This document describes Celery 3.0. For development docs, go here.

celery.exceptions

celery.exceptions

This module contains all exceptions used by the Celery API.

exception celery.exceptions.AlreadyRegistered

The task is already registered.

exception celery.exceptions.AlwaysEagerIgnored

send_task ignores CELERY_ALWAYS_EAGER option

exception celery.exceptions.CDeprecationWarning

exception celery.exceptions.CPendingDeprecationWarning

exception celery.exceptions.ChordError

A task part of the chord raised an exception.

exception celery.exceptions.Ignore

A task can raise this to ignore doing state updates.

exception celery.exceptions.ImproperlyConfigured

Celery is somehow improperly configured.

exception celery.exceptions.IncompleteStream

Found the end of a stream of data, but the data is not yet complete.

exception celery.exceptions.InvalidTaskError

The task has invalid data or is not properly constructed.

exception celery.exceptions.MaxRetriesExceededError

The tasks max restart limit has been exceeded.

exception celery.exceptions.NotConfigured

Celery has not been configured, as no config module has been found.

exception celery.exceptions.NotRegistered

The task is not registered.

exception celery.exceptions.QueueNotFound

Task routed to a queue not in CELERY_QUEUES.

exception celery.exceptions.RetryTaskError(message=None, exc=None, when=None, **kwargs)

The task is to be retried later.

exc = None

Exception (if any) that caused the retry to happen.

humanize()

message = None

Optional message describing context of retry.

when = None

Time of retry (ETA), either int or datetime.

exception celery.exceptions.SecurityError

Security related exceptions.

Handle with care.

exception celery.exceptions.SystemTerminate

Signals that the worker should terminate.

exception celery.exceptions.TaskRevokedError

The task has been revoked, so no result available.

exception celery.exceptions.TimeoutError

The operation timed out.