code: def train_end(self, network):
      if network.last_epoch != self.last_epoch_shown:
          self.print_last_error(network)
  
imports: from __future__ import unicode_literals
  import time
  import progressbar
  from neupy.utils import iters
label_desc: Use image node_id 7 for calling the PrintLastErrorSignal obj's underlying member method code with example usage: obj.train_end(network) without return types