code: def test_node_path_attribute_exists_not(self):
      t = self._build_tree()
      self.assertEqual(0, len(find_all(t, "//NameNode[not(@name)]")))
      self.assertEqual(2, len(find_all(t, "//NameNode[not(@honking)]")))
  
file_path: catboost/contrib/tools/cython/Cython/Compiler/Tests/TestTreePath.py
imports: import unittest
  from Cython.Compiler.Visitor import PrintTree
  from Cython.TestUtils import TransformTest
  from Cython.Compiler.TreePath import find_first, find_all
  from Cython.Compiler import Nodes, ExprNodes
label_desc: Use image node_id 10 for calling the TestTreePath obj's underlying member method code with example usage: obj.test_node_path_attribute_exists_not() without return types