          """
          meta = self._alignments.video_meta_data
          has_meta = all(val is not None for val in meta.values())
          if has_meta:
              retval: Optional[int] = len(cast(Dict[str, Union[List[int], List[float]]],
                                          meta["pts_time"]))
          else:
              retval = None
          logger.debug("Frame count from alignments file: (has_meta: %s, %s", has_meta, retval)
          return retval
  
 
</s> remove             retval: Optional[tk.Frame] = frame
 </s> add             retval: tk.Frame | None = frame </s> remove         retval: T.Optional[T.Callable[[np.ndarray],
                           T.List[bytes]]] = None if test is None else self._writer.pre_encode
 </s> add         retval: Callable[[np.ndarray],
                         list[bytes]] | None = None if test is None else self._writer.pre_encode </s> remove         retval = dict(pts_time=pts_time, keyframes=keyframes)
 </s> add         retval = {"pts_time": pts_time, "keyframes": keyframes} </s> remove             retval: List[str] = list(set(loss_key
 </s> add             retval: list[str] = list(set(loss_key </s> remove             queue = cast("EventQueue", args[0])
 </s> add             queue = T.cast("EventQueue", args[0])
            retval: int | None = len(T.cast(dict[str, list[int] | list[float]], meta["pts_time"]))
          """
          meta = self._alignments.video_meta_data
          has_meta = all(val is not None for val in meta.values())
          if has_meta:
            retval: int | None = len(T.cast(dict[str, list[int] | list[float]], meta["pts_time"]))
            retval: int | None = len(T.cast(dict[str, list[int] | list[float]], meta["pts_time"]))
          else:
              retval = None
          logger.debug("Frame count from alignments file: (has_meta: %s, %s", has_meta, retval)
          return retval
  
keep keep keep keep 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 
tools/alignments/jobs_frames.py