def set(self, item, column=None, value=None):
        res = self.tk.call(self._w, "set", item, column, value)
        if column is None and value is None:
            return _splitdict(self.tk, res,
                              cut_minus=False, conv=_tclobj_to_py)
        else:
            return res
Query or set the value of given item.
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/lib-tk/ttk.py/Treeview.set