code: def test_unix_getnode(self):
      if not importable("_uuid") and not importable("ctypes"):
          self.skipTest("neither _uuid extension nor ctypes available")
      try:  # Issues 1481, 3581: _uuid_generate_time() might be None.
          node = self.uuid._unix_getnode()
      except TypeError:
          self.skipTest("requires uuid_generate_time")
      self.check_node(node, "unix")
  
imports: import unittest
  from test import support
  from test.support import import_helper
  import builtins
  import contextlib
  import copy
  import enum
  import io
  import os
  import pickle
  import sys
  import weakref
  from unittest import mock
label_desc: Use image node_id 1 for calling the TestInternalsWithExtModule obj's underlying member method code with example usage: obj.test_unix_getnode() without return types