code: def __get_output_extensions(self):
      yield ".py"
      yield ".pyc"
      if self.get_finalized_command("build_py").optimize:
          yield ".pyo"
  
imports: import os
  import sys
  import itertools
  from importlib.machinery import EXTENSION_SUFFIXES
  from importlib.util import cache_from_source
  from typing import Dict, Iterator, List, Tuple
  from pathlib import Path
  from distutils.command.build_ext import build_ext
  from distutils.ccompiler import new_compiler
  from distutils.sysconfig import customize_compiler, get_config_var
  from distutils import log
  from setuptools.errors import BaseError
  from setuptools.extension import Extension, Library
  from distutils.sysconfig import _config_vars
label_desc: Use image node_id 18 for calling the build_ext obj's underlying member method code with example usage: obj.__get_output_extensions() without return types