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- def retry(self, args=None, kwargs=None, exc=None, throw=True,
- eta=None, countdown=None, max_retries=None, **options):
- """Retry the task, adding it to the back of the queue.
- >>> from imaginary_twitter_lib import Twitter
- >>> from proj.celery import app
- >>> @app.task(bind=True)
- ... def tweet(self, auth, message):
- ... twitter = Twitter(oauth=auth)
- ... try:
- ... twitter.post_status_update(message)
- ... except twitter.FailWhale as exc:
- ... # Retry in 5 minutes.
- ... raise self.retry(countdown=60 * 5, exc=exc)
- Although the task will never return above as `retry` raises an
- exception to notify the worker, we use `raise` in front of the
- retry to convey that the rest of the block won't be executed.
- args (Tuple): Positional arguments to retry with.
- kwargs (Dict): Keyword arguments to retry with.
- exc (Exception): Custom exception to report when the max retry
- limit has been exceeded (default:
- If this argument is set and retry is called while
- an exception was raised (``sys.exc_info()`` is set)
- it will attempt to re-raise the current exception.
- If no exception was raised it will raise the ``exc``
- argument provided.
- countdown (float): Time in seconds to delay the retry for.
- eta (~datetime.datetime): Explicit time and date to run the
- retry at.
- max_retries (int): If set, overrides the default retry limit for
- this execution. Changes to this parameter don't propagate to
- subsequent task retry attempts. A value of :const:`None`,
- means "use the default", so if you want infinite retries you'd
- have to set the :attr:`max_retries` attribute of the task to
- :const:`None` first.
- time_limit (int): If set, overrides the default time limit.
- soft_time_limit (int): If set, overrides the default soft
- time limit.
- throw (bool): If this is :const:`False`, don't raise the
- :exc:`~@Retry` exception, that tells the worker to mark
- the task as being retried. Note that this means the task
- will be marked as failed if the task raises an exception,
- or successful if it returns after the retry call.
- **options (Any): Extra options to pass on to :meth:`apply_async`.
- To tell the worker that the task has been re-sent for retry.
- This always happens, unless the `throw` keyword argument
- has been explicitly set to :const:`False`, and is considered
- normal operation.
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