exporter.py 文件源码

def save_exported_media_to_file(logger, export_dir, media_file, filename, extension):
    """
    Write exported media item to disk at specified location with specified file name.
    Any existing file with the same name will be overwritten.
    :param logger:      the logger
    :param export_dir:  path to directory for exports
    :param media_file:  media file to write to disc
    :param filename:    filename to give exported image
    :param extension:   extension to give exported image
    """
    if not os.path.exists(export_dir):
        logger.info("Creating directory at {0} for media files.".format(export_dir))
        os.makedirs(export_dir)
    file_path = os.path.join(export_dir, filename + '.' + extension)
    if os.path.isfile(file_path):
        logger.info('Overwriting existing report at ' + file_path)
    try:
        with open(file_path, 'wb') as out_file:
            shutil.copyfileobj(media_file.raw, out_file)
        del media_file
    except Exception as ex:
        log_critical_error(logger, ex, 'Exception while writing' + file_path + ' to file')