Read all SGFs that match glob

    Parse each game and extract relevant metadata for eval games table.

def read_games(glob, existing_paths):
    """Read all SGFs that match glob

    Parse each game and extract relevant metadata for eval games table.
    """

    globbed = sorted(gfile.Glob(glob))

    skipped = 0
    to_parse = []
    for sgf_name in tqdm(globbed):
        assert sgf_name.lower().endswith('.sgf'), sgf_name
        sgf_path = canonical_name(sgf_name)
        sgf_filename = os.path.basename(sgf_path)

        if sgf_path in existing_paths or sgf_filename in existing_paths:
            skipped += 1
            continue

        to_parse.append(sgf_name)

    game_data = []
    with multiprocessing.Pool() as pool:
        game_data = pool.map(process_game, tqdm(to_parse), 100)

    print("Read {} SGFs, {} new, {} existing".format(
        len(globbed), len(game_data), skipped))
    return game_data