code: def testList(self):
      f = ufunc_ext.UnaryCallable()
      a = range(5)
      b = f(a)
      assert_array_almost_equal(b / 2.0, a)
  
file_path: turicreate/src/external/boost/boost_1_68_0/libs/python/test/numpy/ufunc.py
imports: import ufunc_ext
  import unittest
  import numpy
  from numpy.testing.utils import assert_array_almost_equal
label_desc: Use image node_id 3 for calling the TestUnary obj's underlying member method code with example usage: obj.testList() without return types