using class methods as celery tasks

Jeremy Satterfield has a clean and straight forward tutorial to write class based tasks if that's what you want to accomplish. You can check it here.

The magic is basically extending celery.Task class including a run() method, like something like this:

from celery import Task

class CustomTask(Task):
    ignore_result = True

    def __init__(self, arg):
        self.arg = arg

    def run(self):
        do_something_with_arg(self.arg)

and then run the task like this:

your_arg = 3

custom_task = CustomTask()
custom_task.delay(your_arg)

I am not sure if ignore_result = True part is necessary or not.

When you have:

    a = A()

you can do:

    A.foo.delay(a, param0, .., paramN)

Cheers

Celery has experimental support for using methods as tasks since version 3.0.

The documentation for this is in celery.contrib.methods, and also mentions some caveats you should be aware of:

https://docs.celeryproject.org/en/3.1/reference/celery.contrib.methods.html

Be aware: support for contrib.methods removed from Celery since 4.0