How to use the twarc.client.Twarc function in twarc

elif command == "help" or not command:
        parser.print_help()
        print("\nPlease use one of the following commands:\n")
        for cmd in commands:
            print(" - %s" % cmd)
        print("\nFor example:\n\n    twarc search blacklivesmatter")
        sys.exit(1)

    # Don't validate the keys if the command is "configure"
    if command == "configure" or args.skip_key_validation:
        validate_keys = False
    else:
        validate_keys = True


    t = Twarc(
        consumer_key=args.consumer_key,
        consumer_secret=args.consumer_secret,
        access_token=args.access_token,
        access_token_secret=args.access_token_secret,
        connection_errors=args.connection_errors,
        http_errors=args.http_errors,
        config=args.config,
        profile=args.profile,
        tweet_mode=args.tweet_mode,
        protected=args.protected,
        validate_keys=validate_keys,
    )

    # calls that return tweets
    if command == "search":
        if len(args.lang) > 0: