code: def get_config_var(var):
      try:
          return sysconfig.get_config_var(var)
      except IOError as e:  # Issue #1074
          warnings.warn("{}".format(e), RuntimeWarning)
          return None
  
imports: from __future__ import absolute_import
  import distutils.util
  from distutils import log
  import platform
  import re
  import sys
  import sysconfig
  import warnings
  from collections import OrderedDict
  import glibc
label_desc: Use image node_id 1 for calling a global function with example usage: get_config_var(var) and returns: sysconfig, None