code: def print_active_threads (self):
          
          debug = log.is_debug(LOG_CHECK)
          if debug:
              first = True
              for name in self.get_check_threads():
                  if first:
                      log.info(LOG_CHECK, _("These URLs are still active:"))
                      first = False
                  log.info(LOG_CHECK, name[12:])
          args = dict(
              num=len([x for x in self.threads if x.getName().startswith("CheckThread-")]),
              timeout=strformat.strduration_long(self.config["aborttimeout"]),
          )
          log.info(LOG_CHECK, _("%(num)d URLs are still active. After a timeout of %(timeout)s the active URLs will stop.") % args)
docs: Log all currently active threads.