Method pop_callback

src/transformers/trainer.py:4384–4398

Remove a callback from the current list of [`~transformers.TrainerCallback`] and returns it. If the callback is not found, returns `None` (and no error is raised). Args: callback (`type` or [`~transformers.TrainerCallback]`): A [`~transformers.Tra

(self, callback: type[TrainerCallback] | TrainerCallback)

        self.callback_handler.add_callback(callback)

    def pop_callback(self, callback: type[TrainerCallback] | TrainerCallback) -> TrainerCallback | None:
        """
        Remove a callback from the current list of [`~transformers.TrainerCallback`] and returns it.

        If the callback is not found, returns `None` (and no error is raised).

        Args:
           callback (`type` or [`~transformers.TrainerCallback]`):
               A [`~transformers.TrainerCallback`] class or an instance of a [`~transformers.TrainerCallback`]. In the
               first case, will pop the first member of that class found in the list of callbacks.

        Returns:
            [`~transformers.TrainerCallback`]: The callback removed, if found.
        """
        return self.callback_handler.pop_callback(callback)

    def remove_callback(self, callback: type[TrainerCallback] | TrainerCallback) -> None:
        """