code: def test_subdir_is_dir(self, alpharep):
      root = zipfile.Path(alpharep)
      assert (root / "b").is_dir()
      assert (root / "b/").is_dir()
      assert (root / "g").is_dir()
      assert (root / "g/").is_dir()
  
imports: import io
  import itertools
  import contextlib
  import pathlib
  import pickle
  import sys
  import unittest
  import zipfile
  from ._functools import compose
  from ._itertools import Counter
  from ._test_params import parameterize, Invoked
  from test.support.os_helper import temp_dir
label_desc: Use image node_id 6 for calling the TestPath obj's underlying member method code with example usage: obj.test_subdir_is_dir(alpharep) without return types