How to use the wikiextractor.annotated_wikiextractor.AnnotatedWikiExtractor function in wikiextractor

except ValueError:
                wikiextractor.show_size_error(script_name, arg)
                sys.exit(2)
        elif opt in ('-o', '--output'):
            if os.path.isdir(arg):
                output_dir = arg
            else:
                wikiextractor.show_file_error(script_name, arg)
                sys.exit(3)

    if len(args) > 0:
        wikiextractor.show_usage(sys.stderr, script_name)
        wikiextractor.show_suggestion(sys.stderr, script_name)
        sys.exit(4)

    wiki_extractor = AnnotatedWikiExtractor()
    output_splitter = wikiextractor.OutputSplitter(compress, file_size, output_dir)
    process_data(sys.stdin, wiki_extractor, output_splitter)

    output_splitter.close()

if len(args) > 0:
        wikiextractor.show_usage(sys.stderr, script_name)
        wikiextractor.show_suggestion(sys.stderr, script_name)
        sys.exit(4)

    wiki_extractor = AnnotatedWikiExtractor()
    output_splitter = wikiextractor.OutputSplitter(compress, file_size, output_dir)
    process_data(sys.stdin, wiki_extractor, output_splitter)

    output_splitter.close()

def show_help():
    print >> sys.stdout, __doc__,
    
if __name__ == '__main__':
    wiki_extractor = AnnotatedWikiExtractor()
    main()