          """
  
          logger.debug("Getting timestamps: (session_id: %s, is_training: %s)",
                       session_id, self._is_training)
          retval = dict()
          for idx in [session_id] if session_id else self.session_ids:
              self._check_cache(idx)
              data = self._cache.get_data(idx, "timestamps")
              if not data:
                  continue
 
</s> remove         retval = dict()
 </s> add         retval = {} </s> remove         if not data:
            logger.debug("No data to cache")
            return
 </s> add  </s> remove         retval = dict()
 </s> add         retval = {} </s> remove         retval = dict()
 </s> add         retval = {} </s> remove         self._carry_over = dict()
 </s> add         self._carry_over = {}
        retval = {}
          """
  
          logger.debug("Getting timestamps: (session_id: %s, is_training: %s)",
                       session_id, self._is_training)
        retval = {}
          for idx in [session_id] if session_id else self.session_ids:
              self._check_cache(idx)
              data = self._cache.get_data(idx, "timestamps")
              if not data:
                  continue
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/analysis/event_reader.py