How to use the green.config.ConfigFile function in green

filepaths.append(filepath)

    if filepaths:
        global files_loaded
        files_loaded = filepaths
        # Python 3 has parser.read_file(iterator) while Python2 has
        # parser.readfp(obj_with_readline)
        read_func = getattr(parser, 'read_file', getattr(parser, 'readfp'))
        for filepath in filepaths:
            # Users are expected to put a [green] section
            # only if they use setup.cfg
            if filepath.endswith('setup.cfg'):
                with open(filepath) as f:
                    read_func(f)
            else:
                read_func(ConfigFile(filepath))

    return parser