  from __future__ import annotations
  import typing as T
  
  from .augmentation import ImageAugmentation
  from .generator import PreviewDataGenerator, TrainingDataGenerator
  from .preview_cv import PreviewBuffer, TriggerType
  
  if T.TYPE_CHECKING:
      from .preview_cv import PreviewBase
      Preview: type[PreviewBase]
 
</s> remove from lib.training import PreviewDataGenerator, TrainingDataGenerator
from lib.training.generator import BatchType, DataGenerator
 </s> add from lib.training import Feeder, LearningRateFinder </s> remove     from collections.abc import Callable, Generator
 </s> add     from collections.abc import Callable </s> remove # Ignore linting errors from Tensorflow's thoroughly broken import system
from tensorflow.keras import backend as K  # pylint:disable=import-error
from tensorflow.keras.layers import Input  # pylint:disable=import-error
from tensorflow.keras.models import load_model, Model as KModel  # noqa:E501  # pylint:disable=import-error

 </s> add 
from .generator import Feeder
from .lr_finder import LearningRateFinder
  from __future__ import annotations
  import typing as T
  
  from .augmentation import ImageAugmentation
from .generator import Feeder
from .lr_finder import LearningRateFinder
  from .preview_cv import PreviewBuffer, TriggerType
  
  if T.TYPE_CHECKING:
      from .preview_cv import PreviewBase
      Preview: type[PreviewBase]
keep keep keep keep replace keep keep keep keep keep
 Learning Rate finder (#1341)

* Add LR Finder support structure

* Move trainer.Feeder to lib.training.generator

* Expose model.io

* Add lr_finder

* Update docs and locales

* Pre-PR fixups
  - Fix training graph not displaying
  - CI fixes
  - Switch lr finder progress to tqdm
  - Exit lr finder early on NaN
  - Display lr finder progress in GUI 
lib/training/__init__.py