              mask on and off
           """
          trigger = self._trigger_files[trigger_type]
          if not os.path.isfile(trigger):
              with open(trigger, "w"):
                  pass
              logger.debug("Set preview trigger: %s", trigger)
  
      def clear(self, trigger_type=None):
          """ Remove the trigger file from the cache folder.
 
</s> remove         filename = os.path.join(location,
                                "{}_{}.{}".format(filename,
                                                  now,
                                                  "png"))
 </s> add         filename = os.path.join(location, f"{filename}_{now}.png") </s> remove             zip_file = zipfile.ZipFile(self._model_zip_path, "r")
            self._write_model(zip_file)
 </s> add             with zipfile.ZipFile(self._model_zip_path, "r") as zip_file:
                self._write_model(zip_file) </s> remove                     print("Error reading the preview file for {}".format(name))
 </s> add                     print(f"Error reading the preview file for {name}") </s> remove class GetModel():  # Pylint:disable=too-few-public-methods
 </s> add class GetModel():  # pylint:disable=too-few-public-methods </s> remove         self._carry_over = dict()
 </s> add         self._carry_over = {}
            with open(trigger, "w", encoding="utf8"):
              mask on and off
           """
          trigger = self._trigger_files[trigger_type]
          if not os.path.isfile(trigger):
            with open(trigger, "w", encoding="utf8"):
                  pass
              logger.debug("Set preview trigger: %s", trigger)
  
      def clear(self, trigger_type=None):
          """ Remove the trigger file from the cache folder.
keep keep keep keep replace keep keep keep keep keep
 Update code to support Tensorflow versions up to 2.8 (#1213)

* Update maximum tf version in setup + requirements

* - bump max version of tf version in launcher
- standardise tf version check

* update keras get_custom_objects  for tf>2.6

* bugfix: force black text in GUI file dialogs (linux)

* dssim loss - Move to stock tf.ssim function

* Update optimizer imports for compatibility

* fix logging for tf2.8

* Fix GUI graphing for TF2.8

* update tests

* bump requirements.txt versions

* Remove limit on nvidia-ml-py

* Graphing bugfixes
  - Prevent live graph from displaying if data not yet available

* bugfix: Live graph. Collect loss labels correctly

* fix: live graph - swallow inconsistent loss errors

* Bugfix: Prevent live graph from clearing during training

* Fix graphing for AMD 
lib/gui/utils.py