code: def update_status(self):
          
          try:
              # all this may fail if the connection to the fritzbox is down
              self.update_connection_status()
              self.max_stream_rate.set(self.get_stream_rate_str())
              self.ip.set(self.status.external_ip)
              self.uptime.set(self.status.str_uptime)
              upstream, downstream = self.status.transmission_rate
          except IOError:
              # here we inform the user about being unable to
              # update the status informations
              pass
          else:
              # max_downstream and max_upstream may be zero if the
              # fritzbox is configured as ip-client.
              if self.max_downstream > 0:
                  self.in_meter.set_fraction(
                      1.0 * downstream / self.max_downstream)
              if self.max_upstream > 0:
                  self.out_meter.set_fraction(1.0 * upstream / self.max_upstream)
              self.update_traffic_info()
          self.after(1000, self.update_status)
docs: Update status informations in tkinter window.