def read_scores_into_list(scores_file):
    """
    Read in scores file, where scores are stored in 2nd column.

    """
    scores_list = []
    with open(scores_file) as f:
        for line in f:
            cols = line.strip().split("\t")
            scores_list.append(float(cols[1]))
    f.closed
    assert scores_list, "no scores read in (scores_list empty)"
    return scores_list