                         for side, avg in zip(("a", "b"), save_averages)]
              msg += f" - Average loss since last save: {', '.join(lossmsg)}"
          logger.info(msg)
  
      def _get_save_averages(self) -> T.List[float]:
          """ Return the average loss since the last save iteration and reset historical loss """
          logger.debug("Getting save averages")
          if not all(loss for loss in self._history):
              logger.debug("No loss in history")
              retval = []
 
</s> remove     def _should_backup(self, save_averages: T.List[float]) -> bool:
 </s> add     def _should_backup(self, save_averages: list[float]) -> bool: </s> remove     def add_history(self, loss: T.List[float]) -> None:
 </s> add     def add_history(self, loss: list[float]) -> None: </s> remove     def _set_loss_functions(self, output_names: T.List[str]):
 </s> add     def _set_loss_functions(self, output_names: list[str]): </s> remove     def history(self) -> T.List[T.List[float]]:
 </s> add     def history(self) -> list[list[float]]: </s> remove     def _get_newest_filenames(self, image_files: List[str]) -> List[str]:
 </s> add     def _get_newest_filenames(self, image_files: list[str]) -> list[str]:
    def _get_save_averages(self) -> list[float]:
                         for side, avg in zip(("a", "b"), save_averages)]
              msg += f" - Average loss since last save: {', '.join(lossmsg)}"
          logger.info(msg)
  
    def _get_save_averages(self) -> list[float]:
          """ Return the average loss since the last save iteration and reset historical loss """
          logger.debug("Getting save averages")
          if not all(loss for loss in self._history):
              logger.debug("No loss in history")
              retval = []
keep keep keep keep replace keep keep keep keep keep
 Rebase code (#1326)

* Remove tensorflow_probability requirement

* setup.py - fix progress bars

* requirements.txt: Remove pre python 3.9 packages

* update apple requirements.txt

* update INSTALL.md

* Remove python<3.9 code

* setup.py - fix Windows Installer

* typing: python3.9 compliant

* Update pytest and readthedocs python versions

* typing fixes

* Python Version updates
  - Reduce max version to 3.10
  - Default to 3.10 in installers
  - Remove incompatible 3.11 tests

* Update dependencies

* Downgrade imageio dep for Windows

* typing: merge optional unions and fixes

* Updates
  - min python version 3.10
  - typing to python 3.10 spec
  - remove pre-tf2.10 code
  - Add conda tests

* train: re-enable optimizer saving

* Update dockerfiles

* Update setup.py
  - Apple Conda deps to setup.py
  - Better Cuda + dependency handling

* bugfix: Patch logging to prevent Autograph errors

* Update dockerfiles

* Setup.py - Setup.py - stdout to utf-8

* Add more OSes to github Actions

* suppress mac-os end to end test 
plugins/train/model/_base/io.py