          """ Extract files from zipfile and write, with progress bar """
          length = sum(f.file_size for f in zip_file.infolist())
          fnames = zip_file.namelist()
          self.logger.debug("Zipfile: Filenames: %s, Total Size: %s", fnames, length)
          pbar = tqdm(desc="Extracting", unit="B", total=length, unit_scale=True, unit_divisor=1024)
          for fname in fnames:
              out_fname = os.path.join(self.cache_dir, fname)
              self.logger.debug("Extracting from: '%s' to '%s'", self._model_zip_path, out_fname)
              zipped = zip_file.open(fname)
              with open(out_fname, "wb") as out_file:
 
</s> remove                  for f in os.listdir(imgpath) if f.endswith((".png", ".jpg"))]
 </s> add                  for f in os.listdir(imgpath) if f.lower().endswith((".png", ".jpg"))] </s> remove             msg = "No data to display. Not refreshing"
            logger.debug(msg)
            print(msg)
 </s> add             return False
        return True

    def check_valid_data(self):
        """ Check that the selections holds valid data to display
            NB: len-as-condition is used as data could be a list or a numpy array
        """
        logger.debug("Validating data. %s",
                     {key: len(val) for key, val in self.display_data.stats.items()})
        if any(len(val) == 0  # pylint:disable=len-as-condition
               for val in self.display_data.stats.values()): </s> remove             if region == "tree":
                self.data_popup()
 </s> add             if region == "tree" and self.check_valid_data(values):
                datapoints = int(values[self.columns.index("iterations")])
                self.data_popup(datapoints)

    def check_valid_data(self, values):
        """ Check there is valid data available for popping up a graph """
        col_indices = [self.columns.index("batch"), self.columns.index("iterations")]
        for idx in col_indices:
            if (isinstance(values[idx], int) or values[idx].isdigit()) and int(values[idx]) == 0:
                logger.warning("No data to graph for selected session")
                return False
        return True

    def data_popup(self, datapoints):
        """ Pop up a window and control it's position </s> remove def initialize_config(cli_opts, scaling_factor, pathcache, statusbar, session):
 </s> add def initialize_config(root, cli_opts, scaling_factor, pathcache, statusbar, session):
        pbar = tqdm(desc="Decompressing",
                    unit="B",
                    total=length,
                    unit_scale=True,
                    unit_divisor=1024)
          """ Extract files from zipfile and write, with progress bar """
          length = sum(f.file_size for f in zip_file.infolist())
          fnames = zip_file.namelist()
          self.logger.debug("Zipfile: Filenames: %s, Total Size: %s", fnames, length)
        pbar = tqdm(desc="Decompressing",
                    unit="B",
                    total=length,
                    unit_scale=True,
                    unit_divisor=1024)
          for fname in fnames:
              out_fname = os.path.join(self.cache_dir, fname)
              self.logger.debug("Extracting from: '%s' to '%s'", self._model_zip_path, out_fname)
              zipped = zip_file.open(fname)
              with open(out_fname, "wb") as out_file:
keep keep keep keep replace keep keep keep keep keep
 GUI Fixups

- Analysis: Handle missing session Ids
- Analysis: Handle invalid data selections
- Analysis: Don't update graph on check box selection
- Analysis: Add cursor events to analysis tab
- Analysis: Change default graph view
- Training: Prevent GUI from attempting to close graphs which do not exist
- Extract/Convert: Make file extensions case-insensitive for preview
- Progress bar: Make compatible for downloads
- Progress bar: Add TQDM Description to progress bar stats text 
lib/utils.py