code: def distutils_dir_name(dname):
      
      f = "{dirname}.{platform}-{version[0]}.{version[1]}"
      return f.format(dirname=dname,
                      platform=sysconfig.get_platform(),
                      version=sys.version_info)
docs: Returns the name of a distutils build directory
      see: http://stackoverflow.com/questions/14320220/
                 testing-python-c-libraries-get-build-path