code: def test_attribute_access(self):
      assert_equal(self.result.x, 1)
      assert_equal(self.result.y, 2)
      assert_equal(self.result.z, 3)
      assert_equal(self.result.w, 99)
      assert_equal(self.result.beta, 0.5)
  
imports: import pytest
  import pickle
  from numpy.testing import assert_equal
  from scipy._lib._bunch import _make_tuple_bunch
label_desc: Use image node_id 2 for calling the TestMakeTupleBunch obj's underlying member method code with example usage: obj.test_attribute_access() without return types