code: def __str__(self):
      return "%s{%s, %s, %s}" % (
          self.__class__.__name__,
          self.data.start,
          self.data.stop,
          self.data.step,
      )
  
imports: from __future__ import absolute_import, print_function, division
  import numpy
  import theano
  from theano.gof import Apply, Constant, Generic, Op, Type, hashtype
  from theano.gradient import DisconnectedType
label_desc: Use image node_id 3 for calling the SliceConstant obj's underlying member method code with example usage: obj.__str__() and returns: unknown