263             self.startvals[topic] = pos - newdelta

   263             self.startvals[topic] = pos - newdelta

   264             self.starttimes[topic] = now - interval

   264             self.starttimes[topic] = now - interval

   265 

   265 

   266     def progress(self, topic, pos, item='', unit='', total=None):

   266     def progress(self, topic, pos, item='', unit='', total=None):

   267         now = time.time()

   267         now = time.time()

   270             if pos is None:

   269             if pos is None:

   271                 self.starttimes.pop(topic, None)

   270                 self.starttimes.pop(topic, None)

   272                 self.startvals.pop(topic, None)

   271                 self.startvals.pop(topic, None)

   273                 self.topicstates.pop(topic, None)

   272                 self.topicstates.pop(topic, None)

   274                 # reset the progress bar if this is the outermost topic

   273                 # reset the progress bar if this is the outermost topic

   296                 self._calibrateestimate(topic, now, pos)

   295                 self._calibrateestimate(topic, now, pos)

   297                 if now - self.lastprint >= self.refresh and self.topics:

   296                 if now - self.lastprint >= self.refresh and self.topics:

   298                     if self._oktoprint(now):

   297                     if self._oktoprint(now):

   299                         self.lastprint = now

   298                         self.lastprint = now

   300                         self.show(now, topic, *self.topicstates[topic])

   299                         self.show(now, topic, *self.topicstates[topic])