def METHOD_NAME(ini_file, section, output_dir,
                                      config_file_name):
    """
    Parse and collapse a ConfigParser-Style ini file into a nested,
    eval'ing the individual values, as they are assumed to be valid
    python statement formatted
    :param ini_file: Path of INI file
    :param section: section of ini which to be update
    :param output_dir: value of output_dir
    :return: None
    """
    ini_config = ConfigParser()
    ini_config.read(ini_file)
    try:
        # add section in INI file
        ini_config.add_section(section)
    except:
        pass
    ini_config.set(section, 'output_dir', output_dir)
    ini_config.set(section, 'config_file_name', config_file_name)
    with open(ini_file, 'w') as configfile:  # save
        ini_config.write(configfile)