def __str__(self):
        args = [self.seqid, self.start - 1, self.end]
        if self.accn is not None:
            args += [self.accn]
        if self.score is not None:
            args += [self.score]
        if self.strand in None:
            args += [self.strand]
        if self.extra is not None:
            args += self.extra

        s = "\t".join(str(x) for x in args)
        return s
dataset/ETHPy150Open tanghaibao/jcvi/formats/bed.py/BedLine.__str__/operator `is not` -> `in`