code: def __init__(self, fn, *args):
      self.fn = fn
      self.args = args
  
imports: from __future__ import absolute_import, print_function, division
  from copy import copy
  from functools import partial
  from theano.gof.utils import ANY_TYPE, comm_guard, FALL_THROUGH, iteritems
label_desc: Use image node_id 1 to create a new FVar object  with example: obj = FVar(fn)