'apply options passed through the configuration file'

def apply_options(self, prog_name, argv):

    argv = list(filter(self.is_flower_option, argv))
    parse_command_line(([prog_name] + argv))
    try:
        parse_config_file(os.path.abspath(options.conf), final=False)
        parse_command_line(([prog_name] + argv))
    except IOError:
        if (os.path.basename(options.conf) != DEFAULT_CONFIG_FILE):
            raise
