Django Celerery: Object не имеет атрибута 'Delay_on_commit' ⇐ Python

[Anonymous]

django 4.2 с сельдереем 5.5.1 < /p>
Запуск задачи сельдерея из представления Django иногда вызывает "generate_report 'объект не имеет атрибута' delay_on_commit '" < /p>
# tasks.py
from celery import shared_task

@shared_task
def generate_report(data):
# Code to generate report
...

< /code>
# django view
def testview(request):
from tasks import generate_report

generate_report.delay_on_commit("mytestdata")

return render(request, "simple_page.html")

< /code>
This happens on some deployments, but not on all. And when it happens, a server (webapp) reboot solves the issue. Moving the "generate_report" import to the top of the file also did not help.
Note: Code is deployed on pythonanywhere.com with several celery workers running in "always on" tasks.
Update 24/4/2025: The issue happened again today. dir(generate_report) gave this result:
['AsyncResult', 'MaxRetriesExceededError', 'OperationalError', 'Request', 'Strategy', 'annotations', 'bound', 'call', 'class', 'delattr', 'dict', 'dir', 'doc', 'eq', 'format', 'ge', 'getattribute', 'gt', 'hash', 'header', 'init', 'init_subclass', 'le', 'lt', 'module', 'name', 'ne', 'new', 'qualname', 'reduce', 'reduce_ex', 'repr', 'setattr', 'sizeof', 'str', 'subclasshook', 'trace', 'v2_compat', 'weakref', 'wrapped', '_app', '_backend', '_decorated', '_default_request', '_exec_options', '_get_app', '_get_exec_options', '_get_request', 'abstract', 'acks_late', 'acks_on_failure_or_timeout', 'add_around', 'add_to_chord', 'add_trail', 'after_return', 'annotate', 'app', 'apply', 'apply_async', 'backend', 'before_start', 'bind', 'chunks', 'default_retry_delay', 'delay', 'expires', 'from_config', 'ignore_result', 'map', 'max_retries', 'name', 'on_bound', 'on_failure', 'on_replace', 'on_retry', 'on_success', 'pop_request', 'priority', 'push_request', 'rate_limit', 'reject_on_worker_lost', 'replace', 'request', 'request_stack', 'resultrepr_maxsize', 'retry', 'run', 's', 'send_event', 'send_events', 'serializer', 'shadow_name', 'si', 'signature', 'signature_from_request', 'soft_time_limit', 'starmap', 'start_strategy', 'store_eager_result', 'store_errors_even_if_ignored', 'subtask', 'subtask_from_request', 'throws', 'time_limit', 'track_started', 'trail', 'typing', 'update_state']

Подробнее здесь: https://stackoverflow.com/questions/795 ... -on-commit