code: def setUp(self):
      self.rng = np.random.RandomState(0)
  
file_path: Theano/theano/d3viz/tests/test_formatting.py
imports: from __future__ import absolute_import, print_function, division
  import numpy
  import unittest
  import theano
  from theano.d3viz.formatting import PyDotFormatter
  from theano.d3viz.tests import models
  from nose.plugins.skip import SkipTest
  from theano.d3viz.formatting import pydot_imported, pydot_imported_msg
label_desc: Use image node_id 1 for calling the TestPyDotFormatter obj's underlying member method code with example usage: obj.setUp() without return types