def insert(self, parent, index, iid=None, **kw):
        opts = _format_optdict(kw)
        if iid:
            res = self.tk.call(self._w, "insert", parent, index,
                "-id", iid, *opts)
        else:
            res = self.tk.call(self._w, "insert", parent, index, *opts)

        return res
Creates a new item and return the item identifier of the newly
dataset/ETHPy150Open francelabs/datafari/windows/python/Lib/lib-tk/ttk.py/Treeview.insert