code: def _progress_update(self, numerator_increment, stage=0, show_eta=True, **kw):
          
          if not self.show_progress:
              return
  
          self.__check_stage_registered(stage)
  
          if not self._prog_rep_progressbars[stage]:
              return
  
          pg = self._prog_rep_progressbars[stage]
          pg.update(int(numerator_increment))
docs: Updates the progress. Will update progress bars or other progress output.
  
          Parameters
          ----------
          numerator : int
              numerator of partial work done already in current stage
          stage : int, nonnegative, default=0
              Current stage of the algorithm, 0 or greater