code: def _python_build():
      if _sys_home:
          return _is_python_source_dir(_sys_home)
      return _is_python_source_dir(project_base)
  
imports: import os
  import re
  import sys
  import sysconfig
  import pathlib
  from .errors import DistutilsPlatformError
  from .None import py39compat
  from ._functools import pass_none
label_desc: Use image node_id 3 for calling a global function with example usage: _python_build() and returns: _is_python_source_dir, _is_python_source_dir