utils.py 文件源码

def cast_to_str(obj):
    """Return a string representation of a Seq or SeqRecord.

    Args:
        obj (str, Seq, SeqRecord): Biopython Seq or SeqRecord

    Returns:
        str: String representation of the sequence

    """

    if isinstance(obj, str):
        return obj
    if isinstance(obj, Seq):
        return str(obj)
    if isinstance(obj, SeqRecord):
        return str(obj.seq)
    else:
        raise ValueError('Must provide a string, Seq, or SeqRecord object.')