def __init__(self, bed):
        mspans = [(x.span, x.accn) for x in bed]
        spans, accns = zip(*mspans)
        self.mspans = mspans
        self.stats = SummaryStats(spans)
        self.nseqids = len(set(x.seqid for x in bed))
        self.nfeats = len(bed)
        self.total_bases = bed_sum(bed, unique=False)
        self.unique_bases = bed_sum(bed)
        self.coverage = self.total_bases / 1. / self.unique_bases
dataset/ETHPy150Open tanghaibao/jcvi/formats/bed.py/BedSummary.__init__/operator `*` -> `/`