code: def test_name_resolution(self):
      import logging
      import logging.handlers
  
      success_cases = (
          ("os", os),
          ("os.path", os.path),
          ("os.path:pathsep", os.path.pathsep),
          ("logging", logging),
          ("logging:", logging),
          ("logging.handlers", logging.handlers),
          ("logging.handlers:", logging.handlers),
          (
              "logging.handlers:SysLogHandler",
              logging.handlers.SysLogHandler,
          ),
          (
              "logging.handlers.SysLogHandler",
              logging.handlers.SysLogHandler,
          ),
          (
              "logging.handlers:SysLogHandler.LOG_ALERT",
              logging.handlers.SysLogHandler.LOG_ALERT,
          ),
          (
              "logging.handlers.SysLogHandler.LOG_ALERT",
              logging.handlers.SysLogHandler.LOG_ALERT,
          ),
          ("builtins.int", int),
          ("builtins:int", int),
          ("builtins.int.from_bytes", int.from_bytes),
          ("builtins:int.from_bytes", int.from_bytes),
          ("builtins.ZeroDivisionError", ZeroDivisionError),
          ("builtins:ZeroDivisionError", ZeroDivisionError),
          ("os:path", os.path),
      )
  
      failure_cases = (
          (None, TypeError),
          (1, TypeError),
          (2.0, TypeError),
          (True, TypeError),
          ("", ValueError),
          ("?abc", ValueError),
          ("abc/foo", ValueError),
          ("foo", ImportError),
          ("os.foo", AttributeError),
          ("os.foo:", ImportError),
          ("os.pth:pathsep", ImportError),
          ("logging.handlers:NoSuchHandler", AttributeError),
          (
              "logging.handlers:SysLogHandler.NO_SUCH_VALUE",
              AttributeError,
          ),
          (
              "logging.handlers.SysLogHandler.NO_SUCH_VALUE",
              AttributeError,
          ),
          ("ZeroDivisionError", ImportError),
          ("os.path.9abc", ValueError),
          ("9abc", ValueError),
      )
  
      # add some Unicode package names to the mix.
  
      unicode_words = (
          "\u0935\u092e\u0938",
          "\xe9",
          "\xc8",
          "\uc548\ub155\ud558\uc138\uc694",
          "\u3055\u3088\u306a\u3089",
          "\u3042\u308a\u304c\u3068\u3046",
          "\u0425\u043e\u0440\u043e\u0448\u043e",
          "\u0441\u043f\u0430\u0441\u0438\u0431\u043e",
          "\u73b0\u4ee3\u6c49\u8bed\u5e38\u7528\u5b57\u8868",
      )
  
      for uw in unicode_words:
          d = os.path.join(self.dirname, uw)
          try:
              os.makedirs(d, exist_ok=True)
          except UnicodeEncodeError:
              # When filesystem encoding cannot encode uw: skip this test
              continue
          # make an empty __init__.py file
          f = os.path.join(d, "__init__.py")
          with open(f, "w") as f:
              f.write("")
              f.flush()
          # now import the package we just created; clearing the caches is
          # needed, otherwise the newly created package isn't found
          importlib.invalidate_caches()
          mod = importlib.import_module(uw)
          success_cases += ((uw, mod),)
          if len(uw) > 1:
              failure_cases += ((uw[:-1], ImportError),)
  
      # add an example with a Unicode digit at the start
      failure_cases += (("\u0966\u0935\u092e\u0938", ValueError),)
  
      for s, expected in success_cases:
          with self.subTest(s=s):
              o = pkgutil.resolve_name(s)
              self.assertEqual(o, expected)
  
      for s, exc in failure_cases:
          with self.subTest(s=s):
              with self.assertRaises(exc):
                  pkgutil.resolve_name(s)
  
imports: from pathlib import Path
  from test.support.import_helper import unload, CleanImport
  from test.support.warnings_helper import check_warnings, ignore_warnings
  import unittest
  import sys
  import importlib
  from importlib.util import spec_from_file_location
  import pkgutil
  import os
  import os.path
  import tempfile
  import shutil
  import zipfile
label_desc: Use image node_id 10 for calling the PkgutilTests obj's underlying member method code with example usage: obj.test_name_resolution() without return types