code: def build_extension(self, ext):
      mkpath(self.build_lib)
      copy_file(ext.sources[0], self.get_ext_fullpath(ext.name))
  
imports: from setuptools import setup, Extension
  from distutils.command.build_ext import build_ext
  from distutils.dir_util import mkpath
  from distutils.file_util import copy_file
label_desc: Use image node_id 1 for calling the CopyBuild obj's underlying member method code with example usage: obj.build_extension(ext) without return types