code: def get_config_var(name):
      """Return the value of a single variable using the dictionary
      returned by 'get_config_vars()'.  Equivalent to
      get_config_vars().get(name)
      """
      if name == "SO":
          import warnings
  
          warnings.warn(
              "SO is deprecated, use EXT_SUFFIX", DeprecationWarning, 2
          )
      return get_config_vars().get(name)
  
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 21 for calling a global function with example usage: get_config_var(name) and returns: get_config_vars