code: def _get_build_dir(self):
      # Get the package directory from build_py
      build_py = self.get_finalized_command("build_py")
      return build_py.get_package_dir("pyarrow")
  
imports: import contextlib
  import os
  import os.path
  from os.path import join
  import re
  import shlex
  import sys
  import pkg_resources
  from setuptools import setup, Extension, Distribution, find_namespace_packages
  from Cython.Distutils import build_ext
  import Cython
label_desc: Use image node_id 6 for calling the build_ext obj's underlying member method code with example usage: obj._get_build_dir() and returns: build_py