python apschedule BlockingScheduler with interval trigger: Start immediately

Question

I am using python apscheduler to schedule a specific task every 45 minutes. The problem is, when i add the job and start the scheduler, it starts at 45 minutes from now.

from apscheduler.schedulers.blocking import BlockingScheduler

class myClass:

    def schedule(self):
        self.scheduler = BlockingScheduler()
        self.scheduler.add_job(self.myJob, 'interval', minutes=45)
        self.scheduler.start()

    def myJob(self):
        print('I finally started')

I tried setting start_date, but with no success. How can i make sure the job is executed immediately, and not after waiting the interval for the first time?

Audible

The design of the interval trigger has been fixed in the upcoming v4.0 release so that the first run starts immediately. – Soidisant

ahh! long overdue ty. Not realeased yet though. – Callis

Answer 1

Try next_run_time=datetime.now().

Blond

from datetime import datetime, then I use datetime.utcnow() because I set up my scheduler with BlockingScheduler({'apscheduler.timezone': 'UTC'}) – Exhortative

Answer 2

Not a good solution but works for me.

from apscheduler.schedulers.blocking import BlockingScheduler

class myClass:

    def schedule(self):
        self.myJob()#run your job immediately here, then scheduler
        self.scheduler = BlockingScheduler()
        self.scheduler.add_job(self.myJob, 'interval', minutes=45)
        self.scheduler.start()

    def myJob(self):
        print('I finally started')

Quattlebaum

Answer 3

The given answers are too complex for a simple task that is well documented: https://apscheduler.readthedocs.io/en/3.x/modules/triggers/date.html#examples

To add a job to be run immediately:

The 'date' trigger and datetime.now() as run_date are implicit

sched.add_job(my_job)

Kathlenekathlin