code: def _update_console(self, value=None):
          
  
          if self._total == 0:
              frac = 1.0
          else:
              frac = float(value) / float(self._total)
  
          file = self._file
          write = file.write
  
          if frac > 1:
              bar_fill = int(self._bar_length)
          else:
              bar_fill = int(float(self._bar_length) * frac)
          write('\r|')
          color_print('=' * bar_fill, 'blue', file=file, end='')
          if bar_fill < self._bar_length:
              color_print('>', 'green', file=file, end='')
              write('-' * (self._bar_length - bar_fill - 1))
          write('|')
  
          if value >= self._total:
              t = time.time() - self._start_time
              prefix = '     '
          elif value <= 0:
              t = None
              prefix = ''
          else:
              t = ((time.time() - self._start_time) * (1.0 - frac)) / frac
              prefix = ' ETA '
          write(' {0:>4s}/{1:>4s}'.format(
              human_file_size(value),
              self._human_total))
          write(' ({0:>6s}%)'.format('{0:.2f}'.format(frac * 100.0)))
          write(prefix)
          if t is not None:
              write(human_time(t))
          self._file.flush()
docs: Update the progress bar to the given value (out of the total
          given to the constructor).