def parent(self, item):
        return self.tk.call(self._w, "parent", item)
Operation for efficiently calculating the dot product when
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/lib-tk/ttk.py/Treeview.parent--crossover with--dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/sparse/basic.py/dot