Method init_failure

lib/sqlalchemy/orm/events.py:370–401

Receive an instance when its constructor has been called, and raised an exception. This method is only called during a userland construction of an object, in conjunction with the object's constructor, e.g. its ``__init__`` method. It is not called when an object is l

(self, target: _O, args: Any, kwargs: Any)

        """

    def init_failure(self, target: _O, args: Any, kwargs: Any) -> None:
        """Receive an instance when its constructor has been called,
        and raised an exception.

        This method is only called during a userland construction of
        an object, in conjunction with the object's constructor, e.g.
        its ``__init__`` method. It is not called when an object is loaded
        from the database.

        The event is invoked after an exception raised by the ``__init__``
        method is caught.  After the event
        is invoked, the original exception is re-raised outwards, so that
        the construction of the object still raises an exception.   The
        actual exception and stack trace raised should be present in
        ``sys.exc_info()``.

        :param target: the mapped instance.  If
         the event is configured with ``raw=True``, this will
         instead be the :class:`.InstanceState` state-management
         object associated with the instance.
        :param args: positional arguments that were passed to the ``__init__``
         method.
        :param kwargs: keyword arguments that were passed to the ``__init__``
         method.

        .. seealso::

            :meth:`.InstanceEvents.init`

            :meth:`.InstanceEvents.load`

        """

    def _sa_event_merge_wo_load(
        self, target: _O, context: QueryContext