celery.states

Built-in task states.

States

Set of states meaning the task result is ready (has been executed).

Set of states meaning the task result is not ready (has not been executed).

Set of states meaning the task returned an exception.

Set of exception states that should propagate exceptions to the user.

Set of all possible states.

celery.states.PENDING = ‘PENDING’

Task state is unknown (assumed pending since you know the id).

celery.states.RECEIVED = ‘RECEIVED’

Task was received by a worker.

celery.states.STARTED = ‘STARTED’

Task was started by a worker (CELERY_TRACK_STARTED).

celery.states.SUCCESS = ‘SUCCESS’

Task succeeded

celery.states.FAILURE = ‘FAILURE’

Task failed

celery.states.REVOKED = ‘REVOKED’

Task was revoked.

celery.states.RETRY = ‘RETRY’

Task is waiting for retry.

celery.states.precedence(state)[源代码]

Get the precedence index for state.

Lower index means higher precedence.

class celery.states.state[源代码]

State is a subclass of str, implementing comparison methods adhering to state precedence rules:

>>> from celery.states import state, PENDING, SUCCESS
>>> state(PENDING) < state(SUCCESS)
True

Any custom state is considered to be lower than FAILURE and SUCCESS, but higher than any of the other built-in states:

>>> state('PROGRESS') > state(STARTED)
True
>>> state('PROGRESS') > state('SUCCESS')
False