code: def set_style(self, input_feeds):
      
      sess = tf.get_default_session()
      computed = sess.run(self.input_grams, input_feeds)
      for v, g in zip(self.target_vars, computed):
        v.load(g)
docs: Set target style variables.
      
      Expected usage: 
        style_loss = StyleLoss(style_layers)
        ...
        init_op = tf.global_variables_initializer()
        init_op.run()
        
        feeds = {... session.run() 'feeds' argument that will make 'style_layers'
                 tensors evaluate to activation values of style image...}
        style_loss.set_style(feeds)  # this must be called after 'init_op.run()'