Celery auto reload on ANY changes

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Celery --autoreload doesn’t work and it is deprecated.

Since you are using django, you can write a management command for that.
Django has autoreload utility which is used by runserver to restart WSGI server when code changes.

The same functionality can be used to reload celery workers. Create a seperate management command called celery. Write a function to kill existing worker and start a new worker. Now hook this function to autoreload as follows.

import shlex
import subprocess

from django.core.management.base import BaseCommand
from django.utils import autoreload


def restart_celery():
    cmd = 'pkill celery'
    subprocess.call(shlex.split(cmd))
    cmd = 'celery worker -l info -A foo'
    subprocess.call(shlex.split(cmd))


class Command(BaseCommand):

    def handle(self, *args, **options):
        print('Starting celery worker with autoreload...')

        # For Django>=2.2
        autoreload.run_with_reloader(restart_celery) 

        # For django<2.1
        # autoreload.main(restart_celery)

Now you can run celery worker with python manage.py celery which will autoreload when codebase changes.

This is only for development purposes and do not use it in production. Code taken from my other answer here.

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