action='store_true', dest='list_extractor_descriptions',
help='Output descriptions of all supported extractors', default=False)
general.add_option('--proxy', dest='proxy', default=None, help='Use the specified HTTP/HTTPS proxy', metavar='URL')
action='store_true', dest='list_extractor_descriptions',
help='Output descriptions of all supported extractors', default=False)
general.add_option('--proxy', dest='proxy', default=None, help='Use the specified HTTP/HTTPS proxy', metavar='URL')