code: def update_end(self, network):
      self.index += 1
      self.bar.update(self.index, loss=self.last_train_error)
  
imports: from __future__ import unicode_literals
  import time
  import progressbar
  from neupy.utils import iters
label_desc: Use image node_id 4 for calling the ProgressbarSignal obj's underlying member method code with example usage: obj.update_end(network) without return types