code: def _get_config_var(name, warn=False):
      # type: (str, bool) -> Union[int, str, None]
      value = sysconfig.get_config_var(name)
      if value is None and warn:
          logger.debug(
              "Config variable '%s' is unset, Python ABI tag may be incorrect",
              name,
          )
      return value
  
imports: from __future__ import absolute_import
  import distutils.util
  import collections
  import logging
  import os
  import platform
  import re
  import struct
  import sys
  import sysconfig
  import warnings
  from ._typing import TYPE_CHECKING, cast
label_desc: Use image node_id 3 for calling a global function with example usage: _get_config_var(name, warn) and returns: value