Class Celery

celery/app/base.py:248–1544

Celery application. Arguments: main (str): Name of the main module if running as `__main__`. This is used as the prefix for auto-generated task names. Keyword Arguments: broker (str): URL of the default broker used. backend (Union[str, Type[celery.backen

class Celery:
    """Celery application.

    Arguments:
        main (str): Name of the main module if running as `__main__`.
            This is used as the prefix for auto-generated task names.

    Keyword Arguments:
        broker (str): URL of the default broker used.
        backend (Union[str, Type[celery.backends.base.Backend]]):
            The result store backend class, or the name of the backend
            class to use.

            Default is the value of the :setting:`result_backend` setting.
        autofinalize (bool): If set to False a :exc:`RuntimeError`
            will be raised if the task registry or tasks are used before
            the app is finalized.
        set_as_current (bool):  Make this the global current app.
        include (List[str]): List of modules every worker should import.

        amqp (Union[str, Type[AMQP]]): AMQP object or class name.
        events (Union[str, Type[celery.app.events.Events]]): Events object or
            class name.
        log (Union[str, Type[Logging]]): Log object or class name.
        control (Union[str, Type[celery.app.control.Control]]): Control object
            or class name.
        tasks (Union[str, Type[TaskRegistry]]): A task registry, or the name of
            a registry class.
        fixups (List[str]): List of fix-up plug-ins (e.g., see
            :mod:`celery.fixups.django`).
        config_source (Union[str, class]): Take configuration from a class,
            or object.  Attributes may include any settings described in
            the documentation.
        task_cls (Union[str, Type[celery.app.task.Task]]): base task class to
            use. See :ref:`this section <custom-task-cls-app-wide>` for usage.
    """

    #: This is deprecated, use :meth:`reduce_keys` instead
    Pickler = AppPickler

    SYSTEM = platforms.SYSTEM
    IS_macOS, IS_WINDOWS = platforms.IS_macOS, platforms.IS_WINDOWS

    #: Name of the `__main__` module.  Required for standalone scripts.
    #:
    #: If set this will be used instead of `__main__` when automatically
    #: generating task names.
    main = None

    #: Custom options for command-line programs.
    #: See :ref:`extending-commandoptions`
    user_options = None

    #: Custom bootsteps to extend and modify the worker.
    #: See :ref:`extending-bootsteps`.
    steps = None

    builtin_fixups = BUILTIN_FIXUPS