code: def init(self):
          '''
          (re)initialize values to original state so the progressbar can be
          used (again)
          '''
          self.previous_value = None
          self.last_update_time = None
          self.start_time = None
          self.updates = 0
          self.end_time = None
          self.extra = dict()
          self._last_update_timer = timeit.default_timer(f init(self):
          '''
          (re)initialize values to original state so the progressbar can be
          used (again)
          '''
          self.previous_value = None
          self.last_update_time = None
          self.start_time = None
          self.updates = 0
          self.end_time = None
          self.extra = dict()
          self._last_update_timer = timeit.default_timer()
docs: (re)initialize values to original state so the progressbar can be
          used (again)