          ``True`` if pop-up preview window has been requested otherwise ``False``
      """
      def __init__(self, use_preview: bool) -> None:
          self._active = use_preview
          self._triggers: TriggerType = dict(toggle_mask=Event(),
                                             refresh=Event(),
                                             save=Event(),
                                             quit=Event(),
                                             shutdown=Event())
          self._buffer = PreviewBuffer()
          self._thread = self._launch_thread()
  
      @property
      def buffer(self) -> PreviewBuffer:
 
</s> remove     def pre_encode(self) -> T.Optional[T.Callable[[np.ndarray], T.List[bytes]]]:
 </s> add     def pre_encode(self) -> Callable[[np.ndarray], list[bytes]] | None: </s> remove                  triggers: Optional[TriggerType] = None) -> None:
 </s> add                  triggers: TriggerType | None = None) -> None: </s> remove     def __init__(self, parent: tk.Frame, taskbar: Optional[ttk.Frame]) -> None:
 </s> add     def __init__(self, parent: tk.Frame, taskbar: ttk.Frame | None) -> None: </s> remove     def __init__(self, arguments: "Namespace", is_group: bool = False) -> None:
 </s> add     def __init__(self, arguments: Namespace, is_group: bool = False) -> None: </s> remove     def __init__(self, arguments: "Namespace", is_group: bool = False) -> None:
 </s> add     def __init__(self, arguments: Namespace, is_group: bool = False) -> None:
        self._triggers: TriggerType = {"toggle_mask": Event(),
                                       "refresh": Event(),
                                       "save": Event(),
                                       "quit": Event(),
                                       "shutdown": Event()}
          ``True`` if pop-up preview window has been requested otherwise ``False``
      """
      def __init__(self, use_preview: bool) -> None:
          self._active = use_preview
        self._triggers: TriggerType = {"toggle_mask": Event(),
                                       "refresh": Event(),
                                       "save": Event(),
                                       "quit": Event(),
                                       "shutdown": Event()}
        self._triggers: TriggerType = {"toggle_mask": Event(),
                                       "refresh": Event(),
                                       "save": Event(),
                                       "quit": Event(),
                                       "shutdown": Event()}
        self._triggers: TriggerType = {"toggle_mask": Event(),
                                       "refresh": Event(),
                                       "save": Event(),
                                       "quit": Event(),
                                       "shutdown": Event()}
        self._triggers: TriggerType = {"toggle_mask": Event(),
                                       "refresh": Event(),
                                       "save": Event(),
                                       "quit": Event(),
                                       "shutdown": Event()}
        self._triggers: TriggerType = {"toggle_mask": Event(),
                                       "refresh": Event(),
                                       "save": Event(),
                                       "quit": Event(),
                                       "shutdown": Event()}
          self._buffer = PreviewBuffer()
          self._thread = self._launch_thread()
  
      @property
      def buffer(self) -> PreviewBuffer:
keep keep keep keep replace replace replace replace 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 
scripts/train.py