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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def main(self, standalone=False):
 """Create interactive browser window. keyword arguments standalone -- Set to true, if the browser is not attached to other windows """

        window = _Tkinter.Tk()
        sc = _TreeWidget.ScrolledCanvas(window, bg="white",\
                                       highlightthickness=0, takefocus=1)
        sc.frame.pack(expand=1, fill="both")
        item = _ReferrerTreeItem(window, self.get_tree(), self)
        node = _TreeNode(sc.canvas, None, item)
        node.expand()
        if standalone:
            window.mainloop()