""

job_store = (
    MemoryJobStore()
)  # FIXME due to a bug in the apscheduler + gunicorn combination


scheduler: AsyncIOScheduler = AsyncIOScheduler(
    jobstores={
        "default": job_store,
    },
    executors={"default": AsyncIOExecutor(), "cron": ThreadPoolExecutor()},
    # timezone=utc,
    job_defaults={
        "coalesce": True,  # Trigger only one job to make up for missed jobs.
        "max_instances": 1,  # Allow only one execution of a job per time.
    },
)

if __name__ == "__main__":
    from time import sleep

    @scheduler.scheduled_job(
        'cron',
        day_of_week='mon-fri',
        hour='*',
        minute='0-59',
        timezone="US/Pacific",
    )
    def test_job():
        print("test job ran")

    scheduler.start()

    while 1:
        print("...")
        sleep(4)

Expected behavior test job ran should be printed.

Additional context None

[imirzadeh]

Yeah, that was my problem too. But since I’m using FastAPI and I use the AsyncScheduler from the API, I can run:

uvicorn server:app --host <HOST> --port <PORT> --reload

and it works fine for me.

[agronholm]

You are required to run the code that schedules the jobs. The decorator is just an alternate way to do schedule.add_job() after all.