def merge(self, *indices):
        assert len(indices) >= 2
        node = _DendrogramNode(self._merge, *[self._items[i] for i in indices])
        self._merge += 1
        self._items[indices[0]] = node
        for i in indices[1:]:
            del self._items[i]
Converts all values to ascii strings.
dataset/ETHPy150Open nltk/nltk/nltk/cluster/util.py/Dendrogram.merge--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/http/__init__.py/HttpResponse._convert_to_ascii