code: def read_stats(self):
          
  
          self.statistics = TgnObjectsDict()
          for port in self.session.ports.values():
              for tpld in port.tplds.values():
                  self.statistics[tpld] = tpld.read_stats()
          return self.statistics
docs: Read current statistics from chassis.
  
          :return: dictionary {tpld full index {group name {stat name: stat value}}}