          self._queue = Queue()
          logger.debug("Initialized %s", self.__class__.__name__,)
  
      @property
      def complete(self):
          """ :class:`threading.Event`:  Event is set if the thread has completed its task,
          otherwise it is unset.
          """
          return self._complete
  
 
</s> remove         self._queue = Queue()
 </s> add         self._queue: Queue = Queue() </s> remove     def run(self):
 </s> add     def run(self) -> None: </s> remove def preview_trigger():
 </s> add def preview_trigger() -> PreviewTrigger: </s> remove         self.err = None
 </s> add         self.err: "_ErrorType" = None </s> remove     def root(self):
 </s> add     def root(self) -> tk.Tk:
    def complete(self) -> Event:
          self._queue = Queue()
          logger.debug("Initialized %s", self.__class__.__name__,)
  
      @property
    def complete(self) -> Event:
          """ :class:`threading.Event`:  Event is set if the thread has completed its task,
          otherwise it is unset.
          """
          return self._complete
  
keep keep keep keep replace keep keep keep keep keep
 Bugfix: Preview for extract in batch mode 
lib/gui/utils.py