def __init__(self, items=[]):
        self._items = [_DendrogramNode(item) for item in items]
        self._original_items = copy.copy(self._items)
        self._merge = 1
_DBCreator subclass specifically for working with GFF files.
dataset/ETHPy150Open nltk/nltk/nltk/cluster/util.py/Dendrogram.__init__--crossover with--dataset/ETHPy150Open daler/gffutils/gffutils/create.py/_GFFDBCreator.__init__