code: def test_is_number(self):
      self.assertTrue(is_number(1))
      self.assertFalse(is_number("one"))
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import edward
  import numpy
  import tensorflow
  from edward.inferences.conjugacy.simplify import *
  from edward.inferences.conjugacy.simplify import _mul_n
label_desc: Use image node_id 2 for calling the test_simplify_class obj's underlying member method code with example usage: obj.test_is_number() without return types