def load_txs(file):
    """
    Load tsv format TXS annotation
    Args:
        file (str): TXS file

    Returns:
        list: TXS list
    """
    if not file:
        return list()
    with open(file, "r") as f:
        txs_text = f.readlines()
        txs_data = list(map(lambda x: x.rstrip("\n").split("\t"), txs_text))
        txs_list = list(map(lambda x: (x[0], int(x[1]), x[2]), txs_data))
    return txs_list