'--write-thumbnail',
action='store_true', dest='writethumbnail', default=False,
help='write thumbnail image to disk')
+ thumbnail.add_option(
+ '--write-all-thumbnails',
+ action='store_true', dest='write_all_thumbnails', default=False,
+ help='write all thumbnail image formats to disk')
thumbnail.add_option(
'--list-thumbnails',
action='store_true', dest='list_thumbnails', default=False,