collect_ids

Used as a callback in a chain or group where the previous tasks are :task:ids: returns a tuple of::

    (previous_result, (root_id, parent_id, i))

def collect_ids(
    self: celery.app.task.Task,
    res: Any,
    i: int
) - > tuple

Used as a callback in a chain or group where the previous tasks are :task:ids: returns a tuple of:: (previous_result, (root_id, parent_id, i))

Parameters

Name	Type	Description
self	celery.app.task.Task	The task instance automatically bound to the function by the @shared_task decorator.
res	Any	The result passed from the previous task in the Celery chain or group.
i	int	An index or identifier used to track the specific task's position or sequence.

Returns

Type	Description
tuple	A nested tuple containing the previous task's result and a sub-tuple of the current task's root ID, parent ID, and the provided index.