芹菜定期任务计时错误

Question

Currently I have celery periodic-task with the following set-up:

CELERYBEAT_SCHEDULE = {
    'test-celery': {
        'task': 'flask_react_app.task.ingest_stock_data',
        'schedule': crontab(minute='*/17', hour='8-16', day_of_week='mon-fri'),
    }
}

This is almost what I wanted, except, I want the job to start at 08:01 and the finish at 16:30 running every 17 minutes between those times (so 08:01, 08:18, 08:35). So I tried:

CELERYBEAT_SCHEDULE = {
    'test-celery': {
        'task': 'flask_react_app.task.ingest_stock_data',
        'schedule': crontab(minute='1/17', hour='8-16', day_of_week='mon-fri'),
    }
}

Which gave me the error:

ValueError: Invalid weekday literal '1/17'

Even though this literal is in the minute key word argument.

Answer 1

I'm not sure if I understood you correctly, but you can do the following if you want to run the task periodically every 1 minute, between 8 and 16.

CELERYBEAT_SCHEDULE = {
    'test-celery': {
        'task': 'flask_react_app.task.ingest_stock_data',
        'schedule': crontab(minute='*/1', hour='8-16', day_of_week='mon-fri'),
    }
}