                  if tag == "batch_total":
                      timestamps.append(event.wall_time)
                      continue
  
                  lbl = tag.replace("batch_", "")
                  if lbl not in labels:
                      labels.append(lbl)
  
                  step.append(summary.simple_value)
  
 
</s> remove                 if tag == "batch_total":
 </s> add                 # Pre tf2.3 totals were "batch_total"
                if tag in ("batch_loss", "batch_total"): </s> remove                     loss.append(step)
 </s> add                     if last_step != 0:
                        loss.append(step)
                # tf2.3 stopped respecting loss names in tensorboard callback so rewrite
                lbl_split = tag.replace("batch_", "").replace("_loss", "").split("_")
                if lbl_split[-1] in ("a", "b"):
                    lbl = "face_{}".format(lbl_split[-1])
                else:
                    lbl = "mask_{}".format(lbl_split[-2])
                  if tag == "batch_total":
                      timestamps.append(event.wall_time)
                      continue
  
                # tf2.3 stopped respecting loss names in tensorboard callback so rewrite
                lbl_split = tag.replace("batch_", "").replace("_loss", "").split("_")
                if lbl_split[-1] in ("a", "b"):
                    lbl = "face_{}".format(lbl_split[-1])
                else:
                    lbl = "mask_{}".format(lbl_split[-2])
                  if lbl not in labels:
                      labels.append(lbl)
  
                  step.append(summary.simple_value)
  
keep keep keep keep replace keep keep keep keep keep
 Update to TF2.3 (#1100)

* Minimum requirements to tf2.3.
  - Handle upgrades for Windows users with tf2.2 installed by Pip
  - Handle windows upgrade from pip tf2.2
  - Explicitly install Cuda for Conda installs

* Update tensorflow errors api reference
* Suppress AutoGraph warning messages
* Update GUI Stats to work with tf2.3
* Fix live graph for tf2.3
* DSSIMObjective - autoGraph bugfix
* Update Travis test 
lib/gui/stats.py