code: def _is_gcc(self):
      cc_var = sysconfig.get_config_var("CC")
      compiler = os.path.basename(shlex.split(cc_var)[0])
      return "gcc" in compiler or "g++" in compiler
  
imports: import os
  import sys
  import re
  import shlex
  import itertools
  from .None import sysconfig
  from ._modified import newer
  from .ccompiler import CCompiler, gen_preprocess_options, gen_lib_options
  from .errors import DistutilsExecError, CompileError, LibError, LinkError
  from ._log import log
  from ._macos_compat import compiler_fixup
label_desc: Use image node_id 6 for calling the UnixCCompiler obj's underlying member method code with example usage: obj._is_gcc() and returns: unknown