code: def __call__(self, x):
      W, b = map(dy.parameter, [self.W, self.b])
      return self.act(W * x + b)
  
imports: from __future__ import print_function
  import dynet
  import numpy
  import os
label_desc: Use image node_id 2 for calling the Transfer obj's underlying member method code with example usage: obj.__call__(x) and returns: self