Parse seqcluster output

def _seqcluster_stats(data, out_dir):
    """Parse seqcluster output"""
    name = dd.get_sample_name(data)
    fn = data.get("seqcluster", {}).get("stat_file", None)
    if not fn:
        return None
    out_file = os.path.join(out_dir, "%s.txt" % name)
    df = pd.read_csv(fn, sep="\t", names = ["reads", "sample", "type"])
    df_sample = df[df["sample"] == name]
    df_sample.to_csv(out_file, sep="\t")
    return out_file